A5089609880- Metamaterials and Metasurfaces Applications
- Plasmonic and Surface Plasmon Research
- Orbital Angular Momentum in Optics
- Advanced Antenna and Metasurface Technologies
- Photonic and Optical Devices
- Photonic Crystals and Applications
- Thermal Radiation and Cooling Technologies
- Mechanical and Optical Resonators
- Antenna Design and Analysis
- 2D Materials and Applications
- Electromagnetic Scattering and Analysis
- Quantum Mechanics and Non-Hermitian Physics
- Near-Field Optical Microscopy
- Acoustic Wave Phenomena Research
- Microfluidic and Bio-sensing Technologies
- Perovskite Materials and Applications
- Gold and Silver Nanoparticles Synthesis and Applications
- Advanced Fiber Laser Technologies
- Topological Materials and Phenomena
- Neural Networks and Reservoir Computing
- Random lasers and scattering media
- Quantum optics and atomic interactions
- Optical Coatings and Gratings
- Advanced Optical Imaging Technologies
- Advanced Materials and Mechanics
National University of Singapore
2016-2025
Institute of Disaster Prevention
2025
Suzhou Research Institute
2017-2025
Southwest Petroleum University
2025
State Key Laboratory of Industrial Control Technology
2023-2024
Fuzhou University
2018-2024
Zhejiang University of Technology
2023-2024
Monash University
2013-2024
Zhejiang University
2024
Weatherford College
2024
Abstract Benefitting from the flexibility in engineering their optical response, metamaterials have been used to achieve control over propagation of light an unprecedented level, leading highly unconventional and versatile functionalities compared with natural counterparts. Recently, emerging field metasurfaces, which consist a monolayer photonic artificial atoms, has offered attractive for shaping wave fronts by introducing abrupt interfacial phase discontinuity. Here we realize...
Surface topography and refractive index profile dictate the deterministic functionality of a lens. The polarity most lenses reported so far, that is, either positive (convex) or negative (concave), depends on curvatures interfaces. Here we experimentally demonstrate counter-intuitive dual-polarity flat lens based helicity-dependent phase discontinuities for circularly polarized light. Specifically, by controlling helicity input light, are interchangeable in one identical...
Metasurfaces have enabled a plethora of emerging functions within an ultrathin dimension, paving way towards flat and highly integrated photonic devices. Despite the rapid progress in this area, simultaneous realization reconfigurability, high efficiency, full control over phase amplitude scattered light is posing great challenge. Here, we try to tackle challenge by introducing concept reprogrammable hologram based on 1-bit coding metasurfaces. The state each unit cell metasurface can be...
Metasurfaces enable a new paradigm to control electromagnetic waves by manipulating subwavelength artificial structures within just fraction of wavelength. Despite the rapid growth, simultaneously achieving low-dimensionality, high transmission efficiency, real-time continuous reconfigurability, and wide variety reprogrammable functions is still very challenging, forcing researchers realize one or few aforementioned features in design. This study reports reconfigurable Huygens' metasurface...
We introduce the first plasmonic palette utilizing color generation strategies for photorealistic printing with aluminum nanostructures. Our work expands visible space through spatially mixing and adjusting nanoscale spacing of discrete With as material, we achieved enhanced durability dramatically reduced materials costs our nanostructures compared to commonly used such gold silver, well size regimes scalable higher-throughput approaches photolithography nanoimprint lithography. These...
Invisibility has attracted intensive research in various communities, e.g., optics, electromagnetics, acoustics, thermodynamics, dc, etc. However, many experimental demonstrations have only been achieved by virtue of simplified approaches due to the inhomogeneous and extreme parameters imposed transformation-optic method, usually require a challenging realization with metamaterials. In this Letter, we demonstrate bilayer thermal cloak made bulk isotropic materials, it validated as an exact...
Abstract Metasurfaces, as the ultrathin version of metamaterials, have caught growing attention due to their superior capability in controlling phase, amplitude and polarization states light. Among various types metasurfaces, geometric metasurface that encodes a or Pancharatnam–Berry phase into orientation angle constituent meta-atoms has shown great potential light both linear nonlinear optical regimes. The robust dispersionless nature simplifies wave manipulation tremendously. Benefitting...
