A5024367108- Antenna Design and Analysis
- Microwave Engineering and Waveguides
- Advanced Antenna and Metasurface Technologies
- Antenna Design and Optimization
- Energy Harvesting in Wireless Networks
- Plasmonic and Surface Plasmon Research
- Millimeter-Wave Propagation and Modeling
- Metamaterials and Metasurfaces Applications
- Algal biology and biofuel production
- Advanced biosensing and bioanalysis techniques
- Photonic Crystals and Applications
- Neutrino Physics Research
- Astrophysics and Cosmic Phenomena
- Nanopore and Nanochannel Transport Studies
- Photonic and Optical Devices
- Wireless Body Area Networks
- Ion-surface interactions and analysis
- Gold and Silver Nanoparticles Synthesis and Applications
- Ultra-Wideband Communications Technology
- Radiation Detection and Scintillator Technologies
- Advanced Sensor and Energy Harvesting Materials
- Aquatic Ecosystems and Phytoplankton Dynamics
- Electromagnetic Compatibility and Noise Suppression
- Liquid Crystal Research Advancements
- Advanced MEMS and NEMS Technologies
Hefei University of Technology
2010-2025
Heilongjiang Bayi Agricultural University
2025
Southeast University
2014-2024
Ningbo University
2024
Institute of High Pressure Physics
2024
Nanjing Normal University
2020-2024
Zhejiang University
2007-2024
Optica
2024
State Key Laboratory of Millimeter Waves
2018-2024
University of Chinese Academy of Sciences
2023
In this paper, a wideband stacked patch antenna array composed of four linearly polarized elements is proposed for the implementation polarization reconfigurable states, i.e., vertical linear (LP), horizontal LP, left-hand circular polarization, and right-hand polarization. A double-layer structure, including driven substrate integrated waveguide (SIW) cavity parasitic radiation patches, used to develop element. The patches are excited by etching ring slot on top surface SIW cavity, which...
A low-profile wideband metasurface antenna with quad-polarization reconfiguration ability is presented in this paper. The proposed composed of a square patch, formed by lattice <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> <tex-math notation="LaTeX">$4 \times 4$ </tex-math></inline-formula> periodic metal plates, and four switchable feeding probes connected two designed single-pole double-throws switches. By properly selecting the...
Abstract In recent years, although light‐driven soft actuators have attracted intense scientific attention and achieved remarkable progress, the design construction of an intelligent robotic system with maneuverability, self‐adaptability, untethered control, greater freedom action, in particular omnidirectional motion capability on a plane, remains challenging. Herein, four types photo‐thermal fillers unprecedented twist‐bend actuation mode is introduced into liquid crystal elastomer‐based...
To investigate the effect of recovery treatment on microstructure and tribological properties ultrasonic impact-treated Al2FeCoNiCrW0.5 high-entropy alloy coatings, laser cladding technology was used to fabricate coatings a G10450 steel substrate, followed by impact (UIT) (HR, 300 °C). The results showed that coating consisted BCC FCC phases. Ultrasonic slightly broadened XRD diffraction peaks, while had minimal them. also refined grains. increased hardness from 738 HV0.5 856 HV0.5. Although...
A new circular ultra-wideband fractal monopole antenna based on descartes circle theorem (DCT) with elliptical iterations is presented. The proposed design optimized for return loss below −15 dB. basic structure slightly modified to ensure an overall smooth current distribution limited by the junction point nature of geometries. measured dB within its impedance bandwidth along omni-directional radiation pattern. Moreover due shape, has less weight and wind loading effect.
In this communication, the design and experimental verification of a reconfigurable 1 ×4 circularly polarized (CP) patch array antenna with frequency, radiation pattern, polarization agility are reported. An orthohexagonal element three groups parasitic varactor diode is adopted to enable frequency reconfiguration. By properly adjusting dc voltage applied on diode, operating can be tuned continuously, switched simultaneously between left-handed CP (LHCP) right-handed (RHCP). Four switchable...
This communication presents the design of a wideband circularly polarized (CP) multibeam transmitarray with cluster linearly (LP) feeds for millimeter-wave applications. A novel receiving/transmitting (Tx) unit cell, composed one LP and CP magnetoelectric (ME) dipoles, is designed capability converting incident wave from source to radiation enabling provide full 360° geometric phase coverage by rotating element. The compensation realized setting space-dependent rotation angle Tx array such...
A wideband millimeter-wave (MMW) horizontally polarized omnidirectional antenna with a conical beam is proposed in this paper. The composed of radiating circular loop, six arc strips, one-to-six radial waveguide power divider, and reflector. loop consists dipoles curved terminals. six-way divider employed to feed the dipoles, performance achieved by combing TM <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">010</sub> mode...
