English  |  正體中文  |  简体中文  |  全文笔数/总笔数 : 62568/95225 (66%)
造访人次 : 2513023      在线人数 : 211
RC Version 7.0 © Powered By DSPACE, MIT. Enhanced by NTU Library & TKU Library IR team.
搜寻范围 查询小技巧:
  • 您可在西文检索词汇前后加上"双引号",以获取较精准的检索结果
  • 若欲以作者姓名搜寻,建议至进阶搜寻限定作者字段,可获得较完整数据
  • 进阶搜寻

    jsp.display-item.identifier=請使用永久網址來引用或連結此文件: https://tkuir.lib.tku.edu.tw/dspace/handle/987654321/124519

    题名: Toward femtomolar detection of heavy metal ions using uniform liquid crystal films with 1 × 1 cm2 active regions
    作者: Chen, Chih-hsin
    日期: 2023-03-17
    上传时间: 2023-09-18 12:05:11 (UTC+8)
    出版者: Elsevier
    摘要: Photoresist grids (PGs) hosting uniform ligand-doped liquid crystal (LC) films with large active regions of 1 × 1 cm2 are fabricated in this work. The length and thickness of the meshes of the PGs are optimized by studying the anchoring energy of the alignment layers of the LC films. The PGs hosting the LC films exhibit the significant transition of optical signals from dark to bright after the binding of ligand and Hg2+ reorients the LC. The optimized PGs hosting the LC films have an extremely low limit of detection (LOD) of 5.0 ± 0.4 femtomolar (fM) for detecting Hg2+ in aqueous solutions. The LOD is 2 × 106 times lower than those of current LC sensors, and 24 times lower than those of current electrochemical sensors. Without using a polarized optical microscope, the image of a PG hosting an LC film is clearly observed by naked eyes when the film is exposed to an aqueous solution with 5.0 ± 0.4 fM Hg2+. The extremely low LOD and real naked-eye detection are great achievements for the practical applications of LC sensors.
    關聯: Optics & Laser Technology 163, 109352
    DOI: 10.1016/j.optlastec.2023.109352
    显示于类别:[化學學系暨研究所] 期刊論文


    档案 描述 大小格式浏览次数



    DSpace Software Copyright © 2002-2004  MIT &  Hewlett-Packard  /   Enhanced by   NTU Library & TKU Library IR teams. Copyright ©   - 回馈