Ultra-Robust Joule-Heated Superhydrophobic Smart Window: Dually-Switching Droplets Adhesion and Transparency via In Situ Electric-Actuated Reconfigurable Shape-Memory Shutters

Chao Chen; Hao Yao; Sijia GuoZhaoxin LaoYudong XuShuyi Liand Sizhu Wu

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Ultra-Robust Joule-Heated Superhydrophobic Smart Window: Dually-Switching Droplets Adhesion and Transparency via In Situ Electric-Actuated Reconfigurable Shape-Memory Shutters

机译：Ultra-Robust Joule-Heated Superhydrophobic Smart Window: Dually-Switching Droplets Adhesion and Transparency via In Situ Electric-Actuated Reconfigurable Shape-Memory Shutters

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Slippery liquid-impregnated porous surfaces (SLIPS) based smart windows(SWs) that dynamically fine-tune the solar energy gain are promisingcandidates for alleviating the global energy crisis, especially for dim rainyclimates. Unfortunately, the inferior durability arising from viscous dissipationover SLIPS-based SWs remains a great challenge that needs tobe addressed. Here, an ultra-robust all-solid-state superhydrophobic SWis reported namely electric-actuated reconfigurable shape memory shutter(EA-RSMS) via a hybrid approach of laser ablation and soft transfer.Thanks to electrothermal effect of underlying silver nanowires heater,EA-RSMS can be dynamically glazing by switching the surface shuttersbetween bent mode (the transmittance of 10.8%) and erect one (the transmittanceof 56.6%) within 60 s in situ. Synergistically, EA-RSMS motivatesthe reversible transition between sticky state (sliding angle of 24°)and slippery one (sliding angle of 8°) by alternate Joule-heating/pressingoperation. Fundamental physics renders to clarify the effect of shutterstopography on the hysteresis and light performance. Last but not the least,by utilizing the optimized EA-RSMS shelter, indoor thermal-comfort regulation,visibility encoding together with angle-variable display are deployed.Current superhydrophobic EA-RSMS with robust durability, novel tuningmodulation, fast electric-sensitivity, and optical angle-dependence holdspromising potential in self-cleaning smart windows, energy-saving buildings,anti-voyeurism, etc.

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《Advanced functional materials》 |2023年第3期|2210495.1-2210495.10|共10页
作者
Chao Chen; Hao Yao; Sijia GuoZhaoxin LaoYudong XuShuyi Liand Sizhu Wu;
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Department of Materials Physics and New Energy DeviceSchool of Materials Science and EngineeringHefei University of TechnologyHefei 230009, China;

School of Instrument Science and Opto-Electronics EngineeringHefei University of TechnologyHefei 230009, China;

The Key Laboratory of Bionic Engineering (Ministry of Education)Jilin UniversityChangchun 130012, China;

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femtosecond laser; in situ controllable adhesion; shape-memory microshutters; silver nanowires thin-film heaters; switchable transparency;

Ultra-Robust Joule-Heated Superhydrophobic Smart Window: Dually-Switching Droplets Adhesion and Transparency via In Situ Electric-Actuated Reconfigurable Shape-Memory Shutters

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