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Conformable amplified lead zirconate titanate sensors with enhanced piezoelectric response for cutaneous pressure monitoring

Journal Article · · Nature Communications
DOI:https://doi.org/10.1038/ncomms5496· OSTI ID:1875108
 [1];  [2];  [3];  [3];  [3];  [4];  [5];  [3];  [2];  [3];  [6];  [3]
  1. Univ. of Illinois at Urbana-Champaign, IL (United States); University of Illinois
  2. Northwestern Univ., Evanston, IL (United States); Tsinghua Univ., Beijing (China)
  3. Univ. of Illinois at Urbana-Champaign, IL (United States)
  4. Univ. of California, San Diego, La Jolla, CA (United States)
  5. Northwestern Univ., Evanston, IL (United States); Huazhong Univ. of Science and Technology, Wuhan (China)
  6. Northwestern Univ., Evanston, IL (United States)
The ability to measure subtle changes in arterial pressure using devices mounted on the skin can be valuable for monitoring vital signs in emergency care, detecting the early onset of cardiovascular disease and continuously assessing health status. Conventional technologies are well suited for use in traditional clinical settings, but cannot be easily adapted for sustained use during daily activities. Here we introduce a conformal device that avoids these limitations. Ultrathin inorganic piezoelectric and semiconductor materials on elastomer substrates enable amplified, low hysteresis measurements of pressure on the skin, with high levels of sensitivity (~0.005 Pa) and fast response times (~0.1 ms). Experimental and theoretical studies reveal enhanced piezoelectric responses in lead zirconate titanate that follow from integration on soft supports as well as engineering behaviours of the associated devices. As a result, calibrated measurements of pressure variations of blood flow in near-surface arteries demonstrate capabilities for measuring radial artery augmentation index and pulse pressure velocity.
Research Organization:
Univ. of Illinois at Urbana-Champaign, IL (United States)
Sponsoring Organization:
National Science Foundation; USDOE Office of Science (SC), Basic Energy Sciences (BES). Materials Sciences & Engineering Division
Grant/Contract Number:
FG02-07ER46471
OSTI ID:
1875108
Journal Information:
Nature Communications, Journal Name: Nature Communications Journal Issue: 1 Vol. 5; ISSN 2041-1723
Publisher:
Nature Publishing GroupCopyright Statement
Country of Publication:
United States
Language:
English

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