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Satoshi Tomita

Section

Institute for Excellence in Higher Education

Job title

Associate Professor

Degree

博士（理学）(神戸大学)
修士（工学）(神戸大学)

researchmap

https://researchmap.jp/metamaterial

J-GLOBAL ID

201801000168659430

e-Rad No.

90360594

ORCID

https://orcid.org/0000-0002-2514-9675

Professional Memberships 4

日本物理教育学会
日本磁気学会
応用物理学会
日本物理学会

Research Interests 6

metasurface
plasmon
magnetism
chirality
nanoparticle
metamaterial

Research Areas 2

Natural sciences / Semiconductors, optical and atomic physics / metamaterial
Nanotechnology/Materials / Nanostructure physics / metamaterial

Papers 87

Ultrastrongly coupled and directionally nonreciprocal magnon polaritons in magnetochiral metamolecules Peer-reviewed

Kentaro Mita, Takahiro Chiba, Toshiyuki Kodama, Tetsuya Ueda, Toshihiro Nakanishi, Kei Sawada, Satoshi Tomita

Physical Review Applied　23　(1)　2025/01/17
Publisher: American Physical Society (APS)
DOI： 10.1103/physrevapplied.23.l011004 　

eISSN： 2331-7019
Pure moving optical media consisting of magnetochiral metasurfaces Peer-reviewed

Toshiyuki Kodama, Toshihiro Nakanishi, Kei Sawada, Satoshi Tomita

Optical Materials Express　14　(11)　2499-2499　2024/10/04
Publisher: Optica Publishing Group
DOI： 10.1364/ome.535115 　

eISSN： 2159-3930

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We report on numerical studies of microwave bianisotropies by magnetochiral (MCh) metasurfaces consisting of double Z-type gammadions with perpendicularly magnetized substrates. The metasurfaces’ effective polarizability tensor, extracted from calculated reflection and transmission coefficients, has components of the non-reciprocal moving-type bianisotropy as well as the reciprocal chiral-type bianisotropy and non-reciprocal magneto-optical (MO) effect. The combination of the metasurfaces with contraposition MCh metasurfaces cancels both the chiral-type bianisotropy and MO effect, resulting in pure moving optical media. An achieved perfect transmission with a phase difference of π realizes an ideal gyrator for arbitrary spatial and polarization modes.
Direct observation of current-induced nonlinear spin torque in Pt-Py bilayers Peer-reviewed

Toshiyuki Kodama, Nobuaki Kikuchi, Takahiro Chiba, Satoshi Okamoto, Seigo Ohno, Satoshi Tomita

Physical Review B　109　(21)　214419　2024/06/13
Publisher: American Physical Society (APS)
DOI： 10.1103/physrevb.109.214419 　

ISSN： 2469-9950

eISSN： 2469-9969
Spin-Current-Driven Permeability Variation for Time-Varying Magnetic Metamaterials Peer-reviewed

Toshiyuki Kodama, Nobuaki Kikuchi, Satoshi Okamoto, Seigo Ohno, Satoshi Tomita

Physical Review Applied　19　(4)　044080　2023/04/26
Publisher: American Physical Society (APS)
DOI： 10.1103/physrevapplied.19.044080 　

eISSN： 2331-7019
Co-planar waveguide ferromagnetic resonance spectroscopy of cobalt/platinum superlattice metamaterials Peer-reviewed

Satoshi Tomita, Nobuaki Kikuchi, Satoshi Okamoto

Japanese Journal of Applied Physics　62　(SB)　SB1010-SB1010　2023/03/01

DOI： 10.35848/1347-4065/ac931a 　

ISSN： 0021-4922

eISSN： 1347-4065
Spin-current Driven Magnetic Meta-atoms for Time-varying Permeability

Renya Shimizu, Toshiyuki Kodama, Nobuaki Kikuchi, Satohsi Okamoto, Seigo Ohno, Satoshi Tomita

2023 IEEE International Magnetic Conference - Short Papers, INTERMAG Short Papers 2023 - Proceedings　2023

DOI： 10.1109/INTERMAGShortPapers58606.2023.10228282 　
Unity-order magnetochiral effects exhibited by a single metamolecule

Hiroyuki Kurosawa, Satoshi Tomita, „ Kei Sawada, Toshihiro Nakanishi, Tetsuya Ueda

Optics Express　30　(20)　37066-37066　2022/09/26
Publisher: Optica Publishing Group
DOI： 10.1364/oe.469675 　

eISSN： 1094-4087

More details Close

A numerical study predicts that a single metamolecule with magnetism and chirality has giant magnetochiral (MCh) effects at microwave frequencies. The magnetism is provided by the ferromagnetic resonance of ferrite under dc bias magnetic fields, while the chirality is provided by the spiral arrangement of dielectric cubes with Mie resonance. The dielectric and magnetic resonances interfere in the metamolecule, resulting in a two-order of magnitude enhancement of the MCh effect compared with that reported in previous studies. This prediction is verified experimentally. A unity-order directional difference in the refractive index caused by the MCh effect is also demonstrated. This study is a significant milestone in the practical use of the MCh effect.
Enhanced Magneto-Optical Activities of Modulated Fe-Pt Multilayer Metamaterials Peer-reviewed

Tomita Satoshi, Suwa Tomomi, Riego Patricia, Berger Andreas, Hosoito Nobuyoshi, Yanagi Hisao

PHYSICAL REVIEW APPLIED　11　(6)　2019/06/05

DOI： 10.1103/PhysRevApplied.11.064010 　

ISSN： 2331-7019
Magnetochiral Metamolecules for Microwaves

Satoshi Tomita, Kei Sawada, Hiroyuki Kurosawa, Tetsuya Ueda

Springer Series in Materials Science　287　219-234　2019/01

DOI： 10.1007/978-981-13-8649-7_14 　

ISSN： 0933-033X
Organic photovoltaic cells with onion-like carbon thin films as hole collection layers Peer-reviewed

Hitoshi Mizuno, Kazunori Nagano, Satoshi Tomita, Hisao Yanagi, Ichiro Hiromitsu

Thin Solid Films　654　69-76　2018/05/31

DOI： 10.1016/j.tsf.2018.03.074 　

ISSN： 0040-6090
Microwave Spectroscopy of a Single Permalloy Chiral Metamolecule on a Coplanar Waveguide Peer-reviewed

Toshiyuki Kodama, Yusaku Kusanagi, Satoshi Okamoto, Nobuaki Kikuchi, Osamu Kitakami, Satoshi Tomita, Nobuyoshi Hosoito, Hisao Yanagi

Physical Review Applied　9　(5)　2018/05/17

DOI： 10.1103/PhysRevApplied.9.054025 　

ISSN： 2331-7019
Characterization of Small-Molecule Photovoltaic Cells with Onion-Like Carbon as a Hole Collection Layer

Mizuno Hitoshi, Yuasa Yasuyuki, Tomita Satoshi, Yanagi Hisao, Hiromitsu Ichiro

JSAP Annual Meetings Extended Abstracts　2018.1　2446-2446　2018/03/05
Publisher: The Japan Society of Applied Physics
DOI： 10.11470/jsapmeeting.2018.1.0_2446 　

eISSN： 2436-7613
Metamaterials with magnetism and chirality Peer-reviewed

Satoshi Tomita, Hiroyuki Kurosawa, Tetsuya Ueda, Kei Sawada

Journal of Physics D: Applied Physics　51　(8)　2018/02/06

DOI： 10.1088/1361-6463/aa9ecb 　

ISSN： 1361-6463 0022-3727
Observation of asymmetric electromagnetic field profiles in chiral metamaterials Peer-reviewed

Nobuyuki Hisamoto, Tetsuya Ueda, Kei Sawada, Satoshi Tomita

Physical Review B　97　(8)　2018/02/02

DOI： 10.1103/PhysRevB.97.085105 　

ISSN： 2469-9969 2469-9950
Generalized magneto-optical ellipsometry of Py layers with Ag/Bi interfaces

Tomita Satoshi, Suwa Tomomi, Patricia Riego, Andreas Berger, Hosoito Nobuyoshi, Yanagi Hisao

Meeting Abstracts of the Physical Society of Japan　73.1　1109-1109　2018
Publisher: The Physical Society of Japan
DOI： 10.11316/jpsgaiyo.73.1.0_1109 　

eISSN： 2189-0803
Microwave analog of Stern-Gerlach effects using nonuniform chiral metamaterials Peer-reviewed

Satoshi Tomita, Kei Sawada, Shotaro Nagai, Atsushi Sanada, Nobuyuki Hisamoto, Tetsuya Ueda

PHYSICAL REVIEW B　96　(16)　2017/10

DOI： 10.1103/PhysRevB.96.165425 　

ISSN： 2469-9950

eISSN： 2469-9969
Magnetic Properties of Fibonacci-Modulated Fe-Au Multilayer Metamaterials Peer-reviewed

Tomomi Suwa, Satoshi Tomita, Nobuyoshi Hosoito, Hisao Yanagi

MATERIALS　10　(10)　2017/10

DOI： 10.3390/ma10101209 　

ISSN： 1996-1944
Enhanced magneto-optical Kerr effects in Py/Ag/Bi trilayers Peer-reviewed

Patricia Riego, Satoshi Tomita, Kaoru Murakami, Toshiyuki Kodama, Nobuyoshi Hosoito, Hisao Yanagi, Andreas Berger

JOURNAL OF PHYSICS D-APPLIED PHYSICS　50　(19)　2017/05

DOI： 10.1088/1361-6463/aa69f9 　

ISSN： 0022-3727

eISSN： 1361-6463
Spectroscopic generalized magneto-optical ellipsometry of Py/Ag/Bi trilayers Peer-reviewed

Patricia Riego, Satoshi Tomita, Kaoru Murakami, Toshiyuki Kodama, Nobuyoshi Hosoito, Hisao Yanagi, Andreas Berger

