Fully Printed Flexible Smart Hybrid Hydrogels |
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| Authors: | Yang Zhou Michael Layani Shancheng Wang Peng Hu Yujie Ke Shlomo Magdassi Yi Long |
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| Affiliation: | 1. School of Materials Science and Engineering, Nanyang Technological University, Singapore;2. Casali Center for Applied Chemistry, Institute of Chemistry, The Center for Nanoscience and Nanotechnology, The Hebrew University of Jerusalem, Jerusalem, Israel |
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| Abstract: | A printable hybrid hydrogel is fabricated by embedding poly(N‐isopropylacrylamide) (PNIPAm) microparticles within a water‐rich silica‐alumina(Si/Al)‐based gel matrix. The hybrid gel holds water content of up to 70 wt%, due to its unique Si/Al matrix. The hybrid hydrogel can respond to both heat and electrical stimuli, and can be directly printed layer‐by‐layer using a commercial 3‐dimensional printer, without requiring any curing. The hybrid ink is printed onto a transparent, flexible conductive electrode composed of silver nanoparticles and sustains bending angles of up to 180°, which enables patterning of various flexible devices such as smart windows and a 3D optical waveguide valve. |
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| Keywords: | 3D printing hydrogels PNIPAm smart windows thermochromics |
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