Preparation method for micro-nano piezoelectric fiber

Abstract

The invention discloses a preparation method for a micro-nano piezoelectric fiber. The solution dissolved with piezoelectric material is extruded from a glass capillary micro needle through a micro injection pump; through the solvent evaporation in the moving and stretching processes of a three-dimensional operating platform, the micro-nano piezoelectric fiber is prepared; and the subsequential polarization is carried out on the micro-nano piezoelectric fiber. In the invention, by controlling the temperature and the stretching speed of the solution at the micro needle, and the viscoelasticityand the fluidity of a PVDF solution system, the structure scale of the prepared micro-nano piezoelectric fiber can be adjusted, so as to meet different needs for designs of a sensor. Compared with the traditional preparation method for the micro-nano piezoelectric fiber, the invention has simple procedure and convenient control and can accurately position the preparation position of the piezoelectric fiber.

Description

technical field [0001] The invention relates to a method for preparing a micro-nano-scale fiber structure, in particular to a preparation method based on oriented micro-nano-scale piezoelectric fibers. Background technique [0002] Microciliated receptors are a mechano-stimuli perception system ubiquitous in the animal world. These microciliated receptors range in diameter from nanometer size to a few micrometers and lengths from 20 μm to 1500 μm, allowing them to sense vibrations, forces, velocities and accelerations at different specific frequencies. With the continuous improvement of micro-processing technology, the research on the artificial micro-cilia structure by simulating the biological micro-cilia sensing system has become a research hotspot in the field of sensors and micro-manufacturing in recent years. Launched the Nanofiber project of the Carnegie Mellon Nano Robotics Laboratory in the United States, the Artificial hair receptor project of the Nanomanufacturin...

AI Technical Summary

Problems solved by technology

However, their respective limitations limit their application prospects in the field of sensors

The traditional etching microfabrication method is too complicated for the preparation of the suspended fiber structure; the time required for the phase separation and self-organization method is too lengthy; and the stretching filament method is a commonly used method in the industry for continuous preparation of chemical fibers. method, but the obtained chemical fibers are generally large in size; although the electrospinning method can prepare polymer micro-nano fibers with diameters ranging from several nanometers to several microns, it usually only obtains fibers that are randomly bent and continuous. non-woven mat structure without the ability to prepare fiber structures at specific locations

Images