A5100345844- Graphene research and applications
- Synthesis and properties of polymers
- Flame retardant materials and properties
- Metamaterials and Metasurfaces Applications
- Ga2O3 and related materials
- Multiferroics and related materials
- Terahertz technology and applications
- Corrosion Behavior and Inhibition
- Conducting polymers and applications
- Gas Sensing Nanomaterials and Sensors
- Plasmonic and Surface Plasmon Research
- Ferroelectric and Piezoelectric Materials
- Silicone and Siloxane Chemistry
- Quantum optics and atomic interactions
- High voltage insulation and dielectric phenomena
- 2D Materials and Applications
- Carbon Nanotubes in Composites
- Synthesis and characterization of novel inorganic/organometallic compounds
- nanoparticles nucleation surface interactions
- Thermal Radiation and Cooling Technologies
- Polymer Nanocomposites and Properties
- Transition Metal Oxide Nanomaterials
- Radio Wave Propagation Studies
- Electrodeposition and Electroless Coatings
- Nanopore and Nanochannel Transport Studies
Shanghai Jiao Tong University
2023
Hefei University
2018-2023
Beijing Academy of Quantum Information Sciences
2023
Chongqing University of Posts and Telecommunications
2022
Zhejiang Normal University
2020
University of Science and Technology of China
2001-2019
Collaborative Innovation Center of Quantum Matter
2019
Tsinghua University
2017-2019
Beijing University of Chemical Technology
2019
Wuhan Engineering Science & Technology Institute
2017-2018
For the first time, pressure, salt concentration and pH demonstrated advantages for tuning nanochannels within lamellar graphene oxide (LGO) membranes to control separation of small molecules. This provides a new avenue designing engineering efficient LGO molecular separation.
Abstract Actively tuning optical transmission through hybrid metasurfaces incorporated with multifunctional active media holds great promise for the next generation devices. In terahertz (THz) range, they remain rare due to lack of dynamic and designs materials. Here, a vanadium dioxide (VO 2 )‐based metasurface is proposed present control THz waves via electrically triggering ultrafast excitation. By minimizing thermal mass VO optimizing patterns within two side gaps asymmetric split‐ring...
A quantitative study of the interphase and interface graphene nanoplatelets (GNPs)/epoxy oxide (GO)/epoxy was carried out by combining scanning transmission electron microscopy (STEM) energy-loss spectroscopy (EELS). The regions between GNPs epoxy matrix were clearly identified discrepancy plasmon peak positions in low spectra due to different valence densities. spectrum acquisitions along lines across interface. An thickness 13 12.5 nm measured for GNPs/epoxy GO/epoxy, respectively. density...
Abstract Metasurfaces have been widely used to manipulate terahertz waves due their great potential for achieving unique electromagnetic responses. However, realize ultrafast and efficient control of the light in active metasurfaces is still a critical challenge. Here, an tunable metasurface which consists ion‐implanted annealed silicon disk array experimentally demonstrated range. By utilizing optical‐pump terahertz‐probe spectroscopy, absolute transmission modulation up 38% realized at...
This article presents ultrawide bandwidth (BW) and large-angle helical metamaterial absorbers (HMMAs) consisting of a periodic array coaxially nested magnetic helices. The enhanced properties these HMMAs, including BW, polarization insensitivity, wide-angle absorption, are confirmed illustrated experimentally. Large helix diameter (20–30 mm), small coupling constant (close to 1), large nesting (5 20 mm) help in the enhancement absorption properties. Current distributions property HMMAs...
Light‐sensitive electronic devices based on semiconductor P–N junctions have been widely used as photodetectors and solar cells. In order to improve the overall performance of such photosensitive devices, new yet simple design is required. this work, a sandwich structure proposed by combining ferroelectric oxide Bi 6 FeCoTi 3 O 18 with graphene. A highly sensitive photodetector then realized benefiting from polarization assisted charge separation, well unique features graphene extreme...
In order to improve the flame retardancy of polystyrene (PS), a phosphorus and nitrogen comonomer, named AC 2 NP , was synthesized then incorporated into various amounts PS by seeded emulsion polymerization. The modified methacrylate (AC ) used as core phase, styrene shell flame‐retardant effect copolymers with core‐shell structure were prepared successfully. particle size ranged from 40 60 nm, properties characterized in detail. Notably, despite few units copolymers, all exhibited...