Journal of Physics D: Applied Physics　50　19LT01/1-19LT01/5　2017/04/19
Enhanced magnetochiral effects at microwave frequencies by a single metamolecule Peer-reviewed

Satoshi Tomita, Hiroyuki Kurosawa, Kei Sawada, Tetsuya Ueda

PHYSICAL REVIEW B　95　(8)　2017/02

DOI： 10.1103/PhysRevB.95.085402 　

ISSN： 2469-9950

eISSN： 2469-9969
Physics in Metamaterials

TOMITA Satoshi

The Journal of the Institute of Electrical Engineers of Japan　137　(6)　346-349　2017
Publisher: The Institute of Electrical Engineers of Japan
DOI： 10.1541/ieejjournal.137.346 　

ISSN： 1340-5551
Stern-Gerlach effects for microwaves by nonuniform chiral metamaterials

Tomita Satoshi, Sawada Kei, Nagai Shotaro, Sanada Atsushi, Hisamoto Nobuyuki, Ueda Tetsuya

Meeting Abstracts of the Physical Society of Japan　72　(0)　1437-1437　2017
Publisher: The Physical Society of Japan
DOI： 10.11316/jpsgaiyo.72.1.0_1437 　
Ferromagnetic Resonance of a Single Magnetochiral Metamolecule of Permalloy Peer-reviewed

Toshiyuki Kodama, Satoshi Tomita, Takeshi Kato, Daiki Oshima, Satoshi Iwata, Satoshi Okamoto, Nobuaki Kikuchi, Osamu Kitakami, Nobuyoshi Hosoito, Hisao Yanagi

PHYSICAL REVIEW APPLIED　6　(2)　2016/08

DOI： 10.1103/PhysRevApplied.6.024016 　

ISSN： 2331-7019
Terahertz wave emission from plasmonic chiral metasurfaces Peer-reviewed

Takahiro Matsui, Satoshi Tomita, Motoki Asai, Yuzuru Tadokoro, Keisuke Takano, Makoto Nakajima, Masanori Hangyo, Hisao Yanagi

APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING　122　(3)　2016/03

DOI： 10.1007/s00339-016-9657-y 　

ISSN： 0947-8396

eISSN： 1432-0630
22aBP-9 Magneto-chiral effect induced by a meta-molecule under high magnetic fields

Kurosawa H., Tomita S., Sawada K., Ueda T.

Meeting Abstracts of the Physical Society of Japan　71　1644-1644　2016
Publisher: The Physical Society of Japan (JPS)
DOI： 10.11316/jpsgaiyo.71.1.0_1644 　

ISSN： 2189-079X
22aBP-8 Study of topological spin waves in quasi-periodic magnonic crystal

Nakayama K., Tomita S., Kunihara K., Yanagi H., Manago T.

Meeting Abstracts of the Physical Society of Japan　71　1643-1643　2016
Publisher: The Physical Society of Japan (JPS)
DOI： 10.11316/jpsgaiyo.71.1.0_1643 　

ISSN： 2189-079X
Biotemplates and their application to electronic devices Peer-reviewed

Yukiharu Uraoka, Mutsunori Uenuma, Yasuaki Ishikawa, Shinya Kumagai, Satoshi Tomita, Heiji Watanabe, Ichiro Yamashita

Intelligent Nanosystems for Energy, Information and Biological Technologies　119-143　2016/01/01
Publisher: Springer Japan
DOI： 10.1007/978-4-431-56429-4_8 　
Fabrication and ferromagnetic resonance of cobalt chiral meta-molecule arrays Peer-reviewed

Toshiyuki Kodama, Satoshi Tomita, Nobuyoshi Hosoito, Hisao Yanagi

APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING　122　(1)　2016/01

DOI： 10.1007/s00339-015-9564-7 　

ISSN： 0947-8396

eISSN： 1432-0630
21pCN-7 Ferromagnetic Resonance and Magnetization Measurement of Single Permalloy Chiral Meta-Molecule

Kodama T., Tomita S., Kato T., Iwata S., Hosoito N., Yanagi H.

Meeting Abstracts of the Physical Society of Japan　70　1460-1460　2015
Publisher: The Physical Society of Japan (JPS)
DOI： 10.11316/jpsgaiyo.70.1.0_1460 　

ISSN： 2189-079X
21pCN-2 Terahertz Wave Emission from Plasmonic Chiral Metasurfaces

Matsui Takahiro, Asai Motoki, Tadokoro Yuzuru, Takano Keisuke, Nakajima Makoto, Hangyo Masanori, Iwami Kentaro, Tomita Satoshi, Yanagi Hisao

Meeting Abstracts of the Physical Society of Japan　70　1455-1455　2015
Publisher: The Physical Society of Japan (JPS)
DOI： 10.11316/jpsgaiyo.70.1.0_1455 　

ISSN： 2189-079X
Direct Observation of Magnetochiral Effects through a Single Metamolecule in Microwave Regions Peer-reviewed

Satoshi Tomita, Kei Sawada, Andrey Porokhnyuk, Tetsuya Ueda

PHYSICAL REVIEW LETTERS　113　(23)　2014/12

DOI： 10.1103/PhysRevLett.113.235501 　

ISSN： 0031-9007

eISSN： 1079-7114
Lifetime reduction of a quantum emitter with quasiperiodic metamaterials Peer-reviewed

Yuto Moritake, Kazuyuki Nakayama, Toshihiro Suzuki, Hiroyuki Kurosawa, Toshiyuki Kodama, Satoshi Tomita, Hisao Yanagi, Teruya Ishihara

PHYSICAL REVIEW B　90　(7)　2014/08

DOI： 10.1103/PhysRevB.90.075146 　

ISSN： 1098-0121

eISSN： 1550-235X
Spectroscopic ellipsometry and magneto-optical kerr spectroscopy of magnetic garnet thin films incorporating plasmonic nanoparticles Peer-reviewed

Satoshi Tomita

Ellipsometry at the Nanoscale　325-339　2013/01/01
Publisher: Springer Berlin Heidelberg
DOI： 10.1007/978-3-642-33956-1 　
Manipulation of spontaneous emission with quasi-periodic metamaterials Peer-reviewed

K. Nakayama, Y. Moritake, T. Suzuki, H. Kurosawa, T. Kodama, S. Tomita, H. Yanagi, T. Ishihara

Pacific Rim Conference on Lasers and Electro-Optics, CLEO - Technical Digest　2013

DOI： 10.1109/CLEOPR.2013.6599960 　
Chiral meta-interface: Polarity reversal of ellipticity through double layers consisting of transparent chiral and absorptive achiral media Peer-reviewed

Satoshi Tomita, Yuuka Kosaka, Hisao Yanagi, Kei Sawada

PHYSICAL REVIEW B　87　(4)　2013/01

DOI： 10.1103/PhysRevB.87.041404 　

ISSN： 1098-0121
Simple Analysis for Frequency Increase in Spin Torque Oscillation Peer-reviewed

Chiharu Mitsumata, Satoshi Tomita, Takeshi Seki, Masaki Mizuguchi

IEEE TRANSACTIONS ON MAGNETICS　48　(11)　3955-3957　2012/11

DOI： 10.1109/TMAG.2012.2201700 　

ISSN： 0018-9464
Chiral meta-molecules consisting of gold nanoparticles and genetically engineered tobacco mosaic virus Peer-reviewed

Mime Kobayashi, Satoshi Tomita, Kei Sawada, Kiyotaka Shiba, Hisao Yanagi, Ichiro Yamashita, Yukiharu Uraoka

OPTICS EXPRESS　20　(22)　24856-24863　2012/10

DOI： 10.1364/OE.20.024856 　

ISSN： 1094-4087
Gold Nanoparticle-Induced Formation of Artificial Protein Capsids Peer-reviewed

Ali D. Malay, Jonathan G. Heddle, Satoshi Tomita, Kenji Iwasaki, Naoyuki Miyazaki, Koji Sumitomo, Hisao Yanagi, Ichiro Yamashita, Yukiharu Uraoka

NANO LETTERS　12　(4)　2056-2059　2012/04

DOI： 10.1021/nl3002155 　

ISSN： 1530-6984
Plasmonic circular dichroism using Au fine particles and riboflavin Peer-reviewed

Yuuka Kosaka, Kazutaka Egami, Satoshi Tomita, Hisao Yanagi

PHYSICA STATUS SOLIDI C: CURRENT TOPICS IN SOLID STATE PHYSICS, VOL 9, NO 12　9　(12)　2529-2532　2012

DOI： 10.1002/pssc.201200266 　

ISSN： 1862-6351
Optical properties of dye-doped polymer films incorporating photonic nanostructures Peer-reviewed

Kazutaka Egami, Tomoya Nakayama, Yuuka Kosaka, Satoshi Tomita, Atsushi Ishizumi, Hisao Yanagi, Ken-ichi Yamashita, Kunishige Oe

PHYSICA STATUS SOLIDI C: CURRENT TOPICS IN SOLID STATE PHYSICS, VOL 9, NO 12　9　(12)　2485-2488　2012

DOI： 10.1002/pssc.201200225 　

ISSN： 1862-6351
Transformation of nano-diamonds to carbon nano-onions studied by X-ray diffraction and molecular dynamics Peer-reviewed

L. Hawelek, A. Brodka, S. Tomita, J. C. Dore, V. Honkimäki, A. Burian

Diamond and Related Materials　20　(10)　1333-1339　2011/11

DOI： 10.1016/j.diamond.2011.09.008 　

ISSN： 0925-9635
Control of Gilbert damping using magnetic metamaterials Peer-reviewed

Chiharu Mitsumata, Satoshi Tomita

PHYSICAL REVIEW B　84　(17)　2011/11

DOI： 10.1103/PhysRevB.84.174421 　

ISSN： 1098-0121
Fabrication of Carbon Nanotube/Zinc Oxide Composite Films by Electrodeposition Peer-reviewed

