研究等業績 - 国際会議プロシーディングス - 山口 留美子
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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年12月 [査読有り]
研究論文（国際会議プロシーディングス） 国内共著
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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年12月 [査読有り]
研究論文（国際会議プロシーディングス） 国内共著
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Yamaguchi R.,Kawata, S.
Proceedings of the International Display Workshops ( Proceedings of the International Display Workshops ) 27 131 - 132 2021年12月 [査読有り] [招待有り]
研究論文（国際会議プロシーディングス） 国内共著
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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年12月 [招待有り]
研究論文（国際会議プロシーディングス） 単著
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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年11月 [査読有り]
研究論文（国際会議プロシーディングス） 国内共著
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IMPROVEMENT OF REVERSE MODE LIQUID CRYSTALS USING LENS EFFECTS
R. Yamaguchi , K. Sagawa , T. Uchibori1 , R. Sasaki , S. Yanase
The 18th Topical Meeting on the Optics of Liquid Crystals 2019年09月 [招待有り]
研究論文（国際会議プロシーディングス） 国内共著
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Thresholdless electro-optical properties in homogeneous and homeotropic liquid crystal cells
Yamaguchi R.
Proceedings of the International Display Workshops ( Proceedings of the International Display Workshops ) 25 154 - 155 2018年12月 [査読有り]
研究論文（国際会議プロシーディングス） 国内共著
（原文）：Hybrid aligned ceils were designed using strong and weak polar anchoring surfaces and the LC director distribution was numerically analyzed. When the anchoring is a critical one, LCs align homogeneously or homeotropicly. Such cells have no threshold voltage LCs reorient homeotropicly or homogeneously with very low driving voltage, respectively. © 2018 International Display Workshops. All rights reserved.
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Effect of Critical Anchoring in Undistorted Twisted and Hybrid Aligned Liquid Crystal Cells
R. Yamaguchi
9th Italian- Japanese Workshops on Liquid Crystals 2018年09月 [招待有り]
研究論文（国際会議プロシーディングス） 単著
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Anchoring control by nematic liquid crystal mixture on rubbed Poly (4-vinylpyridine) surface
R. Yamaguchi and K. Kudo
27th International Liquid Crystal Conference (ILCC2018) P4-C0-19 2018年07月 [査読有り]
研究論文（国際会議プロシーディングス） 国内共著
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Nonlinear Optical Property of Negative Type Nematic Liquid Crystal Assisted by Voltage Application : Numerical Analysis
R. Yamaguchi, Koji Usui, Norihisa Akamatsu, Atsushi Shishido and Motoi Kinoshita
27th International Liquid Crystal Conference (ILCC2018) P4-C1-8 2018年07月 [査読有り]
研究論文（国際会議プロシーディングス） 国内共著
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Twist Angle Controllable Liquid Crystal Cell by Out-of-Plane Filed Using Strong/Weak Anchoring surfaces
R. Yamaguchi and Y. Sakamoto
27th International Liquid Crystal Conference (ILCC2018) 5-AH-2 2018年07月 [査読有り] [招待有り]
研究論文（国際会議プロシーディングス） 国内共著
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Numerical Analysis of Electro-Optical Property in Twisted Nematic Cell Using Strong/Weak Anchoring
Y. Sakamotoi and R. Yamaguchi
27th International Liquid Crystal Conference (ILCC2018) P2-C1-31 2018年07月 [査読有り]
研究論文（国際会議プロシーディングス） 国内共著
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Improvement of Light Scattering in Reverse mode Liquid Crystal Cell with Microlens Structure
K. Sagawa and R. Yamaguchi
27th International Liquid Crystal Conference (ILCC2018) P2-C1-28 2018年07月 [査読有り]
研究論文（国際会議プロシーディングス） 国内共著
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Hybrid Aligned Reverse Mode Cell Using Dual Frequency Liquid Crystal
R. Ushizaki and R. Yamaguchi
27th International Liquid Crystal Conference (ILCC2018) P2-C1-27 2018年07月 [査読有り]
研究論文（国際会議プロシーディングス） 国内共著
