Details of the Researcher

PHOTO

Takehiro Yachi
Section
Institute of Multidisciplinary Research for Advanced Materials
Job title
Assistant Professor
Degree

  • Doctor of Philosophy (Tohoku University)

e-Rad No.
60991651

Research History 2

  • 2025/05 - Present
    Tohoku University　Institute of Multidisciplinary Research for Advanced Materials　Assistant Professor

  • 2023/04 - 2025/04
    Hokkaido University　Research Institute for Electronic Science　JSPS Postdoctoral Research Fellowships

Education 3

  • Tohoku University　Graduate School of Environmental Studies

    2020/04 - 2023/03

  • Tohoku University　Graduate School of Environmental Studies

    2018/04 - 2020/03

  • National Institute of Technology, Fukushima College

    2016/04 - 2018/03

Awards 5

  1. 若手口頭講演賞

    2025/09　第76回コロイドおよび界面化学討論会

  2. 籏野奨学基金 第20回多元物質科学研究奨励賞

    2025/09　東北大学 多元物質科学研究所

  3. APT2021 Excellent Poster Award

    2021/10　APT2021

  4. オンライン学生講演賞

    2020/09　第71回コロイドおよび界面化学討論会

  5. 口頭発表優秀賞

    2017/12　第8回福島地区CEセミナー

Papers 8

  1. Controlled Assembly of Gold Nanodiscs via DNA Hybridization: Tuning Plasmonic Coupling via Interparticle Gap Distance and Multimerization Degree Peer-reviewed

    Melda Taspika, Takehiro Yachi, Xu Shi, Daisuke Unabara, Tasuku Hamaguchi, Koji Yonekura, Yusuke Yonamine, Hideyuki Mitomo, Kuniharu Ijiro

    Langmuir　2025/10/17

    Publisher: American Chemical Society (ACS)

    DOI： 10.1021/acs.langmuir.5c04270 　

    ISSN： 0743-7463

    eISSN： 1520-5827

  2. Control of Magnetic Properties of Liquid-Crystalline Dendron-Modified FePt Nanoparticles through Thermal Phase Transition for Tunable Magnetic Materials Peer-reviewed

    Takehiro Yachi, Rina Sato, Masaki Matsubara, Chen Shen, Rie Umetsu, Xiangbing Zeng, Goran Ungar, Atsushi Muramatsu, Kiyoshi Kanie

    ACS Applied Nano Materials　2025/08/08

    DOI： 10.1021/acsanm.5c02325 　

  3. Versatile Nanoparticle Capsule Formation With Enhanced Encapsulation Efficiency via Solute-Induced Liquid-Liquid Phase Separation. International-journal Peer-reviewed

    Takehiro Yachi, Honoka Watanabe, Rumi Niwa, Daisuke Unabara, Tasuku Hamaguchi, Yusuke Yonamine, Koji Yonekura, Kuniharu Ijiro, Hideyuki Mitomo

    Small　2025/05/07

    DOI： 10.1002/smll.202502573 　

    More details Close

    Nanoparticle capsules (NCs), capsule-like structures composed of inorganic nanoparticles (NPs), hold great potential for diverse applications due to their structure-driven functionality and the unique properties of the NPs. Despite advancements in NC formation methods, achieving both stable formation and efficient material encapsulation remains challenging. In this study, a simple and versatile method is developed for the formation of inorganic NCs. Inorganic NCs are formed from oligo(ethylene glycol) (OEG)-modified inorganic NPs via self-assembly at solute-induced liquid-liquid interfaces. First, Au NCs are formed from OEG-Au NPs. Their formation is confirmed by scanning transmission electron microscopic (STEM) and cryo-electron tomographic (ET) observations. The resulting Au NCs exhibited high stability, uniform size, and precise tunability under various conditions. The method is further extended to magnetic Fe3O4 NPs, affording size-controlled magnetic NCs, demonstrating broad applicability. Moreover, this approach enables the efficient encapsulation of various materials, including citrate-capped Au NPs and DNA molecules, into inorganic NCs, affording >2000-fold enrichment. This method paves the way for innovative application of inorganic NCs in drug delivery, nanoreactors, and beyond.

  4. Alternating Binary Multilayers of Alkanethiol-Modified Gold Nanoparticles and Quantum Dots with Artificial Three-Dimensional Structures and Rational Photoluminescence. International-journal Peer-reviewed

    Rina Sato, Hideyuki Mitomo, Yuto Kajino, Masaki Matsubara, Takehiro Yachi, Megumi Suyama, Kaoru Tamada, Kiyoshi Kanie

