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Assembly of Colloidal Crystals at Electrode Interfaces
Abstract
We describe a theory for a new type of colloid behavior whereby particles deposited on a surface by electrophoresis are manipulated to form two-dimensional crystals. Since the particles are equally charged, the clustering is opposite that expected from electrostatic considerations. Such behavior is consistent with migration due to electrohydrodynamic flows associated with polarization layers and ion currents. Provided colloid stability is maintained, the assembly processes take place with both dc and ac fields and may be modulated by adjusting the field strength or frequency. No migration is present at frequencies above 1 MHz. Two-dimensional fluid and crystalline states can be formed on the electrode surface. Experiments with patterned electrodes demonstrate the presence of the electrohydrodynamic flow. A mathematical model of the electrohydrodynamics provides insight into the assembly process.
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Cited by
One‐Dimensional Nanostructures: Synthesis, Characterization, and Applications
Xia, Y., Yang, P., Sun, Y., Wu, Y., Mayers, B., Gates, B., Yin, Y., Kim, F., & Yan, H. (2003) · Advanced Materials · doi:10.1002/adma.200390087 · Cited by 8,559
AC Electric-Field-Induced Fluid Flow in Microelectrodes
Ramos, A., Morgan, H., Green, N. G., & Castellanos, A. (1999) · Journal of Colloid and Interface Science · doi:10.1006/jcis.1999.6346 · Cited by 527
Armstrong, E., & O'Dwyer, C. (2015) · Journal of Materials Chemistry C · doi:10.1039/c5tc01083g · Cited by 342
Metadata
- Authors
- Trau, M., Saville, D. A., & Aksay, I. A.
- Venue
- Langmuir
- Publisher
- American Chemical Society (ACS)
- Published
- 1997-11-01
- Volume
- 13
- Issue
- 24
- Pages
- 6375-6381
- ISSN
- 0743-7463 (ISSN-L)
- 1520-5827
- OpenAlex
- W2043880039
- Cited by
- 369
- References
- 0
- FWCI
- 4.02
- Type
- journal article
- Language
- en
- Open access
- closed
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- Trau, M., Saville, D. A., & Aksay, I. A. (1997). Assembly of Colloidal Crystals at Electrode Interfaces. Langmuir. https://doi.org/10.1021/la970568u
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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.
