Flexible, Wearable and Fully-printed Smart Patch for pH and Hydration Sensing in Wounds

Mick Iversen, Monisha Monisha, Shweta Agarwala

Article ID: 447
Vol 8, Issue 1, 2022, Article identifier:447

VIEWS - 2906 (Abstract) 515 (PDF) 337 (Supp.File)


Wound healing is a complex and dynamic regeneration process, wherein the physical and chemical parameters are continuously changing. Its management and monitoring can provide immense benefits, especially for bed-ridden patients. This work reports a low-cost, flexible, and fully printed on-skin patch sensor to measure the change in pH and fluid content in a wound. Such a bendable sensor can also be easily incorporated in a wound dressing. The sensor consists of different electrodes printed on polydimethylsiloxane (PDMS) substrate for pH and moisture sensing. The fabricated sensor patch has a sensitivity of 7.1 ohm/pH for wound pH levels. The hydration sensor results showed that moisture levels on a semi-porous surface can be quantified through resistance change.


Smart patch, Wound management, pH sensor, Hydration sensor, Flexible electronics, Printed electronics

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DOI: http://dx.doi.org/10.18063/ijb.v8i1.447


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