کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7135612 | 1461867 | 2015 | 12 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
A new transduction mechanism for hydrophones employing piezoelectricity and a field-effect transistor
ترجمه فارسی عنوان
یک مکانیزم انتقال جدید برای هیدروفون با استفاده از پیزو الکتریکی و یک ترانزیستور اثر میدان
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موضوعات مرتبط
مهندسی و علوم پایه
شیمی
الکتروشیمی
چکیده انگلیسی
In contrast to the induced charge or voltage in conventional piezoelectric hydrophones, changes in the bound surface charge density and the corresponding changes in the electric field from a piezoelectric body do not depend on the size of the piezoelectric material. In this paper, we describe a new transduction mechanism, the piezoelectric gate on a field-effect transistor (PiGoFET), for applications in hydrophones. We describe a theoretical model of the PiGoFET, which shows that high sensitivity can be achieved with a small hydrophone due to the size independence of the PiGoFET transduction mechanism. A PiGoFET hydrophone was designed, fabricated, and characterized. The measured sensitivity was â175.5 ± 1 dB (Ref. V/μPa) at frequencies in the range 50-500 Hz. The measured frequency response was in agreement with the simulated data to within 2 dB. These results demonstrate potential applications in hydrophones, especially for wide-band and low-frequency applications, as well as in micro-hydrophones.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Sensors and Actuators A: Physical - Volume 233, 1 September 2015, Pages 557-568
Journal: Sensors and Actuators A: Physical - Volume 233, 1 September 2015, Pages 557-568
نویسندگان
Min Sung, Kumjae Shin, Wonkyu Moon,