In this paper, a compact patch array antenna with reconfigurable polarizations and 2-D switchable beams is developed based on the spatial phase shift technique. A element proposed ports for implementing technique, which composed of square driven patch, two sets perturbation segments connected to via p-i-n diodes polarization diversity, parasitic three feeding probes integrated designed single-pole triple-throw switch. For circular polarized waves, individual excitation at can obtain 90° or...
In this communication, a bidirectional same sense circularly polarized (Bi-SSCP) endfire antenna array with reconfigurable polarization is proposed and implemented. First, circular (CP) element realized by adopting two pairs of switchable electric dipoles, which have 180° phase difference inherently. Along the fixed magnetic dipole, can work at CP states, i.e., left-hand (LHCP) right-hand (RHCP) switching states dipoles. Then, Bi-SSCP diversity developed using identical elements placed...
In this paper, we propose a <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> <tex-math notation="LaTeX">$4\times 4$ </tex-math></inline-formula> low-profile wideband patch array antenna with radiation pattern agility. The digital-controllable element is composed of square driven patch, notation="LaTeX">$2\times 2$ parasitic array, and two switchable feeding ports, which are connected to designed single-pole double-throw switch. Due...
This article introduces a reconfigurable cavity-backed <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> <tex-math notation="LaTeX">$1\,\,\times4$ </tex-math></inline-formula> magneto-electric (ME) dipole antenna array with agile polarization and steerable beam features for both linear circular polarizations (CPs). The proposed ME element backed by cavity can reduce the mutual coupling enhance scanning performance of array. To achieve...
A circularly polarized (CP) reconfigurable and linear (LP) orbital angular momentum (OAM) mode multiplexing concentric uniform circular array (CUCA) is presented. The designed antenna consists of two parts: an inner UCA composed four LP elements external eight sequentially rotated CP elements. outer are capable generating multiplexed OAM beams at 3.28 GHz with <italic xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">l</i> = +1 ±2, respectively. To...
Improving the coincidence time resolution (CTR) of time-of-flight positron emission tomography (TOF-PET) systems to achieve a higher signal-to-noise ratio (SNR) gain or even direct imaging (dPEI) is paramount importance for many advanced new clinical applications PET imaging. This places demands on timing performance all aspects systems. One effective approach use microchannel plate photomultiplier tubes (MCP-PMTs) prompt Cherenkov photon detection. In this study, we developed dual-module...
Graphene nanoribbons (GNRs) with hierarchical and well-ordered structures are believed to deliver superior performance in semiconductor device applications. Despite this potential, traditional alignment techniques for GNRs often fall short producing defect-free precisely defined molecular architectures. Here, we introduce a strategy the fabrication of highly-ordered by empowering them thermotropic liquid crystallinity, utilizing bottom-up solution synthesis approach. The resulting GNR...
Graphene nanoribbons (GNRs) with hierarchical and well‐ordered structures are believed to deliver superior performance in semiconductor device applications. Despite this potential, traditional alignment techniques for GNRs often fall short producing defect‐free precisely defined molecular architectures. Here, we introduce a strategy the fabrication of highly‐ordered by empowering them thermotropic liquid crystallinity, utilizing bottom‐up solution synthesis approach. The resulting GNR...
Abstract The electrocatalytic hydrogen evolution reaction (HER) is a promising route to produce sustainable energy carrier for global carbon neutrality. HER performance largely determined by the overall proton activities, but identification of such key activities in microscopic process rather difficult. Herein, study demonstrates visualized concept integrating fundamental with electrochromic technology on well‐designed Pt@WO 3 platform acidic electrolyte, where can be rapidly discriminated...
In this letter, a planar low-profile 2 × polarization-reconfigurable antenna array using complementary square split-ring element based on substrate integrated waveguide technique is proposed for wireless applications. p-i-n diodes are adopted in the design switching radiation polarization. Three types of polarizations including linear polarization (LP), left-hand circular polarization, and right-hand can be achieved by properly controlling states two diodes. A rotated-element developed to...
This paper presents a frequency and polarization reconfigurable patch antenna with small gain variation. Eight discrete operating bands can be achieved by properly switching shorting pins, three states, i.e., left-hand circularly polarization, right-hand linearly realized simultaneously adjusting perturbation segments. A stable performance is obtained within wide range, as well all the utilizing loss-character of p-i-n diodes when pins are switched ON/OFF for different states. prototype...
The Laoguanhe River is a major tributary of the Danjiang River, which source water for Danjiangkou Reservoir (i.e., reservoir middle route South-to-North Water Diversion Project in China). This study was intended to provide scientific decision support help manage environment and maintain high quality levels diversion project. Risk assessment based on simulation undertaken this research. QUAL2Kw model used improve simulations under sparse data conditions. Latin hypercube sampling (LHS) flow...