Showing papers on "Piezoelectric sensor published in 1970"
TL;DR: In this article, the measured value of the piezoelectric strain modulus d31 of a length expander bar of polyvinylchloride was 0.6×10−12 m V−1.
Abstract: Improved poling techniques have led to improvement in the piezoelectric activity of bulk polymers. Results now achieved approach the activity of conventional piezoelectric materials such as quartz, and further improvement is anticipated. The measured value of the piezoelectric strain modulus d31 of a length expander bar of polyvinylchloride was 0.6×10−12 m V−1 and the electromechanical coupling factor k31 was 0.6%. The response of a sample as an underwater sound receiver was −112 dB re 1 V/μbar.
15 citations
TL;DR: In this paper, an interdigital transducer on a piezoelectric ceramic with the polarisation directed from one comb to the other is described, and the efficiency is determined by complex-admittance measurements.
Abstract: An interdigital transducer on a piezoelectric ceramic with the polarisation directed from one comb to the other is described. The efficiency is determined by complex-admittance measurements.
2 citations
01 Feb 1970
TL;DR: The strain-induced variation of the CdSe TFT characteristics was measured in this article and the experimental and theoretical values of the generated piezoelectric voltage agree within 25 percent.
Abstract: The strain-induced variation of the CdSe TFT characteristics was measured. The experimental and theoretical values of the generated piezoelectric voltage agree within 25 percent. The strain sensitivity of the fabricated devices was in the order of 8000 volts per unit strain.
2 citations