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Algorri Genaro, José Francisco and Urruchi del Pozo, Virginia and Bennis, Noureddine and Sánchez Pena, José Manuel (2014). Liquid crystal temperature sensor based on a micrometric structure and a metallic nanometric layer. "IEEE Electron Device Letters", v. 35 (n. 6); pp. 666-668. ISSN 0741-3106. https://doi.org/10.1109/LED.2014.2314682.
Title: | Liquid crystal temperature sensor based on a micrometric structure and a metallic nanometric layer |
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Author/s: |
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Item Type: | Article |
Título de Revista/Publicación: | IEEE Electron Device Letters |
Date: | June 2014 |
ISSN: | 0741-3106 |
Volume: | 35 |
Subjects: | |
Freetext Keywords: | Temperature sensors, thin film sensors, liquid crystals, microstructure |
Faculty: | E.T.S.I. Telecomunicación (UPM) |
Department: | Tecnología Fotónica [hasta 2014] |
Creative Commons Licenses: | Recognition - No derivative works - Non commercial |
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This letter presents a novel temperature sensor, which consists of an interdigitated comb electrode structure with a micrometric-scale size, nanometric metallic layer, and nematic liquid crystal (NLC) film. This sensor exploits the permittivity dependence of the NLC with temperature and principle of electrical conductivity above the percolation threshold in thin film metallic layers. The latter has been demonstrated to increase the temperature sensitivity considerably. The high impedance input reduces the power dissipation, and the high enough voltage output makes it easy to measure the output signal with high precision. The operation principle and fabrication process as well as the characterization of the temperature sensor are presented. Experimental results show that the device offers a sensitivity of 9 mV/°C and is dependent on the applied voltage. This is six times greater than the same structure without the use of a nanometric layer.
Item ID: | 35857 |
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DC Identifier: | https://oa.upm.es/35857/ |
OAI Identifier: | oai:oa.upm.es:35857 |
DOI: | 10.1109/LED.2014.2314682 |
Official URL: | http://ieeexplore.ieee.org/xpl/articleDetails.jsp?... |
Deposited by: | Memoria Investigacion |
Deposited on: | 27 Jun 2015 09:54 |
Last Modified: | 27 Jun 2015 09:54 |