A5010521755- Plasmonic and Surface Plasmon Research
- Photonic and Optical Devices
- Photonic Crystals and Applications
- Metamaterials and Metasurfaces Applications
- Microwave Engineering and Waveguides
- Advanced Antenna and Metasurface Technologies
- Antenna Design and Analysis
- Optical Coatings and Gratings
- Gold and Silver Nanoparticles Synthesis and Applications
- Antenna Design and Optimization
- Millimeter-Wave Propagation and Modeling
- Silicon Nanostructures and Photoluminescence
- Plant chemical constituents analysis
- Thermal Radiation and Cooling Technologies
- Full-Duplex Wireless Communications
- Advanced Sensor and Energy Harvesting Materials
- Fungal Plant Pathogen Control
- Gyrotron and Vacuum Electronics Research
- Energy Harvesting in Wireless Networks
- Neural Networks and Reservoir Computing
- Semiconductor materials and devices
- Energy Load and Power Forecasting
- Advancements in Semiconductor Devices and Circuit Design
- Particle accelerators and beam dynamics
- Radio Frequency Integrated Circuit Design
Southeast University
2017-2024
State Key Laboratory of Millimeter Waves
2018-2024
Southeast University
2023
Shanghai Zhangjiang Laboratory
2023
Shenzhen Technology University
2020
Laboratoire de Génie Électrique et Électronique de Paris
2019
Sorbonne Université
2019
Anhui University
2015
properties of the optical surface plasmons in microwave and terahertz frequencies using subwavelength artificial structures to construct negative permittivity.The spoof also benefit from realization ultrathin corrugated metallic strips [14], as they are compatible with printed circuit boards (PCBs) integrated technologies.Since propagating localized were experimentally realized PCBs 2013 2014 [14, 15], this area flourishes prospective applications emerging circuits, sensing, wireless...
Abstract Perfect lenses, superlenses and time-reversal mirrors can support spatially separate evanescent waves, which is the basis for detecting subwavelength information in far field. However, inherent limitations of these methods have prevented development systems to dynamically distinguish subdiffraction-limited signals. Utilizing physical merits spoof surface plasmon polaritons (SPPs), we demonstrate that signals be transmitted on planar integrated SPP channels with low loss, channel...
Digital coding and digital modulation are the foundation of modern information science. The combination technology with metamaterials provides a powerful scheme for spatial temporal controls electromagnetic waves. Such technique, however, has thus far been limited to control free-space light. Its application plasmonics shape subwavelength fields still remains elusive. Here, we report design experimental realization tunable conformal plasmonic metasurface, which is capable digitally...
In this paper, we introduce a new scheme to construct the band-pass tunable filter based on reconfigurable spoof surface plasmon polaritons (SPPs), whose cut-off frequencies at both sides of passband can be tuned through changing direct current (DC) bias varactors. Compared traditional technology (e.g. microstrip filters), SPP structure provide more tight field confinement and significant enhancement, which is extremely valuable for many system applications. order achieve scheme, proposed...
In the optical regime, surface plasmon polaritons (SPPs) are attractive topics for physicists, chemists, biologists, and material scientists [1]-[13]. The concept of SPPs, which is widely applied in field science, can be dated to 1950s [14]. SPPs wave modes that propagate along interface between a dielectric conductor (usually metal) at frequencies. They formed by interaction light or other electromagnetic (EM) waves trapped on free electrons metal [1], [2]. Because this interaction, EM...
We present a new method to design miniaturized antennas using corrugated microstrip (CM) line, which shows good slow wave characteristic in the required frequency band. To achieve radiating behavior and low profile simultaneously, CM is employed as resonating part of antenna. The impact propagation constant on antenna discussed detail. designed measured verify feasibility method. results show that proposed can beamwidth 70° E-plane 75° H-plane with gain tolerance 3 dB, realized peak level at...
