Precision assembly of oppositely and like-charged nanoobjects mediated by charge-induced dipole interactions.

Walker, David A; Wilmer, Christopher E; Kowalczyk, Bartlomiej; Bishop, Kyle J M; Grzybowski, Bartosz A · Nano Lett · 2010

basic_science · Level V

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Abstract

The range of electrostatic interactions controls precisely the mutual orientations of assembling charged nanoobjects. For nonspherically symmetric particles, polarization effects and induced dipoles can dominate charge-charge interactions. These charge-induced dipole interactions mediate orientation-specific aggregation of both oppositely and like-charged particles.