National Taiwan Ocean University Institutional Repository:Item 987654321/47513
English  |  正體中文  |  简体中文  |  全文笔数/总笔数 : 28611/40652
造访人次 : 754447      在线人数 : 53
RC Version 4.0 © Powered By DSPACE, MIT. Enhanced by NTU Library IR team.
搜寻范围 进阶搜寻


题名: Single-shot laser treatment provides quasi-three-dimensional paper-based substrates for SERS with attomolar sensitivity
作者: Hsuen-Li Chen
Chen-Chieh Yu
Sin-Yi Chou
Yi-Chuan Tseng
Shao-Chin Tseng
Yu-Ting Yena
贡献者: 國立臺灣海洋大學:光電科學研究所
日期: 2015-02
上传时间: 2018-07-31T03:15:52Z
出版者: Nanoscale
摘要: Abstract: In this study, an eco-friendly and ultrasensitive paper substrate is developed for surface-enhanced Raman scattering (SERS) with performance approaching single molecule detection. By exploiting the laser-induced photothermal effect, paper fibrils with hybrid micro- and nanostructures can facilitate the formation of highly dense metal nanoparticles (NPs) after a single shot of laser illumination. Metal films deposited on the paper substrates feature discontinuous morphologies, with the fragments acting as multiple nucleation sites. Because thermal conductivity is low on the broken films and the underlying paper fibrils, the incident energy is absorbed efficiently. Moreover, the quasi-three-dimensional distribution of NPs on the SERS paper greatly enhances the SERS signals within the effective collection volume of a Raman microscope. As a result of the large number of highly effective hot spots and the condensation effect, the hydrophobic SERS paper provides SERS signals with stable and uniform reproducibility throughout the detection area. The limits of detection when using the paper substrates reach the attomolar (10−18 M) level, thereby approaching single molecule detection.
關聯: 7(5) pp.1667-1677
显示于类别:[光電科學研究所] 期刊論文


档案 描述 大小格式浏览次数



著作權政策宣告: 本網站之內容為國立臺灣海洋大學所收錄之機構典藏,無償提供學術研究與公眾教育等公益性使用,請合理使用本網站之內容,以尊重著作權人之權益。
網站維護: 海大圖資處 圖書系統組
DSpace Software Copyright © 2002-2004  MIT &  Hewlett-Packard  /   Enhanced by   NTU Library IR team Copyright ©   - 回馈