Sol-gel materials for electro-optical and optically active humidity-sensitive devices

Hydrogel smart windows

“…35 The water adsorption/desorption of this environmentally friendly material is achieved entirely through environmental energy without any external energy supply, which is of great research significance. 108 Moreover, advanced materials that can actively change the luminous flux are of great significance for dynamic control of energy radiation flux or privacy protection. 39,108 When the relative humidity of the air contact with the hydrogel material is different, the scattering efficiency and transmittance of the light will also change, resulting in the transformation of transparent and opaque…”

“…108 Moreover, advanced materials that can actively change the luminous flux are of great significance for dynamic control of energy radiation flux or privacy protection. 39,108 When the relative humidity of the air contact with the hydrogel material is different, the scattering efficiency and transmittance of the light will also change, resulting in the transformation of transparent and opaque…”

“…109 Moreover, advanced materials that can actively change the luminous flux are of great significance for dynamic control of energy radiation flux or privacy protection. 108,110…”

“…8c). 108 Cai et al developed a porous PDMS film that dynamically passes through trace amounts of water (5 gm -2 ) or other solvents. A porous PDMS film with a thickness of about 0.4mm exhibits significant optical modulation (about 75-80%) in the visible and near-infrared region.…”

Novel Green Reversible Humidity-Responsive Hemiaminal Dynamic Covalent Network for Smart Window

“…Switchable and adjustable transparency materials have crucial applications, such as sensors, − bendable medical devices, anticounterfeiting devices, − or smart windows. − With the rapid development of modern materials science, researchers have successfully prepared various kinds of transparent and adjustable materials, the most studied of which are gel materials. At present, most of the investigations on gel materials have been carried out to achieve dynamic switching of transparency in different contexts through thermal, − electrical, , and nature stimuli . Among them, reports mainly focus on the reversible transformation of materials by modifying their transparency through the action of heat and electricity.…”