期刊
ADVANCED FUNCTIONAL MATERIALS
卷 20, 期 18, 页码 3085-3091出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adfm.201000134
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资金
- National Science Foundation [DMR-0547976, ECS-0335765]
The self-assembly of polystyrene dimer- and spherocylinder-shaped colloids is achieved via controlled drying on glass and silicon substrates. 3D monoclinic colloidal crystal structures are determined from scanning electron microscopy images of sections prepared using focused ion-beam (FIB) milling. Full photonic bandgaps between the eighth and ninth bands are found for a systematic range of colloidal dimer shapes explored with respect to the degree of constituent lobe fusion and radius ratio. The pseudogap between bands 2 and 3 for spherocylinder-based monoclinic crystals is also probed using normal incidence reflection spectroscopy.
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