Highly stable, protected plasmonic nanostructures for tip enhanced Raman spectroscopy

Carlos A. Barrios; Andrey V. Malkovskiy; Alexander M. Kisliuk; Alexei P. Sokolov; Mark D. Foster

doi:10.1021/jp8098126

Highly stable, protected plasmonic nanostructures for tip enhanced Raman spectroscopy

Carlos A. Barrios, Andrey V. Malkovskiy, Alexander M. Kisliuk, Alexei P. Sokolov, Mark D. Foster

Research output: Contribution to journal › Article › peer-review

64 Scopus citations

Abstract

An ultrathin aluminum oxide (Al ₂O ₃) coating improves significantly the stability of plasmonic structures used in tip enhanced Raman spectroscopy (TERS). The coating does not alter the favorable optical properties of metallic structures yet improves wear resistance and inhibits degradation, so that signal enhancement remains constant over 40 days for structures with a 3 nm thick protective coating. Most unprotected structures show substantial losses in enhancement over periods as short as 10 days when stored and used in ambient conditions.

Original language	English
Pages (from-to)	8158-8161
Number of pages	4
Journal	Journal of Physical Chemistry C
Volume	113
Issue number	19
DOIs	https://doi.org/10.1021/jp8098126
State	Published - May 14 2009
Externally published	Yes

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abstract = "An ultrathin aluminum oxide (Al 2O 3) coating improves significantly the stability of plasmonic structures used in tip enhanced Raman spectroscopy (TERS). The coating does not alter the favorable optical properties of metallic structures yet improves wear resistance and inhibits degradation, so that signal enhancement remains constant over 40 days for structures with a 3 nm thick protective coating. Most unprotected structures show substantial losses in enhancement over periods as short as 10 days when stored and used in ambient conditions.",

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AU - Barrios, Carlos A.

AU - Malkovskiy, Andrey V.

AU - Kisliuk, Alexander M.

AU - Sokolov, Alexei P.

AU - Foster, Mark D.

PY - 2009/5/14

Y1 - 2009/5/14

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AB - An ultrathin aluminum oxide (Al 2O 3) coating improves significantly the stability of plasmonic structures used in tip enhanced Raman spectroscopy (TERS). The coating does not alter the favorable optical properties of metallic structures yet improves wear resistance and inhibits degradation, so that signal enhancement remains constant over 40 days for structures with a 3 nm thick protective coating. Most unprotected structures show substantial losses in enhancement over periods as short as 10 days when stored and used in ambient conditions.

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Highly stable, protected plasmonic nanostructures for tip enhanced Raman spectroscopy

Abstract

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