A5100749037- Microwave Engineering and Waveguides
- Metamaterials and Metasurfaces Applications
- Terahertz technology and applications
- Gyrotron and Vacuum Electronics Research
- Advanced Antenna and Metasurface Technologies
- Antenna Design and Analysis
- Radio Frequency Integrated Circuit Design
- Millimeter-Wave Propagation and Modeling
- Superconducting and THz Device Technology
- Photonic and Optical Devices
- Plasmonic and Surface Plasmon Research
- Photonic Crystals and Applications
- Particle Accelerators and Free-Electron Lasers
- Semiconductor Quantum Structures and Devices
- Particle accelerators and beam dynamics
- Microwave and Dielectric Measurement Techniques
- Electromagnetic Simulation and Numerical Methods
- Electromagnetic Compatibility and Noise Suppression
- GaN-based semiconductor devices and materials
- Semiconductor Lasers and Optical Devices
- Pulsed Power Technology Applications
- Radio Wave Propagation Studies
- Acoustic Wave Resonator Technologies
- Optical Coatings and Gratings
- Advancements in PLL and VCO Technologies
University of Electronic Science and Technology of China
2016-2025
Shanghai Zhangjiang Laboratory
2022-2025
Huzhou University
2021-2024
Hangzhou Medical College
2022-2024
Anhui Provincial Children's Hospital
2023
Hangzhou First People's Hospital
2022-2023
Hefei University of Technology
2023
University of Shanghai for Science and Technology
2022-2023
Hebei Semiconductor Research Institute
2016-2023
Southwest Jiaotong University
2022
Abstract Terahertz (THz) technologies have become a focus of research in recent years due to their prominent role envisioned future communication and sensing systems. One the key challenges facing field is need for tools enable agile engineering THz wave fronts. Here, we describe reconfigurable metasurface based on GaN technology with an array-of-subarrays architecture. This subwavelength-spaced array, under control 1-bit digital coding sequence, can switch between enormous range possible...
Properties of obliquely incident electromagnetic wave in one-dimensional (1D) magnetized plasma photonic crystals (PPCs) are studied this paper. Based on the continuous boundary condition 1D PPC, transfer matrix equation and dispersion transverse magnetic polarization deduced, properties transmission relation terms external field, collision frequency, dielectric constant angles investigated, respectively. Results show that gap location width can be effectively controlled by adjusting field...
Applying the photoexcitation characteristics of vanadium dioxide (VO(2)), a dynamic resonant terahertz (THz) functional device with combination VO(2) film and dual-resonance metamaterial was suggested to realize ultrafast external spatial THz wave active manipulation. The designed realizes pass band at 0.28-0.36 between dual-resonant frequencies, is applied control transmittance wave. More than an 80% modulation depth has been observed in statics experiment, experimental results illustrate...
Utilizing terahertz (THz) waves to transmit data for communication and imaging places high demands on phase modulation. However, until now, it is difficult realize a more than 100° shift in the transmission mode with one-layer structure. In this paper, ring-dumbbell composite resonator nested VO2 nanostructures proposed achieve large shift. It found that structure hybrid an enhanced resonant intensity, which coupled by L-C resonance dipole has been observed. Applying photoinduced transition...
Terahertz (THz) modulators are always realized by dynamically manipulating the conversion between different resonant modes within a single unit cell of an active metasurface. In this Letter, to achieve real high-speed THz modulation, we present staggered netlike two-dimensional electron gas (2DEG) nanostructure composite metasurface that has two states: collective state with massive surface characteristics and individual meta-atom characteristics. By controlling transport nanoscale 2DEG...
Integrated metasurfaces with diversified functionalities have demonstrated promising prospects for comprehensive implementations in compact 5G/6G communication systems by flexibly manipulating electromagnetic (EM) waves. Increasingly emerged multifunctional successfully revealed integrated wavefront manipulations via phase gradient arrays, coding apertures, independent polarization control, asymmetric transmission/reflection, etc. However, more degrees of freedom terms multi-band/broadband...
Abstract Boasting superior flexibility in beam manipulation and a simpler framework than traditional phased arrays, terahertz metasurface-based arrays show great promise for 5G-A/6G communication networks. Compared with the reflective reconfigurable intelligent surface (reflective RIS), transmissive RIS (TRIS) offers more feasibility transceiver multiplexing systems to meet growing demand high-performance tracking radar systems. However, TRIS encounters greater challenges phase shift,...
