By Topic

Bioinspired, uncooled chitin photomechanical sensor for thermal infrared sensing

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$31 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

4 Author(s)
Nuo Zhang ; Berkeley Sensor & Actuator Center, Univ. of California, Berkeley, CA, USA ; Cheng, J.C. ; Warren, C.G. ; Pisano, A.P.

We have designed and fabricated a novel, polymer-ceramic bimorph infrared (IR) sensing element for uncooled operations. The developed sensors utilize biopolymer chitin on ceramic beams, which deflect with changing temperature due to the mismatch in thermal expansion coefficients of the two materials. This is the first known instance of a polysaccharide-based material used in the development of IR sensors. To maximize the bi-material bending effect, a thin layer of chitin is deposited onto a stiff layer of polysilicon. As in nature, chitin makes an ideal absorbing layer for the sensors because of its high thermal expansion coefficient and natural vibrational resonances in the IR range. Experiments using finite element analysis (FEA) simulation showed that the sensitivity of the polymer-ceramic bimorph sensor was 50 times of the sensitivity of the commonly-used metal-ceramic bimorph sensor. The proposed device offers high sensitivity and significant cost savings compared to existing competitive technologies.

Published in:

Sensors, 2011 IEEE

Date of Conference:

28-31 Oct. 2011