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Alignment of Rod-Shaped Gold Particles by Electric Fields
Open accessAbstract
The electro-optical response of colloidal dispersions of rod-shaped gold particles is studied for various aspect ratios (2.6 < L/d < 49; d = 15 nm) by monitoring the absorbance spectra in the visible wavelength regime. The absorbance spectra strongly depend on the degree of orientational order of the rods and the direction of the polarization of the incident light with respect to the applied electric field. From the change in absorbance of the transverse resonance the electro-optical effect is deduced: at low electric field strengths a linear dependence on the squared electric field strength is observed, and at sufficiently high electric field strengths saturation occurs. This is in agreement with electro-optical theory. With increasing length, the anisotropy in electric polarizability increases from 6·10 -30 F·m 2 to 12·10 -30 F·m 2 . It is found that the anisotropy in electric polarizability depends on the square root of the particle length.
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Citations
Cited by
Ghosh, S. K., & Pal, T. (2007) · Chemical Reviews · doi:10.1021/cr0680282 · Cited by 2,782
Gold Nanorods: From Synthesis and Properties to Biological and Biomedical Applications
Huang, X., Neretina, S., & El‐Sayed, M. A. (2009) · Advanced Materials · doi:10.1002/adma.200802789 · Cited by 1,921
Tailoring Surface Plasmons through the Morphology and Assembly of Metal Nanoparticles
Liz-Marzán, L. M. (2006) · Langmuir · doi:10.1021/la0513353 · Cited by 1,645
Mishra, S. R., & Tracy, J. B. (2018) · ACS Applied Nano Materials · doi:10.1021/acsanm.8b00394 · Cited by 68
Metadata
- Authors
- van der Zande, B. M. I., Koper, G. J. M., & Lekkerkerker, H. N. W.
- Venue
- The Journal of Physical Chemistry B
- Publisher
- American Chemical Society (ACS)
- Published
- 1999-06-26
- Volume
- 103
- Issue
- 28
- Pages
- 5754-5760
- ISSN
- 1520-5207 (ISSN-L)
- 1520-6106
- OpenAlex
- W1966906492
- Cited by
- 163
- References
- 0
- FWCI
- 2.97
- Type
- journal article
- Language
- en
- Open access
- green
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Bibliographic data: Semantic Scholar, OpenAlex, Crossref.
Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.
