Details of the Researcher

PHOTO

Kanako Watanabe
Section
Graduate School of Engineering
Job title
Assistant Professor
Degree

  • 博士（工学）（東北大学）

  • 修士（工学）（東北大学）

Research History 3

  • 2019/04 - Present
    Tohoku University　School of Engineering, Department of Chemical Engineering　Assistant professor

  • 2020/07 - 2022/07
    Overseas Research Fellowships　Guest researcher

  • 2016/04 - 2019/03
    日本学術振興会　特別研究員 DC-1

Education 4

  • Tohoku University

    2016/04 - 2019/03

  • Tohoku University

    2014/04 - 2016/03

  • Tohoku University　Faculty of Engineering　Department of Applied Chemistry, Chemical Engineering and Biomolecular Engineering

    2011/04 - 2014/03

  • Sendai National College of Technology

    2006/04 - 2011/03

Committee Memberships 4

  • 化学工学会　材料・界面部会事務局 会計担当

    2025/04 - Present

  • 化学工学会東北支部　ニュースレター担当

    2021/04 - Present

  • 文部科学省科学技術・学術政策研究所科学技術予測センター　NISTEP専門調査員

    2020/04 - 2021/03

  • 化学工学会東北支部　WEB担当

    2019/04 - 2021/03

Professional Memberships 2

  • 日本化学会

  • THE SOCIETY OF CHEMICAL ENGINEERS, JAPAN

Research Interests 5

  • materials interfaces

  • nanoparticles

  • rattle-type particles

  • material processing

  • (nano)particle-based materials

Research Areas 2

  • Manufacturing technology (mechanical, electrical/electronic, chemical engineering) / Chemical reaction and process system engineering /

  • Nanotechnology/Materials / Nanomaterials /

Awards 9

  1. 2024年度化学工学会研究奨励賞

    2024/12　公益社団法人 化学工学会　ナノ・微粒子材料の局所集積化による新機能創成

  2. 第29回青葉工学研究奨励賞

    2023/12　一般財団法人 青葉工学振興会　微粒子の空間配置制御により機能を発現する新しい材料形態の開拓

  3. Healthcare&Science of Forbes 30 Under 30 Asia list – Class of 2020

    2020/04　Forbes

  4. L'Oréal-UNESCO For Women in Science Japanese fellowship

    2019/07

  5. 平成30年度 総長優秀学生賞

    2019/03　国立大学法人東北大学

  6. 第9回（平成30年度）育志賞

    2019/03　独立行政法人日本学術振興会　外場を用いた粒子の空間分布制御

  7. Elsevier Best Poster Award

    2018/09　32nd Conference of the European Colloid and Interface Society　Rattle-type colloidal crystals incorporating a movable silica/titania core developed for switchable materials

  8. Poster Award

    2016/11　12th Japan-Korea Symposium on Materials & Interfaces　Controls over motion and location of movable cores incorporated into yolk/shell colloidal crystal by external electric field

  9. 優秀ポスター賞

    2014/09　化学工学会第46回秋季大会　電場応答性コア粒子内包型サブミクロンサイズYolk/Shell粒子の合成

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Papers 35

  1. Visualization of the packing structure of packed beds with micron-sized particles using confocal microscopy to estimate their pressure drop Peer-reviewed

    Hiroki Nishida, Tom A.J. Welling, Hikaru Namigata, Kousuke Hiromori, Keishi Suga, Daisuke Nagao, Kanako Watanabe

    Chemical Engineering Journal　515　163519-163519　2025/07

    Publisher: Elsevier BV

    DOI： 10.1016/j.cej.2025.163519 　

    ISSN： 1385-8947

  2. A practical process for effective thickening of silica shells formed onto spherical cores by considering the variation in ionic strength during sol-gel reaction Peer-reviewed

    Kanako Watanabe, Ryuto Fujinuma, Hana Aizawa, Hikaru Namigata, Tom A.J. Welling, Keishi Suga, Daisuke Nagao

    Microporous and Mesoporous Materials　379　113274-113274　2024/11

    Publisher: Elsevier BV

    DOI： 10.1016/j.micromeso.2024.113274 　

    ISSN： 1387-1811

  3. Probing Ion Diffusion and Ion Sieving through Hollow Porous Silica Shells by Imaging the Mobility of Colloids Inside the Shells Peer-reviewed

    Kanako Watanabe, Tom A. J. Welling, Rafael G. Mendes, Zahra Peimanifard, Maarten Bransen, Hikaru Namigata, Marijn A. van Huis, Daisuke Nagao, Alfons van Blaaderen