Tomoya Kuwajima, Yusuke Nakanishi, Aishi Yamamoto, Kazuyuki Nobusawa, Atsushi Ikeda, Satoshi Tomita, Hisao Yanagi, Keigo Ichinose, Tsukasa Yoshida

JAPANESE JOURNAL OF APPLIED PHYSICS　50　(8)　2011/08

DOI： 10.1143/JJAP.50.085504 　

ISSN： 0021-4922
Gold nanostructures using tobacco mosaic viruses for optical metamaterials Peer-reviewed

Mime Kobayashi, Ichiro Yamashita, Yukiharu Uraoka, Kiyotaka Shiba, Satoshi Tomita

METAMATERIALS VI　8070　2011

DOI： 10.1117/12.886652 　

ISSN： 0277-786X
Resonant photon transport through metal-insulator-metal multilayers consisting of Ag and SiO2 Peer-reviewed

Maiko Yoshida, Satoshi Tomita, Hisao Yanagi, Shinji Hayashi

PHYSICAL REVIEW B　82　(4)　2010/07

DOI： 10.1103/PhysRevB.82.045410 　

ISSN： 1098-0121
Surface-emitting dye-doped polymer laser coupled with stimulated resonant Raman scattering Peer-reviewed

Hisao Yanagi, Hidetaka Miyamoto, Atsushi Ishizumi, Satoshi Tomita, Kenichi Yamashita, Kunishige Oe

APPLIED PHYSICS LETTERS　96　(26)　2010/06

DOI： 10.1063/1.3459967 　

ISSN： 0003-6951
Electron magnetic resonance in interacting ferromagnetic-metal nanoparticle systems: experiment and numerical simulation Peer-reviewed

Chiharu Mitsumata, Satoshi Tomita, Masayuki Hagiwara, Kensuke Akamatsu

JOURNAL OF PHYSICS-CONDENSED MATTER　22　(1)　2010/01

DOI： 10.1088/0953-8984/22/1/016005 　

ISSN： 0953-8984
Dye-doped polymer microring laser coupled with stimulated resonant Raman scattering Peer-reviewed

Hisao Yanagi, Rei Takeaki, Satoshi Tomita, Atsushi Ishizumi, Fumio Sasaki, Kenichi Yamashita, Kunishige Oe

APPLIED PHYSICS LETTERS　95　(3)　2009/07

DOI： 10.1063/1.3183586 　

ISSN： 0003-6951
Distributed feedback lasing coupled with stimulated resonant Raman scattering in polyphenylenevinylene films Peer-reviewed

H. Yanagi, N. Kawazu, R. Takeaki, S. Tomita, K. Yamashita, K. Oe

SYNTHETIC METALS　159　(9-10)　802-804　2009/05

DOI： 10.1016/j.synthmet.2009.01.008 　

ISSN： 0379-6779
Photoluminescence from Donor-Acceptor Molecular Systems via Long Distance Energy Transfer Mediated by Surface Plasmons Peer-reviewed

Takayuki Shimada, Satoshi Tomita, Shu Hotta, Shinji Hayashi, Hisao Yanagi

JAPANESE JOURNAL OF APPLIED PHYSICS　48　(4)　2009/04

DOI： 10.1143/JJAP.48.042001 　

ISSN： 0021-4922
Loss monitoring in resonant photon tunneling through metal and dielectric multi-layer metamaterials Peer-reviewed

Motonobu Matsunaga, Satoshi Tomita, Takashi Yokoyama, Hisao Yanagi

PLASMONICS: NANOIMAGING, NANOFABRICATION, AND THEIR APPLICATIONS V　7395　2009

DOI： 10.1117/12.825828 　

ISSN： 0277-786X
Structural studies of nanodiamond by high-energy X-ray diffraction Peer-reviewed

L. Hawelek, A. Brodka, J. C. Dore, V. Honkimaki, S. Tomita, A. Burian

Diamond and Related Materials　17　(7-10)　1186-1193　2008/07

DOI： 10.1016/j.diamond.2008.01.107 　

ISSN： 0925-9635
Resonant photon tunneling via surface plasmon polaritons through one-dimensional metal-dielectric metamaterials Peer-reviewed

Satoshi Tomita, Takashi Yokoyama, Hisao Yanagi, Ben Wood, John B. Pendry, Minoru Fujii, Shinji Hayashi

Optics Express　16　(13)　9942-9950　2008/06/23

DOI： 10.1364/OE.16.009942 　

ISSN： 1094-4087

eISSN： 1094-4087
Nanocomposite polymeric microspheres containing Ni nanoparticles with controlled microstructures Peer-reviewed

Kensuke Akamatsu, Satoshi Adachi, Takaaki Tsuruoka, Shingo Ikeda, Satoshi Tomita, Hidemi Nawafune

CHEMISTRY OF MATERIALS　20　(9)　3042-3047　2008/05

DOI： 10.1021/cm7030152 　

ISSN： 0897-4756

eISSN： 1520-5002
Light amplification induced by stimulated resonance Raman scattering in poly(phenylene vinylene) thin films Peer-reviewed

Shuhei Fujimoto, Satoshi Tomita, Hisao Yanagi

JAPANESE JOURNAL OF APPLIED PHYSICS　47　(2)　1188-1191　2008/02

DOI： 10.1143/JJAP.47.1188 　

ISSN： 0021-4922
Spectroscopic ellipsometry of yttrium-iron garnet thin films containing gold nanoparticles Peer-reviewed

Satoshi Tomita, Minoru Fujii, Shinji Hayashi, Asuka Terai, Nataliya Nabatova-Gabain

Japanese Journal of Applied Physics, Part 2: Letters　46　(41-44)　L1032-L1034　2007/11/09

DOI： 10.1143/JJAP.46.L1032 　

ISSN： 0021-4922

eISSN： 1347-4065
Negative permeability of magnetic nanocomposite films for designing left-handed metamaterials Peer-reviewed

Chiharu Mitsumata, Satoshi Tomita

APPLIED PHYSICS LETTERS　91　(22)　2007/11

DOI： 10.1063/1.2816894 　

ISSN： 0003-6951
Controlled magnetic properties of Ni nanoparticles embedded in polyimide films Peer-reviewed

Satoshi Tomita, Petra E. Joensson, Kensuke Akamatsu, Hidemi Nawafune, Hajime Takayama

PHYSICAL REVIEW B　76　(17)　2007/11

DOI： 10.1103/PhysRevB.76.174432 　

ISSN： 1098-0121
Erratum: Magneto-optical kerr effects of yttrium-iron garnet thin films incorporating gold nanoparticles (Physical Review Letters (2006) 96 (167402)) Peer-reviewed

Satoshi Tomita, Takeshi Kato, Shigeru Tsunashima, Satoshi Iwata, Minoru Fujii, Shinji Hayashi

Physical Review Letters　99　(3)　2007/07/17

DOI： 10.1103/PhysRevLett.99.039901 　

ISSN： 0031-9007

eISSN： 1079-7114
有機低次元構造のラマンレーザー作用”

柳久雄, 冨田知志, 山下兼一, 佐々木史雄, 小林俊介, 堀田収

文部科学省科学研究費補助金特定領域研究「次世代共役ポリマーの超階層構造と革新機能」第5回公開シンポジウム　2007/07/05
A possible route for left-handed meta-materials using ferromagnetic-metal nanocomposite films

Satoshi Tomita, Haruhiko Yashiro, Takanari Kashiwagi, Masayuki Hagiwara, Chiharu Mitsumata, Hidemi Nawafune, Kensuke Akamatsu

Optics InfoBase Conference Papers　2006
Publisher: Optical Society of America (OSA)
DOI： 10.1364/meta.2006.wd13 　

ISSN： 2162-2701
Magneto-optical Kerr effects of magnetic garnet thin films including plasmonic noble-metal nanoparticles Peer-reviewed

Satoshi Tomita, Takeshi Kato, Shigeru Tsunashima, Satoshi Iwata, Minoru Fujii, Shinji Hayashi

Optics InfoBase Conference Papers　2006

eISSN： 2162-2701
Magneto-optical kerr effects of yttrium-iron garnet thin films incorporating gold nanoparticles Peer-reviewed

Satoshi Tomita, Takeshi Kato, Shigeru Tsunashima, Satoshi Iwata, Minoru Fujii, Shinji Hayashi

Physical Review Letters　96　(16)　2006

DOI： 10.1103/PhysRevLett.96.167402 　

ISSN： 0031-9007

eISSN： 1079-7114
Controlling interparticle spacing among metal nanoparticles through metal-catalyzed decomposition of surrounding polymer matrix Peer-reviewed

Kensuke Akamatsu, Hiroyuki Shinkai, Shingo Ikeda, Satoshi Adachi, Hidemi Nawafune, Satoshi Tomita

Journal of the American Chemical Society　127　(22)　7980-7981　2005/06/08

DOI： 10.1021/ja050735+ 　

ISSN： 0002-7863
Synthesis and structural control of metal-containing polyimide nanocomposite Peer-reviewed

Hiroyuki Shinkai, Shingo Ikeda, Kensuke Akamatsu, Hiderni Nawafune, Satoshi Tomita

Transactions of the Materials Research Society of Japan, Vol 30, No 4　30　(4)　1223-1226　2005
12aPS-11 Electron magnetic resonance in Ni nanocomposite films Peer-reviewed

Tomita S, Akamatsu K, Shinkai H, Ikeda S, Nawafune H, Mitsumata C, Kashiwagi T, Hagiwara M

Meeting Abstracts of the Physical Society of Japan　59　(0)　342-342　2004
Publisher: The Physical Society of Japan
DOI： 10.11316/jpsgaiyo.59.2.3.0_342_2 　

ISSN： 1342-8349
27aPS-43 Ferromagnetic resonance in Ni nanocomposite films Peer-reviewed

Tomita S, Akamatsu K, Shinkai H, Ikeda S, Nawafune H, Kashiwagi T, Hagiwara M

Meeting Abstracts of the Physical Society of Japan　59　(0)　444-444　2004
Publisher: The Physical Society of Japan
DOI： 10.11316/jpsgaiyo.59.1.3.0_444_4 　

ISSN： 1342-8349
A novel fabrication technique for interacting ferromagnetic-metal nanoparticle systems: Fine-tuning of particle diameter and interparticle spacing

Satoshi Tomita, Kensuke Akamatsu, Hiroyuki Shinkai, Shingo Ikeda, Hidemi Nawafune, Chiharu Mitsumata, Takanari Kashiwagi, Masayuki Hagiwara

Materials Research Society Symposium Proceedings　853　55-60　2004

DOI： 10.1557/proc-853-i5.10 　

ISSN： 0272-9172
Hollow organic globules in the Tagish Lake meteorite as possible products of primitive organic reactions

Nakamura, K., Nakashima, S., Tomita, S., Zolensky, ME, Keller, LP, Tomeoka, K.

