Bent capillary wave propeller, production method and propelling system

A capillary wave and propulsion technology, applied in the field of mechanical engineering, can solve the problems of low capillary wave intensity, limited capillary wave amplitude, and limited propulsion capability, and achieves increased Coulomb force, increased repulsive force, and strong propulsion capability. Effect

Active Publication Date: 2021-12-07
DALIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the capillary wave amplitude generated by the existing straight plate dielectric wetting unit is limited, so the wave intensity of the capillary wave is not high, and its propulsion ability is limited when it is used as a propeller, which hinders its application

Method used

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  • Bent capillary wave propeller, production method and propelling system
  • Bent capillary wave propeller, production method and propelling system
  • Bent capillary wave propeller, production method and propelling system

Examples

Experimental program
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preparation example Construction

[0023] Such as figure 2 A preparation method of a curved capillary wave thruster shown, comprising:

[0024] Use a 3D printer to print the ABS material into a curved substrate 1-1 in the shape of a horizontal concave 120°;

[0025] Magnetron sputtering indium tin oxide onto the polyethylene terephthalate film to form a conductive layer 1-2, and affixing the conductive layer 1-2 with a thickness of 0.05 mm on the curved substrate 1-1;

[0026] Use a conductive resin to adhere the nickel wire to the conductive layer 1-2 and heat it for a certain period of time to form an electrode 1-3;

[0027] Magnetron sputtering silicon dioxide onto the upper surface of the conductive layer 1-2 with the electrodes 1-3 to form a dielectric layer 1-4;

[0028] Plating the polytetrafluoroethylene solution on the surface of the dielectric layer 1-4 to form a hydrophobic layer 1-5, immersing the curved substrate 1-1 with the dielectric layer 1-4 in a 5% polytetrafluoroethylene solution, using ...

Embodiment 1

[0032] A method for preparing a curved capillary wave propeller, comprising the following steps: using a 3D printer to print a curved substrate 1-1 with a curvature of 120°, the material is ABS, and the deformation temperature of the ABS is higher than the baking temperature in the subsequent steps, which can ensure The substrate is not deformed during the baking process. Adhere a 0.05 mm thick conductive film with indium tin oxide on the surface to the above-mentioned curved substrate 1-1, use conductive resin to fix the nickel wire on the conductive film on the upper end, put it in an oven and bake at 70°C for 60 minutes. After the conductive resin is solidified, magnetron sputtering of silicon dioxide onto the conductive resin and the electrodes 1-3 is used as the dielectric layer 1-4 of the curved capillary wave thruster to prevent the unit from being broken down after electrification. Use polytetrafluoroethylene solution as the hydrophobic layer 1-5 of the curved capillar...

Embodiment 2

[0034] A 120° curved capillary wave propeller was prepared according to the operation steps of Example 1, and this curved capillary wave propeller was added to the propulsion system as a water surface propeller.

[0035] Lightweight unmanned ships and aquatic micro-robots have extremely high requirements on their own weight. Traditional propulsion devices using mechanical structures such as motors and blades will greatly increase the weight and complexity of the propulsion device, thereby increasing the volume of the device and limiting its application scenarios . Compared with existing small propulsion devices, the capillary wave propulsion system based on the dielectric wetting effect does not rely on mechanical motion to achieve propulsion. When an alternating current is applied at both ends of the circuit, it will cause the oscillation of the contact angle of the liquid on the surface of the capillary wave thruster, and the change of the contact angle will cause the displa...

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Abstract

The invention discloses a bent capillary wave propeller, a production method of the bent capillary wave propeller and a propelling system based on the bent capillary wave propeller. The bent capillary wave propeller structurally comprises a bent substrate, a conductive layer, an electrode, a dielectric layer and a hydrophobic layer. The conductive layer is adhered to the substrate, the electrode is adhered to the conductive layer, the dielectric layer is sprayed on the conductive layer and the dielectric layer in a magnetron sputtering manner, and the hydrophobic layer is adhered to the dielectric layer. In the working state, the initial contact angle between the bent capillary wave propeller and a liquid is 129 degrees, and after an electric signal is applied, the contact angle changes to 68 degrees. By changing the shape of a substrate of the capillary wave propeller, when the curvature of the capillary wave propeller is larger, capillary waves close to the hydrophobic layer are bound in a smaller space, the distance between charges of the same kind carried by the liquid is reduced, a coulomb force between the charges is increased, a repulsive force is increased, the change of a contact angle is larger, and therefore the amplitude of the capillary waves is increased.

Description

technical field [0001] The present invention relates to the field of mechanical engineering, and in particular to a curved capillary wave propeller, a preparation method of the curved capillary wave propeller and a propulsion system based on the curved capillary wave propeller. Background technique [0002] With the increasing demand for aquatic micro-robots in water environment monitoring and confined space exploration in recent years, its application potential has attracted more and more attention, but it is limited by its complex electronic devices such as batteries, controllers, flaps, etc. Parts that coordinate actions, such microrobots aren't really "tiny" in size and weight. There is a need for a light-weight, simple-structured driving method to enable the micro-robot to perform covert operations without being detected by optical technology or infrared instruments. [0003] Traditional surface propulsion devices use mechanical structures such as motors and blades, wh...

Claims

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Application Information

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IPC IPC(8): B63H1/37H02N11/00
CPCB63H1/37H02N11/006Y02T70/5236
Inventor 姜东岳田鹏昊陈贵军
Owner DALIAN UNIV OF TECH
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