Engineering “JiaoJiao”(maltose syrup) with chopsticks: From traditional Chinese sweet food to skin-like iontronics  

基于用筷子改造的传统甜食“搅搅糖”(麦芽糖浆)构筑的离子皮肤器件

作　　者：Jiahui Huang Peiyi Wu 黄佳惠;武培怡(State Key Laboratory of Molecular Engineering of Polymers,Department of Macromolecular Science and Laboratory for Advanced Materials,Fudan University,Shanghai 200433,China;State Key Laboratory for Modification of Chemical Fibers and Polymer Materials,College of Chemistry,Chemical Engineering and Biotechnology,Center for Advanced Low-Dimension Materials,Donghua University,Shanghai 201620,China)

机构地区：[1]State Key Laboratory of Molecular Engineering of Polymers,Department of Macromolecular Science and Laboratory for Advanced Materials,Fudan University,Shanghai 200433,China [2]State Key Laboratory for Modification of Chemical Fibers and Polymer Materials,College of Chemistry,Chemical Engineering and Biotechnology,Center for Advanced Low-Dimension Materials,Donghua University,Shanghai 201620,China

出　　处：《Science China Materials》2021年第12期3059-3068,共10页中国科学（材料科学（英文版）

基　　金：supported by the National Natural Science Foundation of China (51733003)。

摘　　要：The advancement of technology has had a profound impact on all areas of life, with an ever more intimate integration of the digital and biological spheres, but it may also be accompanied by an environmental crisis caused by the abuse of large quantities of electronics and petrochemicals.Next-generation "green" electronics or iontronics with high biocompatibility, biodegradation, low cost and mechanical compliance promise to mitigate these adverse effects, but are often limited by the finite choices of materials and strategies.Herein, maltose syrup, a traditional water-dissolvable saccharide food called "JiaoJiao" in Chinese, is engineered to replace unsustainable conductive components of current electronic devices. After churning and pulling with two chopsticks, known as aeration, the aerated maltose syrup has optimized viscoelasticity, mechanical adaptation, robustness,remodeling and self-healing capability, yet with transient behavior. Moreover, the structural and viscoelastic evolution during aeration is also analyzed to maximize the contribution from structures. As a proof-of-concept, a type of "green" skinlike iontronics is prepared, which exhibits reliable strain sensing ability and is subsequently applied for intelligent information encryption and transmission based on a novel concept of sending Morse code. This work greatly extends the current material choice and is expected to shed light on the development of a sustainable future.科技的发展对生活的各个领域都产生了深远的影响,使得数字化领域和生物领域的结合越来越紧密,但同时也可能伴随着电子设备和石化产品的滥用所带来的环境危机.具有高生物相容性、生物降解性、低成本和顺应性的下一代"绿色"电子有望缓解这些不利影响,但往往受限于材料和策略的选择.本工作利用传统甜食"搅搅糖"(麦芽糖浆),使用筷子对其进行结构改造,即所谓的充气,充气后的麦芽糖浆具有独特的黏弹性、力学适应性、可重构性和自修复能力,但又兼具瞬态行为,可以替代当前电子器件中不可回收的导电元件.此外,本文还分析了充气过程中结构和黏弹性的演变.作为概念验证,本文中制备的电容式离子皮肤具有可靠的应变传感能力,可应用于新型的信息加密和传输.这项工作将传统食物与前沿的科学研究相结合,极大地拓展了材料的选择性,有望为未来材料的可持续发展提供新的思路.

关 键 词：green electronics skin-like iontronics sustainable viscoelastic transient electronics 

分 类 号：TS245.5[轻工技术与工程—制糖工程] TP212[轻工技术与工程—食品科学与工程]