Transverse anti-symmetric elastic wave excitation device and preparation method

An antisymmetric, elastic wave technology, applied in the direction of the fluid using vibration, can solve the problems of multi-functional device design and experimental verification difficulties, and achieve the effect of simple structure and convenient preparation

Active Publication Date: 2022-02-08
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This patented technology allows scientists to study sound waves without having to worry about their symmetry properties or how they are affected when placed on surfaces like tablesets. It also includes various technical features that make it easier than existing methods such as circularly polarization (CP). Additionally, this new method has been developed into different shapes with varying sizes and materials options, making them more convenient to use compared to previous designs.

Problems solved by technology

The technical problem addressed in this patents relates to finding a way to create a more symmetrical type of electromagnetic radiation called “transversely” without losing its effectiveness due to changes caused during reflection from different directions. This would make studying material systems and topology better at future generations than previous experiments had done previously.

Method used

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  • Transverse anti-symmetric elastic wave excitation device and preparation method
  • Transverse anti-symmetric elastic wave excitation device and preparation method
  • Transverse anti-symmetric elastic wave excitation device and preparation method

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Embodiment

[0039] The present invention provides a transverse antisymmetric elastic wave excitation device, which includes a piezoelectric vibration component, a connection fixture 3 , a wiring group of the piezoelectric vibration component, and an installation base 8 .

[0040] Such as figure 1 As shown, the piezoelectric vibration component includes a first piezoelectric electret film 1 and a second piezoelectric electret film 2, in order to ensure that the materials of the first piezoelectric electret film 1 and the second piezoelectric electret film 2 The same, the same size, the same polarization direction, and the same processing technology, the same piece of piezoelectric electret film is cut laterally from the middle, and the first piezoelectric electret film 1 and the second piezoelectric electret film 2 Arranged according to the short side alignment, the piezoelectric electret film is made of irradiation cross-linked polypropylene piezoelectric electret film, the dimensions of the

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Abstract

The invention relates to a transverse anti-symmetric elastic wave excitation device, which comprises a piezoelectric vibration assembly, a connecting and fixing piece and a wiring group of the piezoelectric vibration assembly. The piezoelectric vibration assembly comprises two identical piezoelectric electret films, namely a first piezoelectric electret film and a second piezoelectric electret film of which the short sides are aligned with each other. The connecting and fixing piece is used for fixing the piezoelectric vibration assembly to the surface of a structure and ensuring that the piezoelectric electret films are insulated from the surface of the structure. The first piezoelectric electret film and the second piezoelectric electret film are respectively connected with excitation voltage signals which are provided externally and have a phase difference Pi through the wiring group so as to convert the excitation voltage signals into mechanical vibration, and the mechanical vibration is conducted to the surface of the structure through the connecting and fixing piece to complete excitation of transverse anti-symmetric elastic waves. Compared with the prior art, the transverse anti-symmetric elastic wave excitation device has the advantages that the structure is simple, preparation is convenient, and the blank that there is no transverse anti-symmetric elastic wave excitation device at present is filled.

Description

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Claims

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Application Information

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Owner TONGJI UNIV
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