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Localized Surface Plasmon Resonance Nanosensor: A High-Resolution Distance-Dependence Study Using Atomic Layer Deposition
Abstract
Atomic layer deposition (ALD) is used to deposit 1-600 monolayers of Al(2)O(3) on Ag nanotriangles fabricated by nanosphere lithography (NSL). Each monolayer of Al(2)O(3) has a thickness of 1.1 A. It is demonstrated that the localized surface plasmon resonance (LSPR) nanosensor can detect Al(2)O(3) film growth with atomic spatial resolution normal to the nanoparticle surface. This is approximately 10 times greater spatial resolution than that in our previous long-range distance-dependence study using multilayer self-assembled monolayer shells. The use of ALD enables the study of both the long- and short-range distance dependence of the LSPR nanosensor in a single unified experiment. Ag nanoparticles with fixed in-plane widths and decreasing heights yield larger sensing distances. X-ray photoelectron spectroscopy, variable angle spectroscopic ellipsometry, and quartz crystal microbalance measurements are used to study the growth mechanism. It is proposed that the growth of Al(2)O(3) is initiated by the decomposition of trimethylaluminum on Ag. Semiquantitative theoretical calculations were compared with the experimental results and yield excellent agreement.
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Citations
Cited by
Surface-Enhanced Raman Spectroscopy
Haynes, C. L., McFarland, A. D., & Van Duyne, R. P. (2005) · Analytical Chemistry · doi:10.1021/ac053456d · Cited by 1,144
Surface plasmon–polariton length scales: a route to sub-wavelength optics
Barnes, W. L. (2006) · Journal of Optics A: Pure and Applied Optics · doi:10.1088/1464-4258/8/4/s06 · Cited by 678
Metadata
- Authors
- Whitney, A. V., Elam, J. W., Zou, S., Zinovev, A. V., Stair, P. C., Schatz, G. C., & Van Duyne, R. P.
- Venue
- The Journal of Physical Chemistry B
- Publisher
- American Chemical Society (ACS)
- Published
- 2005-10-05
- Volume
- 109
- Issue
- 43
- Pages
- 20522-20528
- ISSN
- 1520-5207 (ISSN-L)
- 1520-6106
- OpenAlex
- W2147138959
- Cited by
- 310
- References
- 0
- FWCI
- 9.76
- Type
- journal article
- Language
- en
- Open access
- closed
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- Whitney, A. V., Elam, J. W., Zou, S., Zinovev, A. V., Stair, P. C., Schatz, G. C., & Van Duyne, R. P. (2005). Localized Surface Plasmon Resonance Nanosensor: A High-Resolution Distance-Dependence Study Using Atomic Layer Deposition. The Journal of Physical Chemistry B. https://doi.org/10.1021/jp0540656
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