A5100628411- Metamaterials and Metasurfaces Applications
- Advanced Antenna and Metasurface Technologies
- Antenna Design and Analysis
- Astro and Planetary Science
- Photonic Crystals and Applications
- Isotope Analysis in Ecology
- Advanced Sensor and Energy Harvesting Materials
- Liquid Crystal Research Advancements
- Electrospun Nanofibers in Biomedical Applications
- Advancements in Battery Materials
- Diamond and Carbon-based Materials Research
- Metal and Thin Film Mechanics
- Surface Modification and Superhydrophobicity
- Force Microscopy Techniques and Applications
- Supercapacitor Materials and Fabrication
- Multiferroics and related materials
- Terahertz technology and applications
- Plasmonic and Surface Plasmon Research
- Thermochemical Biomass Conversion Processes
- Photosynthetic Processes and Mechanisms
- Magnetic properties of thin films
- Metal Extraction and Bioleaching
- Aerosol Filtration and Electrostatic Precipitation
- Advanced Cellulose Research Studies
- Electrohydrodynamics and Fluid Dynamics
Tsinghua University
2013-2024
Suzhou Research Institute
2024
Tsinghua–Berkeley Shenzhen Institute
2021-2024
University of Science and Technology of China
2021-2024
University Town of Shenzhen
2013-2024
Southwest Petroleum University
2023-2024
Yangtze University
2023-2024
Hunan Agricultural University
2021-2023
Springer Nature (Germany)
2023
Qingdao University
2010-2022
Isotropic negative permeability resulting from Mie resonance is demonstrated in a three-dimensional (3D) dielectric composite consisting of an array cubes. A strong subwavelength magnetic resonance, corresponding to the first was excited cubes by electromagnetic wave. Negative verified area via microwave measurement and dispersion properties. The relies on size permittivity It promising for construction novel isotropic 3D left-handed materials with simple structure.
Negative thermal expansion materials are important and desirable in science engineering applications. However, natural with isotropic negative rare usually unsatisfied performance. Here, we propose a novel method to achieve two- three-dimensional metamaterials via antichiral structures. The two-dimensional metamaterial is constructed unit cells that combine bimaterial strips structures, while the fabricated by multimaterial 3D printing process. Both experimental simulation results display...
An electrically tunable negative permeability metamaterial consisting of a periodic array split ring resonators infiltrated with nematic liquid crystals is demonstrated. It shows that the transmitted resonance dip can be continuously and reversibly adjusted by an applied electric field, maximum shift about 210MHz respect to frequency around 11.08GHz. Numerical simulation near frequency, range dynamically widened 200MHz field. provides convenient means design adaptive metamaterials.
Conductive hydrogels have shown great potential applications in a wide variety of fields, including artificial intelligence devices and biomedical engineering. However, it still remains challenge to develop facile cost-effective approach achieve conductive hydrogel with favorable qualities. Herein, we changed the traditional ingredient poly(vinyl alcohol) (PVA) by addition phytic acid (PA), which could yield through one freeze-thaw cycle. The PVA-PA holds several virtues large stretchability...
A magnetotunable left-handed material (LHM) consisting of yttrium iron garnet (YIG) slab and metallic wires has been demonstrated by experiments simulations. The passband through the LHM can be dynamically continuously tuned in a wide frequency region an applied magnetic field. tunability is attributed to that negative permeability induced ferromagnetic resonance YIG slab. authors proposed convenient means design tunable based on materials as alternative split ring resonators.
A general and scalable strategy to achieve transparent hazy cellulose films with excellent mechanical properties, especially folding endurance, remains an obstacle. Herein, we incorporate carboxymethyl (CMC) into opaque but paper of uniformly distributed lignocellulosic fiber network by a facile impregnation fabricate all-cellulose composite strong properties. The CMC serves as matrix enhance the transparency smoothness, whereas isotropic intertwined long slender fibers simultaneously acts...
In this work, we numerically designed and then experimentally verified a metamaterial perfect absorber based on artificial dielectric "atoms". This is composed of ceramic material (SrTiO3) "atoms" embedded in background matrix metal plate. The couple strongly to the incident electric magnetic fields at Mie resonance mode, leading narrow absorption band with simulated experimental absorptivities 99% 98.5% 8.96 GHz, respectively. polarization insensitive can operate wide angle incidence.
