Next Article in Journal
Measuring Relative-Story Displacement and Local Inclination Angle Using Multiple Position-Sensitive Detectors
Previous Article in Journal
Remote Sensing of Ecology, Biodiversity and Conservation: A Review from the Perspective of Remote Sensing Specialists
Open AccessArticle

An Analytical Model of Joule Heating in Piezoresistive Microcantilevers

Department of Mechanical Engineering, Inha University, 253 Yonghyun-dong, Nam-Ku, Incheon, 402-751, Korea
*
Author to whom correspondence should be addressed.
Sensors 2010, 10(11), 9668-9686; https://doi.org/10.3390/s101109668
Received: 6 September 2010 / Revised: 27 September 2010 / Accepted: 9 October 2010 / Published: 1 November 2010
(This article belongs to the Section Biosensors)
The present study investigates Joule heating in piezoresistive microcantilever sensors. Joule heating and thermal deflections are a major source of noise in such sensors. This work uses analytical and numerical techniques to characterise the Joule heating in 4-layer piezoresistive microcantilevers made of silicon and silicon dioxide substrates but with the same U-shaped silicon piezoresistor. A theoretical model for predicting the temperature generated due to Joule heating is developed. The commercial finite element software ANSYS Multiphysics was used to study the effect of electrical potential on temperature and deflection produced in the cantilevers. The effect of piezoresistor width on Joule heating is also studied. Results show that Joule heating strongly depends on the applied potential and width of piezoresistor and that a silicon substrate cantilever has better thermal characteristics than a silicon dioxide cantilever. View Full-Text
Keywords: Joule heating; piezoresistivity; microcantilever; bimetallic effect; biosensors Joule heating; piezoresistivity; microcantilever; bimetallic effect; biosensors
MDPI and ACS Style

Ansari, M.Z.; Cho, C. An Analytical Model of Joule Heating in Piezoresistive Microcantilevers. Sensors 2010, 10, 9668-9686.

Show more citation formats Show less citations formats

Article Access Map by Country/Region

1
Only visits after 24 November 2015 are recorded.
Back to TopTop