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          Institute: Fritz-Haber-Institut     Collection: Physical Chemistry     Display Documents



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ID: 111928.0, Fritz-Haber-Institut / Physical Chemistry
Nanoscale probing of adsorbed species by tip-enhanced Raman spectroscopy
Authors:Pettinger, Bruno; Ren, Bin; Picardi, Gennaro; Schuster, Rolf; Ertl, Gerhard
Language:English
Date of Publication (YYYY-MM-DD):2004-03-05
Title of Journal:Physical Review Letters
Journal Abbrev.:Phys. Rev. Lett.
Volume:92
Issue / Number:09
Start Page:096101–1
End Page:096101–4
Copyright:© 2004 The American Physical Society
Review Status:Peer-review
Audience:Experts Only
Abstract / Description:Tip-enhanced Raman spectroscopy (TERS) is based on the optical excitation of localized surface plasmons in the tip-substrate cavity, which provides a large but local field enhancement near the tip apex. We report on TERS with smooth single crystalline surfaces as substrates. The adsorbates were CN– ions at Au(111) and malachite green isothiocyanate (MGITC) molecules at Au(111) and Pt(110) using either Au or Ir tips. The data analysis yields Raman enhancements of about 4x105 for CN– and up to 106 for MGITC at Au(111) with a Au tip, probing an area of less than 100 nm radius.
Free Keywords:Goldstone bosons; organic compounds; adsorbed layers; Raman spectra; platinum; iridium; nanotechnology
External Publication Status:published
Document Type:Article
Communicated by:Gerhard Ertl
Affiliations:Fritz-Haber-Institut/Physical Chemistry
External Affiliations:Ren B, Dept. of Chemistry, Xiamen University, Xiamen 361005, China
Identifiers:URL:http://link.aps.org/abstract/PRL/v92/e096101
DOI:10.1103/PhysRevLett.92.096101
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