基于P(VF/sub 2/-VF/sub 3/)薄膜产生Lamb波的密度传感器的温度依赖特性

1997 IEEE Ultrasonics Symposium Proceedings. An International Symposium (Cat. No.97CH36118) Pub Date : 1997-10-05 DOI:10.1109/ULTSYM.1997.663041

L. Scandelari, N. Noury, P. Benech, E. Chamberod

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引用次数: 0

摘要

我们提出了温度依赖特性的兰姆波装置用作液体密度传感器。将P(VF/sub 2/-VF/sub 3/)薄膜贴在非压电介质上，简化了其制备工艺。测量使用最低阶反对称兰姆波(A/sub 0/ mode)。我们测量了不同NaCl浓度下波的相速度和群速度，并分析了器件的温度依赖性性能。每增加摄氏一度，同步频率降低近1.4千赫。插入损耗随温度升高而降低。

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Temperature-dependent characteristics of a density sensor based on Lamb waves generated with a P(VF/sub 2/-VF/sub 3/) film

We present the temperature-dependent characteristics of a Lamb wave device used as a liquid density sensor. Its fabrication process was simplified using a P(VF/sub 2/-VF/sub 3/) film stuck on a non-piezoelectric medium. The lowest order antisymmetric Lamb waves (A/sub 0/ mode) are used for measurements. We measured the phase and group velocities of the waves for different concentrations of NaCl and we analyzed the temperature dependent performance of our device. The synchronism frequency decreases almost 1.4 kHz per Celsius degree increase. Insertion loss decreases with increasing temperature.

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来源期刊

1997 IEEE Ultrasonics Symposium Proceedings. An International Symposium (Cat. No.97CH36118)

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