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Incident Angle Property in Hybrid Aligned Reverse Mode Liquid Crystal for Smart Glass Application
Rumiko Yamaguchi, Yuki Oikawa, Ryo Ushizaki, Tomoya Takasu
The papers of Joint Thechnical Meeting on "Dielectrics and Electrical Institution" and "Electronic Materials", IEE Japan DEI-18 69 - 72 2018年01月 [招待有り]
研究論文（国際会議プロシーディングス） 国内共著
We have proposed a hybrid aligned nematic liquid crystal cell using a polymer stabilized technology for Smart glass application. The cell shows a reverse mode scattering property, which is transparent at any viewing angle in a voltage off-state. The cell turns to opaque by applying the voltage and has an asymmetrical scattering property at oblique incident angles. When using the liquid crystal with positive dielectric anisotropy, the oblique incident angle presenting the strong light scattered state is in the opposite direction when using negative dielectric anisotropy. In addition, we apply a dual-frequency liquid crystal to the cell and successfully switch the incident angle which gives the strong light scattering state by the frequency of the applied AC voltage. We expect the proposed devices can be a candidate for smart glass technology which works as a window blind selectively obstructing a midday sunlight.
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Homogeneous-Twisted Nematic Transition Mode Liquid Crystal Display by Out-of-plane Field
Rumiko Yamaguchi and Yoshiki Sakamoto
Proceedings of The International Display Workshops 24 192 - 195 2017年12月 [査読有り]
研究論文（国際会議プロシーディングス） 国内共著
We have proposed a low driving LCD mode which changes from a homogeneous orientation to a TN orientation by applying out-of-plane field. The LC is sandwiched between weak and strong anchoring surfaces and easy axes of two surfaces are at right angles. LC director distributions and electro optical properties are numerically analyzed. A transmittance of the cell between crossed polarizers is 0% because of the homogeneous orientation in the voltage off state. Tilt and twist angles of LCs simultaneously increase and the transmittance also increases almost to 100% by the applied voltage of 1.5V, subsequently decreases to 0% by the voltage of 2.5 V. © 2017 Proceedings of the International Display Workshops. All rights reserved.
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Nematic liquid crystal alignment and anchoring properties on rubbed Poly (4-vinylpyridine) surface
Kyosuke Kudo and Rumiko Yamaguchi
Proceedings of The International Display Workshops 24 268 - 269 2017年12月 [査読有り]
研究論文（国際会議プロシーディングス） 国内共著
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Electrooptical Property of Polymer Stabilized Reverse Mode Cell by Nonuniform UV Irradiation
Ryousuke Sasaki, Rumiko Yamaguchi
Proceedings of The International Display Workshops 24 603 - 604 2017年12月 [査読有り]
研究論文（国際会議プロシーディングス） 国内共著
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Numerical Analysis in Homogeneous-Twisted Nematic Transition Mode of Liquid Crystal Cell Using Weak and Strong Anchoring Surfaces
Yoshiki Sakamoto and Rumiko Yamaguchi
Proceedings of The International Display Workshops 24 294 - 295 2017年12月 [査読有り]
研究論文（国際会議プロシーディングス） 国内共著
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Electrooptical property of polymer stabilized reverse mode cell by non uniform UV irradiation
Ryousuke Sasaki, Rumiko Yamaguchi
Proceedings of the International Display Workshops 1 603 - 604 2017年 [査読有り]
研究論文（国際会議プロシーディングス）
Polymer stabilized reverse mode cells are prepared by irradiating with UV light through a line-and-space photomask. The polymer density is unevenly distributed in the cell and lower polymer density results in a lower threshold voltage than that prepared using uniform UV irradiation. High polymer density parts contribute to increasing mechanical resistance.