A5007245343- Metamaterials and Metasurfaces Applications
- Photonic and Optical Devices
- Antenna Design and Analysis
- Plasmonic and Surface Plasmon Research
- Advanced Antenna and Metasurface Technologies
- Photonic Crystals and Applications
- Near-Field Optical Microscopy
- Microwave Engineering and Waveguides
- Neural Networks and Reservoir Computing
- Random lasers and scattering media
- Semiconductor Quantum Structures and Devices
- Advanced Optical Imaging Technologies
- Energy Harvesting in Wireless Networks
- Advanced MIMO Systems Optimization
- Millimeter-Wave Propagation and Modeling
- Orbital Angular Momentum in Optics
- Aerogels and thermal insulation
- ZnO doping and properties
- Nanowire Synthesis and Applications
- Semiconductor Lasers and Optical Devices
- Fault Detection and Control Systems
- Optical Coatings and Gratings
- Advanced Measurement and Metrology Techniques
- Polydiacetylene-based materials and applications
- Optical properties and cooling technologies in crystalline materials
University of Chinese Academy of Sciences
2019-2024
Chinese Academy of Sciences
2019-2024
Kunming Institute of Botany
2024
University of California, Los Angeles
2022-2023
Xidian University
2011-2022
China Academy of Engineering Physics
2009-2022
California NanoSystems Institute
2022
University of Macau
2021-2022
Early Warning (United States)
2019
Changchun Institute of Optics, Fine Mechanics and Physics
2019
Metasurfaces hold great potentials for advanced holographic display with extraordinary information capacity and pixel sizes in an ultrathin flat profile. A dual-polarization channel to encode two independent phase profiles or spatially multiplexed meta-holography by interleaved metasurfaces are captivated popular solutions projecting vectorial images. However, the intrinsic limit of orthogonal polarization-channels, their crosstalk due coupling between meta-atoms, interleaving-induced...
Chiral nanophotonic devices are promising candidates for chiral molecule sensing, polarization of diverse nanophotonics, and display technologies. Active devices, where the optical chirality can be controlled by an external stimulus has triggered great research interest. However, efficient modulation been challenging. Here, we demonstrate switching extrinsic applied magnetic fields in a magnetoplasmonic metasurface device based on magneto-optical oxide material, Ce1Y2Fe5O12 (Ce:YIG). Due to...
Privacy protection is a growing concern in the digital era, with machine vision techniques widely used throughout public and private settings. Existing methods address this problem by, e.g., encrypting camera images or obscuring/blurring imaged information through algorithms. Here, we demonstrate design that performs class-specific imaging of target objects instantaneous all-optical erasure other classes objects. This diffractive consists transmissive surfaces structured using deep learning...
Metamaterials with artificial optical properties have attracted significant research interest. In particular, magnetic resonances non-unity permeability tensor at frequencies in metamaterials been reported. However, only diagonal elements of the demonstrated to date. A gyromagnetic non-zero off-diagonal has not observed frequencies. Here we report observation near-infrared wavelength range a magneto-plasmonic metamaterial. The element causes transverse magneto-optical Kerr effect under...
Multispectral stealth technology including terahertz (THz) band will play an increasingly important role in modern military and civil applications. Here, based on the concept of modularization design, two kinds flexible transparent metadevices were fabricated for multispectral stealth, covering visible, infrared (IR), THz, microwave bands. First, three basic functional blocks IR, are designed by using films. And then, via modular assembling, that is, adding or removing some constituent...
Ten structurally diverse A-seco-nortriterpenoids were isolated from the fruiting bodies of Ganoderma cochlear . Compounds 1–4 significantly inhibited tau pathology by inducing autophagy mediated AMPK-ULK1 pathway.
We report the observation of Josephson diode effect (JDE) in hybrid devices made from semiconductor InAs nanosheets and superconductor Al contacts. By applying an in-plane magnetic field ($B_{\mathrm{xy}}$), we detect non-reciprocal superconducting switching current as well retrapping current. The strength JDE depends on angle between bias ($I_{\mathrm{b}}$), reaching its maximum when $B_{\mathrm{xy}} \perp I_{\mathrm{b}}$ dropping to nearly zero $B_{\mathrm{xy}}\parallel I_{\mathrm{b}}$....
Polycrystalline zinc oxide (ZnO) thin-film transistors with a Ta <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sub> O xmlns:xlink="http://www.w3.org/1999/xlink">5</sub> high- k gate dielectric layer are fabricated by radio-frequency magnetron sputtering at room temperature. Under the optimal deposition conditions, devices show saturation mobility values over 50 cm <sup xmlns:xlink="http://www.w3.org/1999/xlink">2</sup> /Vs, an ON/OFF ratio...
