Journal
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
Volume 57, Issue 49, Pages 16126-16130Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201810728
Keywords
capillary assembly; confinement; dewetting; patterns; size-sorting
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Funding
- National Key R&D Program of China [2018YFA020850, 2016YFB0401603, 2016YFC1100502, 2016YFB0401100]
- National Nature Science Foundation [51773206, 51473173, 11572335]
- Strategic Priority Research Program of the Chinese Academy of Sciences [XDA09020000, XDB22040403]
- CAS Key Research Program of Frontier Sciences [QYZDB-SSW-JSC036]
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Selective and deterministic assembly of particles is fundamentally significant for manufacturing functional devices. However, it is still a challenge to precisely and facilely manipulate particles of different sizes into different assembly patterns. Herein, a method is presented to achieve precise control over the formation of binary or ternary particle size-sorted assemblies. We investigate the assembly process of particles by capillary confinement and show that different size-sorted assemblies of multiple components can be realized by tuning the templated dewetting. By controlling the dewetting direction, receding contact angle, and pillar height of the template, assembly of dual-ring patterns, comet structures, and patterns with component separation are regulated. These structures can be further diversified by tuning the composition of the particles. This approach is general for particle assemblies of different sizes and materials, which will be significant for the fabrication of printed micro/nanohybrid devices.
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