Geochimica Et Cosmochimica Acta　67　(18)　2003
Gas-phase production of monodisperse ferroelectric nanoparticles (<10 nm in diameter)

Kwang Soo Seol, Satoshi Tomita, Kazuo Takeuchi, Takahiro Katagiri, Takeshi Miyagawa, Yoshimichi Ohki

2003 Nanotechnology Conference and Trade Show - Nanotech 2003　3　94-97　2003
Microscopic study of thin films of Ni-filled carbon nanocapsules Peer-reviewed

V. D. Frolov, E. V. Zavedeev, S. M. Pimenov, V. I. Konov, S. Tomita, M. Fujii, S. Hayashi

Physics of Low-Dimensional Structures　3-4　283-288　2003

ISSN： 0204-3467
Optical extinction properties of carbon onions prepared from diamond nanoparticles Peer-reviewed

Satoshi Tomita, Minoru Fujii, Shinji Hayashi

Physical Review B - Condensed Matter and Materials Physics　66　(24)　2454241-2454247　2002/12/15

DOI： 10.1103/PhysRevB.66.245424 　

ISSN： 0163-1829
Optical extinction properties of carbon onions prepared from diamond nanoparticles Peer-reviewed

S Tomita, M Fujii, S Hayashi

PHYSICAL REVIEW B　66　(24)　2002/12

DOI： 10.1103/PhysRevB.66.245424 　

ISSN： 2469-9950

eISSN： 2469-9969
Gas-phase production of monodisperse lead zirconate titanate nanoparticles Peer-reviewed

Kwang Soo Seol, Satoshi Tomita, Kazuo Takeuchi, Takeshi Miyagawa, Takahiro Katagiri, Yoshimichi Ohki

Applied Physics Letters　81　(10)　1893-1895　2002/09/02

DOI： 10.1063/1.1505744 　

ISSN： 0003-6951
Diamond nanoparticles to carbon onions transformation: X-ray diffraction studies Peer-reviewed

Satoshi Tomita, Andrzej Burian, John C. Dore, David LeBolloch, Minoru Fujii, Shinji Hayashi

Carbon　40　(9)　1469-1474　2002/08

DOI： 10.1016/S0008-6223(01)00311-6 　

ISSN： 0008-6223
Ultraviolet-visible absorption spectroscopy of carbon onions Peer-reviewed

S. Tomita, S. Hayashi, Y. Tsukuda, M. Fujii

Physics of the Solid State　44　(3)　450-453　2002/03/01

DOI： 10.1134/1.1462669 　

ISSN： 1063-7834
Raman spectroscopy of carbonaceous globules in the Tagish Lake chondrite.

Nakamura, K., Zolensky, ME, Tomita, S., Tomeoka, K.

Meteoritics & Planetary Science　37　(7)　2002
Optical extinction properties of carbon onions prepared from diamond nanoparticles Peer-reviewed

Satoshi Tomita, Minoru Fujii, Shinji Hayashi

Physical Review B - Condensed Matter and Materials Physics　66　(24)　1-7　2002

DOI： 10.1103/PhysRevB.66.245424 　

ISSN： 1098-0121

eISSN： 1550-235X
Fabrication and characterization of PAN-derived carbon thin films containing Au nanoparticles Peer-reviewed

Deki, S., Nabika, H., Akamatsu, K., Mizuhata, M., Kajinami, A., Tomita, S., Fujii, M., Hayashi, S.

Thin Solid Films　408　(1-2)　59-63　2002

DOI： 10.1016/S0040-6090(02)00079-2 　
Ni<inf>1-x</inf>Co<inf>x</inf>-C nanogranular thin films prepared by a co-sputtering method: Improvement in magnetic properties by optimizing the alloy ratio Peer-reviewed

Satoshi Tomita, Hiroaki Adachi, Minoru Fujii, Shinji Hayashi

Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers　40　(11)　6370-6374　2001/11

DOI： 10.1143/JJAP.40.6370 　

ISSN： 0021-4922
Structure and electronic properties of carbon onions Peer-reviewed

Satoshi Tomita, Takahiro Sakurai, Hitoshi Ohta, Minoru Fujii, Shinji Hayashi

Journal of Chemical Physics　114　(17)　7477-7482　2001/05/01

DOI： 10.1063/1.1360197 　

ISSN： 0021-9606
Thin films of carbon nanocapsules and onion-like graphitic particles prepared by the cosputtering method Peer-reviewed

Osamu Mamezaki, Hiroaki Adachi, Satoshi Tomita, Minoru Fujii, Shinji Hayashi

Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers　39　(12 A)　6680-6683　2000/12/01

DOI： 10.1143/JJAP.39.6680 　

ISSN： 0021-4922
Formation of Co filled carbon nanocapsules by metal-template graphitization of diamond nanoparticles Peer-reviewed

Satoshi Tomita, Masahiro Hikita, Minoru Fujii, Shinji Hayashi, Kensuke Akamatsu, Shigehito Deki, Hidehiro Yasuda

Journal of Applied Physics　88　(9)　5452-5456　2000/11/01

DOI： 10.1063/1.1317242 　

ISSN： 0021-8979
A new and simple method for thin graphitic coating of magnetic-metal nanoparticles Peer-reviewed

Satoshi Tomita, Masahiro Hikita, Minoru Fujii, Shinji Hayashi, Keiichi Yamamoto

Chemical Physics Letters　316　(5-6)　361-364　2000/01/21

DOI： 10.1016/S0009-2614(99)01280-4 　

ISSN： 0009-2614
Structural studies of carbon nanotubes and related materials by neutron and x-ray diffraction

Dore, J., Burian, A., Tomita, S.

Acta Physica Polonica a　98　(5)　2000
Transformation of carbon onions to diamond by low-temperature heat treatment in air Peer-reviewed

Satoshi Tomita, Minoru Fujii, Shinji Hayashi, Keiichi Yamamoto

Diamond and Related Materials　9　(3)　856-860　2000

DOI： 10.1016/S0925-9635(99)00217-4 　

ISSN： 0925-9635
Electron energy-loss spectroscopy of carbon onions Peer-reviewed

Satoshi Tomita, Minoru Fujii, Shinji Hayashi, Keiichi Yamamoto

Chemical Physics Letters　305　(3-4)　225-229　1999/05/21

DOI： 10.1016/S0009-2614(99)00374-7 　

ISSN： 0009-2614

Show all ︎Show first 5

Misc. 72

メタマテリアル,メタサーフェス-微細構造と光の相互作用時間変調磁性メタマテリアルの実現に向けて Invited

児玉俊之, 冨田知志

光技術コンタクト　62　(6)　31-37　2024/06

ISSN： 0913-7289
Ultrastrongly-coupled non-reciprocal magnon-polaritons in magnetochiral metamaterials

冨田知志, 冨田知志, 三田健太郎, 児玉俊之, 上田哲也, 中西俊博, 澤田桂, 千葉貴裕, 千葉貴裕

日本物理学会講演概要集(CD-ROM)　79　(2)　2024

ISSN： 2189-079X
Time-varying Permeability Metamaterials towards Microwave Frequency Conversion

児玉俊之, 菊池伸明, 岡本聡, 岡本聡, 大野誠吾, 冨田知志, 冨田知志

日本磁気学会学術講演概要集　48th　2024

ISSN： 1882-2959
Observation of electromagnon-polaritons in magneto-chiral meta-molecules

三田健太郎, 児玉俊之, 上田哲也, 中西俊博, 澤田桂, 千葉貴裕, 千葉貴裕, 冨田知志, 冨田知志

日本物理学会講演概要集(CD-ROM)　79　(2)　2024

ISSN： 2189-079X
Evaluation of Spin-Current-Induced Permeability Variation toward Time-Varying Magnetic Metamaterials

児玉俊之, 菊池伸明, 岡本聡, 岡本聡, 大野誠吾, 冨田知志, 冨田知志

日本磁気学会論文特集号(Web)　8　(1)　2024

ISSN： 2432-0471
時間変調メタマテリアルに向けたスピン流誘起透磁率制御

児玉俊之, 菊池伸明, 岡本聡, 岡本聡, 大野誠吾, 冨田知志, 冨田知志

電子情報通信学会技術研究報告(Web)　123　(65(MRIS2023 1-7))　2023

ISSN： 2432-6380
Spin-current Induced Permeability Control of NiFe Wires towards Time-varying Metamaterials

児玉俊之, 菊池伸明, 岡本聡, 岡本聡, 大野誠吾, 冨田知志, 冨田知志

応用物理学会春季学術講演会講演予稿集(CD-ROM)　70th　2023

ISSN： 2436-7613
Permeability Control of Co Wires by Spin-current Injection for Time-varying Metamaterials