We propose a new type of optical transistor for broadband amplification terahertz radiation. It is made graphene-superconductor hybrid, where electrons and Cooper pairs couple by Coulomb forces. The operates via the propagation surface plasmons in both layers, origin quantum capacitance graphene. leads to waves amplification, negative power absorption, as result, system yields positive gain, hybrid acts like an transistor, operating with light. can, principle, amplify even whole spectrum...
Active metasurfaces whose optical properties can be tuned by an external stimulus have attracted great research interest recently. Introduction of <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"> <mml:mrow> <mml:msub> <mml:mi>VO</mml:mi> </mml:mrow> <mml:mn>2</mml:mn> </mml:msub> </mml:math> phase change material in all-dielectric has been demonstrated to modulate the resonance wavelength and amplitude visible near-infrared range. In this study, we report a...
An antenna with a small nonground portion (56 × 5 mm <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sup> ) for 5.7 in octa-band mobile phones is presented this letter. Owing to the stair-like ground branch, width of (0.013 λg at frequency 0.8 GHz), and area clearance only 280 . By utilizing space value electric field, antenna's size can be reduced without worsening performance. The optimized structure generate high band that covers GSM1800,...
Heat assisted magnetic recording (HAMR) is a possible solution to further increase hard drive density. In HAMR system, an external light source employed locally heat up media. To achieve realistic near-field transducer (NFT) necessary focus optical fields down 10-20 nm in size. Different approaches excite NFTs have been investigated, including focusing of sources and coupling from dielectric waveguides. Here we demonstrate evanescent between series single mode waveguides adjacent plasmonic...
Nanopillars with diameters down to 20 nm were fabricated from InGaN/GaN multiple quantum wells (MQWs) by using a nanosphere–SiO2 double mask and inductively coupled plasma (ICP) etching. Clear photoluminescence (PL) signals of the nanopillars observed at room temperature, PL peak energy K showed large blueshift 220 meV compared that original MQWs. The exciton activation in temperature range 100 ∼ 300 increased 33 for MQWs 83 nanopillars. According measurements numerical simulation results,...
Two-dimensional (2D) photonic crystal patterns have been fabricated by an improved nanosphere lithography method. By introducing intermediary SiO2 layer between the self-assembled and substrate, this method can be applied to a wide range of materials without much concern for their surface hydrophilicity. The controllability has also investigated. air-filling factor easily tailored thinning polymer nanospheres in inductively coupled O2 plasma with controllable etch rate. Large-area ordered...
A nona-band antenna with a small nonground portion for full-view display mobile phones is proposed. The width of the quite narrow at only 2 mm. This consists mainly two driven strips and ground branches. An LC circuit utilized to control wave transmitted along broaden bandwidth. Then, three wide operating bands are generated by proposed reach desired low band (704-960 MHz), middle (1710-2690 high (3300-3600 MHz). As result, LTE700/GSM850/GSM900/GSM1800/GSM1900/UMTS/LTE2300/LTE2500 5G can be...
Holographic imaging plays an essential role in label-free microscopy techniques, and the retrieval of phase information a specimen is vital for image reconstruction holography. Here, we demonstrate recurrent neural network (RNN) based holographic methods that simultaneously perform autofocusing from multiple holograms captured at different sample-to-sensor distances. The acquired input are individually back propagated to common axial plane without any retrieval, then fed into trained RNN...
We studied the effects of medium microstructure on switching field (SF) and its distribution (SFD). Specifically, quasi-single crystalline polycrystalline Co/Pt based multilayers, chosen for high perpendicular anisotropy exchange coupling, have been prepared via sputtering technique. The was achieved by utilizing an Ag underlayer. Using electron-beam lithography, films were patterned into arrays small islands, ranging from 1 mum to 0.050 (=50 nm) in size. hysteresis loop both types film, as...
A novel design approach to excite multiple applicable modes under an inverted-L antenna (ILA) for bandwidth enhancement is proposed. First, the working principle about how with same order/electrical-length theoretically investigated based on equivalent transmission line model. Under this method, antenna, in theory, breaks down limitations number of resonances and available operating bands. Second, load parallel capacitor shift resonant desired band investigated, so as achieve...
Radiation efficiency is one of the key parameters for smartphone antennas. However, actual mechanism governing radiation remains unclear, and a few works have been published. This work an attempt to extend theory characteristic modes (TCMs) lossy antenna gaining insight into what causes variation realizing improvement. Compared with classical TCM, CM analysis (CMA) adopted in this has capacity handle antenna. By using such approach, we find, quite interestingly, that suppressing higher-order...