Electrospinning direct-writing nozzle capable of controlling starting and stopping

Abstract

The invention provides an electrospinning direct-writing nozzle capable of controlling starting and stopping, relating to an electrospinning direct-writing nozzle and providing an electrospinning direct-writing nozzle which can automatically controls starting and stopping, reduce the spraying opening voltage, organically combines the spraying and the direct-writing pattern characteristic and completes direct writing of micronano structures in complex patterns. The electrospinning direct-writing nozzle is provided with a hollow sleeve with a nozzle, an adjusting plug with threads, a coil, an armature, a return spring, a probe and an exhaust pipeline, wherein the front end of the hollow sleeve with the nozzle is provided with a spray orifice and an injection hole; the adjusting plug with the threads is arranged at the rear end of the hollow sleeve with the nozzle; the coil is sheathed at the outer side of the hollow sleeve with the nozzle; the armature is arranged in the hollow sleeve with the nozzle; the probe is fixedly connected with the armature; the front end of the probe is positioned in the spraying orifice at the front end of the hollow sleeve with the nozzle, and the rear end of the probe is fixedly connected with one end of the return spring; the other end of the return spring is fixedly connected with the inner end of the adjusting plug with the threads; the exhaust pipeline is arranged on the adjusting plug with the threads; and the inner end of the exhaust pipeline is communicated with the hollow sleeve with the nozzle, and the outer end of the exhaust pipeline is communicated with the outside.

Description

technical field [0001] The invention relates to a micro-nano structure direct-writing nozzle based on near-field electrospinning technology, in particular to a nozzle device capable of realizing start-stop control of the electrospinning direct-writing process. Background technique [0002] The patterning of micro-nano structures has always been the most critical link in the field of microelectronics and micro-nano-electromechanical systems (N / MEMS), so it has attracted extensive attention from industry and academia. At present, the relatively mature technologies mainly include electron beam, ion beam, X-ray and other photolithography techniques and nanoimprinting methods, but these methods require complex processes, expensive prices, and high development costs, which are difficult to apply to large areas or flexible substrates. The field of fabrication of non-silicon micro-nano devices such as devices. For this reason, Sun Daoheng et al. (Sun Daoheng, Chang Chieh, Li Sha, e...

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Problems solved by technology

[0005] The purpose of the present invention is to overcome the shortcomings of the existing near-field electrospinning direct-writing technology, such as the high turn-on voltage of the hollow nozzle, the inability to obtain thinner nanofibers, and the difficulty in realizing complex pattern direct-writing, and to provide a method that can Automatic start-stop control, reduce the opening voltage of the spray, realize the organic combination of the spray process and the direct writing pattern characteristics, and complete the direct writing of the micro-nano structure of the complex pattern. The electrospinning direct-writing nozzle with start-stop control

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