A Strip Cell in Pyroelectric Devices
1
Department of Mechanical Engineering, National Taiwan University of Science and Technology, No. 43, Keelung Rd., Sec. 4, Taipei 10607, Taiwan
2
Department of Mechanical Design Engineering, National Formosa University, No. 64, Wunhua Rd., Huwei Township, Yunlin 632, Taiwan
*
Author to whom correspondence should be addressed.
Academic Editor: Vittorio M. N. Passaro
Sensors 2016, 16(3), 375; https://doi.org/10.3390/s16030375
Received: 15 January 2016
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Revised: 26 February 2016
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Accepted: 7 March 2016
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Published: 15 March 2016
(This article belongs to the Section Physical Sensors)
The pyroelectric effect affords the opportunity to convert temporal temperature fluctuations into usable electrical energy in order to develop abundantly available waste heat. A strip pyroelectric cell, used to enhance temperature variation rates by lateral temperature gradients and to reduce cell capacitance to further promote the induced voltage, is described as a means of improving pyroelectric energy transformation. A precision dicing saw was successfully applied in fabricating the pyroelectric cell with a strip form. The strip pyroelectric cell with a high-narrow cross section is able to greatly absorb thermal energy via the side walls of the strips, thereby inducing lateral temperature gradients and increasing temperature variation rates in a thicker pyroelectric cell. Both simulation and experimentation show that the strip pyroelectric cell improves the electrical outputs of pyroelectric cells and enhances the efficiency of pyroelectric harvesters. The strip-type pyroelectric cell has a larger temperature variation when compared to the trenched electrode and the original type, by about 1.9 and 2.4 times, respectively. The measured electrical output of the strip type demonstrates a conspicuous increase in stored energy as compared to the trenched electrode and the original type, by of about 15.6 and 19.8 times, respectively.
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Keywords:
pyroelectricity; energy harvesting; dicing saw; temperature variation; lateral temperature gradient
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MDPI and ACS Style
Siao, A.-S.; Chao, C.-K.; Hsiao, C.-C. A Strip Cell in Pyroelectric Devices. Sensors 2016, 16, 375. https://doi.org/10.3390/s16030375
AMA Style
Siao A-S, Chao C-K, Hsiao C-C. A Strip Cell in Pyroelectric Devices. Sensors. 2016; 16(3):375. https://doi.org/10.3390/s16030375
Chicago/Turabian StyleSiao, An-Shen, Ching-Kong Chao, and Chun-Ching Hsiao. 2016. "A Strip Cell in Pyroelectric Devices" Sensors 16, no. 3: 375. https://doi.org/10.3390/s16030375
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