Customized metallodielectric colloids and their behavior in dielectrophoretic fields

Fangyuan Dong, Samira Munkaila, Veronica Grebe, Marcus Weck, Michael D. Ward

Research output: Contribution to journalArticlepeer-review


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. The aggregate structures reflect the lowest energy configurations resulting from the induced dipole moments created in particle lobes within the confined electric field.

Original languageEnglish (US)
Pages (from-to)7975-7980
Number of pages6
JournalSoft Matter
Issue number41
StatePublished - Oct 11 2022

ASJC Scopus subject areas

  • General Chemistry
  • Condensed Matter Physics


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