Kang Han Sol, Han Sang Won, Park Chanho, Lee Seung Won, Eoh Hongkyu, Baek Jonghyeok, Shin Dong-Gap, Park Tae Hyun, Huh June, Lee Hyungsuk, Kim Dae-Eun, Ryu Du Yeol, Thomas Edwin L, Koh Won-Gun, Park Cheolmin
Department of Materials Science and Engineering, Yonsei University, Seoul 03722, Republic of Korea.
Department of Chemical and Biomolecular Engineering, Yonsei University, Seoul 03722, Republic of Korea.
Sci Adv. 2020 Jul 22;6(30):eabb5769. doi: 10.1126/sciadv.abb5769. eCollection 2020 Jul.
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.
开发一种轻量级、低功耗、用户交互式三维（3D）非接触式显示器，在这种显示器中可以检测到人体刺激并以非接触模式同时进行可视化，这引起了人们极大的兴趣。在此，我们展示了一种基于薄固态嵌段共聚物（BCP）光子晶体（PC）的多阶反射结构颜色（SCs）的用户交互式3D非接触式传感显示器。在由交替薄片组成的BCP PC中开发了全可见范围的SCs，其中一层包含化学交联的互穿水凝胶网络。将非挥发性离子液体吸收到互穿网络的区域中，可以通过使用多阶光子反射进一步操纵SCs，从而产生由反射颜色混合引起的前所未有的可见SCs。此外，通过使用吸湿离子液体墨水，创建了一种可打印的3D非接触式交互式显示器，其中人体手指的3D位置根据手指与显示器的距离在不同的SCs中有效地可视化。
