Highly efficient nano-tips with metal-dielectric coatings for tip-enhanced spectroscopy applications

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Author(s) Xudong Cui, Erni, Daniel, Weihua, Zhang, Zenobi, Renato
Publication Type Journal Items, Publication Status: Published
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Title Highly efficient nano-tips with metal-dielectric coatings for tip-enhanced spectroscopy applications
Author(s) Xudong Cui
Erni, Daniel
Weihua, Zhang
Zenobi, Renato
Journal or Series Title Chemical physics letters
Volume Number 453
Issue Number 4-6
Start Page 262
End Page 265
ISSN 0009-2614
Publisher Elsevier
Publication Place Amsterdam
Publication Date 2008
Abstract We studied how a protection layer influences the performance of an Ag-coated dielectric tip in tip-enhanced Raman spectroscopy using 3D simulations. Two typical chemically inert materials, Au and SiO2 were considered in this work. Neither of them introduces a significant shift of the resonance frequency; the field enhancement as well as the spatial resolution can also be preserved with a thin protective layer. Surprisingly, a 5 nm layer of SiO2 can even improve the field enhancement of the tip. This provides a new method to prevent Ag tips from undesired physical and chemical damages without losing their original performance for TERS.
DOI 10.1016/j.cplett.2008.01.047
Additional Notes Received 29 October 2007, Accepted 17 January 2008, Available online 21 January 2008
Document Type Article
Publication Status Published
Language English
Assigned Organisational Unit(s) 03430
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NEBIS System Number 000033700
Source Database ID PP-41465
WOS-000254129500026
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@article{Xdng2008,
  author = "Xudong Cui and Erni, Daniel and Weihua, Zhang and Zenobi, Renato",
  title = "{H}ighly efficient nano-tips with metal-dielectric coatings for tip-enhanced spectroscopy applications",
  journal = "Chemical physics letters",
  year = 2008,
  volume = "453",
  number = "4-6",
  pages = "262--265",
}


E-Citations record created: Thu, 01 Apr 2010, 23:01:52 CET