3D touchless multiorder reflection structural color sensing display
Top Cited Papers
Open Access
- 24 July 2020
- journal article
- research article
- Published by American Association for the Advancement of Science (AAAS) in Science Advances
- Vol. 6 (30), eabb5769
- https://doi.org/10.1126/sciadv.abb5769
Abstract
The development of a lightweight, low-power, user-interactive three-dimensional (3D) touchless display in which a human stimulus can be detected and simultaneously visualized in noncontact mode is of great interest. Here, we present a user-interactive 3D touchless sensing display based on multiorder reflection structural colors (SCs) of a thin, solid-state block copolymer (BCP) 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 a nonvolatile ionic liquid into the domains of the interpenetrated network allows for further manipulation of SC by using multiple-order photonic reflections, giving rise to unprecedented visible SCs arising from reflective color mixing. Furthermore, by using a hygroscopic ionic liquid ink, a printable 3D touchless interactive display is created where 3D position of a human finger is efficiently visualized in different SCs as a function of finger-to-display distance.Funding Information
- Korea Institute of Science and Technology (2Z05900-19-P096)
- National Research Foundation of Korea (2017R1A2A1A05001160)
- National Research Foundation of Korea (2017M3D1A1039289)
- National Research Foundation of Korea (2018M3D1A1058536)
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