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A modified transmission tip-enhanced Raman scattering (TERS) setup provides access to opaque samples
Tanja Deckert-Gaudig1, Marc Richter, Detlef Knebel
1IPHT-Leibniz Institute of Photonic Technology, Albert-Einstein-Str. 9, 07745 Jena, Germany.
Applied Spectroscopy
|July 26, 2014
Summary
This study introduces a simple modification to tip-enhanced Raman scattering (TERS) setups, enabling the chemical analysis of opaque surfaces. This advancement expands the applicability of high-resolution nanoscale chemical characterization using TERS.
Area of Science:
- Nanotechnology
- Surface Science
- Spectroscopy
Background:
- Tip-enhanced Raman scattering (TERS) combines scanning probe microscopy and Raman spectroscopy for high-resolution chemical surface characterization.
- Current TERS setups present compromises, with transmission back-reflection designs offering high efficiency but limited to transparent samples, while upright setups are needed for opaque samples at lower efficiency.
Purpose of the Study:
- To present a modification for transmission TERS setups to enable the analysis of opaque samples without compromising efficiency.
- To expand the versatility of TERS for nanoscale chemical identification.
Main Methods:
- Incorporation of a dichroic mirror into a transmission TERS setup.
- Utilizing established TERS principles for surface chemical analysis.
Main Results:
- The modified transmission TERS setup provides easy access to opaque samples.
- The addition of a dichroic mirror allows for the analysis of previously inaccessible sample types within this configuration.
Conclusions:
- A dichroic mirror effectively adapts transmission TERS for opaque samples, broadening its application scope.
- This modification offers a straightforward solution for label-free, nanoscale chemical characterization of diverse surfaces.
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