Publication Date:
2018-11-02
Description:
Author(s): Seung Yeol Lee, Hyoungsoo Kim, Shin-Hyun Kim, and Howard A. Stone Colloidal nanostructures that are not iridescent could find use in ink-jet printing, reflective displays, or other optical technologies, but producing noniridescent structures involves complicated chemical methods, and control of the thickness of the colloidal structure is limited. Here a simple, robust, p h y s i c a l method yields a uniformly thick photonic film, by suppressing “coffee ring” patterns with the Marangoni effect from fluid dynamics. Noniridescence is achieved by depletion attraction and the friction effect of polymer brushes, leading to short-range-ordered packing of colloidal nanoparticles. This method could be used in many printing and light-filtering applications. [Phys. Rev. Applied 10, 054003] Published Thu Nov 01, 2018
Electronic ISSN:
2331-7019
Topics:
Physics
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