    Advanced Materials Interfaces　2024/06/29

    Publisher: Wiley

    DOI： 10.1002/admi.202400333 　

    ISSN： 2196-7350

    eISSN： 2196-7350

    More details Close

    Abstract Ionic transport through porous membranes and porous materials has received enormous attention due to its importance to many applications. An innovative methodology is proposed to study ion diffusion and ion sieving through mesoporous silica membranes (shells). The mobility of fluorescently labeled core particles within a hollow porous shell, filled with an index‐matched electrolyte solution, is observed using confocal laser scanning microscopy. The core motion range, i.e., the area explored by the core within the hollow compartment, sensitively changed depending on the local ionic concentration. Monitoring transitions in the core motion range is a practical way to detect which ions can migrate through the shells and on what timescale. For instance, lithium and chloride ions easily diffused through the porous silica shells, resulting in a core motion range that changed relatively quickly upon change of the ion concentrations outside of the shell. However, the motion range changed significantly slower upon changing to a bigger cation (tetraoctylammonium ion). This proof of principle experiment can be explained by the Gibbs‐Donnan effect, revealing that the detection of core motion ranges is a good probe to measure both ion diffusion and ion sieving through porous membranes.

  4. Switchable Bragg Reflections via Controllable Inner Particle Motion in Yolk–Shell Colloidal Crystals Peer-reviewed

    Hikaru Namigata, Tom A. J. Welling, Kanako Watanabe, Keishi Suga, Arnout Imhof, Alfons van Blaaderen, Daisuke Nagao

    ACS Applied Optical Materials　2023/12/20

    Publisher: American Chemical Society (ACS)

    DOI： 10.1021/acsaom.3c00392 　

    ISSN： 2771-9855

    eISSN： 2771-9855

  5. Highly Reflective and Transparent Shell-Index-Matched Colloidal Crystals of Core–Shell Particles for Stacked RGB Films Peer-reviewed

    Tom A.J. Welling, Keisuke Kurioka, Hikaru Namigata, Keishi Suga, Daisuke Nagao, Kanako Watanabe

    ACS Applied Nano Materials　2023/11/07

    Publisher: American Chemical Society (ACS)

    DOI： 10.1021/acsanm.3c03940 　

    ISSN： 2574-0970

    eISSN： 2574-0970

  6. Surface lattice resonance in three-dimensional plasmonic arrays fabricated via self-assembly of silica-coated gold nanoparticles Peer-reviewed

    Masashi Hasegawa, Kanako Watanabe, Hikaru Namigata, Tom A.J. Welling, Keishi Suga, Daisuke Nagao

    Journal of Colloid and Interface Science　633　226-232　2023/03

    Publisher: Elsevier BV

    DOI： 10.1016/j.jcis.2022.11.077 　

    ISSN： 0021-9797

  7. Frequency-controlled electrophoretic mobility of a particle within a porous, hollow shell Peer-reviewed

    Tom A.J. Welling, Albert Grau-Carbonell, Kanako Watanabe, Daisuke Nagao, Joost de Graaf, Marijn A. van Huis, Alfons van Blaaderen

    Journal of Colloid and Interface Science　627　761-773　2022/12

    Publisher: Elsevier BV

    DOI： 10.1016/j.jcis.2022.07.091 　

    ISSN： 0021-9797

  8. Multipoint Lock-and-Key Assembly of Particles with Anisotropic Dents toward Modeling Rigid Macromolecules in a Colloidal Scale Peer-reviewed

    Kanako Watanabe, Takuya Shimura, Akira Nagasawa, Daisuke Nagao

    Langmuir　37　(31)　9451-9456　2021/08/10

    Publisher: American Chemical Society (ACS)

    DOI： 10.1021/acs.langmuir.1c01163 　

    ISSN： 0743-7463

    eISSN： 1520-5827

  9. Tunability of Interactions between the Core and Shell in Rattle-Type Particles Studied with Liquid-Cell Electron Microscopy Peer-reviewed

    Tom A. J. Welling, Kanako Watanabe, Albert Grau-Carbonell, Joost de Graaf, Daisuke Nagao, Arnout Imhof, Marijn A. van Huis, Alfons van Blaaderen

    ACS Nano　2021/06/16

    Publisher: American Chemical Society (ACS)

    DOI： 10.1021/acsnano.1c03140 　

    ISSN： 1936-0851

    eISSN： 1936-086X

  10. Polyethylenimine-assisted synthesis of hollow silica spheres without shape deformation Peer-reviewed

    Kanako Watanabe, Kotaro Kuroda, Daisuke Nagao

    Materials Chemistry and Physics　262　124267-124267　2021/04

    Publisher: Elsevier BV

    DOI： 10.1016/j.matchemphys.2021.124267 　

    ISSN： 0254-0584

  11. Observation of Undamped 3D Brownian Motion of Nanoparticles Using Liquid‐Cell Scanning Transmission Electron Microscopy International-coauthorship Peer-reviewed

    Tom A. J. Welling, Sina Sadighikia, Kanako Watanabe, Albert Grau‐Carbonell, Maarten Bransen, Daisuke Nagao, Alfons van Blaaderen, Marijn A. van Huis

    Particle & Particle Systems Characterization　37　(6)　2000003-2000003　2020/06

    Publisher: Wiley

    DOI： 10.1002/ppsc.202000003 　

    ISSN： 0934-0866

    eISSN： 1521-4117

  12. Compartmentalization of gold nanoparticle clusters in hollow silica spheres and their assembly induced by an external electric field International-coauthorship Peer-reviewed

