Colloidal assembly in droplets: structures and optical properties

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Colloidal assembly in emulsion drops provides fundamental tools for studying optimum particle arrangement under spherical confinement and practical means for producing photonic microparticles. Recent progress has revealed that energetically favored cluster configurations are different from conventional supraballs, which could enhance optical performance. This paper reviews state-of-the-art emulsion-templated colloidal clusters, and particularly focuses on recently reported novel structures such as icosahedral, decahedral, and single-crystalline face-centered cubic (fcc) clusters. We classify the clusters according to the number of component particles as small (N<O(10(2))), medium (O(10(2)) <= N <= O(10(4))), and large (N >= O(10(5))). For each size of clusters, we discuss the detailed structures, mechanisms of cluster formation, and optical properties and potential applications. Finally, we outline current challenges and questions that require further investigation.
Publisher
ROYAL SOC CHEMISTRY
Issue Date
2020-09
Language
English
Article Type
Review
Citation

NANOSCALE, v.12, no.36, pp.18576 - 18594

ISSN
2040-3364
DOI
10.1039/d0nr04608f
URI
http://hdl.handle.net/10203/276557
Appears in Collection
CBE-Journal Papers(저널논문)
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