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Selective Janus Particle Assembly at Tipping Points of ThermallySwitched Wetting**
- Author(s)
- Yu, Changqian, Zhang, Jie, Granick, Steve
- Issued Date
- 2014-04
- Citation
- ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, v.53, no.17, pp.4364 - 4367
- Abstract
- Thermal wetting can simply, selectively and reversibly join patchy particles into clusters (2D and 3D) and also colloidal crystals over the narrow temperature range of 1-2 degrees C. This is demonstrated with Janus particles (gold half-coated silica spheres) immersed in a binary mixture of water/2,6-lutidine, such that the relative strength of gold-gold bonding through hydrophobic interaction and silica-silica bonding through the wetting-induced attraction is reversibly switched according to temperature.
- Publisher
- WILEY-V C H VERLAG GMBH
- ISSN
- 1433-7851
- Keyword (Author)
- Janus particle, reconfigurable materials, selective self-assembly, temperature triggers, wetting
- Keyword
- AGGREGATION, CLUSTERS
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