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Title: Topological Nanocolloids with Facile Electric Switching of Plasmonic Properties

Combining topology and plasmonics paradigms in nanocolloidal systems may enable new means of pre-engineering desired composite material properties. Here we design and realize orientationally ordered assemblies of noble metal nanoparticles with genus-one topology and unusual long-range ordering mediated by their interactions with the surrounding nematic fluid host. Facile electric switching of these composites is reminiscent of that of pristine liquid crystals (LCs), but provides a means of reconfiguring the nanoparticle assembly and thus also the ensuing composite medium's optical properties. Our findings may lead to formation of new molecular-colloidal soft matter phases with unusual optical properties, as well as optical metamaterials.
Publication Date:
OSTI Identifier:
Report Number(s):
Journal ID: ISSN 0146-9592
DOE Contract Number:
Resource Type:
Journal Article
Resource Relation:
Journal Name: Optics Letters; Journal Volume: 40; Journal Issue: 23
Optical Society of America (OSA)
Research Org:
National Renewable Energy Lab. (NREL), Golden, CO (United States)
Sponsoring Org:
National Science Foundation (NSF)
Country of Publication:
United States
14 SOLAR ENERGY; 77 NANOSCIENCE AND NANOTECHNOLOGY; liquid crystals; plasmonics