Colloidal spherocylinders at an interface: Flipper dynamics and bilayer formation

T. Li, G. Brandani, D. Marenduzzo, P.S. Clegg

Research output: Contribution to journalArticlepeer-review

Abstract

We study the response of a film of colloidal spherocylinders to compression by combining pressure-area isotherm measurements, microscopy, and computer simulations. We find that the behavior of the film depends strongly on the geometry of the particles. For a small aspect ratio, a uniform monolayer forms and then buckles. For a higher aspect ratio, particles flip to orient perpendicular to the interface; we show that flipping occurs in locations where the nematic ordering is low. Our experiments and simulations further demonstrate that the longest particles rearrange to self-assemble a colloidal bilayer, which is stable due to the unique geometry of spherocylinders at an interface.
Original languageEnglish
Article number018001
Number of pages5
JournalPhysical Review Letters
Volume119
Issue number1
DOIs
Publication statusPublished - 6 Jul 2017

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