Researchers

NAKAYAMA Keizo

NAKAYAMA Keizo
Associate Professor
Faculty Department of Electrical, Electronic and Communication Engineering / Graduate School of Science and Engineering
Researchmap https://researchmap.jp/read0063830

Education and Career

Education

  • 1988/04 - 1993/03 , Nara National College of Technology, Advanced Engineering Faculty,
  • 1993/04 - 1995/03 , Nara National College of Technology, Advanced Electronic and Information Engineering Course,
  • 1995/04 - 1997/03 , Osaka University, Graduate School of Engineering,
  • 1997/04 - 2000/03 , Osaka University, Graduate School of Engineering,

Academic & Professional Experience

  • Apr. 2021 - Today , Kindai University Faculty of Science and Engineering Department of Electric and Electronic Engineering Associate Professor
  • Apr. 2005 - Mar. 2021 , Kindai University Faculty of Science and Eng., Department of Electric and Electronic Eng. Lecturer
  • Apr. 2000 - Mar. 2005 , Shizuoka University Faculty of Engineering Research Associate
  • Apr. 1997 - Mar. 2000 , 日本学術振興会特別研究員DC1

Research Activities

Research Areas

  • Environmental science/Agricultural science , Environmental impact assessment
  • Life sciences , Rehabilitation science
  • Nanotechnology/Materials , Optical engineering and photonics

Research Interests

light and shadow, 光セキュリティ, 液晶眼鏡, 液晶, 色弁別補助装置, electrooptic effect ferroelectric liquid crystal optical security system encrypted hologram

Published Papers

  1. Light-quality-tunable illumination system using a liquid crystal light control film for application to lighting for cultural properties: Practice for chipped stone tools in the Jōmon period
    Keizo Nakayama; Ichiro Nakamura; Atsuko Miyaji; Michiko Nakayama
    Studies in Science and Technology  14  (2)  , 111-116, Dec. 2025  , Refereed
  2. Proposal of Protocol for Construction of Light-Quality Tunable Illumination System using Polymer Dispersed Liquid Crystal
    NAKAYAMA Keizo; NAKAYAMA Michiko
    Journal of the Illuminating Engineering Institute of Japan  104  (2)  , 76-81, Feb. 2020  , Refereed
  3. Assist Device in Color Discrimination using Heilmeier Type Guest-Host Liquid Crystal for Red-Green Color Vision Defect
    NAKAYAMA Keizo
    Electronics and Communications in Japan  102  (8)  , 17-24, Jul. 2019  , Refereed

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Books etc

  1. High Quality Liquid Crystal Displays and Smart Devices Volume 2: Surface alignment, new technologies and smart device applications , NAKAYAMA Keizo , Chapter 37: Optical Security Devices Using UV Curable Nematic Liquid Crystals , The Institution of Engineering and Technology , Mar. 2019

Conference Activities & Talks

  1. セキュリティ素子応用に向けた液晶のシュリーレン組織における4ブラシ構造のブラシ間角度による形状分類 , 阿部 泰千; 中山 敬三 , 令和7年(2025年)度電気学会関西支部若手研究発表会 , 3, Nov. 2025
  2. 液晶調光フィルムによる光質制御時の影のエッジの滑らかさを指標とした硬軟評価 , 岡田 素哉; 中山 敬三 , 令和7年（2025年）電気学会 基礎・材料・共通部門大会 , 3, Sep. 2025
  3. セキュリティ素子応用に向けた液晶のシュリーレン組織画像からの特有の交点に着目した特徴量抽出 , 阿部 泰千; 中山 敬三 , 令和7年（2025年）電気学会 基礎・材料・共通部門大会 , 3, Sep. 2025

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MISC

  1. Development of Smart Pop-up Tag for Swimming Behavior Logging of the Aquatic Organisms , NAKAYAMA Keizo , Journal of Smart Processing , 5 , 3 , 215 , 217 , May. 2016
  2. 3C08 Extraction of patterns from polarizing micrographs of patterned UV-curable nematic liquid crystal for security system , NAKAYAMA Keizo; OHTSUBO Junji , Proceedings of Japanese Liquid Crystal Society Annual meeting , 2015 , _3C08 , 1_-_3C08-2 , 2015
    Summary:By using an ultraviolet-curable nematic liquid crystal material, some designed patterns can be stored in the liquid crystal cells with areas polymerized under isotropic and nematic phases. We have proposed a security device that uses the random pattern of optical texture in each cell. In other words, the random patterns of schlieren in each cell can be used as identifiers. For security system using these devices, it is necessary to develop the computer-based system capable of comparing optical texture patterns. In this research, methods of extraction of written patterns were studied for security system.
  3. Evaluating Similarity between Patterns of Fingerprint Texture in Chiral Nematic Liquid Crystal using Stripe Direction , Nakayama Keizo; Ohtsubo Junji , Proceedings of Japanese Liquid Crystal Society Annual meeting , 2014 , PB35 , 2014
    Summary:<p>We have proposed a security device that uses the random pattern of fingerprint texture in a UV-curable chiral nematic liquid crystal for unique identification information. For the security system using the patterns provided by the proposed security devices embedded in ID cards, it is important to evaluate the similarity between these patterns. Althoug the basic method is cross-correlation using the intensities of each pixel in the images, we studied the method in which the stripe directions extracted from fingerprint texture patterns were used.</p>

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Patents

  1. 色弁別補助装置 , 中山 敬三

Awards & Honors

  1. Mar. 2026, 電気学会, （指導学生の受賞）令和7年 電気学会 全国大会 電気学会優秀論文発表賞
  2. Dec. 2025, 電気学会, （指導学生の受賞）2025年 電気学会 関西支部若手研究発表会 奨励賞
  3. Oct. 2025, 電気学会, （指導学生の受賞）2025年 電気学会 基礎・材料・共通部門大会 若手ポスター優秀賞（日本語）

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Research Grants & Projects

  1. 文部科学省, 科学研究費補助金(挑戦的萌芽研究), 液晶素子を用いた色覚異常者向け色弁別補助デバイスの開発
  2. Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research, Development of authentication system for the optical security tag using random textures in liquid crystals , Kinki University
  3. 文部科学省, 科学研究費補助金(若手研究(B)), 液晶素子を用いた戻り光半導体レーザの特性制御 , 静岡大学->近畿大学

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