Quantum spins, also known as spin operators that preserve SU(2) symmetry, lack a specific orientation in space and are hypothesized to display unique interactions with superconductivity. However, spin–orbit coupling crystal field typically cause significant magnetic anisotropy d/f shell spins on surfaces. Here, we fabricate atomically precise S = 1/2 nanographenes Pb(111) through engineering sublattice imbalance the graphene honeycomb lattice. Through tuning exchange strength between...
In the fields of electronics and optoelectronics, graphene has attracted much attention as a potential alternative material. Using vapor deposition method, monolayer graphene-based nanostructure modified by superionic conductor RbAg4I5 is developed. At small bias 0.2 V, it exhibits excellent photoelectric characteristics at selected wavelengths 532 nm, 785 808 nm in spectral region from visible green to near infrared. Taking an example, responsivity 1.2 mA W−1 (an improvement greater than...
A UV photo-detector which hasfast response was created bycombining monocrystalline anatase nanosheet arraywith monolayer graphene.
Flexible polymer-based magnetoelectric (ME) materials have broad application prospects and are considered as a new research field. In this article, FeCoSiB thin films were deposited on poly(vinylidene fluoride-co-trifluoroethylene) (PVDF-TrFE) substrate by DC magnetron sputtering. The structure of PVDF-TrFE/FeCoSiB heterostructure was similar to 2-2. Under bias magnetic field 70 Oe, the composites dramatically increased ME voltage coefficient high 111 V/cm⋅Oe at frequency about 85 kHz....
Abstract A novel halogen‐free flame‐retardant material consisting of a cyclotriphosphazene‐based char‐forming agent, aluminum diethyl phosphinate, nickel trioxide (Ni 2 O 3 ), an oil‐filled styrene–ethylene–butadiene–styrene block copolymer, and polypropylene was studied. On the basis their UL‐94 ratings limiting oxygen index (LOI) data, flame retardants exhibited very effective properties in material. When loading retardant (FR) only 35 wt %, attained V‐0 (1.6 mm) rating, its LOI value...
Graphene is receiving significant attention for use in optoelectronic devices because it exhibits a wide range of desirable electrical properties. Although modified graphene that fabricated on quantum dots (or similar integration strategies) has shown promise, not met the requirements high-speed applications and highly sensitive detection. Herein, we report ion-modulated composite nanostructures were incorporated into photodetectors. We focus dynamical properties novel photodetectors, they...
ABSTRACT In order to improve the flame retardancy of polystyrene, a phosphorus‐ and nitrogen‐containing monomer, N , ‐tetramethyl‐ bis (phospohonate)‐2‐hydroxyethyl (methylene) amine acrylate (BC 2 NP ), was synthesized characterized, then incorporated into various amounts polystyrene via radical emulsion copolymerization. The copolymers prepared were characterized by Fourier transform infrared, nuclear magnetic resonance spectra, transmission electron microscopy, differential scanning...
The inside back cover image shows the device structure of a typical plasmon-enhanced InGaZnO ultraviolet photodetector tuned by ferroelectric HfZrO. These devices, reported Yu Liu, Junxiong Guo, and co-workers in article number 1900588, are key component for future high-performance display arrays. enlarged view domain, which can be through use an applied voltage to suppress dark current.
Hydrogen-induced multi-spot corrosion on the surface of polycrystalline rare metals is a complex process, which involves interactions between phases (metal, hydride and oxide), grain orientations, boundaries, spots. To accurately simulate this process comprehend underlying physics, theoretical method required that includes following mechanisms: i) hydrogen diffusion, ii) phase transformation, iii) elastic phases, especially, oxide film hydride, iv) grains, v) solutes boundaries. In study, we...
In this paper, we present a metamaterial structure of Dirac and vanadium dioxide investigate its optical properties using the finite-difference time-domain (FDTD) technique. Using phase transition feature dioxide, design can realize active tuning PIT effect at terahertz frequency, thereby converting from single to double PIT. When VO$_2$ is in insulating state, symmetric obtain single-band effect; metallic turns asymmetric dual-band effect. This provides reference direction for actively...