English  |  正體中文  |  简体中文  |  Items with full text/Total items : 70548/70548 (100%)
Visitors : 23135593      Online Users : 362
RC Version 7.0 © Powered By DSPACE, MIT. Enhanced by NTU Library IR team.
Scope Tips:
  • please add "double quotation mark" for query phrases to get precise results
  • please goto advance search for comprehansive author search
  • Adv. Search
    HomeLoginUploadHelpAboutAdminister Goto mobile version

    Please use this identifier to cite or link to this item: http://ir.lib.ncu.edu.tw/handle/987654321/39097

    Title: Optimum massthickness of Ag-nanoparticle film for surface enhanced Raman scattering
    Authors: Lee,KC;Pai,ST;Chang,YC;Chen,MC;Li,WH
    Contributors: 物理研究所
    Date: 1998
    Issue Date: 2010-07-08 14:04:48 (UTC+8)
    Publisher: 中央大學
    Abstract: Raman scattering from a few monolayers of benzoic acid (BA) enhanced by a thin layer of Ag-nanoparticles (AGNs) was studied, using a series of AGN films having different massthickness covering a range from 5 to 50 nm. Surface images taken using an atomic force microscope clearly reveal each individual AGN of average size similar to 25 nm. Extinction spectra of the AGN films exhibit a surface-plasma resonance peak at similar to 380 nm with a long tail extending to the visible region. When emphasizing the electromagnetic effect, the attenuated total reflection configuration was adopted to obtain an enhanced Raman spectrum. An optimum massthickness for enhancing Raman signal was found to be similar to 15 nm. A semi-empirical formula was also developed to estimate the Raman signals from a few monolayers of BA, hence the enhancement factor. The estimated enhancement factor is in the order of 10(4) for the optimum case. The enhancement is believed to originate from the excitation of surface plasmons (SPs). (C) 1998 Published by Elsevier Science S.A. All rights reserved.
    Appears in Collections:[物理研究所] 期刊論文

    Files in This Item:

    File Description SizeFormat

    All items in NCUIR are protected by copyright, with all rights reserved.

    社群 sharing

    ::: Copyright National Central University. | 國立中央大學圖書館版權所有 | 收藏本站 | 設為首頁 | 最佳瀏覽畫面: 1024*768 | 建站日期:8-24-2009 :::
    DSpace Software Copyright © 2002-2004  MIT &  Hewlett-Packard  /   Enhanced by   NTU Library IR team Copyright ©   - Feedback  - 隱私權政策聲明