Taguchi, Yoshihiro

写真a

Affiliation

Faculty of Science and Technology, Department of System Design Engineering （Yagami）

Position

Professor

Related Websites
Page Top ▲
 

Books 【 Display / hide 】

  • ナノ・マイクロスケール熱物性ハンドブック

    長坂雄次, 斎木敏治, 田口良広　他, 養賢堂, 2014

Page Top ▲

Papers 【 Display / hide 】

  • Additive manufacturing method of electrothermal 4D bimorph microactuator

    Masaaki Hashimoto, Takaya Sato, Yoshihiro Taguchi,

    Sensors and Actuators: A. Physical  356 （ 114348 ）  2023.06

    Research paper (scientific journal), Joint Work, Last author, Corresponding author, Accepted

    　View Summary

    This paper presents an additive manufacturing method of an electrothermally controllable 4D-printed bimorph microactuator. We fabricated an electrothermal 4D bimorph microactuator equipped with an electrical heater through a two-step additive process: two-photon polymerization (TPP) 4D printing and liquid metal microfluidic injection. First, a 3D thermal bimorph microstructure including a microchannel was built using TPP printing. Second, the printed microstructure was electrically wired by injecting a liquid metal into the microchannel. To validate this method, we fabricated and characterized a vertical-spiral-shaped electrothermal 4D rotary microactuator with a large angular displacement. The fabricated electrothermal microactuator successfully controlled its temperature and angular displacement via electricity. Furthermore, we experimentally demonstrated the unique ability of the electrothermal 4D bimorph microactuator to produce repeatable large angular displacements of more than 10° at 386 mV. Accordingly, the proposed method is expected to enhance the spatial design freedom of electrothermal microactuators with potential applications in soft microrobotics.

  • Development of a Millimeter-Stroke Electrothermal Kirigami MEMS Actuator with Low Driving Power -Static and Dynamic Thermomechanical Characteristic of Film Bimorph-

    Masaaki Hashimoto, Yoshihiro Taguchi

    Netsu Bussei 34 （ 4 ） 109 - 116 2020.07

    Research paper (scientific journal), Joint Work, Last author, Corresponding author, Accepted

  • Circular pyramidal kirigami microscanner with millimeter-range low-power lens drive

    Hashimoto M., Taguchi Y.

    Optics Express （Optics Express)  28 （ 12 ） 17457 - 17467 2020.06

    　View Summary

    © 2020 Optical Society of America under. This paper proposes an electrothermally-actuated circular pyramidal kirigami microscanner with a millimeter-range low-power lens drive for endoscopic biomedical applications. A variation of Japanese origami art, kirigami involves creation of out-of-plane structures by paper cutting and folding. The proposed microscanner is composed of freestanding kirigami film on which the spiral-curved thermal bimorphs are strategically placed. The kirigami microscanner is electrothermally transformed into an out-of-plane circular multistep pyramid by Joule heating. The circular pyramidal kirigami microscanner on a small footprint of 4.5 mm 4.5 mm was fabricated by microelectromechanical system processes. A large four-step pyramidal actuation was successfully demonstrated, and a large 1.1-mm lens travel range at only 128 mW was achieved.

  • Design and fabrication of a kirigami-inspired electrothermal MEMS scanner with large displacement

    Hashimoto M., Taguchi Y.

    Micromachines （Micromachines)  11 （ 4 ）  2020.04

    　View Summary

    © 2020 by the authors. Large-displacement microelectromechanical system (MEMS) scanners are in high demand for a wide variety of optical applications. Kirigami, a traditional Japanese art of paper cutting and folding, is a promising engineering method for creating out-of-plane structures. This paper explores the feasibility and potential of a kirigami-inspired electrothermal MEMS scanner, which achieves large vertical displacement by out-of-plane film actuation. The proposed scanner is composed of film materials suitable for electrothermal self-reconfigurable folding and unfolding, and microscale film cuttings are strategically placed to generate large displacement. The freestanding electrothermal kirigami film with a 2 mm diameter and high fill factor is completely fabricated by careful stress control in the MEMS process. A 200 μm vertical displacement with 131 mW and a 20 Hz responsive frequency is experimentally demonstrated as a unique function of electrothermal kirigami film. The proposed design, fabrication process, and experimental test validate the proposed scanner's feasibility and potential for large-displacement scanning with a high fill factor.

