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Asymmetric Dimers Can Be Formed by Dewetting Half-Shells of Gold Deposited on the Surfaces of Spherical Oxide Colloids
Abstract
Asymmetric dimers consisting of gold microcrystals and spherical silica colloids have been fabricated by depositing thin films of gold onto the spherical colloids to form half-shells, followed by annealing at elevated temperatures. The capability and feasibility of this procedure have been demonstrated with silica and titania beads of 0.2-2 mum in diameter and gamma-Fe2O3/polystyrene@SiO2 core-shell particles 0.5 mum in size. The dimensions of gold microcrystals could be conveniently varied in the range of 100-650 nm by controlling the thickness of gold films and/or the diameter of the spherical colloids. This method provides another route to asymmetric dimers made of colloidal particles that could be different in size, chemical composition, surface functionality, density or sign of surface charge, bulk property, or a combination of these properties.
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Citations
Cited by
Templated Techniques for the Synthesis and Assembly of Plasmonic Nanostructures
Jones, M. R., Osberg, K. D., Macfarlane, R. J., Langille, M. R., & Mirkin, C. A. (2011) · Chemical Reviews · doi:10.1021/cr1004452 · Cited by 1,159
Zhang, J., Li, Y., Zhang, X., & Yang, B. (2010) · Advanced Materials · doi:10.1002/adma.201000755 · Cited by 649
Yin, S., Wang, C., Yu, Z., Wang, J., Liu, S., & Chen, S. (2011) · Advanced Materials · doi:10.1002/adma.201100203 · Cited by 489
Clusters of Charged Janus Spheres
Hong, L., Cacciuto, A., Luijten, E., & Granick, S. (2006) · Nano Letters · doi:10.1021/nl061857i · Cited by 355
Gold/Iron Oxide Core/Hollow‐Shell Nanoparticles
Shevchenko, E. V., Bodnarchuk, M. I., Kovalenko, M. V., Talapin, D. V., Smith, R. K., Aloni, S., Heiss, W., & Alivisatos, A. P. (2008) · Advanced Materials · doi:10.1002/adma.200702994 · Cited by 321
Metadata
- Authors
- Lu, Y., Xiong, H., Jiang, X., Xia, Y., Prentiss, M., & Whitesides, G. M.
- Venue
- Journal of the American Chemical Society
- Publisher
- American Chemical Society (ACS)
- Published
- 2003-09-27
- Volume
- 125
- Issue
- 42
- Pages
- 12724-12725
- ISSN
- 0002-7863 (ISSN-L)
- 1520-5126
- OpenAlex
- W2023463652
- Cited by
- 204
- References
- 0
- FWCI
- 6.12
- Type
- journal article
- Language
- en
- Open access
- closed
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- Lu, Y., Xiong, H., Jiang, X., Xia, Y., Prentiss, M., & Whitesides, G. M. (2003). Asymmetric Dimers Can Be Formed by Dewetting Half-Shells of Gold Deposited on the Surfaces of Spherical Oxide Colloids. Journal of the American Chemical Society. https://doi.org/10.1021/ja0373014
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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.