    Kanako Watanabe, Tom A.J. Welling, Sina Sadighikia, Haruyuki Ishii, Arnout Imhof, Marijn A. van Huis, Alfons van Blaaderen, Daisuke Nagao

    Journal of Colloid and Interface Science　566　202-210　2020/04

    Publisher: Elsevier BV

    DOI： 10.1016/j.jcis.2020.01.094 　

    ISSN： 0021-9797

  13. Depletion-interaction-driven assembly of golf ball-like particles for development of colloidal macromolecules Peer-reviewed

    Kanako Watanabe, Yui Tajima, Takuya Shimura, Haruyuki Ishii, Daisuke Nagao

    Journal of Colloid and Interface Science　534　81-87　2019/01

    Publisher: Elsevier BV

    DOI： 10.1016/j.jcis.2018.08.117 　

    ISSN： 0021-9797

  14. External-Stimuli-Assisted Control over Assemblies of Plasmonic Metals Peer-reviewed

    Kanako Watanabe, Kotaro Kuroda, Daisuke Nagao

    Materials　11　(5)　794-794　2018/05/15

    Publisher: MDPI AG

    DOI： 10.3390/ma11050794 　

    ISSN： 1996-1944

    eISSN： 1996-1944

  15. The plasmonic properties of gold nanoparticle clusters formed via applying an AC electric field Peer-reviewed

    K. Watanabe, E. Tanaka, H. Ishii, D. Nagao

    Soft Matter　14　(17)　3372-3377　2018

    Publisher: Royal Society of Chemistry (RSC)

    DOI： 10.1039/c8sm00097b 　

    ISSN： 1744-683X

    eISSN： 1744-6848

  16. Yolk/Shell Colloidal Crystals Incorporating Movable Cores with Their Motion Controlled by an External Electric Field Peer-reviewed

    Kanako Watanabe, Haruyuki Ishii, Mikio Konno, Arnout Imhof, Alfons van Blaaderen, Daisuke Nagao

    Langmuir　33　(1)　296-302　2017/01/10

    DOI： 10.1021/acs.langmuir.6b03116 　

    ISSN： 0743-7463

    eISSN： 1520-5827

  17. Rattle-Type Colloidal Crystals Composed of Spherical Hollow Particles Containing an Anisotropic, Movable Core Peer-reviewed

    Kanako Watanabe, Daisuke Nagao, Haruyuki Ishii, Mikio Konno

    LANGMUIR　31　(19)　5306-5310　2015/05

    DOI： 10.1021/acs.langmuir.5b01148 　

    ISSN： 0743-7463

  18. Effects of Mesoporous Silica Particle Loading on the Properties of PDMS-Based Mixed Matrix Membrane Peer-reviewed

    Tomoya Yoshihara, Keishi Suga, Hikaru Namigata, Kanako Watanabe, Tom A.J. Welling, Kumiko Hayashi, Lester C. Geonzon, Koichi Mayumi, Daisuke Nagao

    Chemical Engineering Journal Advances　100803-100803　2025/07

    Publisher: Elsevier BV

    DOI： 10.1016/j.ceja.2025.100803 　

    ISSN： 2666-8211

  19. Supraparticles with Tailored Absorption and Their Optical Performance as Photonic Pigments in Sustainable Water-Based Paint Peer-reviewed

    Tom A. J. Welling, Keisuke Kurioka, Gantulga Tuguldur, Natsuho Tsunetomi, Hikaru Namigata, Keishi Suga, Kanako Watanabe, Daisuke Nagao

    ACS Applied Optical Materials　2025/04/17

    Publisher: American Chemical Society (ACS)

    DOI： 10.1021/acsaom.5c00080 　

    ISSN： 2771-9855

    eISSN： 2771-9855

  20. High-luminescence polymer/ceramic pressure-sensitive paint employing low-refractive-index silica nanoparticles Peer-reviewed

    Masaki Okawa, Tsubasa Ikami, Yuma Yamagishi, Kanako Watanabe, Hiroki Nagai

    Measurement Science and Technology　36　(3)　035104-035104　2025/02/11

    Publisher: IOP Publishing

    DOI： 10.1088/1361-6501/adb065 　

    ISSN： 0957-0233

    eISSN： 1361-6501

    More details Close

    Abstract Pressure-sensitive paint (PSP) is an optical pressure-measurement technique that uses oxygen quenching. In unsteady PSP measurements, PSPs necessitate not only pressure sensitivity and response speed but also higher luminescence intensity. In this study, spherical silica nanoparticles are mixed into the paint to achieve a brighter luminescence. We prototype PSPs using particle size and mixing ratio as parameters and evaluate their performance. The results exhibit the luminescence intensity changes due to the low refractive index of silica; the smaller the particle size and the higher the particle ratio, the stronger the luminescence intensity. Silica-based PSPs are approximately 1.5 times brighter than titania-based PSP; which have frequently been used in previous studies. Additionally, a comprehensive performance investigation indicates that the silica-based PSP with the brightest formulation has a pressure sensitivity of 0.72 %/kPa with a response speed of 11.0 µs. These results prove that the higher luminescence is compatible with the high sensitivity and fast response using low-refractive index nanoparticles.