    ACS applied materials & interfaces　2025/05/02

    DOI： 10.1021/acsami.5c02956 　

    ISSN： 1944-8244 1944-8252

    More details Close

    The formation of periodic arrangements of two types of nanoparticles (NPs), i.e., binary NP superlattices (BNSLs), provides a versatile approach to control their physical properties through interparticle interactions. However, achieving highly ordered BNSLs is still challenging because of the difficulty of combining two distinct NPs without phase segregation. In this work, plasmonic Au NPs and CdS quantum dots (QDs) modified with dodecanethiol ligands were assembled into binary multilayered structures by alternately laminating their monolayers onto a single substrate. Grazing-incidence small-angle X-ray scattering analysis confirmed the long-range ordered arrangement of the NPs, demonstrating the successful fabrication of 3D structures with Au NPs and CdS QDs. The formation of close-packed monolayers and entropic stabilization by surface ligands were identified as key factors in artificially constructing such 3D arrays via multilayering. The formation of defect-free BNSLs was also optically identified by a systematic increase in the intensities of the photoluminescence (PL) and plasmon extinction intensities, as well as perfect control of respective band positions. Based on finite-difference time-domain simulations, this PL behavior was attributed to the formation of a layered superstructure with a homogeneous dielectric function in the repeat unit of a Au NP-CdS QD-Au NP layer. This work demonstrates that simple alternative lamination of NP monolayers offers a facile yet effective strategy to obtain BNSLs with well-defined physical properties for broader application of NP array-based materials.

  5. Ultrasensitive Surface-Enhanced Raman Scattering Platform for Protein Detection via Active Delivery to Nanogaps as a Hotspot Peer-reviewed

    Tianxu Gao, Takehiro Yachi, Xu Shi, Rina Sato, Chikara Sato, Yusuke Yonamine, Kiyoshi Kanie, Hiroaki Misawa, Kuniharu Ijiro, Hideyuki Mitomo

    ACS Nano　2024/08/02

    Publisher: American Chemical Society (ACS)

    DOI： 10.1021/acsnano.4c09578 　

    ISSN： 1936-0851

    eISSN： 1936-086X

  6. Water-Dispersible Fe3O4 Nanoparticles Modified with Controlled Numbers of Carboxyl Moieties for Magnetic Induction Heating Peer-reviewed

    Takehiro Yachi, Masaki Matsubara, Chen Shen, Shunya Asami, Nathalie B. Milbrandt, Minseon Ju, Sameera Wickramasinghe, Anna Cristina S. Samia, Atsushi Muramatsu, Kiyoshi Kanie

    ACS APPLIED NANO MATERIALS　4　(7)　7395-7403　2021/07

    DOI： 10.1021/acsanm.1c01370 　

    eISSN： 2574-0970

  7. Application of Novel Sialoglyco Particulates Enhances the Detection Sensitivity of the Equine Influenza Virus by Real-Time Reverse Transcriptase Polymerase Chain Reaction Peer-reviewed

    Makoto Ogata, Takashi Yamanaka, Ami Koizumi, Mao Sakamoto, Rena Aita, Hiroyuki Endo, Takehiro Yachi, Noriko Yamauchi, Tadamune Otsubo, Kiyoshi Ikeda, Tatsuya Kato, Enoch Y. Park, Hiroyuki Kono, Manabu Nemoto, Kazuya I. P. J. Hidari

    ACS APPLIED BIO MATERIALS　2　(3)　1255-1261　2019/03

    DOI： 10.1021/acsabm.8b00813 　

    ISSN： 2576-6422

  8. One-pot spontaneous formation of submicron hexane-dispersible silica particles with the aid of amphiphilic reaction solvent Peer-reviewed

    Noriko Yamauchi, Takehiro Yachi, Kenichi Kurumada

    COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS　553　253-258　2018/09

    DOI： 10.1016/j.colsurfa.2018.05.053 　

    ISSN： 0927-7757

    eISSN： 1873-4359

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Misc. 1

  1. 無機ナノ粒子からなる自己組織カプセル構造の形成および効率的物質内包技術 Invited

    谷地赳拓

    Colloid & Interface Communications　52　(2)　30-32　2026/05

    DOI： 10.57534/cicommun.51.2_30 　

Presentations 19

  1. Self-Assembly of OEG-Modified Inorganic Nanoparticles at Solute-Induced Liquid–Liquid Interfaces: Stable Capsule Formation and Efficient Material Encapsulation

    Takehiro Yachi, Kiyoshi Kanie, Kuniharu Ijiro, Hyideyuki Mitomo

    2025 MRS Fall Meeting & Exhibit　2025/12/02

  2. オリゴチオフェンデンドロン修飾金ナノ粒子の光学特性評価および自己組織構造形成

    吉田朱里, 松原正樹, 陶山めぐみ, 谷地赳拓, 阪上雄真, 野田直希, 岡野健太郎, 森敦紀, 蟹江澄志

    第76回コロイドおよび界面化学討論会　2025/09/22

  3. Ho2O3ナノ粒子のソルボサーマル合成およびミストデポジション法による透明磁性薄膜の作製

    徳武 龍樹, 陶山 めぐみ, 谷地 赳拓, 松原 正樹, 蟹江 澄志

    第76回コロイドおよび界面化学討論会　2025/09/22

  4. 無機ナノ粒子の自己組織化に基づく中空カプセル構造形成技術

    谷地赳拓, 蟹江澄志, 三友秀之, 居城邦治

    第76回コロイドおよび界面化学討論会　2025/09/24

  5. Formation of the alternating binary multilayer with alkanethiol-modified Au nanoparticles and CdS quantum dots

    Rina Sato, Masaki Matsubara, Megumi Suyama, Takehiro Yachi, Hideyuki Mitomo, Yuto Kajino, Kaoru Tamada, Kiyoshi Kanie

