Session 25: Emerging Capabilities
Highly Near-Infrared-Sensitive, Printed Flexible Thermistors
Thursday, June 22, 2017
2:00 PM - 2:25 PM
Near-Infrared (IR) sensitive thermistors were prepared using fully printed carbon-based resistive-type thermistors and encapsulating them with an IR-absorbing coating. The sensors were found to be sensitive to an IR (peak) wavelength range from of 2.7 micrometers to 9.0 micrometers, and were able to detect a blackbody IR radiance of as low as 0.195 W/cm*2/steradian up to 10 cm away from the blackbody source. The near-IR sensitive thermistors were found to have a temperature coefficient of resistance of 4000 ppm/C and rise time of < 250 ms. All sensors tested were hermetically sealed to achieve IR/temperature selectivity over other environmental entities such as moisture, O2, CO2, volatile organic compound (VOC) vapors, etc. In addition, the sensors are were printed on a thermally stable flexible substrate to make them operable at high ambient temperature. The mechanism of operation and potential applications will be discussed.
Austin Shearin is a Research Associate at Brewer Science. He has worked with Brewer Science since May of 2016. He is currently a member of the Emerging Technology Advancement group where his priority focus is on printed electronics and sensor research and development. Austin completed his Master’s Degree in Materials Science at Missouri State University. His education was primarily focused on semiconductor materials in the fields of nano-bio interactions and solar energy applications. He has presented at multiple conferences including Materials Research Society, American Physical Society, Argonne National Laboratory Research Symposium, and Nanofrontiers. He has co-authored papers published in Journal of Physical Chemistry C and Physical Chemistry Chemical Physics.