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个人信息Personal Information
教授 博士生导师
招生学科专业：
力学 -- 【招收博士、硕士研究生】 -- 航空学院
机械工程 -- 【招收博士、硕士研究生】 -- 航空学院
机械 -- 【招收博士、硕士研究生】 -- 航空学院
主要任职：Chang-Jiang Distinguished Professor
其他任职：IAAM Fellow; board member of Chinese Acoustical Society and member of its academic work committee, and deputy director of expert committees on electronic information materials and devices, and on Aerospace materials, Chinese national think tank for materials and devices.
性别：男
毕业院校：Tokyo Institute of Technology
学历：东京工业大学
学位：哲学博士学位
所在单位：Nanjing University of Aeronautics & Astronautics
办公地点：A18-1106
联系方式：ejhhu@nuaa.edu.cn; HP:18912946712 TEl:025-84891681
电子邮箱：
Analyses of acoustofluidic field in ultrasonic needle-liquid-substrate system for micro-/nanoscale material concentration
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所属单位：航空学院
发表刊物：MICROFLUIDICS AND NANOFLUIDICS
关键字：Ultrasound Vortex Micro-/nanoscale material Concentration FEM
摘要：The ultrasonic needle-liquid-substrate system, in which an ultrasonically vibrating steel needle is inserted into an aqueous suspension film of micro-/nanoscale materials on a nonvibration silicon substrate, has large potential applications in micro-/nanoconcentration. However, research on its detailed concentration mechanism and the structural parameters' effect on concentration characteristics has been scarce. In this work, the acoustic streaming field and acoustic radiation force in an ultrasonic needle-liquid-substrate system, which are generated by a vibrating needle parallel to the substrate, are numerically investigated by the finite element method. The computational results show that the ultrasonic needle's vibration can generate the acoustic streaming field capable of concentrating micro-/nanoscale materials, and the acoustic radiation force has little contribution to the concentration. The computation results well explain the experimental phenomena that the micro-/nanoscale materials can be concentrated at some conditions and cannot at others. The computational results clarify the effects of the distance between the needle center and substrate surface, the needle's radius, the water film's height and radius and the shape of the needle's cross section on the acoustic streaming field and concentration capability.
ISSN号：1613-4982
是否译文：否
发表时间：2018-04-01
合写作者：Tang, Qiang,Liu, Pengzhan
通讯作者：胡俊辉