A5074912368- Metamaterials and Metasurfaces Applications
- Advanced Antenna and Metasurface Technologies
- Plasmonic and Surface Plasmon Research
- Antenna Design and Analysis
- Photonic Crystals and Applications
- Orbital Angular Momentum in Optics
- Photonic and Optical Devices
- Terahertz technology and applications
- Millimeter-Wave Propagation and Modeling
- Microwave Engineering and Waveguides
- Microstructure and mechanical properties
- Optical Coatings and Gratings
- Solid State Laser Technologies
- Photorefractive and Nonlinear Optics
- Spectroscopy and Chemometric Analyses
- Advanced Fiber Laser Technologies
- Neural Networks and Reservoir Computing
- Thermal Radiation and Cooling Technologies
- Spectroscopy Techniques in Biomedical and Chemical Research
- Remote Sensing and Land Use
- Metal and Thin Film Mechanics
- Advanced Fiber Optic Sensors
- Additive Manufacturing Materials and Processes
- High Entropy Alloys Studies
- Microfluidic and Capillary Electrophoresis Applications
State Key Laboratory of Surface Physics
2015-2025
Fudan University
2016-2025
Collaborative Innovation Center of Advanced Microstructures
2016-2025
Chinese Academy of Sciences
2018-2025
Huashan Hospital
2012-2025
Institute of Optics and Electronics, Chinese Academy of Sciences
2018-2025
Mianyang Central Hospital
2025
University of Electronic Science and Technology of China
2016-2025
Shenzhen Institutes of Advanced Technology
2025
Fuzhou University
2025
We combine theory and experiment to demonstrate that a carefully designed gradient meta-surface supports high-efficiency anomalous reflections for near-infrared light following the generalized Snell's law, reflected wave becomes bounded surface as incident angle exceeds critical value. Compared previously fabricated meta-surfaces in infrared regime, our samples work shorter wavelength regime with broad bandwidth (750-900 nm), exhibit much higher conversion efficiency (∼80%) reflection mode...
The terahertz region is a special of the electromagnetic spectrum that incorporates advantages both microwaves and infrared light waves. In past decade, metamaterials with effective medium parameters or gradient phases have been studied to control waves realize functional devices. Here, we present new approach manipulate by using coding metasurfaces are composed digital elements. We propose general unit based on Minkowski closed-loop particle capable generating 1-bit (with two phase states 0...
Metasurfaces are ultrathin metamaterials consisting of planar electromagnetic (EM) microstructures (e.g., meta-atoms) with pre-determined EM responses arranged in specific sequences. Based on careful structural designs both meta-atoms and global sequences, one can realize homogenous inhomogeneous metasurfaces that possess exceptional capabilities to manipulate waves, serving as ideal candidates ultracompact highly efficient devices for next-generation integration-optics applications. In this...
We demonstrated an ultra-broadband, polarization-insensitive, and wide-angle metamaterial absorber for terahertz (THz) frequencies using arrays of truncated pyramid unit structure made metal-dielectric multilayer composite. In our design, each sub-layer behaving as effective waveguide is gradually modified in their lateral width to realize a wideband response by effectively stitching together the resonance bands different modes. Experimentally, five layer sample with total thickness 21 μm...
Abstract Metasurfaces are planar metamaterials exhibiting certain inhomogeneous phase distributions for transmitted or reflected waves, which can efficiently reshape the wave‐fronts of incident beams in desired manners based on Huygens principle. Due to their exotic abilities freely manipulate electromagnetic (EM) waves a flat and ultrathin platform, metasurfaces have attracted intensive attention recently, resulting numerous new concepts effects that could possibly find applications many...
With inherent orthogonality, both the spin angular momentum (SAM) and orbital (OAM) of photons have been utilized to expand dimensions quantum information, optical communications, information processing, wherein simultaneous detection SAMs OAMs with a single element single-shot measurement is highly anticipated. Here, azimuthal-quadratic phase metasurface-based photonic transformation (PMT) illustrated for vortex recognition. Since different vortices are converted into focusing patterns...
Modulating the phase of electromagnetic waves has many applications in photonic research. A new mechanism allows a thin graphene metasurface to reliably achieve an extremely large modulation THz radiation.
Photonic spin Hall effect (PSHE; i.e., spin‐polarized photons can be laterally separated in transportation) gains increasing attention from both science and technology, but available mechanisms either require bulky systems or exhibit very low efficiencies. Here it is demonstrated that a giant PSHE with ≈100% efficiency realized at certain meta‐surfaces deep‐subwavelength thicknesses. Based on rigorous Jones matrix analysis, general criterion to design realize 100%‐efficiency established. The...
We show that a flat metasurface with parabolic reflection-phase distribution can focus an impinging plane wave to point image in reflection geometry. Our system is much thinner than conventional geometric-optics devices and does not suffer the energy-loss issues encountered by many metamaterial working transmission designed realistic microwave samples performed near-field scanning experiments verify focusing effect. Experimental results are good agreement full simulations, model...
Surface plasmon polaritons (SPPs) and their low-frequency counterparts (i.e., spoof SPPs on artificial surfaces) have recently found numerous applications in photonics, but traditional devices to excite them (such as gratings prism couplers) all suffer from problems of inherent low efficiency because the generated can decouple, returning free space, reflections at device surface never be avoided. Here, we propose a new SPP excitation scheme based transparent gradient metasurface numerically...
