A FULLY PRINTED AND PHOTONIC SINTERING DERIVED SILVER- NANOPARTICLE-BASED WEARABLE STRAIN SENSORS

Open Access
Author:
Wang, Tianqi
Graduate Program:
Engineering Science and Mechanics
Degree:
Master of Science
Document Type:
Master Thesis
Date of Defense:
July 01, 2018
Committee Members:
  • Huanyu Cheng, Thesis Advisor
  • Jian Hsu, Committee Member
  • Judith A. Todd , Committee Member
Keywords:
  • AgNPs-PDMS based strain gauges; DIW technology; IPL sintering
Abstract:
Traditional strain sensors are widely used in measure systems due to their extraordinary precision and stability; however, their large size and rigidness limit their application in flexible and wearable sensors. New crack-based strain sensors are often fabricated on soft polymer substrates, which enables the easy integration in epidermal electronics for real-time monitoring. In this paper, the low-cost, wearable strain sensors based on silver nanoparticles (AgNPs) inks on Polydimethylsiloxane (PDMS) is designed and manufactured using a commercial Direct Ink Writing (DIW) system in the lab. We expanded the currently narrow measure range of crack-based strain sensors by incorporating serpentine and wavy connections. It could be applied in electronic skins and devices that could be attached to clothing or directly onto the body for motion detection as well as further health monitoring systems.