Jung Yei Hwan, Chang Tzu-Hsuan, Zhang Huilong, Yao Chunhua, Zheng Qifeng, Yang Vina W, Mi Hongyi, Kim Munho, Cho Sang June, Park Dong-Wook, Jiang Hao, Lee Juhwan, Qiu Yijie, Zhou Weidong, Cai Zhiyong, Gong Shaoqin, Ma Zhenqiang
Department of Electrical and Computer Engineering, University of Wisconsin-Madison, 1415 Engineering Drive, 3445 Engineering Hall, Madison, Wisconsin 53706, USA.
Department of Material Sciences and Engineering, University of Wisconsin-Madison, Madison, Wisconsin 53706, USA.
Nat Commun. 2015 May 26;6:7170. doi: 10.1038/ncomms8170.
Today's consumer electronics, such as cell phones, tablets and other portable electronic devices, are typically made of non-renewable, non-biodegradable, and sometimes potentially toxic (for example, gallium arsenide) materials. These consumer electronics are frequently upgraded or discarded, leading to serious environmental contamination. Thus, electronic systems consisting of renewable and biodegradable materials and minimal amount of potentially toxic materials are desirable. Here we report high-performance flexible microwave and digital electronics that consume the smallest amount of potentially toxic materials on biobased, biodegradable and flexible cellulose nanofibril papers. Furthermore, we demonstrate gallium arsenide microwave devices, the consumer wireless workhorse, in a transferrable thin-film form. Successful fabrication of key electrical components on the flexible cellulose nanofibril paper with comparable performance to their rigid counterparts and clear demonstration of fungal biodegradation of the cellulose-nanofibril-based electronics suggest that it is feasible to fabricate high-performance flexible electronics using ecofriendly materials.
如今的消费电子产品,如手机、平板电脑和其他便携式电子设备,通常由不可再生、不可生物降解且有时可能有毒(例如砷化镓)的材料制成。这些消费电子产品经常被升级或丢弃,导致严重的环境污染。因此,由可再生、可生物降解且潜在有毒材料用量最少的材料组成的电子系统是很有必要的。在此,我们报告了高性能柔性微波和数字电子产品,它们在基于生物基、可生物降解且柔性的纤维素纳米纤维纸上使用的潜在有毒材料量最少。此外,我们展示了以可转移薄膜形式存在的砷化镓微波器件,这是消费无线领域的主力器件。在柔性纤维素纳米纤维纸上成功制造出关键电气元件,其性能与刚性对应元件相当,并且清楚地证明了基于纤维素纳米纤维的电子产品可被真菌生物降解,这表明使用环保材料制造高性能柔性电子产品是可行的。