Optical manipulation of nanofluid network and optical neuron circuit

2021 Fiscal Year Final Research Report

• Project/Area Number: 19K05302
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Review Section: Basic Section 30020:Optical engineering and photon science-related
• Research Institution: Niigata University
• Principal Investigator: OHDAIRA Yasuo 新潟大学, 自然科学系, 准教授 (10361891)
• Co-Investigator(Kenkyū-buntansha): 岡 寿樹 北里大学, 理学部, 教授 (00508806) ; 新保 一成 新潟大学, 自然科学系, 教授 (80272855)
• Project Period (FY): 2019-04-01 – 2022-03-31
• Keywords: ナノ流体 / アゾ微粒子 / 自己組織化 / 光操作 / 光ニューロン回路

Outline of Final Research Achievements

Optical manipulation of nanofluid networks utilizing azobenzene polymer particles and its application to optical neuron circuit were investigated. The basic techniques were developed for optical neuron circuit based on material transportation and optical signal transfer in fluid network structures. In this study, azobenzene particles were employed as an anchor to control fluid distribution. We found anomalous optical deformation of azo particles in a liquid, and investigated self-organization control of liquid by azo particles. Material transportation at an interface of micro liquid crystal, optical propagation in a microfluid, and nano manipulation of the shape of azo nano particles were investigated. Near field optical signal transfer utilizing nanofluid network structures was considered.

Free Research Field

近接場光学

Academic Significance and Societal Importance of the Research Achievements

本研究の目指す光ニューロン回路機構の開発を通じて，液中におけるアゾベンゼン微粒子の特異な光変形について見出すとともに，光変形するアゾ微粒子をアンカーとして用いたマイクロ流体の光操作，およびマイクロ流体流路における界面物質移動や光伝搬などの独創的な研究を推進し，高い学術的意義をもつ成果を得た。さらに，光近接場の局所偏光によるナノアゾ微粒子の光変形，ナノ流体ネットワーク形成への展開，および近接場信号輸送を検討し，光ニューロン回路の基盤を整えた。これらは，ソフトマターによる光信号制御や光信号処理に基づく新たな知能デバイス開発に繋がるものであり，社会的に有用な応用展開が期待される。