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Affiliation |
Graduate School of Engineering Science Department of Mathematical Science and Electrical-Electronic-Computer Engineering Electrical and Electronic Engineering Course |
YAMAGUCHI Rumiko
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Research Interests 【 display / non-display 】
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Optoelecrtronics
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Liquid crystal devices
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liquid crystal
Graduating School 【 display / non-display 】
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1980.04-1984.03
Akita University Graduated
Campus Career 【 display / non-display 】
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2022.04-Now
Akita University Graduate School of Engineering Science Department of Mathematical Science and Electrical-Electronic-Computer Engineering Electrical and Electronic Engineering Course Professor
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2019.04-2022.03
Akita University Graduate School of Engineering Science Cooperative Major in Life Cycle Design Engineering Professor
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2005.12-2019.03
Akita University Graduate School of Engineering Science, Associate Professor
Academic Society Affiliations 【 display / non-display 】
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2012.04-Now
United States
the Society for Information DIsplay
Research Areas 【 display / non-display 】
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Nanotechnology/Materials / Optical engineering and photon science
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Manufacturing Technology (Mechanical Engineering, Electrical and Electronic Engineering, Chemical Engineering) / Electric and electronic materials
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Manufacturing Technology (Mechanical Engineering, Electrical and Electronic Engineering, Chemical Engineering) / Electron device and electronic equipment
Research Achievements 【 display / non-display 】
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Junki Yokota, Miho Aizawa, Kyohei Hisano, Shoichi Kubo, Rumiko Yamaguchi, Atsushi Shishido
Society of Photo-Optical Instrumentation Engineers 12658 1265805 2023.08 [Refereed]
Research paper (journal) Domestic Co-author
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Rumiko Yamaguchi
Optical Materials Express 13 ( 8 ) 2147 2023.07 [Refereed] [Invited]
Research paper (journal) Single author
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Electro-Optical Characteristics of Quasi-Homogeneous Cell in Twisted Nematic Mode
Yamaguchi Rumiko, Sakamoto Yoshiki
Symmetry ( Multidisciplinary Digital Publishing Institute ) 15 ( 3 ) 597 2023.02 [Refereed]
Research paper (journal) Domestic Co-author
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Special Section on Electronic Displays
Kanbara Masayuki, Mizusaki, Masanobu, Yamaguchi Rumiko 他
IEICE Transactions on Electronics E106C ( 2 ) 20 2023.02
Research paper (journal) Domestic Co-author
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Analysis of Electro-Optical Behavior in Liquid Crystal Cells with Asymmetric Anchoring Strength
Rumiko Yamaguchi
Symmetry 14 ( 1 ) 85-1 - 85-8 2022.01 [Refereed]
Research paper (journal) Single author
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Liquid crystal devices application utilizing alignment phenomena on polymer interfaces
Rumiko Yamaguchi
30 ( 1 ) 1 - 12 2026.01
Introduction and explanation (scientific journal) Single author
Due to their fluidity, liquid crystals need to be confined within a certain space when applied to devices. The orientation state of liquid crystals, which determines their crystalline optical properties, is strongly influenced by the interface. In this report, various orientation phenomena at the interface between liquid crystals and polymers which serve as confining materials are described. Two-dimensional interfacial structures are defined as alignment films, whereas three-dimensional structures are characterized as polymer-dispersed liquid crystals. Devices that utilize various types of liquid crystal orientation at these interfaces are presented.
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Special Section on Electronic Displays
Yamaguchi, Rumiko
IEICE Transactions on Electron . ( 電子情報通信学会 ) E105.C ( 2 ) 51 - 51 2022.02
Introduction and explanation (scientific journal) Single author
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Foreword: Special section on electronic displays
Yamaguchi, Rumiko
IEICE Transactions on Electron . ( 電子情報通信学会 ) 104 ( 2 ) ４４ - ４４ 2021.02
Introduction and explanation (scientific journal) Single author
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23 ( 234 ) 182 - 187 2019.09
Introduction and explanation (scientific journal) Domestic Co-author
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Physical Properties of Hydrogen-Bonded Liquid Crystal with Fluorinated Benzoic Acids
Rumiko Yamaguchi, Koki Sawataishi, Dan Jian
Proceedings of The International Display Workshops 30 458 - 459 2023.12 [Refereed]
Research paper (international conference proceedings) Domestic Co-author
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Proposal of Ultra-thin AR Wearable Display Film Using Liquid Crystal Waveguide
Takao Tomono, Rumiko Yamaguchi
Proceedings of The International Display Workshops 29 297 - 300 2022.12 [Refereed]
Research paper (international conference proceedings) Domestic Co-author
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Yamaguchi R.,Kawata, S.