The spoof surface plasmon polariton (SPP) waveguide, which could support well-confined waves along an ultrathin corrugated metallic strip, is one of the most advantageous candidates in integrated circuits due to remarkable properties low crosstalk, loss, and packaging minimization. Many devices based on SPP waveguide have emerged, but it still a challenge manipulate freely real-time. Here, we propose programmable multifunctional device by loading varactor diodes between adjacent teeth...
Although tremendous efforts have been devoted to investigating planar single-conductor circuits, it remains challenging provide tight confinement of electromagnetic field and compatibility with active semi-conductor components such as amplifier, harmonic generator mixers. Single-conductor spoof surface plasmon polariton (SSPP) structure, which is one the most promising transmission media due outstanding confinement, still suffers from difficulty in integrating components. In this paper, a...
Photonic integrated circuits (PICs) and microwave (MICs) have been widely studied, but both of them face the challenge miniaturization.On one hand, construction photonic elements requires spaces proportional to wavelength, on other electromagnetic compatibility issues make it challenging reach high-density layouts for MICs.In this paper, we review research advances miniaturized PICs MICs based surface plasmon polaritons (SPPs).By introducing SPPs, at subwavelength scales are realized PICs,...
Ultrathin corrugated metallic structures have been proved to support spoof surface plasmon polariton (SPP) modes on two-dimension (2D) planar microwave circuits. However, provide stronger field confinement, larger width of strip is required load deeper grooves, which cumbersome in modern large-scale integrated circuits and chips. In this work, a new SPP transmission line (TL) with zigzag grooves proposed. This structure can achieve confinement compared conventional one the same width. other...
We propose an efficient method to suppress the crosstalk based on mode mismatch between spoof surface plasmon polariton (SPP) transmission line (TL) and microstrip. Since microstrip SPP TL support quasi-transverse electromagnetic (quasi-TEM) wave transverse magnetic (TM) wave, respectively, transmitting (EM) energy can hardly be coupled these two kinds of TLs, which helps reduce crosstalk. For cases weak strong coupling, structures TLs are designed. To verify performance suppression, samples...
Abstract Nonlinear phenomena such as second‐harmonic generation (SHG) play an important role in both optical and microwave technologies. To achieve high (SH) conversion efficiency single‐conductor system adaptability simultaneously, a gain‐associated SHG method based on odd‐mode spoof surface plasmon polaritons (SSPPs) is proposed. Field analysis indicates that the SSPPs can support internal electric potential difference cross sections of transmission structures to feed active semiconductor...
Spiking neural networks (SNNs) exhibit superior energy efficiency but suffer from limited performance. In this paper, we consider SNNs as ensembles of temporal subnetworks that share architectures and weights, highlight a crucial issue affects their performance: excessive differences in initial states (neuronal membrane potentials) across timesteps lead to unstable subnetwork outputs, resulting degraded To mitigate this, promote the consistency potential distribution output through smoothing...
Due to the abilities of remarkable field confinements and enhancements, plasmonic surfaces supporting spoof surface plasmon polaritons (SPPs) are important artificial structures with many potential applications. In this paper, we propose analytical derivation dispersion formulation metallic complicated subwavelength decorations using a field-network joint solution, which offers new scheme obtain relations surfaces. Based on proposed method, could predict not only relationship between...
Spoof surface plasmon polaritons (SSPPs) have been considered as a new-type wave transmission line (TL) because of its single feature. However, it cannot be directly fed by the measured system mode SSPP TLs is totally different from traditional like microstrip lines. Also, existing solutions require complicated structures and big area on circuit space to complete transition between two propagation modes. Here, we propose an ultracompact simple single-conductor TL, consisting very short...
A wide-angle broadband converter from odd-mode spoof surface plasmon polaritons (SPPs) to spatial waves is proposed using spatially gradient Vivaldi-shaped flaring structure. We first show the dispersion, Eigen mode, and effective circuit topology of designed SPP structure that it can support a propagating odd mode. conversion between SPPs mode has been realize smooth impedance wavenumber transition. Through full-wave simulation method, we obtained optimized geometric parameters, which...
