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首页> 外文期刊>ACS Macro Letters >Enhancement of Thermosensitivity of Gel-Immobilized Tunable Colloidal Photonic Crystals with Anisotropic Contraction
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Enhancement of Thermosensitivity of Gel-Immobilized Tunable Colloidal Photonic Crystals with Anisotropic Contraction

机译：具有各向异性收缩的凝胶固定的可调谐胶体光子晶体热敏感性的增强

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src="http://pubs.acs.org/appl/literatum/publisher/achs/journals/content/amlccd/2017/amlccd.2017.6.issue-11/acsmacrolett.7b00780/20171115/images/medium/mz-2017-007809_0005.gif">A thermosensitive poly(N-isopropylacrylamide) (PNIPAM) circular gel film containing single-crystalline colloidal crystals was prepared, and the circular edge was pinched with washers to restrain the in-plane shrinkage of the gel film. Upon heating, the film shrunk in the thickness direction selectively, resulting in a change in the crystal structure of colloids embedded in the anisotropic shrunken gel. This led to the manipulation of the optical stop-band wavelength of the colloidal photonic crystals with a higher thermosensitivity and over a wider range of wavelengths covering a wide margin on either side of the visible-light region. The present method for enhancement of the sensitivity is very simple, and the principle should also be applicable to the gel-immobilized colloidal crystals that respond to stimuli other than temperature changes. The present findings contribute to the progress of practical applications of gel-immobilized colloidal photonic crystals as tunable photonic crystals and biological and chemical sensors.
机译：src =“http://pubs.acs.org/appl/literatum/publisher/achs/journals/content/amlccd/2017/amlccd.2017.6.issue-11/acsmacrolett.7b00780/20171115/images/medium/mz -2017-007809_0005.gif“>制备热敏聚（ N - 丙烯丙烯酰胺）（丙酸胆碱胶片，含有单晶胶体晶体的圆形凝胶膜，圆形边缘用垫圈挤压以限制in -plane凝胶膜的收缩。在加热时，膜选择性地缩小厚度方向，导致嵌入各向异性缩小凝胶中的胶体的晶体结构的变化。这导致操纵胶体光子晶体的光学止动带波长，其具有较高的热敏感性和在覆盖可见光区域的任一侧的宽边缘的宽边缘的宽范围的波长范围内。本发明的用于增强灵敏度的方法非常简单，并且该原理也应该适用于凝胶固定的胶体晶体，其响应于温度变化以外的刺激。本研究结果有助于凝胶固定化胶体光子晶体作为可调谐光子晶体和生物和化学传感器的实际应用的进展。

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  • 来源
    《ACS Macro Letters》 |2017年第11期|共5页
  • 作者

    Toshimitsu Kanai; Hiroki Yano; Naoto Kobayashi; Tsutomu Sawada;

  • 作者单位

    Yokohama National University 79-5 Tokiwadai Hodogaya Yokohama Kanagawa 240-8501 Japan;

    Yokohama National University 79-5 Tokiwadai Hodogaya Yokohama Kanagawa 240-8501 Japan;

    Yokohama National University 79-5 Tokiwadai Hodogaya Yokohama Kanagawa 240-8501 Japan;

    National Institute for Materials Science 1-1 Namiki Tsukuba Ibaraki 305-0044 Japan;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 有机化学;
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