Journal
NANOMATERIALS
Volume 7, Issue 10, Pages -Publisher
MDPI
DOI: 10.3390/nano7100291
Keywords
colloidal microspheres; colloidal crystal; monolayer; self-assembly
Categories
Funding
- National Key Scientific Instrument and Equipment Development Project of China [2014YQ090709]
- National Natural Science Foundation of China [51602296, 11174258, 61705204]
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Hexagonally ordered arrays of polystyrene (PS) microspheres were prepared by a modified air-water self-assemblymethod. A detailed analysis of the air-water interface self-assembly process was conducted. Several parameters affect the quality of the monolayer colloidal crystals, i.e., the colloidal microsphere concentration on the latex, the surfactant concentration, the polystyrene microsphere diameter, the microsphere polydispersity, and the degree of sphericity of polystyrene microspheres. An abrupt change in surface tension was used to improve the quality of the monolayer colloidal crystal. Three typical microstructures, i.e., a cone, a pillar, and a binary structure were prepared by reactive-ion etching using a high-quality colloidal crystal mask. This study provides insight into the production of microsphere templates with flexible structures for large-area patterned materials.
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