菲涅尔透镜聚焦声泳打印装置设计及实验研究  

Design and experimental study of acoustophoretic printing using fresnel lenses

作　　者：舒霞云 欧阳丽[1,2] 常雪峰 徐钢 SHU Xiayun;OU Yangli;CHANG Xuefeng;XU Gang(School of Mechanical&Automation Engineering,Xiamen University of Technology,Xiamen 361024,China;Key La boratory of Precision Actuation&Transmission,Xiamen University of Technology,Xiamen 361024,China;Xiamen Key Laboratory of Intelligent Manufacturing Equipment,Xiamen 361024,China;College of Marine Equipment and Mechanical Engineering,Jimei University,Xiamen 361024,China)

机构地区：[1]厦门理工学院机械与汽车工程学院,厦门361024 [2]精密驱动与传动福建省高校重点实验室(厦门理工学院),厦门361024 [3]厦门市智能制造高端装备研究重点实验室,厦门361024 [4]集美大学海洋装备与机械工程学院,厦门361024

出　　处：《应用声学》2023年第6期1244-1255,共12页Journal of Applied Acoustics

基　　金：国家自然科学基金项目(51975501)。

摘　　要：针对现有的喷墨打印技术需根据喷印材料的特性定制而较难直接用于不同材料打印的问题,设计了一种基于菲涅尔透镜聚焦的声泳打印装置。该装置由超声发生器、超声换能器、菲涅尔透镜以及供液系统组成。首先,利用多物理场耦合仿真软件模拟液滴在声辐射力作用下的滴落过程,并分析了喷嘴到基底距离、菲涅尔透镜厚度及基底不同边界等因素对声场压力分布的影响,以及声场压力、喷嘴直径及材料黏度对液滴喷射过程的影响。其次,采用构建的声泳打印装置进行喷射成滴实验,通过调整超声发生器输出功率实现了不同黏度的聚乙二醇溶液的喷射以及UV胶的喷射。实验结果表明:该微滴喷射系统能产生一致性较好的微滴,喷印出的微透镜尺寸波动范围在2%以内,证明了该装置的稳定性以及实现了不同材料微滴喷射的可行性。An acoustophoretic printing device based on Fresnel lens has been designed to address the existing problem that inkjet printing technology needs to be customized according to the properties of the material.The device consists of an ultrasonic generator,an ultrasonic transducer,a Fresnel lens and a liquid supply system.Firstly,multi-physicsfield coupling simulation software is used to simulate the drop process of droplets under the action of acoustic radiation force,and the influence of factors such as the distance from the nozzle to the substrate,the thickness of the Fresnel lens and the different boundaries of the substrate on the soundfield pressure distribution,as well as the soundfield pressure,nozzle and other factors are analyzed.Influence of diameter and material viscosity on droplet ejection process.Secondly,the constructed acoustophoresis printing device was used to carry out the spray droplet experiment.By adjusting the output power of the ultrasonic generator,the spraying of polyethylene glycol solutions of different viscosities and the spraying of UV glue were realized.The experimental results show that the droplet ejection system can produce droplets with good consistency,and the sizefluctuation range of the printed microlenses is within 2%,which demonstrates the stability of the device and the feasibility of realizing droplet ejection of different materials.

关 键 词：微滴喷射 声泳打印 菲涅尔透镜 超声聚焦 

分 类 号：TB559[理学—物理]