期刊
JOURNAL OF MATERIALS CHEMISTRY B
卷 9, 期 23, 页码 4718-4725出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/d1tb00572c
关键词
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资金
- Junior GACR project [18-19170Y]
- UCT Institutional Support of 'Marie Prochazkova' fund
- J. E. Purkyne fellowship
- European Regional Development Fund
- OP RDE
- Project: Chemical biology for drugging undruggable targets (Chem-BioDrug) [CZ.02.1.01/0.0/0.0/16_019/0000729]
- [A1_FCHI_2020_005IG]
- [A1_FCHI_2020_005]
This method involves using different types of microgel platelets to self-assemble into ordered 2D structures with material anisotropy on an inclined plane. Through gravitational pull, the microgel platelets self-orient and form densely packed structures at the bottom of the tilted plane.
We present a method for creating ordered 2D structures with material anisotropy from self-assembling micro-sized hydrogel particles (microgels). Microgel platelets of polygonal shapes (hexagon, square, and rhombus), obtained by a continuous scalable lithographic process, are suspended in an aqueous environment and sediment on an inclined plane. As a consequence of gravitational pull, they slide over the plane. Each half of the microgel is composed of a different type of hydrogel [poly(N-isopropylacrylamide) (PNIPAM), and poly(ethylene glycol) diacrylate (PEGDA), respectively] which exhibit different frictional coefficients when sheared over a substrate. Hence the microgels self-orientate as they slide, and the side with the lower frictional coefficient positions in the direction of sliding. The self-oriented microgels concentrate at the bottom of the tilted plane. Here they form densely packed structures with translational as well as orientational order.
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