  • Development of a robust autofluorescence lifetime sensing method for use in an endoscopic application

    Ito S., Hashimoto M., Taguchi Y.

    Sensors (Switzerland) （Sensors (Switzerland))  20 （ 7 ）  2020.04

    ISSN  14248220

    　View Summary

    © 2020 by the authors. Licensee MDPI, Basel, Switzerland. Endoscopic autofluorescence lifetime imaging is a promising technique for making quantitative and non-invasive diagnoses of abnormal tissue. However, motion artifacts caused by vibration in the direction perpendicular to the tissue surface in a body makes clinical diagnosis difficult. Thus, this paper proposes a robust autofluorescence lifetime sensing technique with a lens tracking system based on a laser beam spot analysis. Our optical setup can be easily mounted on the head of an endoscope. The variation in distance between the optical system and the target surface is tracked by the change in the spot size of the laser beam captured by the camera, and the lens actuator is feedback-controlled to suppress motion artifacts. The experimental results show that, when using a lens tracking system, the standard deviation of fluorescence lifetime is dramatically reduced. Furthermore, the validity of the proposed method is experimentally confirmed by using a bio-mimicking phantom that replicates the shape, optical parameters, and chemical component distribution of the cancerous tissue.

display all >>

Page Top ▲

Papers, etc., Registered in KOARA 【 Display / hide 】

display all >>

Page Top ▲

Presentations 【 Display / hide 】

  • Development of a clinical diagnostic device for non-contact in-situ measurement of tear viscosity

    Taketo Onishi, Yoshihiro Taguchi

    ECPT2023 – 22nd European Conference on Thermophysical Properties September 10-13, 2023 (ベニス) , 

    2023.09
    , 

    Oral presentation (general)

  • Evaluation of Effective Emissivity and Radiowave Transmissivityof Radiowave Transmissive MLI

    君島大生,太刀川純孝,田口良広

    第65回宇宙科学技術連合講演会 (オンライン開催) , 

    2021.11
    , 

    Oral presentation (general), 一般社団法人　日本航空宇宙学会

  • RESEARCHONTHERMALCONDUCTIVITYOFSEMICLATHRATEHYDRATEBYTRANSIENTHOT-WIREMETHOD―EXAMINATIONOFCRYSTALOBSERVATIONANDTHERMALCONDUCTIVITYMEASUREMENTOFTBA+-CLASSHYDRATE―

    佐藤雅志,岩井貴之,田口良広

    第42回日本熱物性シンポジウム (オンライン開催) , 

    2021.10
    , 

    Oral presentation (general), 日本熱物性学会

  • DEVELOPMENTOFHIGHLYSENSITIVEPOLARIZEDNEAR-FIELDOPTICSTHERMALMICROSCOPY―EVALUATIONOFPOLARIZATIONOFULTRASHORTPULSEDLIGHTANDEXAMINATIONOF HIGH-SENSITIVITY PARAMETERS―

    佐久間実咲,宮本碧,百上徹,田口良広

    第42回日本熱物性シンポジウム (オンライン開催) , 

    2021.10
    , 

    Oral presentation (general), 日本熱物性学会

  • 電波透過型赤外反射材の性能向上に関する研究－広帯域化を目指した誘電体多層膜の設計と評価－

    君島大生,太刀川純孝,田口良広

    第42回日本熱物性シンポジウム (オンライン開催) , 

    2021.10
    , 

    Oral presentation (general), 日本熱物性学会

display all >>

Page Top ▲

Research Projects of Competitive Funds, etc. 【 Display / hide 】

  • 極微量液滴内の分離・濃縮・混合・分析を実現する樹脂製マイクロ熱流体デバイスの創製

    2022.04
    -
    2025.03

    MEXT,JSPS, Grant-in-Aid for Scientific Research, 基盤研究(B), Principal investigator

  • モノリシック光電子ピンセットの創成とオンチップ分離濃縮・拡散センシングの実現

    2018.04
    -
    2022.03

    MEXT,JSPS, Grant-in-Aid for Scientific Research, Grant-in-Aid for Scientific Research (B), Principal investigator

