A5107171363- Metamaterials and Metasurfaces Applications
- Advanced Antenna and Metasurface Technologies
- Antenna Design and Analysis
- Microwave Engineering and Waveguides
- Energy Harvesting in Wireless Networks
- Acoustic Wave Phenomena Research
- Electromagnetic wave absorption materials
- RFID technology advancements
- Millimeter-Wave Propagation and Modeling
- Wireless Power Transfer Systems
- Full-Duplex Wireless Communications
- Advanced Sensor and Energy Harvesting Materials
- Antenna Design and Optimization
- Optical Network Technologies
- Plasma Applications and Diagnostics
- Advanced Photonic Communication Systems
- Remote-Sensing Image Classification
- Semiconductor Lasers and Optical Devices
- Gas Sensing Nanomaterials and Sensors
- Plasma Diagnostics and Applications
- Advancements in PLL and VCO Technologies
- Advanced Fiber Laser Technologies
- Metal and Thin Film Mechanics
- Advanced MIMO Systems Optimization
- Speech and Audio Processing
Chinese Academy of Sciences
2014-2025
Shanghai Institute of Optics and Fine Mechanics
2018-2025
University of Manchester
2024-2025
Taizhou University
2025
Zhongda Hospital Southeast University
2024
University of Chinese Academy of Sciences
2017-2024
Wuhan University of Technology
2011-2024
Nanjing University of Aeronautics and Astronautics
2023-2024
Shanghai Institute of Technology
2024
Southeast University
2017-2024
We present a metamaterial for simultaneous optical transparency and microwave absorption in broadband, which can be used as an optically transparent radar-wave absorber. The proposed absorber is made of windmill-shaped elements with the reflection spectra featured by three bands. By properly tailoring resonances structure, we achieve optimized absorptivity that greater than 90% from 8.3 to 17.4 GHz. In meantime, excellent transmittance achieved use indium tin oxide (ITO) film moderate...
Developing high-efficiency microwave absorbers remains challenging in the broadband range, particularly low-frequency range containing L band and even lower. To overcome this challenge, a hybrid metamaterial absorber comprising conventional magnetic absorbing material multi-layered meta-structure predesigned with graphene films is proposed to realize wideband absorption performance starting from ultra-low frequencies (0.79–20.9 GHz 25.1–40.0 GHz). The high ability of device originates...
Abstract Two-dimensional (2D) superlattices, formed by stacking sublattices of 2D materials, have emerged as a powerful platform for tailoring and enhancing material properties beyond their intrinsic characteristics. However, conventional synthesis methods are limited to pristine sublattices, posing significant practical challenge when it comes chemically modified sublattices. Here we report chemical method that overcomes this creating unique graphene superlattice, with monodisperse,...
Optically transparent metamaterial microwave absorbers (MMAs) developed so far unexceptionally encounter an intrinsic contradiction between extending the absorption bandwidth and improving optical transparency, hindering their practical applications. This work, in its experiment calculation, demonstrates MMA with both broadband excellent transparency by standing‐up closed‐ring resonators (CRRs) indium tin oxide backed Plexiglas board. The as‐designed shows a strong of 85% covering wide...
Three-dimensional (3D) bioprinting combines biomaterials, cells and functional components into complex living tissues. Herein, we assembled function-control modules cell-laden scaffolds using 3D bioprinting. A customized printer was able to tune the microstructure of printed bone mesenchymal stem cell (BMSC)-laden methacrylamide gelatin at micrometer scale. For example, pore size adjusted 282 ± 32 μm 363 60 μm. To match requirements printing nozzle, collagen microfibers with a length 22 13...
We present a thin metasurface with large microwave absorptivity and low infrared emissivity simultaneously. By properly tuning the resonance peaks impedance of meta-atom, broadband greater than 90% from 8.2 to 16.0 GHz is achieved. In meantime, owing coverage periodic metal patches on top surface, exhibited in region (IR) 8 µm–14 µm. The excellent agreement between numerical simulation experimental result demonstrates good performance proposed metasurface. Due usage polymethacrylimide (PMI)...
Metamaterial absorbers and diffusers provide powerful routes to decrease the backward reflection significantly with advantages of ultrathin profile customized bandwidth. Simultaneous control absorption scattering behaviors metamaterials which helps improve suppression capabilities reflection, however, still remains a challenge. Aiming at this goal, we propose metasurface constituted by two kinds elements in pseudorandom arrangement. By use indium tin oxide moderate sheet resistance...
