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Customized metallodielectric colloids and their behavior in dielectrophoretic fields

Journal Article · · Soft Matter
DOI:https://doi.org/10.1039/d2sm01099b· OSTI ID:1894024
A synthetic strategy for fabricating colloidal particles with spatially segregated amine-functionalized lobes enables regioselective coating with gold to afford metallodielectric particles with a variety of shapes and lobe sizes. This approach can produce either dissymmetric dumbbell-shaped two-lobed Au-TPM particles (Au-T) or dissymmetric or symmetric three-lobed particles with gold coating on one (Au-T-T and T-Au-T) or two lobes (Au-T-Au). Dielectrophoretic (DEP) forces exerted by an AC field confined between two opposing electrodes generate aggregates ranging from 1D chains to 2D close-packed lattices, depending on the particle shape and lobe arrangement. Furthermore, the aggregate structures reflect the lowest energy configurations resulting from the induced dipole moments created in particle lobes within the confined electric field.
Research Organization:
New York Univ. (NYU), NY (United States)
Sponsoring Organization:
National Science Foundation (NSF); USDOE
Grant/Contract Number:
SC0007991
OSTI ID:
1894024
Alternate ID(s):
OSTI ID: 1891691
Journal Information:
Soft Matter, Journal Name: Soft Matter Journal Issue: 41 Vol. 18; ISSN 1744-683X
Publisher:
Royal Society of ChemistryCopyright Statement
Country of Publication:
United States
Language:
English

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