Short Bio:

Prof. Kuang ZHANG received his B.Sc. in Electronics and information Engineering, M. Eng. In electrical engineering, and Ph.D. in Electrical and Computer Engineering, all at Harbin Institute of Technology (HIT), Harbin, China in 2005,2007, and 2011, respectively. He worked as a Visiting Professor at University of Wisconsin-Madison in U.S., from 2015 to 2016, as a Guest Professor at Université Paris Nanterre in France during 2018. Since 2010, he has been with the Dept. of Microwave Engineering, School of Electronics and Information Engineering at HIT, China, where he is currently a full professor.
As the first author / corresponding author, Prof. ZHANG has published 37 papers in international peer-reviewed journals, including Nature Communications, Advanced Materials, IEEE Transactions on Antennas and Propagation, etc. All these papers have been cited for more than 2500 times in Google Scholar, and his H-index is 27. Among these papers, 6 papers have been indexed as ESI highly cited paper, 1 paper has been indexed as ESI Hot paper. He has been serving as an editorial board member for Scientific Reports (Nature Publishing Group) since 2014. His recent research interests are mainly in metamaterals and metasurface, novel antennas and manipulations of electromagnetic waves. He is also a member of IEEE and the secretary of IEEE Harbin EMC/AP/MTT joint society chapter. He worked as a TPC member for international conferences for several times. He is also invited to give invited talks in many conferences, including META 15, IMWS-AMP 2016, META 17, etc.

Title: At will energy distribution among diffraction patterns with nonlinear phase gradient metasurfaces

Abstract:
It has been a long-standing goal to achieve the excitation of arbitrary beams. In early research, the symmetrical splitting of beams was realized by Damman gratings and continuous gratings in optical region. With the in-depth study of metasurface, the diffraction beams are gradually excited by discrete elements, such as phase gradient metasurfaces (PGMs) or metagratings (MGs). However, most studies only focus on symmetrical diffraction orders. Though MGs can excite different propagating diffraction orders with equally energy, it is still difficult to excite beams with different energy. To address the challenges, the concept of nonliear phase gradient is introduced to control diffraction patterns, which can provide the sufficient degree of freedom and ensure the metasuface lossless. A variety of diffraction situations are taken into consideration. The simulated and measured far-field patterns are in good agreement with theoretical predictions. The proposed method paves the way for wireless communication applications and can be extend to other frequency region.