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The SERS Activity of a Supported Ag Nanocube Strongly Depends on Its Orientation Relative to Laser Polarization
Abstract
Silver nanocubes with sharp or truncated corners were synthesized, deposited on silicon substrates, and functionalized with Raman-active thiols for surface-enhanced Raman scattering (SERS) studies. The use of substrates with registration marks allowed us to correlate the SERS spectra from individual nanocubes to their physical parameters revealed by high-resolution SEM imaging. We observed dramatic variations in SERS intensity when the nanocubes were oriented at different angles relative to the polarization of excitation laser. This angular dependence was less significant when the nanocubes were truncated and became nearly spherical in profile. Numerical calculations were employed to confirm our observations, and to attribute the source of variation to the difference in near-field distribution between different laser polarizations.
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Cited by
Shape‐Controlled Synthesis of Metal Nanocrystals: Simple Chemistry Meets Complex Physics?
Xia, Y., Xiong, Y., Lim, B., & Skrabalak, S. E. (2009) · Angewandte Chemie International Edition · doi:10.1002/anie.200802248 · Cited by 5,702
Self-citationSERS Nanoparticles in Medicine: From Label-Free Detection to Spectroscopic Tagging
Lane, L. A., Qian, X., & Nie, S. (2015) · Chemical Reviews · doi:10.1021/acs.chemrev.5b00265 · Cited by 873
Li, W., Camargo, P. H. C., Lu, X., & Xia, Y. (2009) · Nano Letters · doi:10.1021/nl803621x · Cited by 623
Self-citationGuerrini, L., & Graham, D. (2012) · Chemical Society Reviews · doi:10.1039/c2cs35118h · Cited by 441
Joining of Silver Nanomaterials at Low Temperatures: Processes, Properties, and Applications
Peng, P., Hu, A., Gerlich, A. P., Zou, G., Liu, L., & Zhou, Y. N. (2015) · ACS Applied Materials & Interfaces · doi:10.1021/acsami.5b02134 · Cited by 364
Metadata
- Authors
- McLellan, J. M., Li, Z.-Y., Siekkinen, A. R., & Xia, Y.
- Venue
- Nano Letters
- Publisher
- American Chemical Society (ACS)
- Published
- 2007-03-22
- Volume
- 7
- Issue
- 4
- Pages
- 1013-1017
- ISSN
- 1530-6984 (ISSN-L)
- 1530-6992
- OpenAlex
- W2125107358
- Cited by
- 345
- References
- 0
- FWCI
- 13.74
- Type
- journal article
- Language
- en
- Open access
- closed
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- McLellan, J. M., Li, Z.-Y., Siekkinen, A. R., & Xia, Y. (2007). The SERS Activity of a Supported Ag Nanocube Strongly Depends on Its Orientation Relative to Laser Polarization. Nano Letters. https://doi.org/10.1021/nl070157q
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