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Title: Conformal piezoelectric systems for clinical and experimental characterization of soft tissue biomechanics

Journal Article · · Nature Materials
DOI:https://doi.org/10.1038/nmat4289· OSTI ID:1875110
 [1];  [2];  [1];  [3];  [4];  [1];  [1];  [5];  [5];  [6];  [7];  [1];  [8];  [5];  [9];  [1]
  1. Univ. of Illinois at Urbana-Champaign, IL (United States)
  2. Nanjing Univ. of Aeronautics & Astronautics (China); Northwestern Univ., Evanston, IL (United States)
  3. MC10 Inc., Cambridge, MA (United States)
  4. L’Oreal R&I Incubator, Clark, NJ (United States)
  5. Univ. of Arizona, Tucson, AZ (United States)
  6. TU Dresden (Germany)
  7. Northwestern Univ., Evanston, IL (United States); Tsinghua Univ., Beijing (China)
  8. Academy Dermatologist Group Ltd, Tucson, AZ (United States)
  9. Northwestern Univ., Evanston, IL (United States)

Mechanical assessment of soft biological tissues and organs has broad relevance in clinical diagnosis and treatment of disease. Existing characterization methods are invasive, lack microscale spatial resolution, and are tailored only for specific regions of the body under quasi-static conditions. Here, we develop conformal and piezoelectric devices that enable in vivo measurements of soft tissue viscoelasticity in the near-surface regions of the epidermis. Furthermore, these systems achieve conformal contact with the underlying complex topography and texture of the targeted skin, as well as other organ surfaces, under both quasi-static and dynamic conditions. Experimental and theoretical characterization of the responses of piezoelectric actuator–sensor pairs laminated on a variety of soft biological tissues and organ systems in animal models provide information on the operation of the devices. Studies on human subjects establish the clinical significance of these devices for rapid and non-invasive characterization of skin mechanical properties.

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
OSTI ID:
1875110
Journal Information:
Nature Materials, Vol. 14, Issue 7; ISSN 1476-1122
Publisher:
Springer NatureCopyright Statement
Country of Publication:
United States
Language:
English

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