A Fully Self-Powered Cholesteric Smart Window Actuated by Droplet-Based Electricity Generator

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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Detail(s)

Original languageEnglish
Article number2102274
Journal / PublicationAdvanced Optical Materials
Volume10
Issue number7
Online published11 Feb 2022
Publication statusPublished - 4 Apr 2022

Abstract

Self-powered smart windows are highly attractive for the development of energy-efficient buildings system, owing to their superior capacities in regulating the energy and information exchange between indoor and outdoor environments. Although immense achievement has been made in the self-powered cholesteric liquid crystal smart window (CLC-SW) based on triboelectric nanogenerators (TENGs), such a self-powered manner is limited by some challenges such as the need of the continuous input of external forces, as well as unstable performance owing to inevitable mechanical abrasion of TENGs surface. Here, a fully self-powered CLC-SW is developed by leveraging droplet-based electricity generator (DEG) as a spontaneous and sustained energy reservoir, in which DEG has superior capacities to harvest ceaseless energy from ambient environment and circumvent any additional electrical power input. It is demonstrated that DEG-driven CLC-SW exhibits a rapid response and high tunability in the transformation between the transparent state and the hazy state in a wide range of solar spectrum. Moreover, both the transparent and hazy modes can be self-sustained for a long time, also be reversibly switched by the gentle mechanical pressure loading. The DEG-driven smart window developed in this work can find applications such as indoor temperature modulation and privacy information protection.

Research Area(s)

  • cholesteric liquid crystals, droplet-based electricity generator, smart windows

Citation Format(s)

A Fully Self-Powered Cholesteric Smart Window Actuated by Droplet-Based Electricity Generator. / Li, Yuchao; Wang, Mingmei; Zhang, Chao; Wang, Chun-Chuan; Xu, Wanghuai; Gao, Shouwei; Zhou, Yongsen; Wang, Chun-Ta; Wang, Zuankai.

In: Advanced Optical Materials, Vol. 10, No. 7, 2102274, 04.04.2022.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review