Report title:Artificial structure sound field control

Time: October 15, 2018, 09:00 -11:00 am

Venue: Fudan University Science Building 4th Floor 423 (large meeting room)

Reporter: Zhu Xuefeng (Associate Professor/Doctoral Supervisor, School of Physics/Innovation Research Institute, Huazhong University of Science and Technology)

Inviter: Dean Ta

Summary:

Artificial structure can control sound source radiation and sound wave propagation. With the development of 3D printing technology, the realization of complex artificial structures has created new opportunities for the generation and regulation of special sound fields, and has become a hot research topic in the field of physical acoustics. Through the design of artificial structures, meaningful phenomena such as non-diffraction bending sound beams, acoustic focusing, and acoustic holography can be realized, which has potential application value in ultrasound medicine and national defense. For a long time, people have tried to make acoustic artificial structures practical, but they are restricted by their heavy rigid structure. Composite mesh of soft fiber/hard particles

Film materials combined with traditional Chinese hollow-out paper-cutting technology can be customized for flexible multi-functional ultra-thin artificial surfaces. Laser cutting technology is used to process a series of specific hollow patterns on the film to realize a series of cutting-edge acoustic phenomena such as sound vortex and sound wave super oscillation. Based on the electrospinning method, the composite film is expected to be mass produced at low cost.

Zhu Xuefeng

In 2005, he graduated from Huazhong University of Science and Technology with a double major in Biomedical Engineering/Optical Information Science and Technology. In 2011, he graduated from the Institute of Acoustics, Nanjing University. In the same year, he was selected for the Bird's Nest Talent Program of Huazhong University of Science and Technology, and from 2012 to 2014, he was engaged in research in the team of Academician Zhang Xiang of the University of California, Berkeley. Undertake the general fund of the National Natural Science Foundation of China and participate in the multidisciplinary research projects of the US Navy and major national projects. More than 50 academic papers have been published, including 6 in Nature Commun., 3 in Phys. Rev. Lett., 1 in Phys. Rev. X, and 1 in Adv. Funct. Mater. (Inside Front Cover). 4 Chinese invention patent applications or authorizations. In 2012, he was awarded the Excellent Doctoral Dissertation of Jiangsu Province. In 2013, he was nominated for National Excellent Doctoral Dissertation. In 2016, he was awarded the first prize of Natural Science Award of the Ministry of Education (6/12). In 2018, he was nominated by the Ministry of Education to participate in the second prize of National Natural Science Award (4 /5).