Ordering of binary colloidal crystals by random potentials

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buir.contributor.authorVelu, Sabareesh K. P.
buir.contributor.authorKasianiuk, Iryna
buir.contributor.authorKasyanyuk, Denis
buir.contributor.authorCallegari, Agnese
buir.contributor.authorVolpe, Giovanni
dc.citation.epage4273en_US
dc.citation.issueNumber17en_US
dc.citation.spage4267en_US
dc.citation.volumeNumber16en_US
dc.contributor.authorNunes, A. S.
dc.contributor.authorVelu, Sabareesh K. P.
dc.contributor.authorKasianiuk, Iryna
dc.contributor.authorKasyanyuk, Denis
dc.contributor.authorCallegari, Agnese
dc.contributor.authorVolpe, G.
dc.contributor.authorTelo da Gama, M. M.
dc.contributor.authorVolpe, Giovanni
dc.contributor.authorAraujo, N. A. M.
dc.date.accessioned2021-03-03T13:24:30Z
dc.date.available2021-03-03T13:24:30Z
dc.date.issued2020
dc.departmentDepartment of Physicsen_US
dc.departmentInstitute of Materials Science and Nanotechnology (UNAM)en_US
dc.description.abstractStructural defects are ubiquitous in condensed matter, and not always a nuisance. For example, they underlie phenomena such as Anderson localization and hyperuniformity, and they are now being exploited to engineer novel materials. Here, we show experimentally that the density of structural defects in a 2D binary colloidal crystal can be engineered with a random potential. We generate the random potential using an optical speckle pattern, whose induced forces act strongly on one species of particles (strong particles) and weakly on the other (weak particles). Thus, the strong particles are more attracted to the randomly distributed local minima of the optical potential, leaving a trail of defects in the crystalline structure of the colloidal crystal. While, as expected, the crystalline ordering initially decreases with an increasing fraction of strong particles, the crystalline order is surprisingly recovered for sufficiently large fractions. We confirm our experimental results with particle-based simulations, which permit us to elucidate how this non-monotonic behavior results from the competition between the particle-potential and particle–particle interactions.en_US
dc.description.provenanceSubmitted by Zeynep Aykut (zeynepay@bilkent.edu.tr) on 2021-03-03T13:24:30Z No. of bitstreams: 1 Ordering_ of_binary_colloidal_crystals_by_random_potentials.pdf: 3695894 bytes, checksum: e36baea50893d54001363e6dd3073698 (MD5)en
dc.description.provenanceMade available in DSpace on 2021-03-03T13:24:30Z (GMT). No. of bitstreams: 1 Ordering_ of_binary_colloidal_crystals_by_random_potentials.pdf: 3695894 bytes, checksum: e36baea50893d54001363e6dd3073698 (MD5) Previous issue date: 2020en
dc.identifier.doi10.1039/d0sm00208aen_US
dc.identifier.issn1744-683X
dc.identifier.urihttp://hdl.handle.net/11693/75732
dc.language.isoEnglishen_US
dc.publisherRoyal Society of Chemistryen_US
dc.relation.isversionofhttps://dx.doi.org/10.1039/d0sm00208aen_US
dc.source.titleSoft Matteren_US
dc.titleOrdering of binary colloidal crystals by random potentialsen_US
dc.typeArticleen_US

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