4D Printing of a Digital Shape Memory Polymer with Tunable High Performance

ACS Applied Materials & Interfaces
Yue ZhangTao Xie

Abstract

Shape memory polymers (SMP) with 3D geometries and tunable shape-shifting behavior can open up new opportunities in intelligent devices. Achieving both simultaneously is difficult for conventional approaches. 4D printing allows fabrication of complex 3D SMP geometries that can change shapes (i.e., the fourth dimension is time), but tuning the shape memory response is challenging because of the printing constraints. Here, we report a material and process concept that allows digital light fabrication of SMP with fine control of not only the geometries but also the shape memory characteristics, within a printing time of 30 s. Digital light modulation allows spatio-temporal tuning of the material properties including shape memory transition temperature, rubbery modulus, and maximum elongation (up to 250%). Consequently, the process allows producing multiple-SMP within a single material construct using the same printing precursor. We demonstrate that this unique attribute is beneficial in constructing unusual shape-shifting 3D nano-photonic and electronic devices. The simplicity and versatility of our approach facilitates its future expansion into a wide range of geometrically complex devices with advanced functions.

References

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Jun 18, 2015·ACS Applied Materials & Interfaces·Cary A TippetsRene Lopez
Sep 25, 2015·Advanced Materials·Matt ZarekShlomo Magdassi
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Citations

Nov 16, 2019·Polymers·Ming-You ShieYi-Wen Chen
Nov 10, 2020·Advanced Materials·Ela Sachyani KenethShlomo Magdassi
Dec 29, 2020·ACS Applied Materials & Interfaces·Maciej PodgórskiChristopher N Bowman
Dec 29, 2020·ACS Applied Materials & Interfaces·Hongzhi WuYusheng Shi
Jan 7, 2021·ACS Applied Materials & Interfaces·Yue WangLijie Grace Zhang
May 1, 2021·Polymers·Li JingchengRituparna Ghosh
May 12, 2021·ACS Applied Materials & Interfaces·Zijun WangShengqiang Cai
Jan 7, 2020·ACS Applied Materials & Interfaces·Wenxin FanKunyan Sui
Nov 7, 2019·ACS Applied Materials & Interfaces·Chun ZhangYue Zhao
Sep 30, 2020·ACS Applied Materials & Interfaces·Fenghua ZhangStoyan K Smoukov

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