  21. Quantitative Characterization of Localized Hydrophobicity Surrounding Polymer Particle Surfaces for Aqueous Antibacterial Colloids Peer-reviewed

    Akira Nagasawa, Kensuke Fujishima, Keishi Suga, Kanako Watanabe, Daisuke Nagao

    Langmuir　41　(1)　654-662　2024/12/30

    Publisher: American Chemical Society (ACS)

    DOI： 10.1021/acs.langmuir.4c03896 　

    ISSN： 0743-7463

    eISSN： 1520-5827

  22. Colloidal photonic crystals with tunable reflection wavelengths or intensities derived from their reconfigurable structures Peer-reviewed

    Hikaru Namigata, Kanako Watanabe, Tom A.J. Welling, Keishi Suga, Daisuke Nagao

    Colloid and Interface Science Communications　62　100806-100806　2024/09

    Publisher: Elsevier BV

    DOI： 10.1016/j.colcom.2024.100806 　

    ISSN： 2215-0382

  23. Bio‐Inspired Polydiacetylene Vesicles for Controlling Stimulus Sensitivity Peer-reviewed

    Shota Nakayama, Keishi Suga, Tatsuya Kamata, Kanako Watanabe, Hikaru Namigata, Tom A. J. Welling, Daisuke Nagao

    Macromolecular Reaction Engineering　2024/07/29

    Publisher: Wiley

    DOI： 10.1002/mren.202400016 　

    ISSN： 1862-832X

    eISSN： 1862-8338

    More details Close

    Abstract Polydiacetylene (PDA) is a kind of photopolymerizable polymer, which exhibits a unique color transition in response to external stimuli such as heat, pH, and solvent. PDAs are attractive as eye‐detection stimulus sensors with excellent time performance; however, the sensitivity of PDAs should be improved. Considering the biological membrane‐like structure of diacetylene (DA) vesicles, their modification by incorporating membrane lipids (e.g., diacylphosphocholine, PC) can be used to control the membrane fluidity, and consequently molecular ordering of DAs in the vesicle. Inspired by biological membrane systems, lipid vesicles are employed as platforms to generate PDA, and essential factors that influence the sensitivity of PDA are investigated. By lowering the polymerization temperature, the generation of PDA becomes slower, while the sensitivity improves. By adding PCs at the molar ratio of lipid:DA = 1:1, the sensitivity of PDA can be varied: the PCs with lower phase transition temperatures (Tm) made PDA insensitive, while the PCs with higher Tm improved the sensitivity as compared to pure poly(PCDA). It is concluded that the photopolymerization of DAs with a lower membrane fluidity induces highly sensitive PDA, while the photopolymerization of DAs with a higher membrane fluidity induces insensitive PDA with robustness toward stimuli.

  24. Double-inverse-opal structured films of a hydrogel framework and mobile inorganic particles Peer-reviewed

    Hikaru Namigata, Kanako Watanabe, Tom A.J. Welling, Keishi Suga, Daisuke Nagao

    Colloids and Surfaces A: Physicochemical and Engineering Aspects　690　133781-133781　2024/06

    Publisher: Elsevier BV

    DOI： 10.1016/j.colsurfa.2024.133781 　

    ISSN： 0927-7757

  25. A Quantitative Approach to Characterize the Surface Modification on Nanoparticles Based on Localized Dielectric Environments Peer-reviewed

    Taketo Mochizuki, Shota Sampei, Keishi Suga, Kanako Watanabe, Tom A. J. Welling, Daisuke Nagao

    Analytical Chemistry　96　(8)　3284-3290　2024/02/14

    Publisher: American Chemical Society (ACS)

    DOI： 10.1021/acs.analchem.3c03593 　

    ISSN： 0003-2700

    eISSN： 1520-6882

  26. Intracellular Magnetic Control over the Reversible Assembly of Silica-Based Magnetic Composite Particles for Photothermal Therapy Peer-reviewed

    Ryota Kameda, Taisei Suzuki, Ikumi Kato, Keishi Suga, Kanako Watanabe, Kimiko Nagino, Kumiko Hayashi, Satoshi Arai, Daisuke Nagao

    ACS Applied Nano Materials　6　3873-3883　2023/02/23

    Publisher: American Chemical Society (ACS)

    DOI： 10.1021/acsanm.2c05550 　

    ISSN： 2574-0970

    eISSN： 2574-0970

  27. Independent control over sizes and surface properties of polystyrene-based particles using multiple comonomers Peer-reviewed

    Akira Nagasawa, Kanako Watanabe, Keishi Suga, Daisuke Nagao

    Colloids and Surfaces A: Physicochemical and Engineering Aspects　656　130376-130376　2023/01