清水蓮也, 児玉俊之, 菊池伸明, 岡本聡, 岡本聡, 大野誠吾, 冨田知志, 冨田知志

応用物理学会春季学術講演会講演予稿集(CD-ROM)　70th　2023

ISSN： 2436-7613
Spin-injection Induced Permeability Control for Time-varying Metamaterials

児玉俊之, 清水蓮也, 菊池伸明, 岡本聡, 岡本聡, 大野誠吾, 冨田知志, 冨田知志

日本磁気学会学術講演概要集　47th　2023

ISSN： 1882-2959
Nonlinear Effect of Spin-Torque Ferromagnetic Resonance in Py/Pt Bilayers

児玉俊之, 菊池伸明, 千葉貴裕, 岡本聡, 岡本聡, 大野誠吾, 冨田知志, 冨田知志

応用物理学会秋季学術講演会講演予稿集(CD-ROM)　84th　2023

ISSN： 2758-4704
Magneto-chiral metasurfaces at microwave frequencies

冨田知志, 冨田知志, 児玉俊之, 中西俊博, 澤田桂, 澤田桂

応用物理学会秋季学術講演会講演予稿集(CD-ROM)　84th　2023

ISSN： 2758-4704
Microwave Frequency Conversion Using Time-Varying Permeability Metamaterials

児玉俊之, 黒澤裕之, 大野誠吾, 菊池伸明, 畑山正寿, 岡本聡, 岡本聡, 冨田知志, 冨田知志

日本磁気学会学術講演概要集　46th　2022

ISSN： 1882-2959
Permeability control for time-varying metamaterials

児玉俊之, 黒澤裕之, 大野誠吾, 菊池伸明, 畑山正寿, 岡本聡, 岡本聡, 冨田知志, 冨田知志

電気学会研究会資料(Web)　(MAG-22-142-147)　2022
Permeability Control of Magnetic Materials towards Time-varying Metamaterials

児玉俊之, 黒澤裕之, 大野誠吾, 菊池伸明, 畑山正寿, 岡本聡, 岡本聡, 冨田知志, 冨田知志

応用物理学会秋季学術講演会講演予稿集(CD-ROM)　83rd　2022

ISSN： 2758-4704
Anomalous spinwave dispersion under superluminal Doppler effect

中山和之, 笠原健司, 稲田聡明, 冨田知志

日本物理学会講演概要集(CD-ROM)　76　(1)　2021

ISSN： 2189-079X
Giant magnetochiral effects by dielectric-magnetic hybrid metamolecules

黒澤裕之, 冨田知志, 澤田桂, 中西俊博, 上田哲也

応用物理学会秋季学術講演会講演予稿集(CD-ROM)　82nd　2021
Non-reciprocal optical responses of magnetochiral metasurfaces at infrared region

冨田知志, 大西庸嵩, 柳久雄, 黒澤裕之

日本物理学会講演概要集(CD-ROM)　75　(1)　2020

ISSN： 2189-079X
Non-reciprocal microwave responses by magneto-chiral metamaterials

井上彗登, 黒澤裕之, 上田哲也, 冨田知志, 柳久雄

応用物理学会春季学術講演会講演予稿集(CD-ROM)　67th　2020
Non-reciprocal optical responses of magnetochiral metasurfaces at infrared region: II

冨田知志, 大西庸嵩, 柳久雄, 黒澤裕之

日本物理学会講演概要集(CD-ROM)　75　(2)　2020

ISSN： 2189-079X
LLG方程式を用いた共鳴状態計算の高速化—Acceleration of resonance state calculation using the LLG equation—磁性分野におけるマテリアルズインフォマティクスの現状

三俣千春, 冨田知志, 小野寛太

社団法人日本磁気学会研究会資料 = Bulletin of Topical Symposium of the Magnetics Society of Japan　223　11-16　2019/05/21
Publisher: 東京 : 日本磁気学会
ISSN： 1882-2940
磁気カイラルメタ表面による光領域での非相反性

大西庸嵩, 冨田知志, 黒澤裕之, 柳久雄

応用物理学会春季学術講演会講演予稿集(CD-ROM)　66th　2019
磁気カイラルメタ表面による近赤外領域での非相反性

大西庸嵩, 黒澤裕之, 冨田知志, 冨田知志, 柳久雄

応用物理学会秋季学術講演会講演予稿集(CD-ROM)　80th　2019
磁気カイラルメタ表面による近赤外光の非相反マジックミラー

冨田知志, 大西庸嵩, 柳久雄, 黒澤裕之

日本磁気学会学術講演概要集　43rd　2019

ISSN： 1882-2959
Magnetic Properties of quasi-periodic Fibonacci Fe-Au Multilayers

SUWA Tomomi, TOMITA Satoshi, HOSOITO Nobuyoshi, YANAGI Hisao

応用物理学会春季学術講演会講演予稿集(CD-ROM)　65th　2018

ISSN： 2436-7613
Py/Ag/Bi三層膜での時間分解磁気光学Kerr効果

妹尾駿一, 冨田知志, 諏訪智巳, 加藤剛志, 大島大輝, 岩田聡, 細糸信好, 柳久雄

応用物理学会春季学術講演会講演予稿集(CD-ROM)　65th　2018

ISSN： 2436-7613
単一メタ分子によるマイクロ波領域での増強磁気カイラル効果

冨田知志, 黒澤裕之, 澤田桂, 上田哲也

応用物理学会秋季学術講演会講演予稿集(CD-ROM)　79th　2018
光学活性メタマテリアルでのスピン軌道相互作用によるビーム分裂

冨田知志, 澤田桂, 真田篤志, 上田哲也

応用物理学会春季学術講演会講演予稿集(CD-ROM)　65th　2018
Enhanced magneto-optical Kerr effects in Py/Ag/Bi trilayers

Riego Patricia, Tomita Satoshi, Murakami Kaoru, Kodama Toshiyuki, Hosoito Nobuyoshi, Yanagi Hisao, Berger Andreas

2017/04/19
Publisher: IOP Publishing
ISSN： 1361-6463
コバルトのマイクロカイラル構造での非相反電気伝導の測定

村上郁, 児玉俊之, 冨田知志, 細糸信好, 柳久雄

応用物理学会春季学術講演会講演予稿集(CD-ROM)　64th　2017

ISSN： 2436-7613
フィボナッチ格子を持つマグノニック結晶のスピン波特性

中山和之, 冨田知志, 笠原健司, 諏訪智巳, 細糸信好, 柳久雄, 眞砂卓史

応用物理学会秋季学術講演会講演予稿集(CD-ROM)　78th　2017

ISSN： 2758-4704
準周期磁気構造体を利用したスピン波制御

中山和之, 冨田知志, 笠原健司, 児玉俊之, 細糸信好, 柳久雄, 眞砂卓史

日本物理学会講演概要集(CD-ROM)　72　(1)　2017

ISSN： 2189-079X
Ferromagnetic resonance of epitaxially grown magnetic Fibonacci multilayers

2016　(58)　17-19　2016/12/19
Publisher: 電気学会
C-2-32 Electromagnetic Wave Propagation in a 2-D Chiral Metamaterial

Hisamoto Nobuyuki, Ueda Tetsuya, Tomita Satoshi, Sawada Kei

Proceedings of the IEICE General Conference　2016　(1)　61-61　2016/03/01
Publisher: The Institute of Electronics, Information and Communication Engineers
Terahertz wave emission from plasmonic chiral metasurfaces

Matsui Takahiro, Tomita Satoshi, Asai Motoki, Tadokoro Yuzuru, Takano Keisuke, Nakajima Makoto, Hangyo Masanori, Yanagi Hisao

2016/02/18

ISSN： 1432-0630
磁性-非磁性準周期多層膜の磁気特性

本地泰彦, 児玉俊之, 冨田知志, 細糸信好, 柳久雄

応用物理学会春季学術講演会講演予稿集(CD-ROM)　63rd　2016

ISSN： 2436-7613
22aBP-10 Coplanar-waveguide ferromagnetic resonance of a single magneto-chiral metamolecule

Kodama T, Kusanagi Y, Okamoto S, Kikuchi N, Kitakami O, Tomita S, Hosoito N, Yanagi H

Meeting Abstracts of the Physical Society of Japan　71　(0)　2016
Publisher: 一般社団法人日本物理学会
カイラルメタ原子を用いた光のシュテルン・ゲルラッハ実験

冨田知志, 澤田桂, 永井翔太郎, 上田哲也, 真田篤志

日本物理学会講演概要集(CD-ROM)　70　(1)　2015

ISSN： 2189-079X
30aCK-2 Resonant phenomena of a magneto-chiral meta-molecule in the microwave region

Ueda Tetsuya, Porokhnyuk Andrey, Tsukamoto Yu, Tomita Satoshi, Sawada Kei

Meeting abstracts of the Physical Society of Japan　69　(1)　780-780　2014/03/05
Publisher: The Physical Society of Japan (JPS)
ISSN： 1342-8349
30aCK-3 Fablization and Spin-wave Resoance of Three Dimensional Ferromagnetic Chiral Meta-molecules

Kodama Toshiyuki, Tomita Satoshi, Hosoito Nobuyoshi, Ynagi Hisao

Meeting abstracts of the Physical Society of Japan　69　(1)　781-781　2014/03/05
Publisher: The Physical Society of Japan (JPS)
ISSN： 1342-8349
30aCK-11 Terahertz Wave Emission from Plasmonic Pinwheel-like Metainterface

Matsui Takahiro, Tomita Satoshi, Tadokoro Yuzuru, Asai Motoki, Takano Keisuke, Hangyo Masanori, Yanagi Hisao

