Dynamics of Electrically Driven Cholesteric Liquid Crystals by Triboelectrification and Their Application in Self-Powered Information Securing and Vision Correcting
Source abstract
Abstract
Smart glass technology is rapidly evolving and finding significant application in light selectivity devices. However, a major disadvantage of such devices is their high energy requirement which hinders the commercialization progress. In this work, a self-powered optical switch is developed based on the electrochromic effect induced by a vertical contact-separation triboelectric nanogenerator (VCS-TENG) in a cholesteric liquid crystal (CLC) display. The voltage produced by the VCS-TENG causes the CLC display to transition across different physical states, viz., planar, focal conic, and homeotropic, which correspond to varying opacities and applications. Light penetration testing showed that the proposed CLC achieved a shading rate as high as 80%. Moreover, our device demonstrated high durability of up to 500 cycles. Most of all, the novel device successfully implemented reliable performance in important applications that have been demonstrated in this work, including webcam and cellphone security, and occlusion therapy devices in ophthalmology.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Advanced Sensor and Energy Harvesting Materials · Conducting polymers and applications · Tactile and Sensory Interactions
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Institute of Biomedical Engineering, Department of Power Mechanical Engineering and Frontier Research Center on Fundamental and Applied Sciences of Matters, National Tsing Hua University, Hsinchu 30013, Taiwan
Institute of Biomedical Optomechatronics, International PhD Program in Biomedical Engineering, Taipei Medical University and Cell Physiology and Molecular Image Research Center, Taipei Medical University, Taipei 110, Taiwan
Department of Mechanical Engineering (Integrated Engineering Program), Kyung Hee University, Yongin 17104, South Korea
School of Industrial Engineering, Purdue University, West Lafayette, Indiana 47907, United States
Department of Mechanical Engineering, Sungkyunkwan University, Suwon 16419, South Korea
Funding
Ministry of Education · National Tsing Hua University · Ministry of Science and Technology, Taiwan
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