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Flexible ultrasonic suspension device

A levitation device and flexible technology, applied in electrical components, piezoelectric effect/electrostrictive or magnetostrictive motors, generators/motors, etc., can solve the problems of loss of piezoelectric material sound energy, increase in probe size, etc. , to achieve the effect of improving the sound field intensity, improving the effect and convenient operation

Active Publication Date: 2019-04-26
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The introduction of this structure will not only increase the size of the probe, but also lose the acoustic energy radiated by the piezoelectric material

Method used

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  • Flexible ultrasonic suspension device

Examples

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Effect test

Embodiment 1

[0026] A flexible ultrasonic levitation device such as figure 1 As shown, it includes a base plate 1, an ultrasonic generator, an ultrasonic transducer, an electromechanical transducing material 2, a reflector 3 and a distance adjustment mechanism; the electromechanical transducing material 2 is placed on the base plate 1, and the ultrasonic generator, the ultrasonic transducer and the The electromechanical transducing materials 2 are connected sequentially; the electromechanical transducing materials 2 are flexible electromechanical transducing materials. Among them, the flexible electromechanical transducing material is a flexible piezoelectric electret film; the material of the flexible piezoelectric electret film is selected from polypropylene (PP), and the thickness of the flexible piezoelectric electret film is 180 μm; The polar film is a flexible piezoelectric electret film that has undergone electric polarization treatment; during the electric polarization treatment, a...

Embodiment 2

[0029] A flexible ultrasonic levitation device such as figure 1 As shown, it includes a base plate 1, an ultrasonic generator, an ultrasonic transducer, an electromechanical transducing material 2, a reflector 3 and a distance adjustment mechanism; the electromechanical transducing material 2 is placed on the base plate 1, and the ultrasonic generator, the ultrasonic transducer and the The electromechanical transducing materials 2 are connected sequentially; the electromechanical transducing materials 2 are flexible electromechanical transducing materials. Wherein, the flexible electromechanical transducing material is a flexible piezoelectric electret film; the material of the flexible piezoelectric electret film is selected from polytetrafluoroethylene (PTFE), and the thickness of the flexible piezoelectric electret film is 20 μm; The electroelectret film is a flexible piezoelectric electret film that has undergone electric polarization treatment; during the electric polariz...

Embodiment 3

[0031] A flexible ultrasonic levitation device such as figure 1 As shown, it includes a base plate 1, an ultrasonic generator, an ultrasonic transducer, an electromechanical transducing material 2, a reflector 3 and a distance adjustment mechanism; the electromechanical transducing material 2 is placed on the base plate 1, and the ultrasonic generator, the ultrasonic transducer and the The electromechanical transducing materials 2 are connected sequentially; the electromechanical transducing materials 2 are flexible electromechanical transducing materials. Among them, the flexible electromechanical transducing material is a flexible piezoelectric electret film; the material of the flexible piezoelectric electret film is selected from cycloolefin polymers, and the thickness of the flexible piezoelectric electret film is 100 μm; the flexible piezoelectric electret film The bulk film is a flexible piezoelectric electret film that has undergone electric polarization treatment; dur...

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Abstract

The invention relates to a flexible ultrasonic suspension device. The flexible ultrasonic suspension device comprises a bottom plate, an ultrasonic generator, an ultrasonic transducer, an electromechanical transduction material and a reflecting plate; the electromechanical transduction material is placed on the bottom plate, and the ultrasonic generator, the ultrasonic transducer and the electromechanical transduction material are connected sequentially; and the reflecting plate is connected with a bracket through an amplitude-changing mechanism and placed on the upper part of the electromechanical transduction material, and the electromechanical transduction material is a flexible electromechanical transduction material. Compared with the prior art, the flexible ultrasonic suspension device has the characteristics that the electromechanical transduction material is flexible and adjustable and can be prepared in a large-area mode; and in the operation process, the flexible electromechanical transduction material is simply operated, the distance between the electromechanical transduction material and the reflecting plate is controlled, and thus ultrasonic suspension and simple control over a suspended object can be achieved.

Description

technical field [0001] The invention belongs to the technical field of ultrasonic applications, and in particular relates to a flexible ultrasonic levitation device. Background technique [0002] Piezoelectret (Piezoelectret) or ferroelectret is a kind of electret material with piezoelectric effect and containing oriented "giant electric dipole". As a new type of piezoelectric functional material, piezoelectric electret not only has high piezoelectric activity, but also has the characteristics of low acoustic impedance, flexibility, large-area film formation, and low cost. Devices, wearable devices and micro-energy harvesters have broad application prospects. [0003] Acoustic levitation technology is a key technology to realize material container-free processing under ground and space conditions, and has high demand in advanced materials research, biochemical research, pharmaceuticals, aerospace and other fields. Compared with other levitation technologies, acoustic levit...

Claims

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Application Information

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IPC IPC(8): H02N2/02H02N2/04
CPCH02N2/02H02N2/04
Inventor 张晓青薛远
Owner TONGJI UNIV
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