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A four-quadrant PVDF transducer for surface acoustic wave detection.

Lu Z, Dorantes-Gonzalez DJ, Chen K, Yang F, Jin B, Li Y, Chen Z, Hu X - Sensors (Basel) (2012)

Bottom Line: In this paper, a polyvinylidene fluoride (PVDF) piezoelectric transducer was developed to detect laser-induced surface acoustic waves in a SiO(2)-thin film-Si-substrate structure.In order to solve the problems related to, firstly, the position of the probe, and secondly, the fact that signals at different points cannot be detected simultaneously during the detection process, a four-quadrant surface acoustic wave PVDF transducer was designed and constructed for the purpose of detecting surface acoustic waves excited by a pulse laser line source.The experimental results of the four-quadrant piezoelectric detection in comparison with the commercial nanoindentation technology were consistent, the relative error is 0.56%, and the system eliminates the piezoelectric surface wave detection direction deviation errors, improves the accuracy of the testing system by 1.30%, achieving the acquisition at the same time at different testing positions of the sample.

View Article: PubMed Central - PubMed

Affiliation: State Key Laboratory of Precision Measuring Technology and Instruments, Tianjin University, Weijin Road, No. 92, Tianjin 300072, China. zimo.lu@yahoo.cn

ABSTRACT
In this paper, a polyvinylidene fluoride (PVDF) piezoelectric transducer was developed to detect laser-induced surface acoustic waves in a SiO(2)-thin film-Si-substrate structure. In order to solve the problems related to, firstly, the position of the probe, and secondly, the fact that signals at different points cannot be detected simultaneously during the detection process, a four-quadrant surface acoustic wave PVDF transducer was designed and constructed for the purpose of detecting surface acoustic waves excited by a pulse laser line source. The experimental results of the four-quadrant piezoelectric detection in comparison with the commercial nanoindentation technology were consistent, the relative error is 0.56%, and the system eliminates the piezoelectric surface wave detection direction deviation errors, improves the accuracy of the testing system by 1.30%, achieving the acquisition at the same time at different testing positions of the sample.

No MeSH data available.


Nanoindentation loading and unloading curves.
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f9-sensors-12-10500: Nanoindentation loading and unloading curves.

Mentions: Since nanoindentation is the main reliable commercial measurement method to detect Young's modulus of thin films, a cross validation of this results may be useful for experimental verification purposes. Therefore, a commercial nanoindentation equipment from the Nano company was used to test the Young's modulus of the sample, resulting in the loading and unloading curves shown in Figure 9.


A four-quadrant PVDF transducer for surface acoustic wave detection.

Lu Z, Dorantes-Gonzalez DJ, Chen K, Yang F, Jin B, Li Y, Chen Z, Hu X - Sensors (Basel) (2012)

Nanoindentation loading and unloading curves.
© Copyright Policy
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC3472840&req=5

f9-sensors-12-10500: Nanoindentation loading and unloading curves.
Mentions: Since nanoindentation is the main reliable commercial measurement method to detect Young's modulus of thin films, a cross validation of this results may be useful for experimental verification purposes. Therefore, a commercial nanoindentation equipment from the Nano company was used to test the Young's modulus of the sample, resulting in the loading and unloading curves shown in Figure 9.

Bottom Line: In this paper, a polyvinylidene fluoride (PVDF) piezoelectric transducer was developed to detect laser-induced surface acoustic waves in a SiO(2)-thin film-Si-substrate structure.In order to solve the problems related to, firstly, the position of the probe, and secondly, the fact that signals at different points cannot be detected simultaneously during the detection process, a four-quadrant surface acoustic wave PVDF transducer was designed and constructed for the purpose of detecting surface acoustic waves excited by a pulse laser line source.The experimental results of the four-quadrant piezoelectric detection in comparison with the commercial nanoindentation technology were consistent, the relative error is 0.56%, and the system eliminates the piezoelectric surface wave detection direction deviation errors, improves the accuracy of the testing system by 1.30%, achieving the acquisition at the same time at different testing positions of the sample.

View Article: PubMed Central - PubMed

Affiliation: State Key Laboratory of Precision Measuring Technology and Instruments, Tianjin University, Weijin Road, No. 92, Tianjin 300072, China. zimo.lu@yahoo.cn

ABSTRACT
In this paper, a polyvinylidene fluoride (PVDF) piezoelectric transducer was developed to detect laser-induced surface acoustic waves in a SiO(2)-thin film-Si-substrate structure. In order to solve the problems related to, firstly, the position of the probe, and secondly, the fact that signals at different points cannot be detected simultaneously during the detection process, a four-quadrant surface acoustic wave PVDF transducer was designed and constructed for the purpose of detecting surface acoustic waves excited by a pulse laser line source. The experimental results of the four-quadrant piezoelectric detection in comparison with the commercial nanoindentation technology were consistent, the relative error is 0.56%, and the system eliminates the piezoelectric surface wave detection direction deviation errors, improves the accuracy of the testing system by 1.30%, achieving the acquisition at the same time at different testing positions of the sample.

No MeSH data available.