Proceedings of the International Display Workshops ( Proceedings of the International Display Workshops ) 27 131 - 132 2021.12 [Refereed] [Invited]
Research paper (international conference proceedings) Domestic Co-author
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Thresholdless and Ultra-Low Drive Voltage in Liquid Crystals with Weak Anchoring Boundaries
Rumiko Yamaguchi
Optics & Photonics Taiwan International Conference 2019.12 [Invited]
Research paper (international conference proceedings) Single author
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Light scattering of ordinary ray in reverse mode LC cell assisted by micro lens effect
Sagawa K.,Yamaguchi R.,Yanase S.
Proceedings of the International Display Workshops ( Proceedings of the International Display Workshops ) 1 368 - 369 2019.11 [Refereed]
Research paper (international conference proceedings) Domestic Co-author
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( DEI-22-068-083.085 ) 81 - 84 2022.07
Summary of the papers read (national conference and other science council) Domestic Co-author
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Special Section on Electronic Displays
Rumiko Yamaguchi
IEICE TRANSACTIONS ON ELECTRONICS ( IEICE-INST ELECTRONICS INFORMATION COMMUNICATION ENGINEERS ) E105C ( 2 ) 51 - 51 2022.02
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Electro-Optical Property in Twisted Nematic Liquid Crystal without Threshold Voltage
( EID2021-4 ) 1 - 4 2022.01
Summary of the papers read (national conference and other science council) Domestic Co-author
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Special Section on Electronic Displays FOREWORD
Rumiko Yamaguchi
IEICE TRANSACTIONS ON ELECTRONICS ( IEICE-INST ELECTRONICS INFORMATION COMMUNICATIONS ENG ) E104C ( 2 ) 44 - 44 2021.02
Single author
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120 ( 345 ) 1 - 4 2021.01
Summary of the papers read (national conference and other science council) Domestic Co-author
A reverse mode LC cell which is clear in a voltage-off state and a light scattering state under the voltage application has been proposed. Some mechanisms of the light scattering have been reported, one is by a microlens array system and another is a refractive index mismatching between a polymer matrix and liquid crystal domains. In this study, we have investigated the reverse mode LC cell by using both of the microlens array and the polymer dispersion light scattering mechanisms. An n-type LC was used and a hole patterned electrode was prepared to make a concave microlens array. Electro-optical properties have been measured in LC cells using the lens effect, a polymer matrix type and the combination of two light scattering mechanism. A contribution of each light scattering mechanism has been discussed and light scattering properties was improved when the cell thickness is optimized in the combination cell.
◆Original paper【 display / non-display 】
◆Introduction and explanation【 display / non-display 】
◆International conference proceedings【 display / non-display 】
◆Other【 display / non-display 】
Grant-in-Aid for Scientific Research 【 display / non-display 】
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Grant-in-Aid for Scientific Research(C)
Project Year： 2023.04 - 2026.03
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Grant-in-Aid for Scientific Research(C)
Project Year： 2018.04 - 2022.03
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Grant-in-Aid for Scientific Research(C)
Project Year： 2015.04 - 2018.03
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Grant-in-Aid for Scientific Research(C)
Project Year： 2012.04 - 2015.03
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Grant-in-Aid for Scientific Research(C)
Project Year： 2009.04 - 2012.03
Presentations 【 display / non-display 】
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Anisotropic Light Diffusion Patterns in 180° Twisted Nematic Reverse-Mode PDLC
Yoki Yamazaki and Rumiko Yamaguchi
THE 31TH INTERNATIONAL DISPLAY WORKSHOPS (International conference center Hiroshima) 2025.12 - 2025.12
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Electro-Optical Properties of Quasi-Twisted Nematic Cell with Spontaneous 90° Twist Liquid Crystal
Rumiko Yamaguchi
THE 31TH INTERNATIONAL DISPLAY WORKSHOPS (Hiroshima International conference center Hiroshima) 2025.12 - 2025.12
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3D optical switch for quantum communication
Takao Tomono and Rumiko Yamaguchi
IEEE Photonics Conference (IPC) (Resorts World Convention Centre,SingaporeSingapore, Singapore) 2025.11 - 2025.11 IEEE
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水素結合性液晶における骨格基が物性値に及ぼす影響
小林 昇太郎，山口 留美子
日本液晶学会討論会 (京都市国際交流会館) 2025.09 - 2025.09 日本液晶学会
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色素添加型PDLCの電気光学特性におけるドメイン径とカイラルピッチ依存性
陳子杭，山口留美子
日本液晶学会討論会 (京都市国際交流会館) 2025.09 - 2025.09 日本液晶学会
Academic Activity 【 display / non-display 】
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2025.10-2027.09
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2025.04-2027.03
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2025.04-2026.03
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2024.05-2025.03
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2023.07-Now