Epidermal Impedance Sensing Sheets for Precision Hydration Assessment and Spatial Mapping

Huang, Xian; Cheng, Huanyu; Chen, Kaile; Zhang, Yilin; Zhang, Yihui; Liu, Yuhao; Zhu, Chenqi; Ouyang, Shao-chi; Kong, Gil-Woo; Yu, Cunjiang; Huang, Yonggang; Rogers, John A.

doi:10.1109/tbme.2013.2264879

Title: Epidermal Impedance Sensing Sheets for Precision Hydration Assessment and Spatial Mapping

Journal Article · Fri May 31 00:00:00 EDT 2013 · IEEE Transactions on Bio-Medical Engineering

DOI:https://doi.org/10.1109/tbme.2013.2264879· OSTI ID:1875152

Huang, Xian ^[1]; Cheng, Huanyu ^[2]; Chen, Kaile ^[1]; Zhang, Yilin ^[1]; Zhang, Yihui ^[2]; Liu, Yuhao ^[1]; Zhu, Chenqi ^[1]; Ouyang, Shao-chi ^[1]; Kong, Gil-Woo ^[1]; Yu, Cunjiang ^[1]; Huang, Yonggang ^[2]; Rogers, John A. ^[1]

Univ. of Illinois at Urbana-Champaign, IL (United States)
Northwestern Univ., Evanston, IL (United States)

This paper presents a class of hydration monitor that uses ultrathin, stretchable sheets with arrays of embedded impedance sensors for precise measurement and spatially multiplexed mapping. The devices contain miniaturized capacitive electrodes arranged in a matrix format, capable of integration with skin in a conformal, intimate manner due to the overall skin-like physical properties. These “epidermal” systems noninvasively quantify regional variations in skin hydration, at uniform or variable skin depths. Experimental results demonstrate that the devices possess excellent uniformity, with favorable precision and accuracy. Theoretical models capture the underlying physics of the measurement and enable quantitative interpretation of the experimental results. Furthermore, these devices are appealing for applications ranging from skin care and dermatology, to cosmetology and health/wellness monitoring, with the additional potential for combined use with other classes of sensors for comprehensive, quantitative physiological assessment via the skin.

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Research Organization:: Univ. of Illinois at Urbana-Champaign, IL (United States)

Sponsoring Organization:: USDOE Office of Science (SC), Basic Energy Sciences (BES). Materials Sciences & Engineering Division

Grant/Contract Number:: FG02-07ER46471; FG02-07ER46453

OSTI ID:: 1875152

Journal Information:: IEEE Transactions on Bio-Medical Engineering, Vol. 60, Issue 10; ISSN 0018-9294

Publisher:: IEEECopyright Statement

Country of Publication:: United States

Language:: English

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