Short Bio:
Yue Li is currently an Associate Professor in the Department of Electronic Engineering at Tsinghua University. His current research interests include metamaterials, plasmonics, electromagnetics, nanocircuits, mobile and handset antennas, MIMO and diversity antennas, and millimeter-wave antennas and arrays. He has authored and coauthored over 170 journal papers and 50 international conference papers, and holds 25 granted Chinese patents. He is serving as the Associate Editor of IEEE Transactions on Antennas and Propagation, IEEE Antennas and Wireless Propagation Letters, and Microwave and Optical Technology Letters.
Title: Epsilon-near-zero Metamaterials
Abstract:
Metamaterials, or artificially structured composites, have triggered exciting opportunities to control electromagnetic waves. The epsilon-near-zero (ENZ) metamaterials, whose effective permittivity are close to zero, have drawn intensive interests over the past two decades. Here, we demonstrate the concept and exotic properties of ENZ metamaterials, and reveal their unique applications in wave engineering. Quite different from the conventional metamaterials consisting of periodically arranged meta-atoms, ENZ metamaterials can be constructed following a non-periodic paradigm, via the architectures of waveguides near the cut-off frequencies. The non-periodic essence of ENZ metamaterials can provide new degrees of freedom in many application scenarios. We envision the ENZ metamaterials can enrich the theory framework of artificially structured media and affect the applications in a wide range of fields, such as microwave, optics, material science, etc.
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