We propose a dual circularly polarized (CP) substrate integrated waveguide (SIW) cavity-backed antenna with wide axial ratio (AR) beamwidth, which can generate the right-hand CP (RHCP) or left-hand (LHCP) radiation through exciting different ports. Dual radiations are accomplished by an SIW directional coupler (DC) in bottom layer, provides desired amplitude and phase conditions for two orthogonal slots. By superposing centers of linearly (LP) electric field elements, proposed achieves good...
Frequency-dependent characteristic impedance extraction and compact excitation of spoof surface plasmon polariton (SSPP) waveguides are achieved in this work. The behavior SSPP cannot be directly described using the transmission-line model due to non-transverse electromagnetic modes. By investigating near-field distribution a typical waveguide, we find special position where field component longitudinal direction is nearly equal zero, reflection completely caused by mismatch rather than mode...
In this paper, a new kind of spoof surface plasmon polariton (SSPP) beam splitter integrated with band-rejection filtering functions is presented. Firstly, the mechanism single-band rejection phenomena SSPP transmission lines (TLs) and without T-shaped decorations are revealed through dispersion analyses. Based on filter, multi-band filters further designed by introducing different intervals between symmetric decorations. Furthermore, we construct compact Y-shaped broadband function using...
We propose to suppress high-power microwave pulses (HPMPs) using nonlinear dispersion and filtering natures of spoof surface plasmon polaritons (SSPPs). Frequency components a short HPMP are distributed in time domain due different group velocities partly cutoff on SSPP transmission lines (TLs), leading peak suppression HPMP. To illustrate the protection mechanism real engineering, an mono-pulse antenna is designed. Sum difference beam functions demonstrated by both simulations experiments....
Reconfigurability of dispersion properties spoof surface plasmon polaritons (SSPPs) have been realized by loading tunable elements such as varactors and p-i-n diodes. However, the parasitic resistance will lead to transmission loss SSPPs, which still lacks investigation. In this article, we propose comprehensively answer three critical questions in area: 1) how analyze reconfigurable SSPPs; 2) reduce 3) utilize SSPPs. For first question, complex characteristic impedance SSPPs is...
Structured metallic surfaces, also called as plasmonic have been proposed to support spoof surface plasmon polariton (SPP) modes, which can mimic natural SPPs at optical frequencies. Complex surfaces provide a large degree of freedom engineer the characteristics SPP dispersion. However, analysis complex is difficult using existing theoretical methods, such effective medium model and mode matching model. Recently, an accurate field-network-joint method has introduced into dispersion but it...
We present a method of designing pattern reconfigurable Yagi antenna based on the active corrugated strip line (ACSL) technology. A conventional dipole is used as driven element, and pair ACSLs in different states set both sides symmetrically. The have average phase constants ( <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> <tex-math notation="LaTeX">$\beta _{\mathrm {ave}}$ </tex-math></inline-formula> ), where ACSL with lower...
Abstract A programmable hybrid circuit is proposed, which composed of two reconfigurable spoof surface plasmon polariton (SPP) waveguides loaded with varactor diodes and a substrate integrated waveguide (SIW). By manipulating their dispersion behaviors, the band‐pass effect achieved in circuit, upper lower cutoff frequencies are determined by SPP SIW, respectively. When configured to have same frequency that higher than SIW's cutoff, proposed can realize power division; when one reconfigured...
Due to the unique properties of field confinement and enhancement, spoof surface plasmon polaritons (SPPs) are considered as special modes break many challenges in traditional electronic microwave engineering. Ultrathin corrugated metallic structure offers an easy fabrication method realize SPP waveguides on substrate, has been proved have merits recent years. Lately, a programmable coding waveguide loaded by active elements was presented, which makes it possible control SPPs real time....