    Publisher: Elsevier BV

    DOI： 10.1016/j.colsurfa.2022.130376 　

    ISSN： 0927-7757

  28. Surface Characteristics of Antibacterial Polystyrene Nanoparticles Synthesized Using Cationic Initiator and Comonomers Peer-reviewed

    Keishi Suga, Makina Murakami, Shota Nakayama, Kanako Watanabe, Sayuri Yamada, Toshikazu Tsuji, Daisuke Nagao

    ACS Applied Bio Materials　5　(5)　2202-2211　2022/05/16

    Publisher: American Chemical Society (ACS)

    DOI： 10.1021/acsabm.2c00046 　

    ISSN： 2576-6422

    eISSN： 2576-6422

  29. Correlation of Secondary Particle Number with the Debye–Hückel Parameter for Thickening Mesoporous Silica Shells Formed on Spherical Cores Peer-reviewed

    Kota Fujimoto, Shunho Ishikawa, Kanako Watanabe, Haruyuki Ishii, Keishi Suga, Daisuke Nagao

    ACS Omega　6　(27)　17734-17740　2021/07/13

    Publisher: American Chemical Society (ACS)

    DOI： 10.1021/acsomega.1c02293 　

    ISSN： 2470-1343

    eISSN： 2470-1343

  30. A reinforced, high-κ ternary polymer nanocomposite dielectrics of PVDF, barium titanate nanoparticles, and TEMPO-oxidized cellulose nanofibers Peer-reviewed

    Masaki Sato, Haruyuki Ishii, Yoshiki Sueda, Kanako Watanabe, Daisuke Nagao

    Composites Part C: Open Access　5　100163-100163　2021/07

    Publisher: Elsevier BV

    DOI： 10.1016/j.jcomc.2021.100163 　

    ISSN： 2666-6820

  31. Pore expanding effect of hydrophobic agent on 100 nm-sized mesoporous silica particles estimated based on Hansen solubility parameters Peer-reviewed

    Kota Fujimoto, Kanako Watanabe, Shunho Ishikawa, Haruyuki Ishii, Keishi Suga, Daisuke Nagao

    Colloids and Surfaces A: Physicochemical and Engineering Aspects　609　125647-125647　2021/01

    Publisher: Elsevier BV

    DOI： 10.1016/j.colsurfa.2020.125647 　

    ISSN： 0927-7757

    eISSN： 1873-4359

  32. Double-Inverse-Opal-Structured Particle Assembly as a Novel Immobilized Photocatalytic Material Peer-reviewed

    Hikaru Namigata, Kanako Watanabe, Saya Okubo, Masashi Hasegawa, Keishi Suga, Daisuke Nagao

    Materials　14　(1)　28-28　2020/12/23

    Publisher: MDPI AG

    DOI： 10.3390/ma14010028 　

    eISSN： 1996-1944

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    Immobilization of photocatalysts on supports is an important method of adding highly active photocatalysts to a continuous flowing system without the need for photocatalyst recovery. However, direct immobilization prevents exposure to all photocatalytically active surfaces. Therefore, to immobilize particulate photocatalysts, while exposing the photocatalytic surface to organic pollutant water in a continuous flowing system, in this study, we employed double-inverse-opal (DIO) with periodically arranged, interconnected macropores, each containing a single photocatalytic particle. Increasing the macropore size successfully enhanced the decomposition rate of organic dye due to the high diffusion rate of dye molecules in the macropores of thin DIOs. However, an excessive increase in macropore size lowered the decomposition rate of dye molecules because an increase in DIO thickness caused the attenuation of light used to excite the photocatalytic particles. This study presents novel, immobilized photocatalytic DIO-structured particles that can be employed in continuous flowing reaction systems by tuning the photocatalytic particle size, macropore size, and DIO thickness.

  33. Polymer-coating of photocatalytic particles to prevent sintering in their calcination process Peer-reviewed

    Hikaru Namigata, Kanako Watanabe, Saya Okubo, Daisuke Nagao

    Colloids and Surfaces A: Physicochemical and Engineering Aspects　599　124782-124782　2020/08

    Publisher: Elsevier BV

    DOI： 10.1016/j.colsurfa.2020.124782 　

    ISSN： 0927-7757

  34. Three-dimensional periodic structures of gold nanoclusters in the interstices of sub-100 nm polymer particles toward surface-enhanced Raman scattering Peer-reviewed

    Ayumi Yahata, Haruyuki Ishii, Kosuke Nakamura, Kanako Watanabe, Daisuke Nagao

    Advanced Powder Technology　30　(12)　2957-2963　2019/12

    Publisher: Elsevier BV

    DOI： 10.1016/j.apt.2019.09.003 　

    ISSN： 0921-8831

  35. Magnetic Field Aligned Assembly of Nonmagnetic Composite Dumbbells in Nanoparticle-Based Aqueous Ferrofluid Peer-reviewed

