Particle operating and controlling system and method based on slit phononic crystals

A technology of phononic crystals and control systems, which is applied in radiation/particle processing, nuclear engineering, etc., can solve problems such as limiting ultrasonic applications, and achieve the effect of strong practicability and high controllability

Active Publication Date: 2016-12-21
SHENZHEN INST OF ADVANCED TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The single Gaussian beam focused sound field directly generated by the transducer, due to the limitation of the diffraction limit, can only manipulate particles equivalent to the working wavelength, which limits the application of ultrasound in the field of micro-nano particle manipulation

Method used

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  • Particle operating and controlling system and method based on slit phononic crystals
  • Particle operating and controlling system and method based on slit phononic crystals
  • Particle operating and controlling system and method based on slit phononic crystals

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Embodiment Construction

[0056] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0057] figure 1 It is a schematic structural diagram of a particle manipulation system based on a slit phononic crystal according to an embodiment of the present invention. Such as figure 1 As shown, the particle manipulation system includes: a slit phonon crystal structure 100 , a microfluidic device packaging structure 200 , an ultrasonic electronic system 300 and an optical observation system 400 . Wherein, the slit phononic crystal structure 100 is encap...

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Abstract

The invention provides a particle operating and controlling system and method based on slit phononic crystals. The particle operating and controlling system comprises a slit phononic crystal structure, a microflow control device encapsulating structure, an ultrasonic electronic system and an optical observation system, wherein the slit phononic crystal structure is encapsulated in the microflow control device encapsulating structure; the slit phononic crystal structure consists of two flat plates carved with a periodic structure, and the two flat plates are arranged in parallel at a certain interval; the ultrasonic electronic system is used for controlling transmission of ultrasonic waves and exciting the generation of a local electric field in the slit phononic crystal structure; and the optical observation system is used for observing the movement state of particles in slits of the slit phononic crystal structure. According to the particle operating and controlling system and method disclosed by the invention, the slit phononic crystals namely sound artificial structures are utilized, a superstrong local gradient sound field is produced in the slits of which the size is far smaller than the wave length of a sound source, and sound radiation force produced by the strong local gradient sound field is utilized for operating, controlling and capturing granules of which sizes are far smaller than the wave length.

Description

technical field [0001] The invention relates to the technical field of ultrasonic manipulation of particles, in particular to a system and method for manipulating particles based on an artificial sound field. Background technique [0002] The technology of manipulating micro-nanoparticles can provide an effective tool for studying the microscopic world. Currently, the technology of manipulating micro-nanoparticles has been applied in many fields such as physics, chemistry and biology. As a kind of mechanical wave, sound wave can exchange momentum and energy with particles in the sound field, generate sound radiation force, and control the movement of particles. Acoustic manipulation of micro-nanoparticles has the advantages of non-contact, no damage, good biocompatibility, and easy realization. However, due to the limitation of the diffraction limit, ordinary ultrasonic fields cannot directly manipulate particles much smaller than the wavelength (for example, ordinary megah...

Claims

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Application Information

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IPC IPC(8): G21K1/00
CPCG21K1/00
Inventor 王辰蔡飞燕李飞孟龙韦紫君康雁郑海荣
Owner SHENZHEN INST OF ADVANCED TECH
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