  • Nanoscale Optical Thermometry using Near-field Optics for Thermal Control of Nanodevices

    2015.04
    -
    2018.03

    MEXT,JSPS, Grant-in-Aid for Scientific Research, Grant-in-Aid for Scientific Research (B), Principal investigator

  • Development of micro diffusion sensor using optical MEMS

    2015.04
    -
    2017.03

    MEXT,JSPS, Grant-in-Aid for Scientific Research, Grant-in-Aid for Challenging Exploratory Research, Principal investigator

    　View Summary

    The diffusion coefficients of biological molecules, such as proteins, reflect their size, molecular structure, conformational changes, and inter-molecular interactions. Therefore, how the diffusion coefficient of biological samples changes in liquid solution is essential knowledge for clinical diagnosis and drug discovery. In this study, novel techniques such as (1) the simple fabrication technique of hydrogenated amorphous silicon, (2) the optical sorting technique for the high sensitive measurement, and (3) the new channel structure applicable for the biological sample, have been developed.

  • 超高感度近接場光学熱顕微鏡による細胞表面蛋白質のナノスケール直接観察と構造制御

    2013

    Keio Gijuku Academic Development Funds, Commissioned ｒesearch, No Setting

display all >>

Page Top ▲

Intellectual Property Rights, etc. 【 Display / hide 】

  • 流量測定装置、流量測定方法および流量測定プログラム

    Date applied： 2016-24530   

    Patent, Joint

Page Top ▲

Awards 【 Display / hide 】

  • 日本機械学会熱工学部門講演論文表彰

    鎌田慎, 山田幹, 田口良広, 長坂雄次, 2018.10, 日本機械学会熱工学部門, Development of Micro Fluidic System for High-speed Diffusion Measurement

  • 日本学術振興会科学研究費補助金審査員表彰

    2017.09, 日本学術振興会

  • Young Scientist Awarrd

    2016.10, Asian Thermophysical Properties Research

    Type of Award： International academic award (Japan or overseas)

    　View Description

    The 11th Asian Thermophysical Properties Conference

  • 文部科学大臣表彰　若手科学者賞

    TAGUCHI Yoshihiro, 2012.04, 文部科学省, レーザーを用いた超高時空間分解熱物性センシング技術の研究

  • 日本伝熱学会奨励賞

    TAGUCHI Yoshihiro, 2011.06, 社団法人日本伝熱学会, 位相分解蛍光寿命測定法と近接場顕微技術を用いたナノスケール温度測定法の開発

display all >>

Page Top ▲
 

Courses Taught 【 Display / hide 】

  • THERMOFLUID DYNAMICS 1

    2023

  • SEMINAR IN SYSTEM DESIGN ENGINEERING

    2023

  • OPTICS SYSTEM

    2023

  • MICRODEVICE SYSTEM DESIGN

    2023

  • LABORATORIES IN SYSTEM DESIGN ENGINEERING 1)

    2023

display all >>

Page Top ▲
 

Social Activities 【 Display / hide 】

  • 文部科学省科学技術政策研究所

    2013
    -
    Present

  • 4大学ナノ・マイクロファブリケーションコンソーシアム

    2011
    -
    Present

  • 4大学ナノ・マイクロファブリケーションコンソーシアム

    2010
Page Top ▲

Memberships in Academic Societies 【 Display / hide 】

  • 日本機械学会, 

    2013
    -
    Present

  • （公社）日本伝熱学会, 

    2012
    -
    Present

  • 2012 International Conference on Solid State Devices and Materials, 

    2012
    -
    Present

  • ㈳日本伝熱学会, 

    2011
    -
    Present

  • ㈳日本伝熱学会, 

    2011
    -
    Present

display all >>

Page Top ▲

Committee Experiences 【 Display / hide 】

  • 2013
    -
    Present

    専門調査員, 文部科学省科学技術政策研究所

  • 2013
    -
    Present

    熱工学部門運営委員, 日本機械学会

  • 2013

    論文委員, 2013 International Conference on Solid State Devices and Materials

  • 2012
    -
    Present

    協議員, （公社）日本伝熱学会

  • 2012

    論文委員, 2012 International Conference on Solid State Devices and Materials

display all >>

Page Top ▲