Abstract Conventional microwave imagers usually require either time-consuming data acquisition, or complicated reconstruction algorithms for post-processing, making them largely ineffective complex in-situ sensing and monitoring. Here, we experimentally report a real-time digital-metasurface imager that can be trained to generate the radiation patterns required by machine-learning optimized measurement modes. This is electronically reprogrammed in real time access solution an entire set,...
Novel ultrathin dual-functional metalenses are proposed, fabricated, tested, and verified in the microwave regime for first time. The significance is that their anomalous transmission efficiency almost reaches theoretical limit of 25%, showing a remarkable improvement compared with earlier metasurface designs less than 5% coupling efficiency. planar metalens proposed empowers significant reduction thickness, versatile focusing behavior, high simultaneously.
A multifocus optical vortex metalens, with enhanced signal-to-noise ratio, is presented, which focuses three longitudinal vortices distinct topological charges at different focal planes. The design largely extends the flexibility of tuning number and their positions for circularly polarized light in a compact device, provides convenience nanomanipulation vortices.
The spin Hall effect (SHE) of light, as an analogue the SHE in electronic systems, is a promising candidate for investigating semiconductor spintronics/valleytronics, high-energy physics and condensed matter physics, owing to their similar topological nature spin-orbit interaction. light exhibits unique potential exploring physical properties nanostructures, such determining optical thickness, material metallic magnetic thin films even atomically two-dimensional materials. More importantly,...
Thermal camouflage and cloaking can transform an actual heat signature into a pre-controlled one. A viable recipe for controlling manipulating signatures using thermal metamaterials to empower in conduction is demonstrated. The of the object thus metamorphosed perceived as multiple targets with different geometries compositions, original cloaked. As service our authors readers, this journal provides supporting information supplied by authors. Such materials are peer reviewed may be...
Metasurfaces, two‐dimensional versions of metamaterials, retain the great capabilities three‐dimensional counterparts in manipulating electromagnetic wave behaviors, while reducing challenges fabrication. By judiciously engineering parameters individual building blocks (such as geometry, size, and material) selecting specific design algorithms, metasurfaces are promising to replace conventional elements nanoplasmonic/photonic devices. Significantly, such concept can be readily promoted other...
Usually a light beam pushes particle when the photons act upon it. We investigate optical forces by nonparaxial gradientless beams and find that can drag suitable particles all way towards source. The major criterion of realizing backward dragging force is strong nonparaxiality beam, which contributes to pulling owing momentum conservation. Bessel be manipulated possess along both radial longitudinal directions, i.e., "tractor beam" with stable trajectories achieved.
Two highly coupled plasmonic metasurfaces exhibit much higher conversion efficiency and extinction ratio than individual ones.
The strong optical chirality arising from certain synthetic metamaterials has important and widespread applications in polarization optics, stereochemistry spintronics. However, these intrinsically chiral are restricted to a complicated three-dimensional (3D) geometry, which leads significant fabrication challenges, particularly at visible wavelengths. Their planar two-dimensional (2D) counterparts limited by symmetry considerations operation oblique angles (extrinsic chirality) possess...
There is an increasing need to remotely monitor people in daily life using radio-frequency probe signals. However, conventional systems can hardly be deployed real-world settings since they typically require objects either deliberately cooperate or carry a wireless active device identification tag. To accomplish complicated successive tasks single real time, we propose the simultaneous use of smart metasurface imager and recognizer, empowered by network artificial neural networks (ANNs) for...
The theory of compressed sampling (CS) indicates that exact recovery an unknown sparse signal can be achieved from very limited samples. For inversed synthetic aperture radar (ISAR), the image a target is usually constructed by strong scattering centers whose number much smaller than pixels plane. This sparsity ISAR intrinsically paves way to apply CS reconstruction high-resolution imagery. CS-based imaging with pulses developed, and it performs well in case high signal-to-noise ratios....