English  |  正體中文  |  简体中文  |  Items with full text/Total items : 65421/65421 (100%)
Visitors : 22317306      Online Users : 372
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/987654321/39228


    Title: ENHANCED RAMAN-SCATTERING FROM CRYSTAL VIOLET AND BENZOIC-ACID MOLECULES ADSORBED ON SILVER NANOCRYSTALS
    Authors: LEI,CL;WEI,CC;CHEN,MC;OU,SY;LI,WH;LEE,KC
    Contributors: 物理研究所
    Keywords: OPTICAL-PROPERTIES;SMALL PARTICLES;SURFACE;RESONANCES;LAYERS
    Date: 1995
    Issue Date: 2010-07-08 14:08:59 (UTC+8)
    Publisher: 中央大學
    Abstract: Enhanced Raman scattering by crystal violet molecules and benzoic acid molecules adsorbed on Ag nanocrystals was measured by employing the attenuated total reflection method. The Ag nanocrystals were deposited directly on a glass substrate by the gas condensation method. Scanning electron microscopy images show that they were evenly distributed over the surface of the substrate. Films composed of Ag nanocrystals were found to be good enhancers of Raman signals. No obvious frequency shift with respect to the ''normal'' Raman lines was observed in the enhanced Raman spectra, thus indicating that the enhancement effect is mainly electromagnetic in nature. The enhancement factor depends on the laser excitation line used. Under our experimental conditions the enhancement obtained from Ag nanocrystals of mean grain size about 15 nm is an order of magnitude greater than that obtained from a flat Ag thin film of mass thickness about 56 nm. The excitation profile obtained using benzoic acid molecules shows an intensity maximum at about 500 nm, which may be linked to an effect caused by the aggregation of Ag nanocrystals.
    Relation: MATERIALS SCIENCE AND ENGINEERING B-SOLID STATE MATERIALS FOR ADVANCED TECHNOLOGY
    Appears in Collections:[物理研究所] 期刊論文

    Files in This Item:

    File Description SizeFormat
    index.html0KbHTML363View/Open


    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