A5101571738- Plasmonic and Surface Plasmon Research
- Metamaterials and Metasurfaces Applications
- Photonic Crystals and Applications
- Microwave Engineering and Waveguides
- Thermal Radiation and Cooling Technologies
- Photonic and Optical Devices
- Advanced Antenna and Metasurface Technologies
- Multilevel Inverters and Converters
- Microwave and Dielectric Measurement Techniques
- Electromagnetic Simulation and Numerical Methods
- Radio Frequency Integrated Circuit Design
- Gold and Silver Nanoparticles Synthesis and Applications
- Electric Motor Design and Analysis
- Terahertz technology and applications
- GaN-based semiconductor devices and materials
- Electromagnetic Scattering and Analysis
- Spectroscopy and Laser Applications
- Nanoparticle-Based Drug Delivery
- Induction Heating and Inverter Technology
- Optical Network Technologies
- Energetic Materials and Combustion
- Advanced Polymer Synthesis and Characterization
- Supramolecular Self-Assembly in Materials
- Power Transformer Diagnostics and Insulation
- Nanocluster Synthesis and Applications
Fudan University
2007-2024
Southeast University
2024
Hangzhou Dianzi University
2022-2024
Beijing University of Technology
2023
Shanghai Normal University
2021-2023
The First Affiliated Hospital, Sun Yat-sen University
2022
Zhongshan Hospital
2022
Sun Yat-sen University
2022
Peking University
2022
Naval University of Engineering
2022
If we are to utilize deep-subwavelength plasmonic waveguides in photonic integrated circuit applications, highly efficient three-dimensional (3D) mode conversion must be achieved between and conventional dielectric such as Si-wire waveguides. Here, describe 3D from a waveguide (the core size is 400 nm×200 nm) slot air 50 nm×20 nm) with coupling loss of 1.7 dB. Our converter has only two-dimensional laterally tapered structure even the presence large discontinuity thickness, can still...
Abstract High performance broadband absorbers in the midinfrared atmospheric transparency windows are of great importance various applications, such as energy harvesting, photodetection, radiative cooling, and stray light elimination. In recent years, efforts have been made to develop using plasmonic nanostructured resonators infrared regime. Although these approaches promise distinct advantages enhancement, they still suffer several obstacles, e.g., limitations on sample size, bandwidth,...
Thermal radiation with narrow bandwidth and well-defined emission directions is highly sought after for a variety of applications, ranging from infrared sensing thermal imaging to thermophotovoltaics. Here, large-area (4-inch-diameter) long-wavelength emitter presented, which spectrally selective, directional, easily fabricated. The basic structure the proposed composed truncated one-dimensional photonic crystal continuous metallic film separated by dielectric spacer. Experimental results...
In this work, plasmonic metasurfaces with abrupt phase discontinuities operating in high order modes are investigated for manipulating the wavefront of light. We first design two types meta-super-cells consisting V-shaped antennas shift coverage larger than 2π. And then, we create linear gradient phased using designed cells, which exhibit exceptional abilities light-steering functioned as meta-echelette gratings diffraction modes, may be valuable resolution spectrographs and advantage to...
This letter proposes two compact folded spoof surface plasmon polariton (SSPP) transmission lines (TL) with single-sided grooves (Type A) and double-sided B), their cut-off frequencies are 17.55 GHz 19.52 GHz, respectively. Due to large number of units, the proposed SSPP TLs have steep sideband excellent upper band suppression (< −48 dB). The folding solution could reduce lateral size nearly 2/5 original one, a certain extent solve layout difficulties associated traditional due slender...
This paper presents a microwave sensor for detecting edible oils based on spiral spoof localized surface plasmon (SLSP) resonator combined with stepped structure. The structure is able to concentrate the electric field in middle substrate, while SLSP has exceptional ability collect dimensions only few tens of wavelengths. electrical properties and are investigated. effective permittivity proposed captured, circuit model developed explain its operating principle. demonstrates an ultra-high...
Abstract The development of novel approaches that control absorption and emission operating in the long wavelength infrared (LWIR) spectral region is fundamental importance for many applications, such as remote temperature sensing, thermal imaging, radiation cooling, environmental monitoring, night vision. A high performance plasmonic metasurface–based absorber LWIR presented. In design, a pyroelectric thin film, poly(vinylidene fluoride‐trifluoroethylene) (P(VDF‐TrFE)) copolymer, introduced...
Abstract Wide gamut and angle-insensitive structural colors are highly desirable for many applications. Herein, a new type of lithography-free, planar bilayer nanostructures generating is presented, which basically composed deep-subwavelength, absorbing dielectric layer on an opaque metallic substrate. Experimental results show that galaxy brilliant can be generated by our structures, cover ∼50% the standard red–green–blue color space adjusting nanostructure dimensions. The appearances...
A high-sensitivity differential microwave sensor based on spiral spoof localized surface plasmon (SLSP) is designed for liquid characterization. Two polydimethylsiloxane (PDMS) microfluidic channels are attached to the etched SLSP resonators. The resonator structure has a diameter of less than 1/38 wavelength, thus possessing deep sub wavelength property and strong binding ability electric field. field concentrated slot allow field–liquid interaction. configuration employed suppress...