Meeting abstracts of the Physical Society of Japan　69　(1)　221-221　2014/03/05
Publisher: The Physical Society of Japan (JPS)
ISSN： 1342-8349
強磁性カイラルメタ分子の作製と磁気共鳴

児玉俊之, 冨田知志, 澤田桂, 細糸信好, 柳久雄

応用物理学会秋季学術講演会講演予稿集(CD-ROM)　75th　2014

ISSN： 2758-4704
28pPSB-68 Fabrication and magnetic properties of ferromagnetic chiral meta-molecules

Kodama Toshiyuki, Tomita Satoshi, Koh Shinji, Uegaki Shin, Hosoito Nobuyoshi, Mitsumata Chiharu, Yanagi Hisao

Meeting abstracts of the Physical Society of Japan　68　(1)　849-849　2013/03/26
Publisher: The Physical Society of Japan (JPS)
ISSN： 1342-8349
27pEH-2 Circular Dichroism in the Visible Region Using Chiral Meta-Interfaces with Dye and Chiral Molecules

Kosaka Yuuka, Tomita Satoshi, Sawada Kei, Yanagi Hisao

Meeting abstracts of the Physical Society of Japan　68　(1)　809-809　2013/03/26
Publisher: The Physical Society of Japan (JPS)
ISSN： 1342-8349
27pEH-1 Circular dichroism of chiral meta-molecules consisting of gold nanoparticle and virus

Tomita Satoshi, Kobayashi Mime, Sawada Kei, Shiba Kiyotaka, Yanagi Hisao, Yamashita Ichiro, Uraoka Yukiharu

Meeting abstracts of the Physical Society of Japan　68　(1)　808-808　2013/03/26
Publisher: The Physical Society of Japan (JPS)
ISSN： 1342-8349
サブ波長フィボナッチ構造を用いた自然放出増強

森竹勇斗, 中山和之, 鈴木敏大, 黒澤裕之, 大野誠吾, 児玉俊之, 冨田知志, 柳久雄, 石原照也

日本物理学会講演概要集　68　(1)　228　2013/03/05

ISSN： 1342-8349
金ナノ粒子とウイルスによるカイラルメタ分子の円偏光二色性

冨田知志, 小林未明, 澤田桂, 芝清隆, 柳久雄, 山下一郎, 浦岡行治

日本物理学会講演概要集　68　(1)　226　2013/03/05

ISSN： 1342-8349
27pEH-8 Enhancement of spontaneous emission using a sub-wavelength Fibonacci structure

Moritake Y, Nakayama K, Suzuki T, Kurosawa H, Ohno S, Kodama T, Tomita S, Yanagi H, Ishihara T

Meeting Abstracts of the Physical Society of Japan　68　(0)　228-228　2013
Publisher: The Physical Society of Japan (JPS)
ISSN： 1342-8349
金ナノ粒子・タバコモザイクウイルス複合体によるカイラルメタ分子

冨田知志, 小林未明, 澤田桂, 芝清隆, 柳久雄, 山下一郎, 浦岡行治

応用物理学関係連合講演会講演予稿集(CD-ROM)　59th　ROMBUNNO.17A-B9-11　2012/02/29
Analytic Solution of Gilbert Damping in Landau-Lifshitz-Gilbert Equation in Magnetic Resonance due to Spin Torque Oscillation

Journal of the Magnetics Society of Japan　36　(4)　301-303　2012
Publisher: 日本磁気学会
ISSN： 1882-2924
22pPSB-46 Photon transport through MIM structures with noble-metal

Tomita S., Yoshida M., Yanagi H., Hayashi S.

Meeting abstracts of the Physical Society of Japan　65　(1)　791-791　2010/03/01
Publisher: The Physical Society of Japan (JPS)
ISSN： 1342-8349
27aPS-95 Resonant tunnel of light through Ag/SiO_2 multilayer metamaterials

Tomita Satoshi, Matsunaga Motonobu, Yanagi Hisao

Meeting abstracts of the Physical Society of Japan　64　(2)　667-667　2009/08/18
Publisher: The Physical Society of Japan (JPS)
ISSN： 1342-8349
Left-handed metamaterials using ferromagnetic-metal nanocomposites

TOMITA Satoshi, AKAMATSU Kensuke, YASHIRO Haruhiko, MITSUMATA Chiharu

78　(6)　523-526　2009/06/10
Publisher: 応用物理学会
ISSN： 0369-8009
メタマテリアルとしての強磁性金属ナノコンポジットの透磁率計算—Calculation of permeability of ferromagnetic metal nanocomposites for metamaterials—特集メタマテリアルの奇妙な性質

三俣千春, 冨田知志

まぐね = Magnetics Japan　4　(10)　470-475　2009
Publisher: 東京 : 日本応用磁気学会
ISSN： 1880-7208
Optics and magnetics of magnetic garnet thin films incorporating gold nanoparticles

TOMITA Satoshi

Bulletin of Topical Symposium of the Magnetics Society of Japan　161　19-26　2008/07/14
Publisher: 日本磁気学会
ISSN： 1882-2940
24aYG-4 Resonant photon tunnelling experiments on alternating metal / dielectric multilayer metamaterials

Tomita S., Yokoyama T., Yanagi H., Fujii M., Hayashi S.

Meeting abstracts of the Physical Society of Japan　63　(1)　169-169　2008/02/29
Publisher: The Physical Society of Japan (JPS)
ISSN： 1342-8349
28aPS-60 Spectroscopic ellipsometry of noble-metal nanocomposite films

Tomita S., Fujii M., Hayashi S.

Meeting abstracts of the Physical Society of Japan　61　(1)　738-738　2006/03/04
Publisher: The Physical Society of Japan (JPS)
ISSN： 1342-8349
Tuning magnetic interactions in ferromagnetic-metal nanoparticle systems

S Tomita, K Akamatsu, H Shinkai, S Ikeda, H Nawafune, C Mitsumata, T Kashiwagi, M Hagiwara

PHYSICAL REVIEW B　71　(18)　180414(R)1-4　2005/05

DOI： 10.1103/PhysRevB.71.180414 　

ISSN： 1098-0121
Structure control and magnetic resonance in Ni nanocomposite films

TOMITA S., AKAMATSU K., SHINKAI H., IKEDA S., NAWAFUNE H., MITSUMATA C., KASHIWAGI T., HAGIWARA M.

28　139-139　2004/09/21
Defective carbon onions in interstellar space as the origin of the optical extinction bump at 217.5 nanometers Peer-reviewed

Satoshi Tomita, Minoru Fujii, Shinji Hayashi

Astrophysical Journal　609　(1 I)　220-224　2004/07/01

DOI： 10.1086/420899 　

ISSN： 0004-637X

eISSN： 1538-4357
Ferromagnetic resonance study of diluted Fe nanogranular films Peer-reviewed

Satoshi Tomita, Masayuki Hagiwara, Takanari Kashiwagi, Chusei Tsuruta, Yoshio Matsui, Minoru Fujii, Shinji Hayashi

Journal of Applied Physics　95　(12)　8194-8198　2004/06/15

DOI： 10.1063/1.1739526 　

ISSN： 0021-8979
Ferromagnetic resonance in diluted ferromagnetic-metal nanocomposite films

TOMITA S., KASHIWAGI T., HAGIWARA M., MATSUI Y., FUJII M., HAYASHI S.

27　454-454　2003/09/01

ISSN： 1340-8100
Ferromagnetic resonance in diluted iron nanocomposite films

Tomita S., Kashiwagi T., Hagiwara M., Fujii M., Hayashi S.

Meeting abstracts of the Physical Society of Japan　58　(2)　394-394　2003/08/15
Publisher: The Physical Society of Japan (JPS)
ISSN： 1342-8349
Absorption spectroscopy of carbon onions prepared by annealing diamond nanoparticle

Tsukuda Y., Tomita S., Fujii M., Hayashi S.

Meeting abstracts of the Physical Society of Japan　56　(2)　596-596　2001/09/03
Publisher: The Physical Society of Japan (JPS)
ISSN： 1342-8349
Magnetic properties of Ni_<1-x>Co_x-C nanogranular thin films prepared by co-sputtering method

TOMITA Satoshi, ADACHI Hiroaki, FUJII Minoru, HAYASHI Shinji

25　261-261　2001/09/01

ISSN： 1340-8100
Magnetic properties of CoNi-C nanogranular thin films

Adachi H., Tomita S., Fujii M., Hayashi S.

Meeting abstracts of the Physical Society of Japan　56　(1)　358-358　2001/03/09
Publisher: The Physical Society of Japan (JPS)
ISSN： 1342-8349
Synthesis and characterization of carbon onion thin films

Adachi H., Mamezaki O., Tomita S., Fujii M., Hayashi S.

Meeting abstracts of the Physical Society of Japan　55　(2)　692-692　2000/09/10
Publisher: The Physical Society of Japan (JPS)
ISSN： 1342-8349
Structural studies of carbon onions by synchrotron X-ray diffraction

Tomita S., Fujii M., Hayashi S., Burian A., Dore J. C.

Meeting abstracts of the Physical Society of Japan　55　(2)　691-691　2000/09/10
Publisher: The Physical Society of Japan (JPS)
ISSN： 1342-8349
ESR Study of Carbon Onions

Tomita Satoshi, Sakurai Takahiro, Ohta Hitoshi, Fujii Minoru, Hayashi Shinji, Yamamoto Keiichi

Meeting abstracts of the Physical Society of Japan　55　(1)　717-717　2000/03/10
Publisher: The Physical Society of Japan (JPS)
ISSN： 1342-8349
Synthesis and formation mechanism of filled carbon nanocapsuules

Hikita M., Tomita S., Fujii M., Hayashi S., Yamamoto K., Yasuda H.

