User-interactive 3D Touchless Sensing Displays with Block Copolymer Self Assembly
발표자
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초록
내용
Self-assembled nanostructures resulting from block copolymers (BCPs) have gained a great attention not only because of the variety of nanostructures they can evolve but also because of the controllability of these structures by stimuli. An emphasis is made on the development of a 3D touchless sensing display based on multi-order reflection structural colors (SCs), solid-state photonic crystal (PC). Full-visible-range SCs are developed in a BCP PC consisting of alternating lamellae, one of which contains a chemically cross-linked, interpenetrated hydrogel network. The absorption of an ionic liquid into the domains of the interpenetrated network allows for further manipulation of SC by utilizing not only 1st-order but also 2nd- and 3rd-order photonic reflections, giving rise to unprecedented visible SCs arising from reflective color mixing. When the ionic liquid is used as an ink for printing via the localized swelling of the domains, various colored, programmed SC images are elaborated.