A5020160781- Metamaterials and Metasurfaces Applications
- Advanced Antenna and Metasurface Technologies
- Antenna Design and Analysis
- Innovative Energy Harvesting Technologies
- Energy Harvesting in Wireless Networks
- Advanced Sensor and Energy Harvesting Materials
- Photonic and Optical Devices
- Advancements in Photolithography Techniques
- Plasmonic and Surface Plasmon Research
- Nanofabrication and Lithography Techniques
- Topological Materials and Phenomena
- Photonic Crystals and Applications
- Mechanical and Optical Resonators
- Orbital Angular Momentum in Optics
- Electrocatalysts for Energy Conversion
- Advanced MEMS and NEMS Technologies
- Wireless Power Transfer Systems
- Aluminum Alloy Microstructure Properties
- Conducting polymers and applications
- Advanced Surface Polishing Techniques
- High-Temperature Coating Behaviors
- Quantum Mechanics and Non-Hermitian Physics
- Advanced materials and composites
- Underwater Acoustics Research
- Force Microscopy Techniques and Applications
Shanghai Ninth People's Hospital
2018-2025
Shanghai Jiao Tong University
2012-2025
Southeast University
2015-2025
Guizhou Normal University
2025
Nanyang Technological University
2012-2025
Sun Yat-sen University
2023-2025
Harbin Medical University
2025
Third Affiliated Hospital of Harbin Medical University
2025
Peking University
2016-2025
First Affiliated Hospital of Xinjiang Medical University
2025
Abstract Digital coding metasurfaces are aimed at simplifying the design and optimization procedures, manipulating electromagnetic waves in digital manner. In this paper, a multilayered anisotropic metasurface is designed to realize multiple independent functionalities by changing polarization direction of incident waves. As proof concept, beam deflection, diffuse scattering, vortex generation realized using only single transmission‐reflection‐integrated (TRI) metasurface. This can achieve...
Energy harvesting from ambient vibrations using piezoelectric effect is a promising alternative solution for powering small electronics such as wireless sensors. A conventional energy harvester usually consists of cantilevered beam with proof mass at its free end. For device, the second resonance ignored because high frequency well low response level compared to first resonance. Hence, only mode has been frequently exploited in reported literature. In this article, novel compact two...
The conventional bulk-boundary correspondence directly connects the number of topological edge states in a finite system with invariant bulk band structure periodic boundary condition (PBC). However, recent studies show that this principle fails certain non-Hermitian systems broken reciprocity, which stems from skin effect (NHSE) where most eigenstates decay exponentially boundary. In work, we experimentally demonstrate 1D circuit reciprocity by utilizing unidirectional coupling feature...
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...
The realization of room-temperature-operated, high-performance, miniaturized, low-power-consumption and Complementary Metal-Oxide-Semiconductor (CMOS)-compatible mid-infrared photodetectors is highly desirable for next-generation optoelectronic applications, but has thus far remained an outstanding challenge using conventional materials. Two-dimensional (2D) heterostructures provide alternative path toward this goal, yet despite continued efforts, their performance not matched that...
We present a novel method to design conventional Fabry–Perot (F-P) antenna but with low scattering. Combining coding metasurface and an F-P together could effectively reduce the scattering keep high gain simultaneously. The element consists of two layers square metallic patches printed on both sides dielectric substrate. bottom patch helps form partially reflecting surface (PRS) for antenna, while upper is utilized construct optimized sequence, aiming by redirecting electromagnetic energies...
Vibration energy harvesting using piezoelectric material has received great research interest in the recent years. One important concern for development of is to broaden operating bandwidth. Various techniques have been proposed broadband harvesting, such as resonance tuning approach, frequency up-conversion technique, multi-modal and nonlinear technique. A recently reported linear 2-degree-of-freedom harvester can achieve two close resonant frequencies both with significant power outputs,...
Abstract Digital coding metasurfaces have been introduced to describe the properties of digitally and provide a new approach link physical world information science. However, most current digital are focused on phase code, limiting their functions applications. Here, concept reflection–transmission (R–T) amplitude code is established, novel for full‐space electromagnetic (EM) manipulations proposed, in which states R–T “0” “1” represent total reflection transmission, respectively. The...
Electromagnetically induced transparency (EIT) originates from quantum physics, where a narrow transparent peak appears in the opaque band due to destructive interference between states of atoms and molecules. Similar phenomena can be realized based on strong-coupling resonators with similar spectrum transmission peaks abrupt dispersion variations. These classical systems, ranging elastic optical, are named analogs EIT. The sharp resonant high-quality factors exhibit powerful potentials...
Unlike conventional topological materials that carry states at their boundaries, higher-order are able to support boundaries of such as corners and hinges. While band topology has been recently extended into thermal diffusion for metamaterials, its realization is limited a 1D lattice, lacking access the topology. In this work, experimental reported insulator in generalized 2D lattice. The corner observed bandgap rate bulk, consequence anti-Hermitian nature Hamiltonian. protection these...
Tensile interruption experiments with different strains were conducted on additively fabricated nickel-based Inconel 939 superalloys at 700 °C to investigate the evolution of multiple deformation mechanisms. The microstructures strain groups captured by transmission electron microscopy (TEM) analyzed, and it was concluded that a total four various mechanisms identified, which first be activated Orowan loop bypassing γ', tendency transition from double single observed. Anti-phase boundary...
Metamaterials are artificial structures composed of subwavelength unit cells to control electromagnetic (EM) waves. The spatial coding representation metamaterial has the ability describe material in a digital way. metamaterials typically constructed by that have similar shapes with fixed functionality. Here, concept frequency is proposed, which achieves different controls EM energy radiations pattern when changes. In this case, not only phase responses considered, but also sensitivities...
Abstract Digital coding metasurface is aimed at building up a bridge between physics and information science. Higher capacity of the digital means more powerful ability to control electromagnetic waves. Here, multiband improve proposed. The structures can provide 2‐bit states three separate frequency bands (C, X, Ku). It shown that proposed eliminate in‐band interference path degradation by introducing an operator frequency‐hopping spread spectra, from which flexible beam controls be...
Abstract We propose a theory to characterize the information and processing abilities of metasurfaces, demonstrate relation between metasurface its radiation pattern in far-field region. By incorporating general aperture model with uncertainty L2-space, we predict upper bound contained metasurface, reveal theoretical limit orthogonal states. The proposed also provides guidance for inverse design respect given functionalities. Through investigation disordered-phase modulated find invariance...
Abstract A metasurface is a thin array of subwavelength elements with designable scattering responses, and holography powerful tool for imaging field control. The existing holograms are classified into two types: one based on phase‐only metasurfaces (including the recently presented vectorial holography), which has high power efficiency but cannot control phases generated fields; while other phase‐amplitude‐modulated metasurfaces, can both amplitudes in region interest (ROI) very low...
The prepared Ni/Ni 2 P/CNs composites with enriched heterojunctions show excellent electromagnetic wave-absorption performances, which exceed most of the previously reported absorbers a hollow structure.