The Optimization of the Thermal Response on the ZnO Flexible Pyroelectric Film Temperature Sensor

Lin, David T.W.; Hu, Yu; Cheng, Chin‐Hsiang

doi:10.1109/jsen.2011.2161666

Cited by 13 publications

(5 citation statements)

References 19 publications

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“…Recently, the FEM simulation of pyroelectric behavior has been widely investigated. Most of these works dealt with devices such as thermal sensors and transducers for energy harvest. − So far as we know, the FEM simulation of the pyroelectric behavior of BTO nanowires has been rarely reported, which was taken as a task of this work. The differences from other literature studies are summarized as follows: generally, in the literature, as the FEM is used to simulate pyroelectric behavior, the pyroelectric materials are regarded as insulators without considering the influence of the surrounding environment, whereas in our FEM for the PREC process, we considered the existence of free charge carriers in the BTO nanocrystals and the surrounding aqueous solution, which give rise to an electric current under the driving force of the pyroelectric field.…”

Section: Resultsmentioning

confidence: 99%

Enhanced Pyroelectric Catalysis of BaTiO₃ Nanowires for Utilizing Waste Heat in Pollution Treatment

Qin

Yuan

et al. 2018

ACS Appl. Mater. Interfaces

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A novel catalytic effect of pyroelectric materials induced by a change in temperature, namely pyroelectric catalysis, was found to be attractive due to its ability to utilize waste heat in pollution treatment. In this work, the pyroelectric catalytic properties of BaTiO3 (BTO) nanowires synthesized by a template hydrothermal method have been thoroughly investigated. The nanowires with an elongated polar axis show a superior pyroelectric catalytic performance in comparison with the equiaxial nanoparticles. Our numerical simulation results with a finite element method indicate that the enhanced catalytic efficiency of BTO nanowires can be attributed to the higher pyroelectric potential. On the basis of the pyroelectric effect and our experimental results, a pyroelectric catalytic degradation mechanism has been proposed by taking into account the migration of charge carriers and the formation of reaction radicals. This study for enhancing the pyroelectric catalytic activity by using BTO nanowires may provide a facile, promising, and new reusable strategy for the catalytic degradation of organic dye pollutant by means of temperature variation. It is hoped that the present work gives a clear understanding of the mechanism of pyroelectric catalysis.

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Section: Resultsmentioning

confidence: 99%

Enhanced Pyroelectric Catalysis of BaTiO₃ Nanowires for Utilizing Waste Heat in Pollution Treatment

Qin

Yuan

et al. 2018

ACS Appl. Mater. Interfaces

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“…Pyroelectric materials generate voltage and current when subjected to a change in temperature during heating and cooling [9]. The pyroelectric effect is different from the piezoelectric effect where mechanical stress is responsible for the polarization.…”

Section: Introductionmentioning

confidence: 99%

Temperature measurements using a lithium niobate (LiNbO3) pyroelectric ceramic

et al. 2015

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Temperature measurements from a power generation system could improve its overall safety and efficiency. In addition, real time temperature measurement could lead to a qualitative assessment of the health of the energy system. The challenge of real time temperature measurement inside of a power generation unit lies in the sustainability and the reliability of sensing materials in high temperature and corrosive environments. In this paper, a pyroelectric ceramic material (Lithium Niobate, LiNbO 3) capable of sustaining high temperatures, is considered as the temperature sensing material. LiNbO 3 is a pyroelectric material that generates current proportional to the rate of temperature change with time. This property is sustained by LiNbO 3 until it reaches its Curie temperature (1210 °C). The generated current could be used for many applications including temperature sensing and energy harvesting from waste heat recovery. This paper presents the temperature measurement results using a LiNbO 3 pyroelectric ceramic. Ceramics with dimensions of 1 cm x 1 cm with two different thicknesses, 2 mm and 1 mm, were used as the temperature measurement sensors. Two samples were heated by a 14.5 W/cm 2 heat flux and cooled with natural convection. Electrodes were made on both surfaces of the samples with high purity silver paint and two electrical leads were connected to a picoammeter to measure the generated current with respect to the rate of temperature change of the material during heating and natural cooling. A K-type surface thermocouple was attached on top of LiNbO 3 to compare the temperature measurements and maximum 8 % and 6.7 % differences were found for 2 mm and 1 mm thick samples, respectively.

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“…In the SCGM method, the sensitivity of the objective function resulted from the designed variables is evaluated first, and then by giving an appropriate fixed value for the step size, the optimal design can then be carried out without overwhelming mathematical derivation. This method is successfully employed to optimize the heat content in high power LED arrays , the design of the flexible pyroelectric temperature sensors and the LED package .…”

Section: Numerical Analysis and Optimization Methodsmentioning

confidence: 99%

Optimal design of a composite laminate hydrogen storage vessel

Lin

Hsieh

Chindakham

et al. 2012

Int. J. Energy Res.

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SUMMARY The purpose of this study is to optimize the design of a composite laminate hydrogen storage vessel for minimizing stress concentration. The optimum design of this study uses the finite‐element method combined with a simplified conjugated gradient method (SCGM) and genetic algorithm (GA) to find the minimization of von Mises stress of the composite laminate hydrogen storage vessel. In this study, a composite laminate hydrogen storage vessel with an aluminum liner and a carbon fiber/epoxy layer are considered. The winding angle and thickness of the composite layer are proposed as optimal design variables. The comparison between SCGM and GA is discussed in order to obtain a promising optimum in design process. Through this optimization, the best possible combination of winding angle and thickness of composite layer has been obtained to obtain minimum possible stress concentration. Copyright © 2012 John Wiley & Sons, Ltd.

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The Optimization of the Thermal Response on the ZnO Flexible Pyroelectric Film Temperature Sensor

Cited by 13 publications

References 19 publications

Enhanced Pyroelectric Catalysis of BaTiO₃ Nanowires for Utilizing Waste Heat in Pollution Treatment

Enhanced Pyroelectric Catalysis of BaTiO₃ Nanowires for Utilizing Waste Heat in Pollution Treatment

Temperature measurements using a lithium niobate (LiNbO3) pyroelectric ceramic

Optimal design of a composite laminate hydrogen storage vessel

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The Optimization of the Thermal Response on the ZnO Flexible Pyroelectric Film Temperature Sensor

Cited by 13 publications

References 19 publications

Enhanced Pyroelectric Catalysis of BaTiO3 Nanowires for Utilizing Waste Heat in Pollution Treatment

Enhanced Pyroelectric Catalysis of BaTiO3 Nanowires for Utilizing Waste Heat in Pollution Treatment

Temperature measurements using a lithium niobate (LiNbO3) pyroelectric ceramic

Optimal design of a composite laminate hydrogen storage vessel

Contact Info

Product

Resources

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Enhanced Pyroelectric Catalysis of BaTiO₃ Nanowires for Utilizing Waste Heat in Pollution Treatment

Enhanced Pyroelectric Catalysis of BaTiO₃ Nanowires for Utilizing Waste Heat in Pollution Treatment