Pair of graphene-based micro molecular optical tweezers

Abstract

The invention discloses a pair of graphene-based micro molecular optical tweezers. The pair of graphene-based micro molecular optical tweezers comprise a light source convergence unit and a moleculartrapping unit, the light source convergence unit is arranged above the molecular trapping unit and converges external incident light to a solution pool of the molecular trapping unit below the light source convergence unit, a to-be-detected molecular solution is placed in the solution pool of the molecular trapping unit, the trapping unit is integrated with microfluidic, and a sample is convenientto use. The invention has the following beneficial effects that high focusing of a light source is realized by utilizing excellent photoelectric characteristics of graphene, nanoscale limitation of light energy is realized by utilizing a local surface plasma optical effect of a graphene nanostructure, molecular trapping and intrinsic resonance excitation are realized at the same time, GHz intrinsic vibration of molecules can be induced, and measurement is performed by utilizing a radio frequency probe; electromagnetic waves are guided to a molecular trapping point through the graphene nanoelectrode and the external high-frequency electromagnetic waves, interaction between the external high-frequency electromagnetic waves and molecules is achieved, and the vibration characteristics of themolecules and the biological characteristics of the molecules are changed through the electromagnetic waves.

Description

technical field [0001] The invention relates to the technical field of analytical testing instruments, in particular to a graphene-based miniature molecular optical tweezers. Background technique [0002] In recent years, with the rapid development of the Internet and network data transmission business, the amount of data in production and life has increased exponentially, and the miniaturization and high integration of circuits have gradually become the direction of efforts of engineers. However, as the devices become smaller and smaller, the problems of traditional electrical devices such as large crosstalk, high loss, and serious heat dissipation gradually become prominent. Compared with electronic devices, photonic devices have many advantages such as low power consumption, fast speed, strong parallel ability, and strong anti-interference ability. However, due to the limitation of the diffraction limit, the geometric size of traditional photonic devices cannot be smalle...

AI Technical Summary

Problems solved by technology

However, due to the limitation of the size of traditional lenses, there is no micro-optical tweezers; there is no effective means for single-molecule GHz vibration detection.

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