کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1759142 1019266 2012 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Properties and characteristics of P(VDF/TrFE) transducers manufactured by a solution casting method for use in the MHz-range ultrasound in air
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم آکوستیک و فرا صوت
پیش نمایش صفحه اول مقاله
Properties and characteristics of P(VDF/TrFE) transducers manufactured by a solution casting method for use in the MHz-range ultrasound in air
چکیده انگلیسی

Highly effective piezoelectric polymer transducers operating in air at high frequencies have been successfully made by casting a solution of ferroelectric poly(vinylidene fluoride-co-trifluoroethylene) P(VDF/TrFE) directly on a backing metal plate, and their performance has been evaluated. By utilizing this method, it has been possible to develop the three kinds of transducers that operate respectively at 4, 6 and 10 MHz in air. For precise evaluation of the performance of the P(VDF/TrFE) transducers, the absorption loss in air was measured up to 10 MHz. It was confirmed that the empirical formula obtained from the measured absorption values in air at high frequencies was in alignment with its theoretical value. In addition, a high lateral resolution acoustic image of a ROM-Chip (amplitude-image) at 6 MHz in air was successfully displayed using an air coupled concave type P(VDF/TrFE) transducer by bonding an epoxy adhesive.


► High frequency air-coupled transducers are fabricated by P(VDF/TrFE) ferroelectric films.
► We have measured the air absorption loss between 1 to 10 MHz using the transducers.
► An acoustic image of a ROM-Chip was displayed using aconcave type P(VDF/TrFE) transducer at 6 MHz.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ultrasonics - Volume 52, Issue 3, March 2012, Pages 422–426
نویسندگان
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