Meeting abstracts of the Physical Society of Japan　55　(1)　741-741　2000/03/10
Publisher: The Physical Society of Japan (JPS)
ISSN： 1342-8349
27pE-4 Transformation of carbon onions into diamond by heat-treerment in an oxidizing environment

Tomita Satoshi, Fujii Minoru, Hayashi Shinji, Yamamoto Keiichi

Meeting abstracts of the Physical Society of Japan　54　(2)　773-773　1999/09/03
Publisher: The Physical Society of Japan (JPS)
ISSN： 1342-8349
EELS Study of Onion-Like Carbon Produced from Nanocrystalline Diamond

TOMITA Satoshi, FUJII Minoru, HAYASHI Shinji, YAMAMOTO Keiichi

Meeting abstracts of the Physical Society of Japan　53　(2)　292-292　1998/09/05
Publisher: The Physical Society of Japan (JPS)
ISSN： 1342-8349
8a-D-1 Raman Scattering from Onion-Like Carbon Formed by High Temperature Thermal Annealing

Tomita S., Fujii M., Hayashi S., Yamamoto K.

Meeting abstracts of the Physical Society of Japan　52　(2)　301-301　1997/09/16
Publisher: The Physical Society of Japan (JPS)
ISSN： 1342-8349

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Books and Other Publications 2

Nanomagnetic Materials: Fabrication, Characterization and Application

Satoshi Tomita, Tetsuya Ueda

Elsevier　2021/07

ISBN: 9780128223499
メタマテリアルのつくりかた : 光を曲げる「磁場」とベリー位相 = New concepts of metamaterials : Berry Phase and Artificial "Magnetic Fields" Acting on Light

冨田, 知志, 澤田, 桂

共立出版　2019/07

ISBN: 9784320035720

Presentations 16

時間変調磁性メタマテリアルによる非対称な周波数上方/下方変換

児玉俊之, 千葉貴裕, 菊池伸明, 岡本聡, 大野誠吾, 冨田知志

2025年第72回応用物理学会春季学術講演会　2025/03/15
磁気カイラルメタ分子による巨大非相反透過

三田健太郎, 児玉俊之, 上田哲也, 中西俊博, 澤田桂, 千葉貴裕, 冨田知志

2025年第72回応用物理学会春季学術講演会　2025/03/14
磁気カイラルメタマテリアルでの非相反な超強結合マグノンポラリトン

冨田知志, 三田健太郎, 児玉俊之, 上田哲也, 中西俊博, 澤田桂, 千葉貴裕

分子研研究会「キラリティが関連する動的現象」　2025/03/10
時変メタマテリアルと人工ブラックホール Invited

冨田知志

レーザー学会第45回年次大会　2025/01/22
Ultrastrongly-coupled magnon-polaritons in magnetochiral meta-molecules

Satoshi Tomita, Kentaro Mita, Toshiyuki Kodama, Tetsuya Ueda, Toshihiro Nakanishi, Kei Sawada, Takahiro Chiba

The 16th Joint Conference on Magnetism and Magnetic Materials and Intermag　2025/01/17
Ultrastrongly-coupled non-reciprocal magnon-polaritons in magnetochiral metamaterials

2024/11/26
マイクロ波の周波数変換に向けた透磁率時間変調メタマテリアル

児玉俊之, 菊池伸明, 岡本聡, 大野誠吾, 冨田知志

第48回日本磁気学会学術講演会　2024/09/25
磁気カイラルメタ分子での超強結合非相反マグノンポラリトンの観測

冨田知志, 三田健太郎, 児玉俊之, 上田哲也, 中西俊博, 澤田桂, 千葉貴裕

第48回日本磁気学会学術講演会　2024/09/25
時間変調磁性メタマテリアルを用いたマイクロ波周波数変換

児玉俊之, 菊池伸明, 岡本聡, 大野誠吾, 冨田知志

第85回応用物理学会秋季学術講演会　2024/09/18
磁気カイラルメタ分子でのエレクトロマグノンポラリトンの観測

三田健太郎, 児玉俊之, 千葉貴裕, 上田哲也, 中西俊博, 澤田桂, 冨田知志

日本物理学会第79回年次大会　2024/09/18
磁気カイラルメタマテリアルでの超強結合非相反マグノンポラリトン

冨田知志, 三田健太郎, 児玉俊之, 上田哲也, 中西俊博, 澤田桂, 千葉貴裕

日本物理学会第79回年次大会　2024/09/16
Nonlinear Variation in Permeability Towards Time-varying Metamaterials

Toshiyuki Kodama, Nobuaki Kikuchi, Satoshi Okamoto, Seigo Ohno, Satoshi Tomita

The 18th International Congress on Artificial Materials for Novel Wave Phenomena (Metamaterials'2024)　2024/09/11
Pure Moving Optical Media by Magnetochiral Metasurfaces

Satoshi Tomita, Toshiyuki Kodama, Kei Sawada, Toshihiro Nakanishi

The 18th International Congress on Artificial Materials for Novel Wave Phenomena (Metamaterials'2024)　2024/09/09
Towards Time-varying Magnetic Metamaterials Invited

Toshiyuki Kodama, Nobuaki Kikuchi, Satoshi Okamoto, Seigo Ohno, Satoshi Tomita

The 8th A3 Metamaterials Forum　2024/07/24
Observation of Current-induced Nonlinear Spin Torque in Pt-Py Bilayers

Toshiyuki Kodama, Nobuaki Kikuchi, Takahiro Chiba, Satoshi Okamoto, Seigo Ohno, Satoshi Tomita

International Conference on Magnetism　2024/07/05
Metamaterials and metasurfaces with broken symmetries Invited

Satoshi Tomita

The 45th Annual Conference on Magnetics in Japan　2021/08/31

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Research Projects 15

Chimera Quasiparticles: Architecture

Offer Organization: Japan Society for the Promotion of Science

System: Grants-in-Aid for Scientific Research

Category: Grant-in-Aid for Transformative Research Areas (A)

Institution: Osaka University

2024/04 - 2029/03
時間変調メタマテリアル非線形フォトニクスの基盤構築

冨田知志、金森義明

Offer Organization: 科学技術振興機構

System: 戦略的な研究開発の推進戦略的創造研究推進事業 CREST

Institution: 東北大学

2021 - 2026

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微小電気機械システム(MEMS)と超高周波磁性体によるナノ・マイクロ構造を統合し、実効的な誘電率と透磁率を真の意味で高速変調する時間変調メタマテリアルを創成する。非線形光学を利用した人工ラマンシフトの実現を通じて、チューナブル・ポータブル・室温動作可能なTHz新光源デバイスを開発する。これによりBeyond 5G / 6G情報通信に向けた、時間変調メタマテリアル非線形フォトニクスの基盤を構築する。
実験的ブラックホール研究の新展開

浅井祥仁, 稲田聡明, 中山和之, 笠原健司, 中西俊博, 久門尚史, 冨田知志, 澤田桂

Offer Organization: 日本学術振興会

System: 科学研究費助成事業

Category: 基盤研究(B)

Institution: 東京大学

2020/04/01 - 2023/03/31

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ブラックホール時空の幾何学的性質を特殊な物性系の分散構造により再現し、そのホライゾンで生じるHawking輻射等の量子過程の研究が進んでいる。具体的には、これまで、87Rb BEC系のフォノンを用いた実験や誘電体中の光カー効果を用いた実験、および流体におけるdeep waveを用いた実験等が行われている。またスピン波マグノン系では天体ブラックホールよりも高いHawking温度の実現が可能である。そこで本研究ではこれら従来の系およびそれに該当しない新たな系に対し、ブラックホールの量子性に関する足がかりとなる知見を得ることを目的とする。本年度では、従来よりも高いホーキング温度を持つ強磁性体-スピン波系を用いてBHの時空構造を実現しその量子的ふるまいを調べるために、測定系の構築およびテストサンプルの作製を行い、狭窄構造を変化させた際のスピン波応答を系統的に調査した。また並行してGPUを用いた数値シミュレーションを進めており、3次元有限差分計算（FDM）の結果を日本物理学会に発表した。
Berry phase optics using magneto-electric metasurfaces

Offer Organization: Japan Society for the Promotion of Science

System: Grants-in-Aid for Scientific Research

Category: Grant-in-Aid for Scientific Research (B)

Institution: Tohoku University

2020/04/01 - 2023/03/31
Verification of quantum levitation by MEMS metamaterials

TOMITA Satoshi

Offer Organization: Japan Society for the Promotion of Science

System: Grants-in-Aid for Scientific Research

Category: Grant-in-Aid for Challenging Research (Exploratory)

2017/06/30 - 2019/03/31

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For realizing quantum levitation, we conducted a feasibility study of metamaterial-integrated micro-electro mechanical systems (MEMS) cantilevers. Designs of the cantilevers were discussed based on preliminary experiments and numerical simulation for metallic structures and magnetic films. We decided fabrication of single-beam cantilevers integrated with double-fishnet-type metamaterials having a negative refractive index. We prepared samples using micro-fabrication processes utilized in MEMS. While fabrication of the single-beam cantilevers integrated with silver double-fishnet-type metamaterials has not yet achieved, we have succeeded in preparing a cantilever integrated with aluminum fishnet-type metamaterials.
Development of topological spin-device utilizing quasi-peridoc strucuture

Nakayama Kazuyuki, Manago Takashi

Offer Organization: Japan Society for the Promotion of Science

System: Grants-in-Aid for Scientific Research

Category: Grant-in-Aid for Scientific Research (C)

Institution: Fukuoka University

2016/04/01 - 2019/03/31

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We studied the propagation characteristics of spin waves using a magnonic crystal with a quasi-periodic structure. Using permalloy or nickel as a material, the LLG equation was numerically solved for the stripe and grating structure. Band structures and eigenmodes were analyzed. We found an interesting structure in which localized states appear at the interface of quasi-periodic magnonic crystals connected with different quasi-periodic sequences. In order to evaluate the characteristics of spin waves, it is necessary to study measurement using the S-parameter method with a coplanar waveguide antenna. Therefore, we conducted experimental and numerical studies on the characteristics of the antenna structures used in spin wave detection. As a consequence, an interesting result was obtained that the nonreciprocity of spin waves can be controlled by the antenna width.
Electromagnetic wave beam controlled by nonreciprocal metamaterials

