Adjustable all-optical transport band system for micro-nano particles and adjusting and control method thereof

Abstract

The present invention provides an adjustable all-optical transport band system for micro-nano particles and an adjusting and control method thereof. The adjustable all-optical transport band system comprises: a laser device, an optical system, and a sample stage, wherein the micro-nano particles are located on the sample stage, and a laser generated by the laser device is irradiated on the samplestage through the optical system to transport the micro-nano particles; and the optical system includes a circular cylindrical lens, a diffusion collimation lens group, a focusing lens, and an incident reflector mirror. Compared with the prior art, the beneficial effects are as follows: the all-optical transport band system for the micro-nano particles is connected to the position to control a light trap, and does not depend on the substrate structure, and can simultaneously realize adjustment and control of a micro-nano particle transport starting and ending point, transport speed, transportdistance and transport direction, greatly improves application flexibility of the optical transport system and broadens application prospects.

Description

technical field [0001] The present invention relates to the technical field of all-optical control of transport of micro-nano particles, and more specifically, relates to an adjustable all-optical transport belt system for micro-nano particles and a control method thereof. Background technique [0002] Optical force exists in the momentum exchange process when light interacts with matter. Because of its advantages of non-contact, non-damage, and high operating precision, it is widely used in frontier fields such as physics, chemistry, biology, and medicine. All-optical transport is a technology that uses optical power to transport micro-nano particles, which can precisely control the separation, classification and fixed-point transport of particles. The optical force used by the all-optical transport belt is at the pN level, which is the same order of magnitude as the force used to manipulate cells with optical tweezers and to study DNA characteristics with optical force. I...

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Problems solved by technology

Although this method can control the transport speed of micro-nano particles and achieve directional transport, it requires the preparation of complex interdigitated electrodes, and its directional transport depends on different interdigital electrode structures and cannot be realized on the same structure. Directional transport at any angle, and then it is impossible to control the starting point of transport

Neither of the above two methods can simultaneously realize the controllable starting point, transport speed, transport distance and transport direction of micro-nano particles, and the manufacturing process of the transport device is complicated, which has great limitations

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