Acoustic metasurfaces have enabled unprecedented control over acoustic waves, offering opportunities in areas such as holographic rendering, sound absorption, and communication. Despite the steady progress made this field, most metasurface designs are passive that they only provide static functionalities. Here, a reconfigurable active metalens is implemented to showcase scanning of focus along arbitrary trajectories free space with help previously developed platform. Each unit cell contains...
We propose a low-profile broadband planar circularly polarized folded transmitarray antenna (CPFTA) based on well-designed top and bottom metasurfaces (MSs). The MS is employed to reflect the x-polarized wave as ground and, at same time, convert y-polarized into waves with arbitrary phase shifts in operation band. A applied incident twist its polarization by 90°. whole CPFTA, including feeding source of microstrip antenna, MSs can be fully integrated fabricated using low-cost printed circuit...
We present a conformal metamaterial with simultaneous optical transparency and broadband millimeter-wave absorption for curved surface. By tailoring the reflection response of meta-atoms at oblique angles, it is possible to achieve excellent performance from 26.5 40.0 GHz within wide angular range 0° 60° transverse-electric transverse-magnetic waves. In meantime, by employing transparent substrates, including polyvinyl chloride polyethylene terephthalate, good transmittance (80.1%)...
Abstract We propose a theoretical mechanism and new coding strategy to realize extremely accurate manipulations of nonlinear electromagnetic harmonics in ultrawide frequency band based on time-domain digital metasurface (TDCM). Using the proposed strategy, we design fabricate millimeter-wave (mmWave) TDCM, which is composed reprogrammable meta-atoms embedded with positive-intrinsic-negative diodes. By controlling duty ratios time delays sequences loaded experimental results show that both...
Artificially engineered metamaterials/metasurfaces provide an extraordinary strategy for tailoring the electromagnetic properties of devices, which may break conventional limits in existing polarization filters. Hence, this paper presents anisotropic graphene-based meta-filter that contains features both a phase-gradient metasurface and absorber, thereby enabling versatile beam behaviors low reflection loss under orthogonal polarization. In meantime, our design offers idealized platform...
Spatial polarization converter can shift the state of incident wave to another in a specific frequency band. The traditional conversion devices mainly include natural materials and artificial electromagnetic (EM) structures, which are generally sensitive states cannot realize manipulations nonlinear harmonics. These drawbacks limit their developments wireless communications radar detection applications. Herein, general regulation scheme based on anisotropic time‐domain digital coding...
Acoustic metasurfaces display unprecedented potential for their unique and flexible capabilities of wave front manipulations. Although rapid progress significant developments have been achieved in this field, it still remains a challenge to obtain an acoustic metasurface that can perform different functions three-dimensional (3D) space, as desired. Here, tunable composed Helmholtz-resonator-like digital-coding meta-atoms is presented overcome the limitation realize 3D dynamic The digital...
Abstract Large-scale stretchable strain sensor arrays capable of mapping two-dimensional distributions have gained interest for applications as wearable devices and relating to the Internet Things. However, existing are usually unable achieve accurate directional recognition experience a trade-off between high sensing resolution large area detection. Here, based on classical Mie resonance, we report flexible meta-sensor array that can detect in-plane direction magnitude preloaded strains by...
In this article, a seven-band omnidirectional rectenna is proposed for the first time to harvest RF energy. The designed operates in following practical and up-to-date frequency bands: GSM1800 (1.8 GHz), LTE (2.1 WLAN/Wi-Fi (2.4 5.8 5G bands (2.6, 3.5, 4.9 GHz). To obtain multiband rectenna, novel rectifier introduced composed of three optimized single shunt diode rectifiers parallel. Overall RF-to- dc conversion efficiencies as high 44.4% @ 1.84 GHz, 43.9% 2.04 45.4% 2.36 43.4% 2.54 36.1%...
Abstract With the drafting of 6G white paper, terahertz (THz) modulators reshow profound significance in wireless communication, data storage, and imaging. Active tuning THz waves through hybrid meta-structure incorporated with smart materials has attracted keen interest due to deliberate structural design dynamic transition material properties. However, until now, these meta-devices have usually been responsive a single driving field, such as electrical, thermal, or optical stimuli, which...
The effect of composition welding wires on the interfacial microstructure and bonding strength Babbitt alloys steel substrate has been studied. A cladding Sn-based was obtained surface medium carbon by MIG arc brazing. interface between have systematically investigated. collected according to destructive testing method bimetallic sliding bearing. Among three samples, BW8-4 without no SnSb segregation had highest (83.07 MPa).The reason for enhancement discussed. IMC layers were harder than...