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Realization method of double-focusing field electromagnetic tweezers based on time-reversal space-time focusing mechanism

A technology of time inversion and space-time focusing, applied in the direction of electromagnets and electromagnets without armatures, can solve the problems that the mechanical characteristics of the TR focusing field have not been reported in public, and achieve a widened size range, high practical value, The effect of low cost

Inactive Publication Date: 2018-06-19
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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Problems solved by technology

[0007] The above studies mainly focus on how to use TR technology to achieve electromagnetic energy focusing, but there are no public reports on the mechanical properties of the TR focusing field.

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  • Realization method of double-focusing field electromagnetic tweezers based on time-reversal space-time focusing mechanism
  • Realization method of double-focusing field electromagnetic tweezers based on time-reversal space-time focusing mechanism
  • Realization method of double-focusing field electromagnetic tweezers based on time-reversal space-time focusing mechanism

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Embodiment Construction

[0031] The technical solutions of the present invention will be described in detail below in conjunction with the accompanying drawings and examples of implementation, so as to understand the features and advantages of the present invention more clearly.

[0032] The present invention proposes a method for realizing a double-focus field EMT based on the TR space-time focusing mechanism, and the system structure schematic diagram of the device is as follows figure 1 As shown, it specifically includes “plane TRM” 101 , “pre-detection antenna array” 102 , “manipulation plane” 103 , observation equipment 104 , computer 105 , and signal recording and generating equipment 106 . In this embodiment, the antenna unit used is a Vivaldi ultra-wideband antenna, the central working frequency used is 4.3 GHz, the corresponding wavelength λ=69.77 mm, and the working bandwidth is 2 GHz. The EMT simulation model of dual focus field based on TR space-time focusing mechanism is as follows: fig...

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Abstract

The invention discloses a method for realizing a double-focusing field electromagnetic tweezers based on a time-reversal space-time focusing mechanism, and belongs to the technical field of electromagnetic wave non-contact control. This method is based on the space-time focusing transmission mechanism of TR electromagnetic waves. Two parallel focusing spots are generated through a planar time reversal mirror. In the middle of the two focusing spots, a hollow space with extremely weak electromagnetic field strength is generated by the electromagnetic interference destructive mechanism. In the region, an electromagnetic field gradient potential well is formed to generate the required thrust and gradient force to realize the capture and manipulation of electrically neutral or weakly charged tiny particles. Compared with the single-point electromagnetic wave focusing field, the double focusing field can significantly reduce the scattering force, improve the electromagnetic field potential well gradient force, and solve the defect of weak electromagnetic wave dynamics below the optical frequency band; and can deepen the potential well depth of the electromagnetic field and improve the optical efficiency. Electromagnetic waves below the frequency band capture and manipulate the stability of particles; and can simultaneously bind a large number of electrically neutral or weakly charged particles in a narrow and long hollow area.

Description

technical field [0001] The invention belongs to the technical field of electromagnetic wave non-contact control, and in particular relates to a method for realizing a double-focusing-field electromagnetic tweezers based on a time-reversal space-time focusing mechanism. Background technique [0002] Non-contact manipulation of objects belongs to remote control. There is no mechanical contact between the device and the sample, so it will not cause mechanical damage to the sample, nor will it pollute and interfere with the surrounding environment of the sample. These characteristics make the technology of non-contact manipulation of objects widely used in life sciences, Medicine, genetic engineering, chemistry, physics, materials and nanoscience have broad application prospects. These characteristics have attracted many scholars to invest in the research, development and utilization of this technology. With the unremitting efforts of many scientists, the non-contact control tec...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01F7/20
CPCH01F7/20
Inventor 赵德双郭子珍
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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