Harnessing Dynamic Wrinkling Surfaces for Smart Displays
Harnessing Dynamic Wrinkling Surfaces for Smart Displays
复制标题
利用智能显示器的动态起皱表面
DOI：
10.1021/acs.nanolett.9b05279
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发表时间：
2020-06-10
期刊：
影响因子：
10.8
通讯作者：
Sun, Jun
中科院分区：
文献类型：
--
作者：
Wu, Kai;Sun, Yu;Sun, Jun
响应各种外部刺激的可逆且可切换的褶皱表面具有广泛的潜在应用。在本论文中，我们通过有/无机械预应变的紫外 - 臭氧（UVO）处理，在聚二甲基硅氧烷（PDMS）表面制备出了对溶剂响应的可逆褶皱。基于这种溶剂响应性褶皱，在单一且简单的薄膜 - 基底系统中轻松实现了三种类型的光学透明动力学，包括：（I）具有可控弛豫时间和各向同性光散射的完全可逆透明度；（II）具有各向异性光散射和可调扩散程度的完全可逆透明度；以及（III）不完全可逆透明度。通过调整溶剂类型、UVO 曝光时间和机械预应变，可以控制褶皱的可逆性和稳定性。这三种褶皱动力学的潜在机制已得到清晰阐释。这种极其简单的材料体系以及简便而高效的技术，为实现智能显示器的多功能光学动力学开辟了一条新途径。
Reversible and switchable wrinkling surfaces in response to various external stimuli have extensive potential applications. In this Letter, we prepared the reversible wrinkling on poly(dimethylsiloxane (PDMS) surfaces, responsive to the solvents, by ultraviolet-ozone (UVO) treatment with/without mechanical prestrain. Based on the solvent-responsive wrinkling, three types of optical transparency dynamics were achieved easily in a single and simple film-substrate system, including (I) completely reversible transparency with controlled relaxation time and isotropic light scattering; (II) completely reversible transparency with anisotropic light scattering and tunable diffusion degree; and (III) incompletely reversible transparency. The reversibility and stability of wrinkles can be controlled by tailoring the solvent type, UVO exposure time, and mechanical prestrain. The underlying mechanisms for the three wrinkling dynamics have been clearly elucidated. The extremely simple material system and the facile but efficient technique pave a novel way for realizing versatile optical dynamics for smart displays.