C points, circular polarization in momentum space, play crucial roles chiral wave manipulations. However, conventional approaches of achieving intrinsic points using photonic crystals with broken symmetries suffer from a low Q factor and high sensitivity to structural geometry, rendering them fragile susceptible perturbations disorders. We report magneto-optical (MO) bound states the continuum (BICs) symmetry-preserved planar crystal. achieve at Γ point that are robust against variation both...
A tunable isotropic negative effective permeability is experimentally demonstrated in a three-dimensional (3D) dielectric composite consisting of ceramic cube arrays by temperature changing. It shows that strong subwavelength magnetic resonance can be excited cubes corresponding to the first Mie mode and continuously reversibly adjusted from 13.65to19.28GHz with changing −15to35°C. Accordingly, performed frequency range about 6GHz adjusting temperature. provides convenient route design...
Abstract Dual band metamaterial perfect absorbers with two absorption bands are highly desirable because of their potential application areas such as detectors, transceiver system and spectroscopic imagers. However, most these dual proposed were based on resonances metal patterns. Here, we numerically experimentally demonstrate a absorber composed artificial dielectric “molecules” high symmetry. The “molecule” consists four “atoms” different sizes corresponding to near unity absorptivity....
In recent years, considerable attention has been focused on transformation optics and metamaterial due to their fascinating properties wide range of promising applications. Concentrator, one the most well-known applications metamaterial, is now limited only a single physical domain. Here we propose give experimental demonstration bifunctional concentrator that can concentrate both electric thermal fields given region simultaneously while keeping external undistorted. Fan-shaped structure...
Direct recycling is considered to be the next-generation technology for spent lithium-ion batteries due its potential economic benefits and environmental friendliness. For layered oxide cathode materials, an irreversible phase transition a rock-salt structure near particle surface impedes reintercalation of lithium ions, thereby hindering compensation process from fully restoring composition defects repairing failed structures. We introduced transition-metal hydroxide precursor, utilizing...
Angiostatin binds to endothelial cell (EC) surface F(1)-F(0) ATP synthase, leading inhibition of EC migration and proliferation during tumor angiogenesis. This has led a search for angiostatin mimetics specific this enzyme. A naturally occurring protein that the F1 subunit synthase blocks hydrolysis in mitochondria is inhibitor (IF1). The present study explores effect IF1 on synthase. bound purified F(1) inhibited F(1)-dependent consistent with its reported activity studies mitochondria....
The cleanup of spilled oil from water has always been a severe and urgent issue, which attracted great attention interest. In this study, we reported highly efficient large-scale blow spinning technique to fabricate fibrous sorbents including the polystyrene (PS) sponge polyvinylidene fluoride (PVDF)/polystyrene composite package with ultrahigh adsorption capacity. wide diameter distributions multilevel pore structure PS fibers were obtained by controlling precursor solution compositions...
Metamaterials offer a powerful way to manipulate variety of physical fields ranging from wave (electromagnetic field, acoustic elastic wave, etc.), static (static magnetic electric field) diffusive (thermal mass). However, the relevant reports and studies are usually limited single field or functionality. In this study, we proposed experimentally demonstrated bifunctional metamaterial which could thermal simultaneously independently. Specifically, composite with independently controllable...
Urchin-like hierarchical IrO<sub>2</sub> nanostructures are obtained by a surfactant-free, wet-chemical approach. The urchin-like sample with relatively short needles and small cores at 180 °C shows optimal OER activity good stability in acid.
The demand for air filtration products has increased significantly with the aggravation of pollution and pandemic coronavirus disease (COVID-19). It is urgently needed to develop an membrane that exhibits lasting performance antibacterial activity. Herein, we report a large-scale blow spinning technique produce polyvinylidene fluoride (PVDF) nanofiber membranes highly efficient mechanical its modification by adding silver nanoparticles (AgNPs). PVDF area density only 1.0 g/m2 highest...
Abstract In this work, an approach to achieve perfect absorption and microwave enhancement is proposed by combining traditional wave‐absorbing materials with metamaterials. Specifically, absorbing basement membrane (BM) integrated 3D woodpile (WP) photonic crystals, both of which are composed flexible silicon as matrix carbonyl iron powder (CIP) absorbent. Direct ink writing (DIW) used fabricate the crystals either single or coupled concentrations Experiments show that 10‐dB bandwidth...