Exciton polaritons, the part-light and part-matter quasiparticles in semiconductor optical cavities, are promising for exploring Bose–Einstein condensation, non-equilibrium many-body physics and analogue simulation at elevated temperatures. However, a room-temperature polaritonic platform on par with the GaAs quantum wells grown by molecular beam epitaxy at low temperatures remains elusive... [Read More]
Electrical modulation of nonlinear optical signals is crucial for emerging applications in communications and photonic circuits. However, current methods of modulating the second-order optical susceptibility involve indirectly and inefficiently changing the third-order susceptibility. Here we show that electrical switching of the crystal structure of monolayer molybdenum ditelluride can be used to directly modulate the second-order susceptibility... [Read More]
Recently, higher-order topologies have been experimentally realized, featuring topological corner modes (TCMs) between adjacent topologically distinct domains. However, they have to comply with specific spatial symmetries of underlying lattices, hence their TCMs only emerge in very limited geometries, which significantly impedes generic applications. Here, we report a general scheme of inducing TCMs in arbitrary geometry based on Dirac vortices from aperiodic Kekul´e modulations... [Read More]
Biological ion channels rapidly and selectively gate ion transport through atomic-scale filters to maintain vital life functions. We report an atomic-scale ion transistor exhibiting ultrafast and highly selective ion transport controlled by electrical gating in graphene channels around 3 angstroms in height, made from a single flake of reduced graphene oxide... [Read More]
|J. Moon, M. Alahbakhshi, A. Gharajeh, Q. Li, Z. Li, R. Haroldson, S. Kwon, R. Hawkins, M. J. Kim, W. Hu, X. Zhang, A. Zakhidov and Q. Gu, "Quasi-CW Lasing from Directly Patterned and Encapsulated Perovskite Cavity at 260 K." ACS Photonics, 1, 2022.|
|R. Tao, K. Peng, L. Haeberle, Q. Li, D. Jin, G. R. Fleming, S. Kena-Cohen, X. Zhang and W. Bao, "Halide perovskites enable polaritonic XY spin Hamiltonian at room temperature." Nature Materials, 1, 2022.|
|S. Z. Uddin, N. Higashitarumizu, H. Kim, J. Yi, X. Zhang, D. Chrzan, and A. Javey, "Enhanced Neutral Exciton Diffusion in Monolayer WS2 by Exciton–Exciton Annihilation." ACS Nano, 16, 2022.|
|Y. Meng, X. Wu, Y. Shen, D. Liu, Z. Liang, X. Zhang & J. Li, "Non-Hermitian topological coupler for elastic waves." Science China, 65, 2021.|
|S. Yang, W. Bao, X. Liu, J. Kim, R. Zhao, R. Ma, Y. Wang & X. Zhang, "Subwavelength-scale lasing perovskite with ultrahigh Purcell enhancement." Matter, 4, 2021.|
Nov 2020: Dr. Sui Yang has been selected as the final winner of Rising Stars of Light 2020.
Jul 2020: Our lab alumnus Dr. Haokun Li has won the Award for Chinese Outstanding Self-financed Students Abroad.
Jul 2020: Dr. Sui Yang has won Microsystem & Nanoengineering Young Scientist Award.
Jul 2020: Our lab alumnus Prof. Cheng Gong has won IUPAP Young Scientst Prize in Semiconductor Physics of 2020.
Dec 2019: Our lab alumnus Prof. Junsuk Rho has won Korean PECASE Award.