We theoretically and experimentally demonstrate a label-free terahertz biosensor with ultrahigh sensitivity distinctive discretion. By constructing metal-air-metal (MAM) metamaterial perfect absorber (MPA) metallic paired-ring resonator array, hollow microfluidic channel, backed reflector, novel dual-band absorptive sensing platform is proposed in the THz range. The near field coupling by dipole-induced trapped modes magnetic momentum caused vertical to transverse power flux that...
In this article, we experimentally demonstrate a bifunctional terahertz (THz) metasurface that can achieve broadband linear-to-circular polarization conversion (LCPC) and linear (LPC) in two different bands, respectively. The measured 3-dB axial ratio relative bandwidth is 34.2% for the LCPC lower band from 0.34 to 0.48 THz, over 80% LPC higher 0.53 0.85 THz. physical mechanism of explained by surface current distribution further discussed employing multiple interference model. This THz...
Abstract Hepatocellular carcinoma (HCC) is the most prevalent malignant tumor worldwide. Within HCC's microenvironment, focal adhesion kinase (FAK) plays a critical role. Regulatory T cells (Treg) modulate polarization of tumor-associated macrophages , but relationship between FAK, Treg cells, and remains underexplored. Phellinus linteus (PL) shows promise as treatment for HCC due to its pharmacological effects. This study aimed explore FAK Treg-macrophages assess whether PL could exert...
Dispersion characteristics of two types two-dimension dielectric plasma photonic crystal are studied based on modified plane wave method. Firstly, the eigenvalue equations TM mode type-1 and type-2 structures derived respectively; their dispersion curves confirmed by software simulation. Secondly, influences normalized frequency, filling factor relative constant band gap, gap width analyzed respectively, some corresponding physical explanations also given. These results would provide...
By using transfer matrix method, properties of one-dimensional magnetized plasma photonic crystals with a dielectric defect layer are studied. Results show that several modes appear within the band gaps; periodic number and collision frequency only affect transmission magnitude modes; external magnetic field incident angle control both thickness constant determine modes. This phenomenon may be useful in designing narrow filters or multi-channel filters.
Tunable focusing planar lens possesses more flexible characteristics to facilitate the expansion of its function and application. This study presents a meta-lens based on phase gradient vanadium dioxide composite metasurface controlled by an external thermal stimulus that enables switchable focusing. By utilizing insulator-metal transition components, can show different distribution could lead various focuses. Both simulated experimental results demonstrate without stimulus, components...
Terahertz reconfigurable intelligent surfaces (RIS) stand out from conventional phased arrays thanks to their unique electromagnetic properties and interconnect paradigms. They are a vital technology for terahertz wireless communication radar detection systems. Compared with 1-bit coding metasurfaces, 2-bit metasurfaces offer significant advantages such as single beam steering reduced quantization errors. Electrically controlled switchable have been restricted by the switch performance...
Abstract In this paper, on–off switching digitization of a W-band variable gain power amplifier (VGPA) with above 60 dB dynamic range is introduced for large-scale phased array. Digitization techniques modified stacking transistors partition are proposed to optimize configuration control sub-cells. By the techniques, radio frequency (VGA) could be highly customized both coarse and fine requirements instead using additional digital-to-analog converters tune overall bias. The designed VGA in...
A dual-resonance frequency selective surface filter in the THz range that uses bilayer modified complementary metamaterial structures is proposed this Letter. The bandpass filter, with dual bands centered at 0.315 and 0.48 THz, a single crystal quartz substrate simulated, fabricated, measured. To minimize manufacturing risks of working fragile thin substrates, efforts have been made to improve transmission response features realizable thicknesses. Experimental results from 0.1 0.6 measured...
A metasurface composed of multiple resonator arrangements with a certain phase distribution is capable efficient wavefront manipulation. An anisotropic matrix consisting asymmetric metal cross particles near-field coupling-induced achieves simultaneous distinctive dualpolarization anomalous reflections. Using polarization splitting, due to the gradients subunit, x-and-y-polarization components incident terahertz waves can be efficiently deflected different deflection angles in single plane...
A low-profile planar Yagi–Uda antenna with exact endfire radiation and vertical polarization is presented in this paper. The concept the combination of an aperture element a novel I-shaped resonator (VISR). acts as driven antenna, which can be equivalent virtual magnetic dipole. VISR array constructed unit cell employed director or reflector depending on resonant frequency cell, consists two identical rectangular metal conductors printed both sides substrate their electrical connection using...