• Proceedings of the Korean Society of Computer Information Conference
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• 2019.07a
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• pp.337-338
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• 2019

본 연구에서는 열자격전류의 측정을 통해 얻은 데이터를 유한요소법을 이용하여 일렉트렛트 형성에 깊은 관련이 있는 대전 과정에 관한 시뮬레이션을 수행하였는데, 전극의 에지효과로 인한 전계의 집중 현상을 확인하였고 일렉트렛트의 불균일한 대전 상태 여부를 검증한 후 최적 설계를 도출하여 각종 센서재료의 적용에 기여할 것으로 사료된다.

• Proceedings of the Korean Society of Computer Information Conference
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• 2012.07a
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• pp.421-422
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• 2012

본 연구에서는 코로나 대전된 고분자의 열자격전류(Thermally Stimulated Current; 이하 TSC) 데이터를 기반으로 코로나 대전 과정을 유한요소법(Finite Element Method; 이하 FEM)을 이용하여 시뮬레이션하였다. $DC -5{\sim}-8[kV]$의 고전압을 고분자에 인가하여 형성시킨 일렉트렛트를 온도 범위 $-100{\sim}+200[^{\circ}C]$에서 얻은 TSC 데이터의 대전 과정을 조사하기 위하여 FEM으로 시뮬레이션을 수행하여 공간에서 코로나 대전 과정을 추정하였다.

• Proceedings of the KIEE Conference
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• 1995.11a
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• pp.398-400
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• 1995

In this Study, the Electrostatic Coutour Distribution in Polymer Electret Acoustic Sensor is calculated using Finite Element Method. As a result, the Electrostatic Countour Distribution is visualized and the design modification could be processed.

• Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
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• 2000.07a
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• pp.942-945
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• 2000

Recently, electret applications have placed the focus on polymer thin film because electrical properties of a blend are studied. In this paper, we hale measured the infra sonic frequency by using Electret Sensor. Electret is formed by appling the voltage range of -4[kV] to -8[kV] to PTFE film and the sensor is manufactured by moment method to detect the infra-sonic signal. Electret Infrasonic Transducer, which is designed and manufactured by using of the moment method according to the potential and electric field simulation , shows its promising result, since the average rising rate of sensitivity is 7.68 [dB/oct] under 1[Hz], and the average values are within ${\pm}$ 1 [dB/oct]. As a result, it is believed that the characteristics of acquired transducer can be applied to the medical treatment, the industry, and the animal life researches, and also the study on noise elimination is required.

• Proceedings of the Korean Society of Computer Information Conference
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• 2011.01a
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• pp.185-188
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• 2011

In order to estimate spatial charging process in the corona charging which has been used to make polymer electret, the electrical properties of polypropylene film were obtained from Thermally Stimulated Current(TSC) measurements after corona charging between knife electrode and cylinder electrode with the voltages of -5, -6, -7 and -8[kV], respectively. And then the electrostatic contour and the electric field vector were also simulated by using Finite Element Method(FEM). The edge effect around edge of knife electrode affected the electrostatic contour on surface of specimen and the electric field concentration inside specimen. The uneven charging state in the electret due to the mistake on design could be calculated and so the optimal design of corona charging device which is appropriate to various materials is come to be practicable.

• Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
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• 1998.06a
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• pp.435-438
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• 1998

In this paper, Electret is formed to range voltage -5[kV] to -8[kV] by corona charging in PTFE film and sensor is manufactured by method of moments in sensing infra sonic. Charges of charged film are calculated also TSC measurement and induced potential of sensing electrode according to the charges is become aware of computer simulation. Electret Infra Sonic Transducer, which is designed and manufactured according to the potential and electric field simulation in using method of moments, is proved as it is effectively. Because sensitivity that measured under 10[Hz] is that average value of sensitivity rising rate is 6.34 [dB/oct] as average value is $\pm$1 [dB/oct] range -5[kV] to -8[kV] in corona charging film. As a result, it is believed that characteristic of acquired transducer can be application of medical treatment, industry, and animal life researches and the study of noise elimination, what's more, is required.