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Volume 4 Issue 2
Mar.  2022
Article Contents

Chen L, Duan G H, Zhang C, Cheng P, Wang Z L. 2022. 3D printed hydrogel for soft thermo-responsive smart window. Int. J. Extrem. Manuf. 4 025302.
Citation: Chen L, Duan G H, Zhang C, Cheng P, Wang Z L. 2022. 3D printed hydrogel for soft thermo-responsive smart window. Int. J. Extrem. Manuf. 025302.

3D printed hydrogel for soft thermo-responsive smart window


doi: 10.1088/2631-7990/ac5ae3
More Information
  • Publish Date: 2022-03-09
  • Smart windows with tunable optical properties that respond to external environments are being developed to reduce energy consumption in buildings. In the present study, we introduce a new type of 3D printed hydrogel with amazing flexibility and stretchability (as large as 1500%), as well as tunable optical performance controlled by surrounding temperatures. The hydrogel on a PDMS substrate shows transparent-opaque transition with high solar modulation (∆Tsol) up to 79.332% around its lower critical solution temperature (LCST) while maintaining a high luminous transmittance (Tlum) of 85.847% at 20 ◦C. In addition, selective transparent-opaque transition above LCST can be achieved by patterned hydrogels which are precisely fabricated via a projection micro-stereolithography based 3D printing technique. Our hydrogel promises great potential applications for the next generation of soft smart windows.

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3D printed hydrogel for soft thermo-responsive smart window

doi: 10.1088/2631-7990/ac5ae3
  • 1 College of Mechanical and Vehicle Engineering, Hunan University, Changsha 410082, People’s Republic of China;
  • 2 Qian Xuesen Laboratory of Space Technology, China Academy of Space Technology (CAST), Beijing 10094, People’s Republic of China;
  • 3 MOE Key Laboratory for Power Machinery and Engineering, School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai 200240, People’s Republic of China

Abstract: 

Smart windows with tunable optical properties that respond to external environments are being developed to reduce energy consumption in buildings. In the present study, we introduce a new type of 3D printed hydrogel with amazing flexibility and stretchability (as large as 1500%), as well as tunable optical performance controlled by surrounding temperatures. The hydrogel on a PDMS substrate shows transparent-opaque transition with high solar modulation (∆Tsol) up to 79.332% around its lower critical solution temperature (LCST) while maintaining a high luminous transmittance (Tlum) of 85.847% at 20 ◦C. In addition, selective transparent-opaque transition above LCST can be achieved by patterned hydrogels which are precisely fabricated via a projection micro-stereolithography based 3D printing technique. Our hydrogel promises great potential applications for the next generation of soft smart windows.

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