Hexadecapolar colloids

Bohdan Senyuk, Owen Puls, Oleh M. Tovkach, Stanislav B. Chernyshuk and Ivan I. Smalyukh ()
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Bohdan Senyuk: University of Colorado
Owen Puls: University of Colorado
Oleh M. Tovkach: Bogolyubov Institute for Theoretical Physics, NAS of Ukraine
Stanislav B. Chernyshuk: Institute of Physics, NAS of Ukraine
Ivan I. Smalyukh: University of Colorado

Nature Communications, 2016, vol. 7, issue 1, 1-7

Abstract: Abstract Outermost occupied electron shells of chemical elements can have symmetries resembling that of monopoles, dipoles, quadrupoles and octupoles corresponding to filled s-, p-, d- and f-orbitals. Theoretically, elements with hexadecapolar outer shells could also exist, but none of the known elements have filled g-orbitals. On the other hand, the research paradigm of ‘colloidal atoms’ displays complexity of particle behaviour exceeding that of atomic counterparts, which is driven by DNA functionalization, geometric shape and topology and weak external stimuli. Here we describe elastic hexadecapoles formed by polymer microspheres dispersed in a liquid crystal, a nematic fluid of orientationally ordered molecular rods. Because of conically degenerate boundary conditions, the solid microspheres locally perturb the alignment of the nematic host, inducing hexadecapolar distortions that drive anisotropic colloidal interactions. We uncover physical underpinnings of formation of colloidal elastic hexadecapoles and describe the ensuing bonding inaccessible to elastic dipoles, quadrupoles and other nematic colloids studied previously.

Date: 2016
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Persistent link: https://EconPapers.repec.org/RePEc:nat:natcom:v:7:y:2016:i:1:d:10.1038_ncomms10659

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DOI: 10.1038/ncomms10659

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