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Flexible photoinduced ultrasonic thin film transducer and preparation method thereof

A technology of photoinduced ultrasound and transducers, applied in the direction of fluid using vibration, etc., can solve problems such as ultrasonic loss and poor coupling, and achieve the effects of reducing ultrasonic loss, widening resolution, and increasing frequency bandwidth

Active Publication Date: 2019-03-08
INST OF ELECTRICAL ENG CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the shortage of ultrasonic loss caused by poor coupling due to the use of quartz glass as the substrate of the existing photoinduced ultrasonic thin film transducer, the present invention proposes a flexible photoinduced ultrasonic thin film transducer and its preparation method

Method used

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  • Flexible photoinduced ultrasonic thin film transducer and preparation method thereof
  • Flexible photoinduced ultrasonic thin film transducer and preparation method thereof
  • Flexible photoinduced ultrasonic thin film transducer and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0048] Such as figure 2 As shown, the steps of the present invention to prepare the flexible photo-ultrasonic thin film transducer Example 1 are as follows.

[0049] 1. Step S210, providing a cleaned glass substrate.

[0050] The glass substrate is treated with vacuum plasma to remove organic impurities on the glass surface and increase surface wettability. The substrate provided in this step can be but not limited to glass.

[0051] Among them, the vacuum plasma treatment time is 300s.

[0052] 2. Step S220, using a fluorine-containing silane solution to perform hydrophobic treatment on the substrate.

[0053] Soak the substrate cleaned in step S210 in the fluorine-containing silane solution, take out the substrate after a period of time, and then rinse and dry it. It is also possible to form a substrate with a hydrophobic surface based on a fluorine-containing silane solution and using methods such as spin coating, solution spraying, solution evaporation, and the like. ...

Embodiment 2

[0068] 1. Step S210, providing a cleaned glass substrate.

[0069] The supplied substrates are vacuum plasma treated to remove organic impurities from the glass surface and increase surface wettability. The substrate provided in this step can be but not limited to glass.

[0070] Among them, the vacuum plasma treatment time is 300s.

[0071] 2. Step S220, using a fluorine-containing silane solution to perform hydrophobic treatment on the substrate.

[0072] Soak the substrate cleaned in step S210 in the fluorine-containing silane solution, take out the substrate after a period of time, and then rinse and dry it. It is also possible to form a substrate with a hydrophobic surface based on a fluorine-containing silane solution and using methods such as spin coating, solution spraying, solution evaporation, and the like.

[0073] The fluorine-containing silane solution in this embodiment is a mixed solution of tridecafluorooctyltrimethoxysilane and toluene, and the concentratio...

Embodiment 3

[0086] The fluorine-containing silane solution used in this embodiment is a mixture of dodecafluoroheptylpropyltrimethoxysilane and toluene, wherein the concentration of fluorine-containing silane is 10 vol%.

[0087] Specifically, the steps are as follows:

[0088] 1. Step S210, providing a cleaned glass substrate.

[0089] The supplied substrates are vacuum plasma treated to remove organic impurities from the glass surface and increase surface wettability. The substrate provided in this step can be but not limited to glass.

[0090] Among them, the vacuum plasma treatment time is 300s.

[0091] 2. Step S220, using a fluorine-containing silane solution to perform hydrophobic treatment on the substrate.

[0092] Soak the substrate cleaned in step S210 in the fluorine-containing silane solution, take out the substrate after a period of time, and then rinse and dry it. It is also possible to form a substrate with a hydrophobic surface based on a fluorine-containing silane so...

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Abstract

The invention discloses a flexible photoinduced ultrasonic thin film transducer and a preparation method thereof. The ultrasonic thin film transducer comprises a flexible transparent substrate (120),a light absorbing layer (130) and a thermos-elastic layer (140) from top to bottom in sequence. The flexible transparent substrate (120) is transparent polydimethylsiloxanepolymers; the light absorbing layer (130) is carbon nanotubes; and the thermo-elastic layer (140) is polydimethylsiloxane polymers. The preparation method of the flexible photoinduced ultrasonic thin film transducer comprises the steps that a glass substrate is spin-coated with a polydimethylsiloxane agent, and the flexible transparent substrate is prepared; an aluminum oxide inorganic screening film deposited with a carbonnanotube filter cake is pressed onto the transparent polymer thin film prepared in the second step, the aluminum oxide inorganic screening film is peeled off, and a carbon nanotube thin film transferred with the light absorbing layer is obtained on a transparent polymer substrate; and a carbon nanotube thin film layer is spin-coated with the polydimethylsiloxane polymers, and the thermos-elastic layer is formed after solidification. After the thermo-elastic layer is solidified, the glass substrate is peeled off.

Description

technical field [0001] The invention belongs to the field of ultrasonic transducers, in particular to a flexible photoinduced ultrasonic transducer utilizing photoacoustic effect and a preparation method thereof. Background technique [0002] Ultrasonic transducers and their arrays are widely used in industrial non-destructive testing, medical diagnosis and treatment, underwater communication and positioning, material testing and analysis, and play an important role in social life and industrial production. As a key component of ultrasonic detection and imaging technology, high-performance ultrasonic transducers have always been a research hotspot at home and abroad. Compared with traditional electric-driven ultrasonic transducers, photoacoustic effect-based photo-induced ultrasonic thin-film transducers have attracted more and more attention due to their many characteristics. The photoinduced ultrasonic thin film transducer uses pulsed laser to irradiate the photoinduced u...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B06B3/00
CPCB06B3/00
Inventor 夏慧丁广鑫李晓南王丽丽
Owner INST OF ELECTRICAL ENG CHINESE ACAD OF SCI
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