| Biography | |
|---|---|
 Prof. Junhui Hu Nanjing University of Aeronautics and Astronautics, China |
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| Title: Micro/nano manipulations by low-frequency ultrasound | |
| Abstract: Ultrasonic micro/nano manipulation is an actuation technology, which employs the nonlinear and linear effects of ultrasonic vibration in fluid, solid and gas to implement the functions including, but not limited to capture, concentration (or enrichment), decorating, driving, filtration and sorting of micro/nano scale materials. The nonlinear and linear effects of ultrasound utilized in the ultrasonic micro/nano/molecular manipulation include the acoustic radiation pressure, acoustic streaming, acoustic cavitation, ultrasonic vibration velocity and sound pressure. It is one of the promising technologies in biomedical sample treatment, micro/nano fabrication process and chemical reaction catalyses. In this lecture, low-frequency ultrasonic vibration/field based micro/nano concentration (enrichment) methods, micro/nano tweezers, nano fabrication process and gas molecule manipulation method, which have been proposed and developed by the speaker’s group in recently years, are presented through illustrating the structures, working principles and characteristics of the ultrasonic devices. Furthermore, applications of some of those manipulation methods in the nano sensor fabrication and high-performance gas sensor/electronic nose systems are experimentally demonstrated. The experimental and theoretical work on the manipulations, implemented by the speaker’s group, has indicated that the low-frequency ultrasonic micro/nanor manipulation methods may provide a promising way to facilitate the fabrication of high-performance nano-devices and nano composite materials, and to construct high-performance sensing systems. The contents of this lecture include the following five parts: introduction of ultrasonic micro/nano manipulations, ultrasonic micro/nano concentration, ultrasonic micro/nano tweezers, ultrasonic nano fabrication, and ultrasonically catalyzed gas sensors/electronic noses. | |
| Biography: Junhui Hu received his Ph.D. Degree from Tokyo Institute of Technology, Tokyo, Japan, in 1997, and B. E. and M. E. degrees in electrical engineering from Zhejiang University, Hangzhou, China, in 1986 and 1989, respectively. Currently he is a Chang-Jiang Distinguished Professor, China, and the deputy director of State Key Laboratory of Mechanics and Control of Mechanical Structures (NUAA), China. Dr. Hu was an assistant and associate professor at Nanyang Technological University, Singapore, from 2001 to 2010. His research interest is in ultrasonic sensors and actuators, nano fabrication, ultrasonic micro/nano manipulations, etc. He is the author and co-author of more than 300 papers and disclosed patents, including more than 100 full research papers published in SCI journals and 1 editorial review in an international journal. He is also the sole author of monograph book “Ultrasonic Micro/Nano Manipulations: Principles and Examples” (2014, World Scientific, London New Jersey Singapore). Dr. Hu won the Paper Prize from the Institute of Electronics, Information and Communication Engineers (Japan) as the first author in 1998, and his research work has been highlighted by 7 international scientific media with a total view number > 35000 (Mendeley) He is an editorial board member of four international journals, and board member of Chinese Acoustical Society. He was once awarded the title of valued reviewer by Sensors and Actuators A: Physical and Ultrasonics. He has given 18 keynote/invited lectures at international conferences, and is the chairman of International Conference on Mechanical Control and Automation 2016, International Conference on Electric Engineering and Automation Control 2017, and honorary chairman of International Workshop on Piezoelectric Materials and Applications in Actuators 2011. | |