    Hayato Takahashi, Daisuke Nagao, Kanako Watanabe, Haruyuki Ishii, Mikio Konno

    Langmuir　31　(20)　5590-5595　2015/05/26

    DOI： 10.1021/acs.langmuir.5b00737 　

    ISSN： 0743-7463

    eISSN： 1520-5827

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Books and Other Publications 2

  1. 高分子微粒子ハンドブック

    渡部花奈子, 長尾大輔

    株式会社シーエムシー出版　2017/07

  2. 中空粒子の研究開発動向と応用展開

    齋藤迅, 相澤花, 渡部花奈子

    株式会社シーエムシー出版

Presentations 39

  1. ポリマーを活用した機能性中空カプセルの合成 Invited

    〇 渡部花奈子

    先端高分子セミナー　2025/03/17

  2. ナノ・微粒子材料の局所集積化による新機能創成 Invited

    〇 渡部花奈子

    化学工学会第90年会　2025/03/14

  3. 触媒担体への応用に向けた中空多孔質シリカ粒子の構造制御 Invited

    相澤花, 〇 渡部花奈子

    化学工学会第90年会　2025/03/12

  4. Hollow-type particles: synthesis processes, functions, and promising applications Invited

    Kanako Watanabe

    2024/09/14

  5. Optical properties of Periodic structured core-shell type plasmonic particles

    Kanako Watanabe, Masashi Hasegawa, Tom A. J. Welling, Hikaru Namigata, Keishi Suga, Daisuke Nagao

    38th Conference of the European Colloid & Interface Society　2024/09/06

  6. Yolk-shell particles: a brief history of a long-distance collaboration

    Kanako Watanabe, Tom A.J. Welling

    25th Anniversary Symposium Soft Condensed Matter Group　2024/08/29

  7. 中空多孔質粒子内部のコロイド運動を利用した分子拡散モニタリング

    〇 渡部花奈子, Welling Tom, 波形光, 菅恵嗣, 長尾大輔

    化学工学会第54回秋季大会　2023/09/13

  8. Material Design with Hollow Particles Containing a Moving Colloid for Optical and Sensing Applications Invited

    Kanako Watanabe

    GP-Chem Kickoff Symposium　2023/09/07

  9. Probing ion-sieving by monitoring mobile colloids within hollow porous silica shells

    Kanako Watanabe, Tom A. J. Welling, Zahra Peimanifard, Daisuke Nagao, Alfons van Blaaderen

    11th International Colloids Conference　2022/06/13

  10. Development of new materials employing colloidal particles movable in hollow compartments Invited

    Kanako Watanabe

    The SCEJ 85th Annual Meeting　2020/03/15

  11. Colloidal stability of gold nanoparticle clusters encapsulated into hollow silica spheres International-presentation

    〇K. Watanabe, T. A. J. Welling, S. Sadighikia, H. Ishii, A. Imhof, M. A. van Huis, A. van Blaaderen, D. Nagao

    Okinawa Colloids 2019　2019/11/08

  12. Multipoint lock-and-key assembly of golf ball-like particles International-presentation

    〇K. Watanabe, Y. Tajima, T. Shimura, H. Ishii, D. Nagao

    European Colloid and Interface Society (ECIS2019)　2019/09/10

  13. 粒子形状認識による新たな粒子３次元集積プロセスの開発

    渡部花奈子, 田島優衣, 志村拓哉, 石井治之, 〇 長尾大輔

    第20回高分子ミクロスフェア討論会　2018/11/13

  14. Rattle-type colloidal crystals incorporating a movable silica/titania core developed for switchable materials International-presentation

    〇K. Watanabe, E. Tanaka, H. Ishii, D. Nagao

    32nd Conference of the European Colloid and Interface Society (ECIS)2018　2018/09/02

  15. 電場を用いた粒子空間分布の可逆的制御 Invited

    〇 渡部花奈子

    材料化学システム工学討論会　2018/08/29

  16. Motions of cores incorporated into a rattle particle under an external electric field International-presentation

    〇K. Watanabe, E. Tanaka, H. Ishii, M. Konno, D. Nagao

    16th Conference of the International Association of Colloid and Interface Scientists　2018/05/21

  17. Plasmonic properties of gold nanoparticles in their assembly under application of AC electric field International-presentation

    〇K. Watanabe, H. Ishii, D. Nagao

    2017MRS Fall Meeting & Exhibit　2017/11/26

  18. Characterization of 2D and 3D rattle-type colloidal crystals incorporating movable, electro-responsive cores for new optical devices International-presentation

    〇K. Watanabe, E. Tanaka, H. Ishii, M. Konno, D. Nagao

    10th World Congress of Chemical Engineering　2017/09/30

  19. Fabrication of Rattle-type particle assemblies incorporating movable cores for new devices International-presentation Invited

    〇K. Watanabe

    The 5th Dalian University of TechnoIogy-Tohoku University Joint Symposium on Chemistry　2017/09/25