We show that a metallic waveguide behaves as an electric (magnetic) plasma for transverse-electric (transverse-magnetic) polarized electromagnetic (EM) waves at frequencies below cutoff value. Inserting anisotropic resonance structures of either or magnetic type into waveguide, we find extraordinary transmissions EM with different polarizations through the well waveguide’s value, following two mechanisms. Microwave experiments, in excellent agreements finite-different-time-domain...
We employed both theoretical calculations and experiments to study the nonlinear responses in optical metamaterials. The spectra of second-harmonic generations measured on a fishnet metamaterial are quantitative agreements with based full-wave numerical simulations combined field integrations, exhibiting ~80 times enhancements at magnetic resonance frequency. Our explained several interesting features observed experimentally, suggested an optimal structure yield strongest signals.
Spectrally selective thermal emitters with narrow bandwidth and high temperature stability are of great interest for a variety applications in the mid-infrared region, ranging from imaging infrared sensing to high-temperature thermophotovoltaics. Herein, lithography-free, wafer-scale, aperiodic mid-wave narrowband emitter is proposed optimized by inverse design. Experimental results show that fabricated prototype exhibits emissivity peak 90% around 3.82 μm up 1,200 K. Numerical simulation...
We established a generalized tight-binding method (TBM) to study the coupling effects in metamaterials. All parameters involved our theory can be calculated from first principles, and is applicable general photonic systems with both dielectric magnetic materials. As an illustration, we applied cutoff waveguides loaded resonant electric/magnetic not only accurately computed strengths between two metamaterials, but also revealed number of interesting coupling-induced phenomena. Microwave...
A full-vector spectral element method (SEM) is applied to model and simulate surface plasmon-polariton (SPP) waveguides. Gauss-Lobatto-Legendre (GLL) polynomials are used construct higher-order basis functions achieve accuracy. discretization scheme featuring a nonuniform mesh with extra elements near the metal-dielectric interface proposed capture waveguide configuration dramatical mode field variations of SPP waveguide. The studies on accuracy distribution show that SEM highly efficient...
We rigorously derived an effective model to describe the plasmonic couplings between nanoparticles of general shape. In addition usual electric/magnetic dipolar interactions, also contains a radiation-correction term and cross-interacting term. The was justified by full-wave simulations in different coupled systems, for which interplays among these terms generate fascinating behaviors. As application our theory, we show that coupling strength certain can be tuned through varying orientations...
Compared with the traditional induction motors, five-phase squirrel cage motor (FSCIM) have advantages of lower torque ripple and single-phase power, flexible control strategy, higher power density fault-tolerant operation, which has been widely applied on electrical vehicles, rail transit, underwater vehicles so on. This paper presents an analytical design optimization method based coupling electromagnetic equivalent circuit (EEC) differential evolution algorithm (DEA). Furthermore,...
Here we present an alternative approach to design a free-standing transparent conducting device for wide-angle and polarization-insensitive incidence of electromagnetic waves at near-infrared frequencies. The targeted system is realized by depositing periodic metallic patches on the top bottom continuous metal film. Based optimization structure parameters, whole can suppress reflection enhance transmission. obtained high transmission designed under condition effective medium limit be...
To study the effects of different structures (solid/hollow) and pore diameters (300/600 μm) on bone ingrowth.Porous titanium alloy scaffolds (3.2 * 10.5 mm) were printed using electron beam melting. The implants divided into either Hollow or Solid Group. upper half each implant was with a diameter 600 μm while bottom 300 μm. Visualization structural morphology done Scanning Electron Microscope (SEM). Cell proliferation evaluated cell counting kit-8 assay live/dead staining assay. lateral...
Transparent heat mirrors have been attracting a great deal of interest in the last few decades due to their broad applications, which range from solar thermal convection energy-saving. Here, we present flexible Polyethylene terephthalate/Ag-doped Indium tin oxide/Polydimethylsiloxane (PAIP) thin film that exhibits high transmittance visible and low emissivity infrared region. Experimental results show temperature sample can be as 108 °C, is ~23 °C higher than blackbody control under same...
Two-photon resonance transition technology has been proven to have a wide range of applications,it's limited by the available wavelength commercial lasers.The application optical comb with direct two-photon (DTPT) will not be restricted cw lasers.This article further theoretically analyze dynamics effects DTPT process driven frequency combs. In three-level atomic system, population particles and amount momentum transfer on atoms are increased compared that DTPT-free process. The 17%...
In this paper, a miniaturized folded SLSP microwave microfluidic sensor for detecting liquid permittivity is proposed. The has single-layer structure and fed with microstrips coupling branches. quarter-mode design can produce resonance corresponding to the full-mode case while reducing size amount of liquid. By introducing additional capacitance in vertical direction, enhances slow wave effect further reduces resonator. A PDMS chip channel placed above injection sample would cause frequency...