Metasurfaces in metal/insulator/metal configuration have recently been widely used photonics research, with applications ranging from perfect absorption to phase modulation, but why and when such structures can realize what kind of functionalities are not yet fully understood. Here, based on a coupled-mode theory analysis, we establish complete diagram which the optical properties systems controlled by two simple parameters (i.e., intrinsic radiation losses), turn dictated...
Devices for manipulating spin-polarized light in $t\phantom{\rule{0}{0ex}}r\phantom{\rule{0}{0ex}}a\phantom{\rule{0}{0ex}}n\phantom{\rule{0}{0ex}}s\phantom{\rule{0}{0ex}}m\phantom{\rule{0}{0ex}}i\phantom{\rule{0}{0ex}}s\phantom{\rule{0}{0ex}}s\phantom{\rule{0}{0ex}}i\phantom{\rule{0}{0ex}}o\phantom{\rule{0}{0ex}}n$ (not reflection) mode are highly desired photonics research. To this end, the authors craft a Pancharatnam-Berry metasurface of subwavelength thickness $\ensuremath{\lambda}/8$...
Achieving multiple diversified functionalities in a single flat device is crucial for electromagnetic (EM) integration, but available efforts suffer the issues of thickness, low efficiency, and restricted functionalities. Here, general strategy to design high‐efficiency bifunctional devices based on metasurfaces composed by anisotropic meta‐atoms with polarization‐dependent phase responses described. Based derived criterions, two metadevices, working reflection transmission modes,...
Metasurfaces offer great opportunities to control light, but so far most ``metadevices'' work either in pure reflection or transmission mode, leaving half of electromagnetic (EM) space untapped. Thus the authors design meta-atoms with polarization-dependent and properties, efficiently manipulate EM waves mode. They fabricate three ultrathin devices multiple functionalities very high efficiencies on both sides. These findings significantly expand capabilities metasurfaces for more demanding...
Electromagnetic (EM) wave absorption plays a vital role in photonics. While metasurfaces are proposed to absorb EM waves efficiently, most of them exhibit limited bandwidth and fixed functionalities. Here, we propose broadband tunable terahertz (THz) absorber based on graphene-based metasurface, which is constructed by single layer closely patterned graphene concentric double rings metallic mirror separated an ultrathin SiO2 layer. Plasmonic hybridization between two significantly enlarges...
Dynamically controlling terahertz (THz) wavefronts in a designable fashion is highly desired practice. However, available methods working at microwave frequencies do not work well the THz regime due to lacking suitable tunable elements with submicrometer sizes. Here, instead of locally individual meta-atoms metasurface, we show that rotating different layers (each exhibiting particular phase profile) cascaded metadevice speeds can dynamically change effective Jones-matrix property whole...
Abstract Metasurfaces are thin two-dimensional metamaterial layers that allow or inhibit the propagation of electromagnetic waves in desired directions. For example, metasurfaces have been demonstrated to produce unusual scattering properties incident plane guide and modulate surface obtain radiation properties. These employed, for create innovative wireless receivers transmitters. In addition, recently proposed confine waves, thereby avoiding undesired leakage energy increasing overall...
Imaging polarimetry is one of the most widely used analytical technologies for object detection and analysis. To date, metasurface-based techniques are severely limited by narrow operating bandwidths inevitable crosstalk, leading to detrimental effects on imaging quality measurement accuracy. Here, we propose a crosstalk-free broadband achromatic full Stokes polarimeter consisting polarization-sensitive dielectric metalenses, implemented principle polarization-dependent phase optimization....
Abstract Vectorial optical fields (VOFs) exhibiting arbitrarily designed wavefronts and polarization distributions are highly desired in photonics. However, current methods to generate them either require complicated setups or exhibit limited functionalities, which is unfavorable for integration-optics applications. Here, we propose a generic approach efficiently arbitrary VOFs based on metasurfaces full-matrix yet inhomogeneous Jones-matrix distributions. We illustrate our strategy with...
Abstract Dynamical controls on terahertz (THz) wavefronts are crucial for many applications, but available mechanism requests tunable elements with sub-micrometer sizes that difficult to find in the THz regime. Here, different from local-tuning mechanism, we propose an alternative approach construct wavefront-control meta-devices combining specifically designed metasurfaces and globally tuned graphene layers. Coupled-mode-theory (CMT) analyses reveal serves as a loss drive whole meta-device...
Although microstrip reflectarrays/transmitarrays have been extensively studied in the past decades, most previous designs were confined to monofunctional operations based on either transmission or reflection. In this communication, we propose a scheme design multifunctional arrays that can simultaneously exhibit functionalities of reflectarray and transmitarray basis appealing feature polarizer discovered (i.e., constant phase difference between its cross-polarization copolarization...
The unrestricted control of circularly polarized (CP) terahertz (THz) waves is important in science and applications, but conventional THz devices suffer from issues bulky size low efficiency. Although Pancharatnam-Berry (PB) metasurfaces have shown strong capabilities to CP waves, transmission-mode PB realized the regime are less efficient, limiting their applications practice. Here, based on Jones matrix analysis, we design a tri-layer structure (thickness ~λ/5) experimentally demonstrate...