Journal
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
Volume 197, Issue -, Pages -Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ijheatmasstransfer.2022.123328
Keywords
Conformal sensor-based harmonic wave technique; Skin water content; Skin thermal conductivity measurement
Categories
Funding
- Beijing Nova Pro-gram [Z20110 0 0 06820 065]
- National Natural Science Foundation of China [51876008]
- Beijing Natural Science Foundation [3202020]
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A conformal sensor-based harmonic wave technique has been developed to measure the water content in both epidermis and dermis, providing a more accurate method for diagnosing skin health status.
The thermal conductivity of human skin reflects the water content of skin, and thus is a strong indicator of skin health status. The current diagnosis methods for human skin can only detect the water content in a small depth beneath the skin surface, typically within the stratum corneum layer (10-20 mu m), which fails to extract the water content in larger depth such as dermis, thereby limiting the timely diagnosis of some severe skin diseases (psoriasis, dry skin, skin eczema, etc.). Here we developed a conformal sensor-based harmonic wave technique which can modulate the thermal wave penetration depth and thus measure the water content in both epidermis and dermis. Variations in water content for three factors (age, site and BMI index) of different subjects were discussed. The progress made so far provides a useful approach for monitoring the water content of human skin and early warning of skin diseases.(c) 2022 Elsevier Ltd. All rights reserved.
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