Authors: Cunjiang Yu; Yuhang Li; Xun Zhang; Xian Huang; Viktor Malyarchuk; Shuodao Wang; Yan Shi; Li Gao; Yewang Su; Yihui Zhang; Hangxun Xu; Roger T Hanlon; Yonggang Huang; John A Rogers Journal: Proc Natl Acad Sci U S A Date: 2014-08-18 Impact factor: 11.205