2005 12th International Symposium on Electrets最新文献_第5页

Photoelectret media for atmospheric nanosensors 大气纳米传感器用光电驻极体介质

2005 12th International Symposium on Electrets Pub Date : 2005-09-11 DOI: 10.1109/ISE.2005.1612417

M. Goel

引用次数: 0

Surface charge behavior of corona-charged thin polymer films 电晕带电聚合物薄膜的表面电荷行为

2005 12th International Symposium on Electrets Pub Date : 2005-09-11 DOI: 10.1109/ISE.2005.1612352

T. Oda

引用次数: 1

The discussion on the structure observation of the biological electret-fish scale 生物驻极体鱼鳞结构观察的探讨

2005 12th International Symposium on Electrets Pub Date : 2005-09-11 DOI: 10.1109/ISE.2005.1612421

Catherine Wang, Li Jun, W. Zonghan

引用次数: 0

Temperature characteristics of electret condenser microphones 驻极体电容传声器的温度特性

2005 12th International Symposium on Electrets Pub Date : 2005-09-11 DOI: 10.1109/ISE.2005.1612411

Y. Yasuno, J. Ohga

{"title":"Temperature characteristics of electret condenser microphones","authors":"Y. Yasuno, J. Ohga","doi":"10.1109/ISE.2005.1612411","DOIUrl":"https://doi.org/10.1109/ISE.2005.1612411","url":null,"abstract":"A microphone should be robust when it is used for the mobile equipments. Generally in diaphragm electret type, as the temperature characteristic of diaphragm stiffness and gain characteristic of FET is opposite. These properties make the temperature characteristics of the sensitivity compensated to be almost flat. On the other hand, as fixed electrode electret type using PET diaphragm which has the same temperature coefficient as FET, consequently it is difficult to compensate the temperature characteristics. It is insufficient to say that still it is robust to temperature. In order to improve the temperature characteristic, an evaluation method about the temperature dependence of acoustic characteristics of electret condenser microphone is proposed. This report refers to the temperature dependence of the dominant parameter which the sensitivity of the microphone is being determined, and reported about the design method of the microphone that a temperature characteristic is stable. Finally, the silicone of the inorganic material is applied to the diaphragm and source follower circuit is effective about the high temperature 80 degrees C in impedance converter The possibility of electret condenser microphone which has a flat temperature characteristic was proposed.","PeriodicalId":364651,"journal":{"name":"2005 12th International Symposium on Electrets","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121341988","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 16

The electret properties of two kinds of poly(vinylidene fluoride-hexafluoropropylene) copolymer films 两种聚偏氟乙烯-六氟丙烯共聚物薄膜的驻极体性质

2005 12th International Symposium on Electrets Pub Date : 2005-09-11 DOI: 10.1109/ISE.2005.1612342

Feipeng Wang, Z. Xia, X. Qiu, Jun Shen

引用次数: 3

The Influence of halogen substituent in oxidation and reduction potential values of PPV-type polymer and block copolymer 卤素取代基对ppv型聚合物和嵌段共聚物氧化还原电位值的影响

2005 12th International Symposium on Electrets Pub Date : 2005-09-11 DOI: 10.1109/ISE.2005.1612438

L. Péres, M. Fernandes, J.R. Garcia, F. Nart, W. Hui

引用次数: 0

Sensors for detecting humic substances and heavy metal complexes in waters 用于探测水中腐殖质和重金属络合物的传感器

2005 12th International Symposium on Electrets Pub Date : 2005-09-11 DOI: 10.1109/ISE.2005.1612413

A. Firmino, C. E. Borato, F. L. Leite, O. N. Oliveira, W. Silva, L. Mattoso

引用次数: 1

Thermally stimulated currents in LB films composed of molecules in which various polar groups are bonded to linear hydrocarbon chains 由不同极性基团与线性烃链结合的分子组成的LB膜中的热刺激电流

2005 12th International Symposium on Electrets Pub Date : 2005-09-11 DOI: 10.1109/ISE.2005.1612367

K. Ohara, T. Inui

{"title":"Thermally stimulated currents in LB films composed of molecules in which various polar groups are bonded to linear hydrocarbon chains","authors":"K. Ohara, T. Inui","doi":"10.1109/ISE.2005.1612367","DOIUrl":"https://doi.org/10.1109/ISE.2005.1612367","url":null,"abstract":"Thermally stimulated current (TSC) was investigated in as obtained and corona-charged multi-layer LB films, composed of molecules in which various polar groups, such as -COOCH/sub 3/, -CH/sub 2/NH/sub 2/, -CH/sub 2/OH and -CONH/sub 2/, were bonded to linear hydrocarbon chains, -(CH/sub 2/)/sub 16/CH/sub 3/. In the as obtained LB films of these materials, several TSC peaks were observed below and above the melting point of bulk materials. TSC peaks observed below the melting point were attributed to the pre-melting and the melting of two-dimensional LB layers. Peaks of TSC above the melting point of bulk materials may be caused by the aluminum oxide films formed on the electrode and by the reorientation of residual water molecules in the layers. In the corona-charged LB layers, the same types of TSC curves were obtained. However, the current values were larger and TSC were clearer. The activation energy for pre-melting peaks was obtained to be 135 kJ/mol in average and that of water in the one layer stearyl alcohol film was 77 kJ/mol. It is concluded that the head polar groups have an effect on the TSC appearance and peak position.","PeriodicalId":364651,"journal":{"name":"2005 12th International Symposium on Electrets","volume":"69 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116924944","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Molecular diodes: an altered polarity for rectification in ultra-thin films where the orientation of the dipole is reversed 分子二极管:在偶极子方向颠倒的超薄薄膜中为整流而改变的极性

2005 12th International Symposium on Electrets Pub Date : 2005-09-11 DOI: 10.1109/ISE.2005.1612353

G.J. Ashwell, W. D. Tyrrell, B. Robinson

引用次数: 2

Studies of dielectric and switching characteristics in VDF/TrFE copolymer thin films by means of pulse-train measurements 用脉冲列测量方法研究VDF/TrFE共聚物薄膜的介电和开关特性

2005 12th International Symposium on Electrets Pub Date : 2005-09-11 DOI: 10.1109/ISE.2005.1612343

T. Nakajima, Y. Takahashi, T. Furukawa

引用次数: 0