  20. 高感度分子センサーへの応用に向けた金ナノ粒子集積システムの提案

    〇 渡部花奈子, 石井治之, 長尾大輔

    化学工学会第49回秋季大会　2017/09/20

  21. A new method for controlling the clustering of nanoparticles in their assembly International-presentation

    〇K. Watanabe, H. Ishii, D. Nagao

    UK Colloids 2017 : An International Colloids and Interface Science Symposium　2017/07/10

  22. Controls over motion and location of movable cores incorporated into yolk/shell colloidal crystal by external electric field International-presentation

    〇K. Watanabe, H. Ishii, M. Konno, D. Nagao

    12th Japan-Korea Symposium on Materials & Interfaces　2016/11/02

  23. ラトル型粒子配列体に内包した可動性コアの電場による運動制御

    〇 渡部花奈子, 石井治之, 今野幹男, 長尾大輔

    第65回高分子討論会　2016/09/14

  24. Electric-field-assisted location control over inner cores incorporated into rattle-type colloidal crystals International-presentation

    〇K. Watanabe, D. Nagao, H. Ishii, M. Konno

    6th International Colloids Conference　2016/06/19

  25. 非球形コアを内包した球形中空シリカ粒子の合成

    〇 渡部花奈子, 石井治之, 長尾大輔, 今野幹男

    第64回高分子討論　2015/09/15

  26. 電場応答性コア内包型中空粒子の構造制御に関する検討

    〇 渡部花奈子, 石井治之, 長尾大輔, 今野幹男

    化学工学会第47回秋季大会　2015/09/09

  27. Synthesis of submicron-sized yolk/shell particles for rattle-type colloidal crystals International-presentation

    〇K. Watanabe, D. Nagao, H. Ishii, M. Konno

    5th INTERNATIONAL COLLOIDS CONFERENCE　2015/06/21

  28. Synthesis of yolk/shell particles incorporating an oxide sphere for its position to be electrically controlled in the shell compartment International-presentation

    〇K. Watanabe, D. Nagao, H. Ishii, M. Konno

    11th Korea-Japan Symposium on Materials and Interfaces　2014/11/05

  29. 中空シリカ内に埋め込んだ可動性サブミクロン粒子の外場による配置制御

    〇 渡部花奈子, 石井治之, 長尾大輔, 今野幹男

    第63回高分子討論会　2014/09/24

  30. 電場応答性コア粒子内包型サブミクロンサイズYolk/shell粒子の合成

    〇 渡部花奈子, 石井治之, 長尾大輔, 今野幹男

    化学工学会第46回秋季大会　2014/09/17

  31. 化学を駆使した微粒子の形態制御 −感圧塗料への展開の可能性− Invited

    〇 渡部花奈子

    第19回学際領域における分子イメージングフォーラム　2023/12/22

  32. 触媒担体応用に適した中空シリカ粒子のシェル構造設計

    〇 相澤花, 波形光, 渡部花奈子, 菅恵嗣, 長尾大輔

    化学工学会山形大会2023　2023/08/09

  33. 電場により光の反射強度を制御可能な可動コア内包型粒子集積体の開発

    〇 波形光, 渡部花奈子, 菅恵嗣, 長尾大輔

    化学工学会第87年会　2022/03

  34. 電磁場シミュレーション結果に基づいた３次元プラズモニック構造体の作製

    〇 長谷川将史, 持明佳祐, 渡部花奈子, 菅恵嗣, 長尾大輔

    化学工学会第52回秋季大会　2021/09

  35. 動的な性質を有する3次元粒子配列体作製に向けたコア内包型中空粒子の設計

    〇 波形光, 渡部花奈子, 菅恵嗣, 長尾大輔

    化学工学会第51回秋季大会

  36. Far-field couplingの効果的な発現のための金属ナノ粒子空間配置デザイン

    〇 長谷川将史, 渡部花奈子, 菅恵嗣, 長尾大輔

    化学工学会第51回秋季大会

  37. Fabrication of non-close-packed colloidal crystals composed of hollow particles incorporating movable cores

    ○H. Namigata, K. Watanabe, E. Tanaka, D. Nagao

    2019 International Symposium on Chemical-Environmental-Biomedical Technology(isCEBT2019)　2019/12/15

  38. 微小空間での粒子配向制御に向けた金ナノロッド複合中空粒子の合成

    〇 黒田昂太郎, 渡部花奈子, 石井治之, 長尾大輔

    化学工学会第50回秋季大会　2018/09/18

  39. Light-driven motions of asymmetric dumbbells in H2O2 solution International-presentation

    N. Shigeta, 〇K. Watanabe, H. Ishii, D. Nagao

    32nd Conference of the European Colloid and Interface Society (ECIS)2018　2018/09/02

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Industrial Property Rights 2

