Tip-enhanced Raman scattering from bridged nanocones
نویسندگان
چکیده
منابع مشابه
Tip-Enhanced Raman Scattering
Background The ability to identify small quantities of adsorbed analyte or structural features down to the few-molecule level is a key challenge in nanotechnology. Optical spectroscopy provides an attractive means to achieve such identification via noninvasive implementations and the potential for chemical sensitivity. Raman scattering has emerged as a particularly powerful technique due to its...
متن کاملTip-Enhanced Raman Scattering (TERS)
Background The ability to identify small quantities of adsorbed analyte or structural features down to the few-molecule level is a key challenge in nanotechnology. Optical spectroscopy provides an attractive means to achieve such identification via non-invasive implementations and the potential for chemical sensitivity. Raman scattering has emerged as a particularly powerful technique due to it...
متن کاملSurface- and tip-enhanced resonant Raman scattering from CdSe nanocrystals.
Surface- and tip-enhanced resonant Raman scattering (resonant SERS and TERS) by optical phonons in a monolayer of CdSe quantum dots (QDs) is demonstrated. The SERS enhancement was achieved by employing plasmonically active substrates consisting of gold arrays with varying nanocluster diameters prepared by electron-beam lithography. The magnitude of the SERS enhancement depends on the localized ...
متن کاملChemical and electromagnetic mechanisms of tip-enhanced Raman scattering.
In this paper, we attempt to reveal the nature of the chemical and electromagnetic mechanisms of tip-enhanced Raman scattering (TERS). Direct visual evidence regarding the chemical mechanism via charge transfer was obtained with charge difference density. It is found that there are several kinds of charge transfer: (1) tip to molecule, (2) surface to molecule, (3) tip and surface to molecule si...
متن کاملAdvances in TERS (tip-enhanced Raman scattering) for biochemical applications.
TERS (tip-enhanced Raman scattering) provides exceptional spatial resolution without any need for labelling and has become a versatile tool for biochemical analysis. Two examples will be highlighted here. On the one hand, TERS measurements on a single mitochondrion are discussed, monitoring the oxidation state of the central iron ion of cytochrome c, leading towards a single protein characteriz...
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ژورنال
عنوان ژورنال: Optics Express
سال: 2010
ISSN: 1094-4087
DOI: 10.1364/oe.18.023790