In this report, we intend to introduce the research progress of our team in the application of vibration reduction and noise reduction in equipment based on metamaterials. Including five aspects, those are sound absorption, ventilation / flow noise reduction, vibration absorption and isolation. For sound absorption, the introduction of artificial acoustic soft boundaries has effectively enhanced the low broadband sound absorption amplitude of air and water sounds. Through multi-scale design, amplitude enhancement and significant expansion of the working frequency band have been achieved. Through space-shift design, the thickness of broadband sound absorption structures has been significantly reduced, and on-demand reverse customization design has been realized. For ventilation / flow noise reduction, ultra-thin sound-absorbing metamaterial are applied to the inner lining of pipe walls and ventilation grilles, achieving broadband noise reduction of air and water sounds, and efficient noise reduction under tangential flow. For vibration absorption, a broadband continuous adjustable design method and multi-scale design method for pure metal lightweight low-frequency vibration absorbing metamaterials have been proposed, revealing the energy dissipation mechanism of "leveraging force to exert force", and developing intelligent and rapid design software for vibration absorbing metamaterials. For vibration isolation, the "absorption instead of isolation" method is used to achieve an integrated design of load-bearing and isolation. Through the "high static and low dynamic" lightweight quasi-zero stiffness isolation design, multi-level high load-bearing and low broadband isolation is achieved, revealing the "force enhanced" isolation mechanism.

Dr. Fuyin Ma received his BS in Engineering Mechanics from the Taiyuan University of Science and Technology, MD in Automobile Engineering from the Shanghai University of Engineering Science, and PhD in Mechanical Engineering from Xi'an Jiaotong University. He served as Research Assistant in Department of Physics at the Hong Kong University of Science and Technology from 2015 to 2016, Lecturer in School of Mechanical Engineering at Xi’an Jiaotong University from 2016 to 2019, Associate Professor in School of Mechanical Engineering at Xi’an Jiaotong University from 2019 to 2023，and is currently the Professor in School of Mechanical Engineering at Xi’an Jiaotong University. Professor Ma has published over 60 refereed English journal publications (with more than 1800 cites, 3 Outside Covers, two Invited Tutorials, 2 ESI Highly Cited papers) and presented over 20 oral reports at international meetings and conferences (with 4 Keynote Reports and 12 Invited Speeches). He is an Associate Editor of Frontiers in Materials, Associate Editor of Frontiers in Mechanical Engineering, Advisory Panel members of Journal of Physics D: Applied Physics, peer review of Nature Communications, Advanced Materials, Small, Mechanical Systems and Signal Processing, International Journal of Mechanical Sciences, Composite Part B, Composite Structures, Applied Energy, Journal of Sound and Vibration, Journal of Physics D: Applied Physics, Smart Materials and Structures, Journal of Vibration and Control, Applied Acoustics, et al. 

Professor Ma's research is in the area of Vibration and Noise control. His research interesting includes acoustic metamaterials, acoustic metasurface, phononic crystal, time-reversal acoustics, acoustic focusing, acoustic imaging, vibration control, underwater acoustics, et al.