文献类型：期刊文献

英文题名：Epidermal photonic devices for quantitative imaging of temperature and thermal transport characteristics of the skin

作者：Gao, Li[1];Zhang, Yihui[2,3,4];Malyarchuk, Viktor[1];Jia, Lin[1];Jang, Kyung-In[1];Webb, R. Chad[1];Fu, Haoran[2,3,5];Shi, Yan[2,3,6];Zhou, Guoyan[2,3,7];Shi, Luke[1];Shah, Deesha[1];Huang, Xian[1];Xu, Baoxing[1];Yu, Cunjiang[8,9];Huang, Yonggang[2,3];Rogers, John A.[1]

机构：[1]Univ Illinois, Beckman Inst, Dept Mat Sci & Engn, Frederick Seitz Mat Res Lab, Urbana, IL 61801 USA;[2]Northwestern Univ, Skin Dis Res Ctr, Ctr Engn & Hlth, Dept Civil & Environm Engn, Evanston, IL 60208 USA;[3]Northwestern Univ, Skin Dis Res Ctr, Ctr Engn & Hlth, Dept Mech Engn, Evanston, IL 60208 USA;[4]Tsinghua Univ, Ctr Mech & Mat, Beijing 100084, Peoples R China;[5]Zhejiang Univ, Dept Civil Engn & Architecture, Hangzhou 310058, Zhejiang, Peoples R China;[6]Nanjing Univ Aeronaut & Astronaut, State Key Lab Mech & Control Mech Struct, Nanjing 210016, Peoples R China;[7]E China Univ Sci & Technol, Sch Mech & Power Engn, Key Lab Pressure Syst & Safety MOE, Shanghai 200237, Peoples R China;[8]Univ Houston, Dept Mech Engn, Houston, TX 77204 USA;[9]Univ Houston, Dept Elect & Comp Engn, Houston, TX 77204 USA

年份：2014

卷号：5

外文期刊名：NATURE COMMUNICATIONS

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000342984700006)】；

基金：This study was supported by the Materials Research Laboratory and Center for Microanalysis of Materials at the University of Illinois at Urbana-Champaign. J.A.R. acknowledges financial support through a National Security Science and Engineering Faculty Fellowship. The work was supported by the Office of Naval Research under Grant N00014-10-1-0989.

语种：英文

摘要：Characterization of temperature and thermal transport properties of the skin can yield important information of relevance to both clinical medicine and basic research in skin physiology. Here we introduce an ultrathin, compliant skin-like, or 'epidermal', photonic device that combines colorimetric temperature indicators with wireless stretchable electronics for thermal measurements when softly laminated on the skin surface. The sensors exploit thermochromic liquid crystals patterned into large-scale, pixelated arrays on thin elastomeric substrates; the electronics provide means for controlled, local heating by radio frequency signals. Algorithms for extracting patterns of colour recorded from these devices with a digital camera and computational tools for relating the results to underlying thermal processes near the skin surface lend quantitative value to the resulting data. Application examples include non-invasive spatial mapping of skin temperature with milli-Kelvin precision (+/- 50 mK) and sub-millimetre spatial resolution. Demonstrations in reactive hyperaemia assessments of blood flow and hydration analysis establish relevance to cardiovascular health and skin care, respectively.