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A nanoscale sound wave generator with adjustable timbre

A sound wave generator and sound wave generation technology, applied in the direction of vibrating fluids, chemical instruments and methods, carbon compounds, etc., can solve the problems of poor sound adjustment, poor film temperature resistance, slow cooling speed, etc., and achieve a heating and cooling rate Fast, fast heating speed, low sounding voltage effect

Active Publication Date: 2020-09-04
HANGZHOU GAOXI TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the above two films have inevitable defects. First, the structural defects are large and the heating rate is slow; second, the thickness is high and the cooling rate is slow, so the sound clarity is poor; third, the temperature resistance of the film is relatively low Poor, poor sound adjustment

Method used

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  • A nanoscale sound wave generator with adjustable timbre
  • A nanoscale sound wave generator with adjustable timbre
  • A nanoscale sound wave generator with adjustable timbre

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] (1) By controlling the concentration of the graphene solution, an ultra-thin reduced graphene oxide film is obtained by suction filtration on the AAO basement membrane by the suction filtration method;

[0035] (2) the graphene film is peeled off from the AAO base film, specifically: the AAO base film (porosity 40%) with the reduced graphene oxide film attached to the surface, with the face where the graphene film is located facing up, place on the water, as figure 1 a and 2a; Press the edge of the AAO basement membrane, as figure 2 b, AAO basement membrane begins to sink, as figure 2 c. Finally, the AAO basement membrane sinks to the bottom of the cup, and the graphene membrane floats on the water surface (inside the dotted circle), as figure 1 b and 2d.

[0036] (3) Use a glass substrate with "Zhejiang University" printed on the surface to pick up the graphene film floating on the water surface from bottom to top, so that the graphene film is tiled on the surface...

Embodiment 2

[0042] (1) By controlling the concentration of the graphene solution, an ultra-thin graphene oxide film is obtained by suction filtration on the AAO basement membrane;

[0043](2) The graphene film is peeled off from the AAO base film, specifically: the AAO base film (porosity 60%) with the graphene oxide film attached to the surface, with the face where the graphene film is located facing up, placed On the water surface, press the edge of the AAO basement membrane, and the AAO basement membrane begins to sink. Finally, the AAO basement membrane sinks to the bottom of the cup, the graphene membrane floats on the water surface, and the graphene membrane is successfully peeled off.

[0044] (3) Utilize a hydrophilic silicon substrate printed with "Zhejiang University" on the surface (the silicon surface is treated hydrophilically, and the center is depressed, such as Figure 5 As shown) the graphene film floating on the water surface is picked up from bottom to top, so that the ...

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Abstract

The invention provides a tone adjustable nanoscale sound wave generator. According to the tone adjustable nanoscale sound wave generator, a graphene membrane is stripped from an AAO (anodic aluminum oxide) substrate membrane, and through freeze-drying, achieves self-support and separation from a substrate. The tone adjustable nanoscale sound wave generator avoids two stripping manners of reductionstripping and etching stripping and ensures that the stripped graphene membrane is free from any damage and maintains original state, structure and property on the AAO substrate membrane, and meanwhile, the AAO substrate membrane is not damaged and is reusable. The stripping method is applicable to ultrathin membranes, and ultrathin membranes stripped through the method can achieve self-support after being freeze-dried; through high-temperature treatment, the graphene membrane can achieve excellent electrothermal performance and thermal conductivity and effectively bring about thermal agitation of air at the membrane. The tone adjustable nanoscale sound wave generator is good in tone quality and high in sound articulation and can regulate the thermal conductivity of the film and design the middle bearing point of a suspended film to regulate waveforms excited by sound and further to regulate tone.

Description

technical field [0001] The invention relates to the field of film preparation, in particular to a nanoscale sound wave generator with adjustable tone. Background technique [0002] Graphene film has great electron mobility, high strength, excellent chemical modification, etc., and is known as the material of the future. At present, nanometer-thick graphene has shown great application advantages in the fields of conductive films, optoelectronic devices, acoustic wave detection, and gas detection, and is expected to be industrialized. Among them, nano-thick graphene film is divided into two types: CVD graphene and graphene oxide-based nano-graphene. Graphene oxide is prepared by oxidation of graphite, which accounts for 70% of the world's reserves, and is cheap. [0003] The stripping methods of nano-graphene film mainly include the following types: [0004] One, etching method, prepare graphene oxide film with substrate by means of suction filtration, film laying, etc. and...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B06B1/02C01B32/194
CPCB06B1/02C01B32/194
Inventor 高超彭蠡刘一晗郭燕
Owner HANGZHOU GAOXI TECH CO LTD
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