Ueda Tetsuya, TOMITA Satoshi, ITOH Tatsuo, POROKHNYUK Andrey

Offer Organization: Japan Society for the Promotion of Science

System: Grants-in-Aid for Scientific Research

Category: Grant-in-Aid for Scientific Research (B)

Institution: Kyoto Institute of Technology

2014/04/01 - 2017/03/31

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In this work, we first proposed circularly polarized radiation from pseudo-traveling wave resonance antennas based on nonreciprocal metamaterials, and demonstrated it with polarization rotation direction switched by the applied dc magnetic field in the experiment. Second, combination of curvature of lines and asymmetric insertion of inductive stubs has been proposed and demonstrated to enhance the nonreciprocity. Third, design techniques of dispersion-less nonreciprocity in the metamaterials have been established and demonstrated to reduce beam squint to be solved in beam scanning antennas.
Creation of synthetic gauge fields for light using magnetochiral metamaterials

Tomita Satoshi, KODAMA Toshiyuki

Offer Organization: Japan Society for the Promotion of Science

System: Grants-in-Aid for Scientific Research

Category: Grant-in-Aid for Scientific Research (B)

Institution: Nara Institute of Science and Technology

2014/04/01 - 2017/03/31

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We studied electromagnetism in structured metamaterials with simultaneous time-reversal and space-inversion symmetry breaking by magnetism and chirality. Experimental direct observation of optical magnetochiral effects by a single metamolecule with magnetism and chirality was demonstrated at microwave frequencies. Numerical simulations reproduced well the experimental results and predicted the emergence of giant magnetochiral effects by combining resonances in the metamolecule. Microwave transmission patters through magnetochiral and chiral metamaterials were measured. Toward a higher frequency, the metamolecule was miniaturized in the presence of ferromagnetic resonance in a cavity and coplanar waveguide. Application of generalized magneto-optical ellipsometry for microwaves was studied. This work paves the way to the realization of synthetic gauge fields for electromagnetic waves, and to development of meta-condensed-matter physics using metamaterials.
Fabrication and physics of periodic metamaterials in optical regime

ISHIHARA Teruya, NISHIMURA Naoshi, ONODA Masaru, TOMITA Satoshi, SAWADA Kei, OHNO Seigo, NAKAYAMA Kazuyuki, NIINO Kazuki, MATSUBARA Masakazu, TSURU Toshihide, WANG Wu, ISAKARI Hiroshi, NIINO Kazuki, BAI Qiang

Offer Organization: Japan Society for the Promotion of Science

System: Grants-in-Aid for Scientific Research

Category: Grant-in-Aid for Scientific Research on Innovative Areas (Research in a proposed research area)

Institution: Tohoku University

2010/04/01 - 2015/03/31

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By means of experiments, electromagnetic field simulation and theoretical analysis, novel electromagnetic responses in sub-wavelength artificial structures have been investigated, focusing on periodic metamaterials in optical regime. Microscopic mechanism of photo-induced voltage due to optical rectification in structured thin-metallic film was clarified further after experiments of various designs and conditions. Basic theory on topology optimization for metamaterials was established. Opitcal lighography based on microscopic electric field distribution near the metallic metamaterial surfaces were proposed. Giant magnetochiral effect in metamolecule consisting of ferite and copper coil was discovered experimentally in microwave region and analyzed theoretically.
Investigation of magnetization dynamics in spin-wave metamaterials

TOMITA SATOSHI, MITSUMATA Chiharu

Offer Organization: Japan Society for the Promotion of Science

System: Grants-in-Aid for Scientific Research

Category: Grant-in-Aid for Challenging Exploratory Research

Institution: Nara Institute of Science and Technology

2011 - 2012

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We constructed an analytical model for precession of a magnetic moment in spin-wave metamaterials consisting of interacting magnetic nanoparticles. It is revealed that the Gilbert damping factor can be controlled by the structure of the metamaterials. Additionally, analytical equations of the macroscopic damping factor were obtained for spin-torque oscillation in the spin-wave metamaterials. The equations indicated that the effective damping factor is dependent on the spin currents whereas the frequency of spin torque oscillation is independent of the spin currents. Moreover, we have experimentally succeeded in fabricating artificial chiral structures made of ferromagnetic-metals and observing a characteristic signal in electron spin resonance spectra. The present study is bringing together metamaterials and spintronics via spin-waves.
Surface-emitting organic laser based on stimulated resonant Raman scattering

YANAGI Hisao, YAMASHITA Kenichi

Offer Organization: Japan Society for the Promotion of Science

System: Grants-in-Aid for Scientific Research

Category: Grant-in-Aid for Scientific Research (C)

Institution: Nara Institute of Science and Technology

2010 - 2012

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Surface-emitting organic laser devices were fabricated by introducing DBR resonators and photonic crystals into dye-doped and π-conjugated thin films. Raman laser oscillations were obtained when the stimulated resonant Raman scattering from those polymer films was coupled with the lasing modes of those resonators. Towards future development of electrically pumped organic lasers, light-emitting field-effect transistors with ambipolar carrier characteristics were fabricated with liquid crystalline π-conjugated polymer films, and electroluminescence was successfully obtained under AC-gate operations.
Studies of the interaction between semiconductor nanocrystals and metal localized surface plasmons by photoluminescence and Raman scattering measurements

YAMAMOTO Aishi, TOMITA Satoshi

Offer Organization: Japan Society for the Promotion of Science

System: Grants-in-Aid for Scientific Research

Category: Grant-in-Aid for Scientific Research (C)

2010 - 2012

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We studied photoluminescence intensity of semiconductor nanocrystals in the vicinity of metals. With a decrease in metal-semiconductor distance, the PL intensity was enhanced, and then it decreased dramatically. These results can be explained by considering both the light enhancement effect and the energy transfer effect from the semiconductors induced by the free electrons in the metals. The metal-semiconductor distance for the highest photoluminescence efficiency was found.
Realization of subwavelength imaging in the visible light region using multi-layer metamaterials consisting of metal and dielectric ultra-thin films

TOMITA Satoshi

Offer Organization: Japan Society for the Promotion of Science

System: Grants-in-Aid for Scientific Research

Category: Grant-in-Aid for Young Scientists (B)

Institution: Nara Institute of Science and Technology

2007 - 2009

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Multi-layer metamaterials consisting of Al and MgF_2 layers or Ag and SiO_2 layers have been prepared. Photon transport via coupled surface plasmon polaritons in the metamaterials has been studied experimentally using an attenuated total reflection and resonant photon tunneling measurement system. We found that Ag-SiO_2 metamaterials have a lower intrinsic loss in comparison with Al-MgF_2 metamaterials. Moreover, we revealed that MIM structures consisting of Ag and SiO_2 convey photons resonantly via a characteristic guided mode.
構造制御したπ共役ポリマー薄膜の誘導共鳴ラマン散乱によるレーザー作用

柳久雄, 冨田知志, 山下兼一

Offer Organization: 日本学術振興会

System: 科学研究費助成事業

Category: 特定領域研究

Institution: 奈良先端科学技術大学院大学

2007 - 2008

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発光性のポリフェニレンビニレン(PPV)やジスチリルベンゼン誘導体をドープした薄膜導波路をパルスレーザーを用いて光励起すると、誘導共鳴ラマン散乱(SRRS)に基づく共振器をもたないレーザー作用が室温で得られる。しかし、これらのポリマー薄膜導波路中では分子鎖の配列が無秩序であるため、そのSRRS強度はπ共役オリゴマーが自己組織配列した低次元結晶に比べて弱い。そこで本研究では、種々の共振器構造を導入したポリマー薄膜導波路を形成することにより、SRRSと共振器モードとのカップリングによるSRRSの増強を目的として研究を行い、以下の成果を得た。 (1)回折格子上にジスチリルベンゼン誘導体(BDTASB)をドープしたポリマー薄膜をスピンコートした分布帰還型(DFB)共振器薄膜において、ASEの波長帯で共振モードによるレーザー発振が得られた。さらに、起波長を変化させながらパルス光励起し、DFB共振モードとSRRSをカップリングさせることにより、SRRSのピーク強度の増強およびノイズとなるASEを低減することができた。 (2)光ナノインプリント法を用いて、ローダミン色素(RB)およびBDTASBをドープした紫外線硬化性樹脂薄膜に紫外光照射下でモールドを転写することにより、DFBおよびディスク共振器構造をもつポリマー薄膜導波路を作製した。 (3)DFB共振器を光ナノインプリントしたRBドープ薄膜から、DFBモードによる半値幅〜0.5nmの発振ピークが得られた。また、ディスク振器からはASEスペクトルに重なって周期的な発光ピークが観察され、whispering galleryモードによる発振が示唆された。 (4)DFB共振器を光ナノインプリントしたBDTASR薄膜を励起波長を変えて励起することにより、SRRSとDFBモードのカップリングによるSRRSの増強が確認された。
たまねぎ状炭素微粒子の創製と物性に関する研究

冨田知志

Offer Organization: 日本学術振興会

System: 科学研究費助成事業

Category: 特別研究員奨励費

Institution: 神戸大学

1999 - 2001

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Teaching Experience 7

物理学入門　東北大学
フロンティア科目「ミカタの科学」　東北大学
Introductory Science Experiments for Humanities and Social Sciences　Tohoku University
Introductory Science Experiments　Tohoku University
学問論演習「科学のミカタ」　東北大学
展開ゼミ「ミカタの科学」　東北大学
基礎ゼミ「科学のミカタ」　東北大学

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