电纺直写技术利用外加电场力拉伸喷射溶液产生射流喷射，利用射流稳定直线阶段实现有序微纳结构的喷印；并在有机微纳系统、柔性电子器件等领域显示了巨大的发展潜力。约束射流鞭动、增强喷射稳定、提高直写微纳结构定位精度已成为电纺直写技术应用研究的关键。本文引入诱导针尖产生集中约束电场，以减弱干扰影响、减小射流摆动范围，实现直写射流的精确引导定位沉积。 设计带有针芯诱导功能的电纺直写喷头，利用针芯的尖端效应，增强喷嘴处局部电场对射流产生约束与引必作用，从而达到降低启动电压、降低射流的电荷密度的目的。针芯诱导作用下射流的摆动范围从15°降低到1°~3°，电纺直写纳米纤维最小直径151nm。讨论了电压、极间距...Electrohydrodynamic direct writting is a novel printting technology in Micro/Nano scale, during the direct writting, electric force stretch the chargeed polymer solution into a fix cone, which is named Taylor cone. A jet will be ejected from the Taylor cone when electric foce keep growing and break the balance on the surface of suspension. Then the jet was accelerated and splited into several smal...学位：工学硕士院系专业：物理与机电工程学院_精密仪器及机械学号：1992011115276