  1. 光学素子、光学素子を用いたデバイスおよび光学素子の製造方法

    長尾大輔, 今野幹男, 渡部花奈子

    特許6706439

    Property Type: Patent

  2. コアシェル型多孔質シリカ粒子の製造方法

    長尾大輔, 渡部花奈子, 菅恵嗣, 藤沼隆斗

    Property Type: Patent

Research Projects 10

  1. A Challenge to Measurement of Low Reynolds Number Unsteady Aerodynamics Using Localized Plasmon Resonance

    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

    2025/04 - 2028/03

  2. 表面凹凸粒子間隙が創り出すナノ空間の工学利用：触媒充填層反応器への展開

    渡部 花奈子

    Offer Organization: 日本学術振興会

    System: 科学研究費助成事業

    Category: 若手研究

    Institution: 東北大学

    2024/04 - 2027/03

  3. A new circulation system for materials using a combination of particle assembly and redispersion depending on particle shapes

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research

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

    Institution: Tohoku University

    2023/06 - 2026/03

  4. 次世代エネルギーの高効率フロー製造に向けた微粒子触媒の開発

    Offer Organization: 公益財団法人東燃ゼネラル石油奨学会

    System: 第４４回（２０２４年度） ＥＮＥＯＳ東燃ゼネラル研究奨励・奨学会 研究助成

    2025/04 -

  5. Electric field-assisted nanocatalysis within a hollow compartment

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research

    Category: Grant-in-Aid for Early-Career Scientists

    Institution: Tohoku University

    2021/04 - 2024/03

  6. マイクロ流路内での物質拡散を促進する運動性触媒材料の開発

    System: 豊田理研スカラー

    Institution: 公益財団法人 豊田理化学研究所

    2022/04 - 2023/03

  7. Motion of metal nanoparticles within a hollow compartment under an external AC electric field studied with liquid cell electron microscopy

    Offer Organization: Utrecht University

    System: Starting PI fund

    2021/07 - 2022/07

  8. ロレアル ユネスコ女性科学者日本奨励賞 奨励金

    Offer Organization: 日本ロレアル株式会社

    System: ロレアル ユネスコ女性科学者日本奨励賞 奨励金

    2019/05 -

  9. ナノ粒子の空間分布制御を実現する新規粒子配列体の創成

    渡部 花奈子

    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: 東北大学

    2016/04/22 - 2019/03/31

    More details Close

    金属ナノ粒子は、特異的な光学特性やセンシング特性を有することが知られている。これらの特性を制御、向上させるためにはナノ粒子同士を集める（集積化させる）ことが重要である。一方で、ナノ粒子は一般的に液中で不安定であり、溶液pHや温度変化など、周囲環境のわずかな変化にも耐えきれず凝集してしまう。以上の背景から、ナノ粒子の集積化と凝集のジレンマを解決する方法の開発が求められている。そこで本研究では、中空粒子構造を利用し、凝集しやすい金ナノ粒子の空間分布を電場印加により可逆的に制御することを目的とした。 まず複数個からなる金ナノ粒子のクラスターを格納した中空シリカ粒子合成し、光学特性評価を行ったところ、内包金ナノ粒子個数の増大に伴い粒子分散水溶液の吸収スペクトルは長波長側にシフトした。次に、同粒子のセンシング特性をラマンスペクトル測定により評価した。複数の金ナノ粒子を内包した中空粒子からは、単一の金ナノ粒子を内包した中空粒子と比較して55倍程度高いラマンスペクトル強度が検出された。 得られた金ナノクラスター内包型中空粒子を分散させた水溶液に対して交流電場を印加した。電場印加により同粒子が局所的に集まり、効率的にナノ粒子の特性を引き出せることがわかった。検出物質のラマンスペクトルを測定したところ、電場印加後には印加前と比べてラマンスペクトル強度が増強された。同粒子の集積⇔分散状態は電場のON/OFFの切り替えにより可逆的に制御可能であることも確認した。液中分散安定性の高い中空シリカ粒子は、電場等の外的な刺激を受け粒子同士が接近しても、電場を解除することで再度分散状態に戻ることができる。これにより、凝集しやすい金ナノクラスターの液中分散性が保たれ、可逆的な粒子空間分布の制御が実現した。

  10. ナノ空間に閉じ込めたコロイド粒子の運動解析 －外部電場による粒子運動制御に向けて－

    Offer Organization: 独立行政法人日本学術振興会

    System: 海外特別研究員 研究奨励費

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Teaching Experience 3

  1. 創造工学研修　東北大学

  2. 化学・バイオ系 化学工学系演習　東北大学工学部化学・バイオ工学科

  3. 化学・バイオ学生実験　東北大学工学部

Social Activities 3

  1. 内閣府事業 若手理工系人材による出前授業

    2024/11/16 -

  2. 東北大学化学・バイオ系 高校生向けWeb講義シリーズⅤ

    2024/08/05 -

  3. 名取が丘公民館「わくわく体験講座」の講師

    2023/08/18 -

Media Coverage 2

  1. Tohoku University "Driving force"

    https://www.eng.tohoku.ac.jp/driving_force/vol35.html

    2024

  2. 「25歳～情熱の起源～」への出演 Myself

    テレビ朝日　25歳～情熱の起源～

    2021/04

    Type: TV or radio program