50 Result(s)
within
Physics
Characterization and Evaluation of Materials
Ri**ang Zhu
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Article
Photonics joint radar and communication system using dual-band LFM-based signals with opposite chirp polarities
A photonics joint radar and communication (JRC) system using dual-band linear frequency modulation (LFM)-based waveforms is proposed and demonstrated. In the scheme, four optical chirp sidebands are generated ...
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Article
Passive Q-switched fiber laser based on niSe2 saturable absorber
Nickel diselenide (NiSe2) microspheres were synthesized using a chemical vapor deposition (CVD) method, and their nonlinear optical properties were investigated. The prepared NiSe2 exhibits good nonlinear charact...
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Article
The ceramics based on (Bi0.5Li0.5)0.9Sr0.1ZrO3-doped K0.44Na0.55Ag0.01Nb0.95Ta0.05O3 exhibit enhanced structural and electric properties
Currently, in the modification methods of K0.5Na0.5NbO3(KNN) ceramics to enhance their piezoelectric performance, key parameters such as Curie temperature are usually sacrificed. However, this trade-off limits th...
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Article
Magnetic Properties of Topological Material Candidate EuZnBi2
The single crystals of the topological material candidate EuZnBi \(_{2}\) ...
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Article
Nanoarchitectonics of yttrium-doped barium cerate-based proton conductor electrolyte for solid oxide fuel cells
As the third generation of fuel cells, solid oxide fuel cell (SOFC) provides a clean and low-pollution technology. Electrolyte material, which often plays a vital role in SOFC, has always been the focus and di...
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Article
Application of optical medical equipment imaging detection and fire needle therapy for intestinal mucosal barrier function in patients with intestinal diseases
The purpose of this study was to explore the application of optical medical device imaging detection in the treatment of intestinal diseases in patients with fire needle therapy, and to evaluate its effect on ...
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Article
Physical Properties of Antiferromagnetic Dirac Semimetal SrMnSb \(_{2}\)
We have prepared high-quality nearly stoichiometric single crystal of Dirac semimetal SrMnSb \(_{2}\) ...
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Article
Highly efficient hydrogen production performance of g-C3N4 quantum dot-sensitized WO3/Ni–ZnIn2S4 nanosheets
Metal sulfide semiconductor photocatalysts have been widely used in photocatalytic hydrogen evolution reactions due to their good light absorption properties and high photostability. However, the metal sulfide...
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Article
Photonic remote microwave frequency measurement with a tunable measurement range based on dispersion compensation technology
In this paper, a novel and efficient photonic-assisted remote frequency measurement (RFM) system with a significantly simplified structure and flexible operation range is proposed. In this system, the remote a...
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Article
Temperature Dependence of the Microstructure and Magnetic Properties of Polycrystalline GdCrO3
Polycrystalline GdCrO3 was synthesized by the solid-state reaction method. The temperature-dependent microstructure and magnetic properties were investigated systematically. Both the Raman and FTIR spectra indica...
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Article
Ultra-wideband and wide-angle linear-to-circular polarizer based on single-layer dielectric substrates
In this paper, a wideband and wide-angle transmissive linear-to-circular polarization converter (LCPC) working in the C, X and Ku bands is proposed, which is based on a single-layer dielectric substrate. In or...
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Article
Numerical predictions for the effective electrical properties of flexoelectric composites with a single inclusion
The direct flexoelectricity in dielectrics, as an electromechanical mechanism coupling electric field and strain gradient, exhibits strong size dependence and structures associated. In the present paper, the e...
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Article
Graphene-based terahertz closed-stopband tunable composite right/left-handed leaky-wave antennas
A simple scheme for the realization of the terahertz (THz) fundamental-mode tunable closed-stopband composite right/left-handed leaky-wave antennas (CRLH LWAs) is presented. The proposed CRLH LWAs are reconstr...
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Article
Study on the relaxation mechanism of residual stress in SiCp/6061Al composites based on the surface modification of reinforcement
The effect of reinforcement surface modification on the residual stress (RS) in 35vo l%SiCp/6061Al composites was studied, and the experimental conclusions were verified by finite element analysis. The results...
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Article
Modeling and simulation of functionally graded flexoelectric micro-cylinders based on the mixed finite element method
The direct flexoelectricity in solid dielectrics, as an electromechanical mechanism coupling polarization and strain gradient, exhibits strong size dependence and structures associated (geometry or microstruct...
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Article
Infrared small target detection based on saliency and gradients difference measure
In the field of infrared search and track system, we find the prior art usually has poor robustness and adapts to a single scene. Inspired by the human visual attention mechanism, an effective small target det...
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Article
Nanoscale thermal analysis of InGaAs quantum well based semiconductor disk laser with different pump geometry
Using the finite element method, thermal effects including the maximum temperature, the heat flux and the temperature gradient in the active region of semiconductor disk lasers with front and end pumped geomet...
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Article
WO3 nanosheets/g-C3N4 nanosheets’ nanocomposite as an effective photocatalyst for degradation of rhodamine B
A novel WO3 nanosheets (WO3 NS)/g-C3N4 Nanosheets’ (g-C3N4 NS) nanocomposite photocatalyst was fabricated through a simple calcination process. WO3 NS was first prepared with the aid of P123 lamellar micelles and...
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Chapter and Conference Paper
Influencing Factors of Partial Discharge of Needle-Plate Based on Acoustic Emission Detection
Partial discharge (PD) is one of the main factors leading to the failure of power system insulation and malfunction. The study of discharge characteristics is helpful to fault prevention. A needle-plate partia...
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Article
Tunable microwave photonics filter with dual pass-band based on PM-FBG and PS-FBG
In this paper, a dual pass-band microwave photonics filter with simple, commercial structure is proposed and demonstrated. The key devices are the specially designed polarization maintaining fiber Bragg gratin...