    99th ACS Colloids & Surface Science Symp & 18th IACIS Conference　2025/06/23

  6. Photoluminescence Property in Multilayered Superlattice with Alkanethiolmodified Au Nanoparticles and CdS Quantum Dots

    Rina Sato, Masaki Matsubara, Megumi Suyama, Takehiro Yachi, Hideyuki Mitomo, Yuto Kajino, Kaoru Tamada, Kiyoshi Kanie

    The 11th International Conference on Surface Plasmon Photonics　2025/05/20

  7. オリゴエチレングリコール修飾ナノ粒子の自己組織化によるナノ粒子カプセル形成とその内部への物質の濃縮内包

    谷地赳拓, 渡邊ほのか, 三友秀之, 居城邦治

    日本化学会第105春季年会　2025/03/26

  8. Liquid-Crystalline Dendron-Modified Iron Oxide Magnetic Nanoparticles: Dynamic Control of Array Structure by Thermal Phase Transition

    Takehiro Yachi, Masaki Matsubara, Xiangbing Zeng, Goran Ungar, Atsushi Muramatsu, Kiyoshi Kanie

    IPC2023　2023/07/20

  9. 液晶性デンドロン修飾磁性ナノ粒子の自己組織化および熱相転移による粒子配列動的制御

    谷地赳拓, 松原正樹, Xiangbing Zeng, Goran Ungar, 村松淳司, 蟹江澄志

    ナノ学会第21回大会　2023/05/11

  10. Liquid-crystalline dendron-modified iron oxide nanoparticles with thermal-responsive array

    Takehiro Yachi, Masaki Matsubara, Xiangbing Zeng, Goran Ungar, Atsushi Muramatsu, Kiyoshi Kanie

    ACS FALL 2022　2022/08/24

  11. Liquid-Crystalline Organic-Inorganic Hybrid Dendron-Modified Fe3O4 Nanoparticles: Characterization of the Self-organized Structure

    Takehiro Yachi, Masaki Matsubara, Xiangbing Zeng, Goran Ungar, Atsushi Muramatsu, Kiyoshi Kanie

    2022/03/23

  12. Liquid-Crystalline Dendron-Modified Iron Oxide Nanoparticles with Thermal Structural Transition

    Takehiro Yachi, Masaki Matsubara, Atsushi Muramatsu, Kiyoshi Kanie

    The 5th A3 Foresight Symposium on Organic/Inorganic Nanohybrid Platforms for Precision Tumor Imaging and Therapy　2021/10/14

  13. 液晶性デンドロン修飾Fe3O4ナノ粒子の自己組織化による粒子配列制御

    谷地 赳拓, 松原 正樹, 村松 淳司, 蟹江 澄志

    第72回コロイドおよび界面化学討論会　2021/09/15

  14. Dynamic Control of Fe3O4 Nanoparticles-Based Array Structure by Modification with Liquid Crystalline Dendron

    Takehiro Yachi, Masaki Matsubara, Atsushi Muramatsu, Kiyoshi Kanie

    ECIS2021　2021/09/08

  15. Self-organization of organic-inorganic hybrid dendrimer with a magnetic Fe3O4 nanocore

    Takehiro Yachi, Masaki Matsubara, Atsushi Muramatsu, Kiyoshi Kanie

    2021/03/21

  16. 液晶性デンドロン修飾Fe3O4ナノ粒子の合成と自己組織配列評価

    谷地 赳拓, 松原 正樹, 村松 淳司, 蟹江 澄志

    第71回コロイドおよび界面化学討論会　2020/09/14

  17. Self-alignment Structure Control of Fe3O4 Magnetic Nanoparticles by Surface Modification with Liquid-Crystalline Dendron

    2020/03/22

  18. 液晶性デンドロン修飾Fe3O4ナノ粒子の合成および自己組織構造評価

    谷地 赳拓, 松原 正樹, 村松 淳司, 蟹江 澄志

    2020年日本液晶学会オンライン研究発表会　2020/10/29

  19. 非極性溶媒中に分散可能な疎水性シリカ粒子の両親媒性アミン中での一段階形成

    谷地赳拓, 山内紀子, 車田研一

    第8回福島地区CEセミナー　2017/12/16

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Research Projects 4

  1. 令和８年度多元研プロジェクト

    Offer Organization: 多元物質科学研究所

    2026/06 - 2027/03

  2. ナノ粒子からなるYolk/Shell構造の自在構築

    Offer Organization: ホソカワ粉体工学振興財団

    System: 研究助成

    2026/04 - 2027/03

  3. 液晶配向に基づく基板上での金ナノロッド自在配列制御技術の開発と機能性材料への展開

    谷地 赳拓

    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: 北海道大学

    2023/04/25 - 2026/03/31

  4. 磁性ナノ粒子の規則配列制御に基づく 機能性磁気材料のボトムアップ型創製技術の開発

    谷地赳拓

    System: 東北大学高等大学院博士後期課程学生挑戦的研究支援プロジェクト

    2021/10 - 2023/03