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Theory of Infrared Detector Based on the Microcantilever Resonant Frequency Temperature Dependence

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2011
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Authors
Đurić, Zoran G.
Ranđelović, Danijela
Krstajić, Predrag
Jokić, Ivana
Djukic, M.
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Abstract
We developed a theory for the infrared (IR) thermal detector whose function is based on the dependence of the microcantilever resonant frequency on the thermal stress caused by IR radiation. We study performance of such a sensor using the general theory of microcantilever based resonators. The stress in the microcantilever is a result of the combined effect of the room temperature built-in stress stemming from the fabrication process and the thermal stress caused by the beam heating. We derive for the first time the analytical expressions for basic parameters, sensitivity, noise and detectivity, of such a sensor.
Keywords:
IR detector / microcantilever / oscillator / detectivity / thermal stress
Source:
Eurosensors Xxv, 2011, 25
Publisher:
  • Elsevier
Projects:
  • Reinforcement of Regional Microsystems and Nanosystems Centre (EU-205533)
  • Micro- Nanosystems and Sensors for Electric Power and Process Industry and Environmental Protection (RS-32008)

DOI: 10.1016/j.proeng.2011.12.095

ISSN: 1877-7058

WoS: 000300512400092

Scopus: 2-s2.0-84857180277
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URI
http://cer.ihtm.bg.ac.rs/handle/123456789/833
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