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A micro-nano motor structure based on bubble collapse high-speed jet propulsion

A high-speed jet and motor technology, applied in the direction of thrust reverser, machine/engine, mechanical equipment, etc., can solve the problems of tiny and affecting the motion efficiency of micro-nano motors, achieve high motion speed, reduce viscous resistance, and increase motion speed effect

Active Publication Date: 2020-04-07
HARBIN ENG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Although it is an effective driving method to drive micro-nano motors through air bubbles, micro-nano motors have viscous resistance during the movement of liquid media, so they must affect the movement efficiency of micro-nano motors, and the energy provided by micro-nano motors through bubbles It is also very small. Experiments show that the maximum speed of micro-nano motors can reach 2mm / s

Method used

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  • A micro-nano motor structure based on bubble collapse high-speed jet propulsion

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] The present invention provides a structure based on bubble collapse to propel micro-nano motors, such as figure 1 shown. The shape is designed to be streamlined as shown in the figure under the condition that the maximum performance can be provided. The expansion section at the tail is conducive to the micro-jet and pressure wave generated by the bubble collapse to more effectively impact and propel the micro-nano motor. The specific work is that the chemical fuel 1 in the micro-nano motor reacts with the working medium to generate a large number of bubbles, and then the bubbles gradually detach from the tail of the micro-nano motor. The direction of the bubble detachment is as follows: figure 1 The direction of bubble detachment in the medium is shown in 6. In the process of detaching from the wandering, the bubbles at the tail wall are controlled by ultrasonic means to break and collapse. The micro jets generated after the bubbles collapse and the pressure waves emit...

Embodiment 2

[0017] A micro-nano motor structure based on bubble collapse high-speed jet propulsion, including chemical fuel 1, working medium channel 2, bubble exhaust chamber 3, bubble 4, ultrasonic system 8, goods to be transported 9 and motor housing 10; The transport goods 9 are installed inside the motor casing, and the gaps thereof are filled with chemical fuel 1; the bubbles 4 generated by the reaction of the chemical fuel 1 are located in the exhaust bubble cavity 3, and the exhaust bubble cavity 3 is at the tail end of the chemical fuel 1; The ultrasonic system 8 for breaking up the gas bubbles 4 at the rear of the motor housing 10 is located outside the motor housing 10 .

[0018] The motor casing 10 is streamlined in shape, has a working medium channel 2 at its front, and has a trumpet-shaped air bubble diffuser at its rear.

[0019] The goods to be transported 9 and the motor housing 10 are filled with chemical fuel 1 and have a working medium channel 2 at the same time.

Embodiment 3

[0021] 1. The motor casing 10 of the micro-nano motor is loaded with chemical fuel 1 and goods 9 to be transported, the chemical reaction starts, and the air bubbles 4 are generated at the outlet of the tail of the micro-nano motor.

[0022] 2. When the bubble 4 leaves the tail of the micro-nano motor, the ultrasonic system 8 generates ultrasonic waves on the external surface to control the collapse of the bubble 4 .

[0023] 3. Bubble collapse produces many micro-bubbles, and at the same time, micro-jet and pressure waves impact the wall of the tail of the micro-nano motor, thereby driving the micro-nano motor to move forward quickly.

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Abstract

The invention discloses a micro-nano motor structure propelled based on bubble collapse high-speed jet, and belongs to the technical field of micro-nano motors. The structure comprises a chemical fuel1, a working medium channel 2, a bubble discharge cavity 3, bubbles 4, an ultrasonic system 8, goods to be transported 9 and a motor outer shell 10; the goods to be transported 9 are mounted in the motor outer shell 10, and the chemical fuel 1 is filled in gaps; the bubbles 4 are positioned in the bubble discharge cavity 3; the bubble discharge cavity 3 is at the tail end of the chemical fuel 1;and the ultrasonic system 8 is positioned at the external of the motor outer shell 10. The chemical fuel 1 is reacted to generate the bubbles 4; when the bubbles 4 are deviated from the motor of the micro-nano motor, the ultrasonic system 8 generates ultrasonic waves to control collapse of the bubbles 4; and the bubbles are collapsed to generate micro jet and pressure waves to impact on the tail wall surface of the micro-nano motor, so that the micro-nano motor is driven to quickly move forwards. The structure is propelled through the micro jet and the pressure waves, so that the micro-nano motor can achieve a higher motion speed.

Description

technical field [0001] The invention relates to the technical field of micro-nano motors, in particular to a micro-nano motor structure based on bubble collapse and high-speed jet propulsion. Background technique [0002] A micro-nano motor is a micro-nano device that can convert its own energy or its own different forms of energy into kinetic energy to drive itself to complete a specific movement. The micro-nano motor has flexible motion performance, indicating that it can complete loading and unloading and transport various specific micro-nano goods in liquid media, so it can be used in medical biosensing and drug transportation, etc., in micro-nano cleaning and environmental governance The use of protection and other aspects is also common. Such a wide range of application prospects makes micro-nano motors become the focus of research in various countries. Whitesides was the first to conduct research on self-propelled micro-nano motors, using polymers and platinum strip...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F03H99/00
CPCF03H99/00
Inventor 蒋运华邹志辉王海波要尧
Owner HARBIN ENG UNIV