A5008136134- Photonic Crystals and Applications
- Additive Manufacturing Materials and Processes
- Ferroelectric and Piezoelectric Materials
- High Entropy Alloys Studies
- Photorefractive and Nonlinear Optics
- Welding Techniques and Residual Stresses
- Photonic and Optical Devices
- Advanced Measurement and Metrology Techniques
- Solid State Laser Technologies
- Gas Sensing Nanomaterials and Sensors
- Luminescence Properties of Advanced Materials
- Optical Coatings and Gratings
- Additive Manufacturing and 3D Printing Technologies
- Fern and Epiphyte Biology
- Advanced Fiber Laser Technologies
- Advanced Photocatalysis Techniques
- Microwave Dielectric Ceramics Synthesis
- Shape Memory Alloy Transformations
- Non-Destructive Testing Techniques
- Transition Metal Oxide Nanomaterials
- TiO2 Photocatalysis and Solar Cells
- Metamaterials and Metasurfaces Applications
- Aluminum Alloy Microstructure Properties
- Advanced Thermoelectric Materials and Devices
- Optical Systems and Laser Technology
Inner Mongolia University of Science and Technology
2019-2025
Shandong Jianzhu University
2024
North Minzu University
2017-2024
Shanghai University
2019-2020
Shanghai University of Engineering Science
2019
Shandong University
2012-2018
State Key Laboratory of Crystal Materials
2012-2016
University of Science and Technology of China
2008-2012
Chinese Academy of Sciences
2009-2010
Hefei Institutes of Physical Science
2010
Abstract CeO 2 /TiO nanobelt heterostructures are synthesized via a cost‐effective hydrothermal method. The as‐prepared nanocomposites consist of nanoparticles assembled on the rough surface TiO nanobelts. In comparison with P25 colloids, surface‐coarsened nanobelts, and nanoparticles, exhibit markedly enhanced photocatalytic activity in degradation organic pollutants such as methyl orange (MO) under either UV or visible light irradiation. performance is attributed to novel...
A needle of strong longitudinally polarized field with homogeneous intensity along the optical axis, long depth focus, and subdiffraction beam size can be generated by focusing a radially light high-NA lens diffractive element (DOE) belts. method combining global-search-optimization algorithm tight properties is proposed to design DOE. Based on properties, incident divided into two parts: areas B. We discover that longitudinal in focal region mainly dependent number belts area B but not total
One‐dimensional (1D) ferroelectric nanostructures, such as nanowires, nanorods, nanotubes, nanobelts, and nanofibers, have been studied with increasing intensity in recent years. Because of their excellent ferroelectric, ferroelastic, pyroelectric, piezoelectric, inverse ferroelectric‐photovoltaic (FE‐PV), other unique physical properties, 1D nanostructures widely used energy‐harvesting devices, nonvolatile random access memory applications, nanoelectromechanical systems, advanced sensors,...
A SnO2 gas sensor was prepared by a two-step oxidation process whereby Sn(II) precursor partially oxidized hydrothermal and the resulting Sn3O4 nanoplates were thermally to yield nanoplates. The selective responsive toward ethanol at temperature as low 43 °C. This sensing stems from rapid charge transport within presence of high-energy (001) facets available for oxygen chemisorption. SnO2/TiO2 nanobelt heterostructures fabricated similar in which TiO2 nanobelts acted support epitaxial growth...
Uniform well-defined nanostructured BiOBr microspheres have been fabricated via a simple hydrothermal method in the presence of cetyltrimethylammonium bromide (CTAB) and ethylene glycol (EG). The heavy metal ion adsorption on as-synthesized was systematically assessed by measuring residual concentration during process using colorimetric for Cr(VI) concentration, an extraction-colorimetric Cd(II) Pb(II) concentrations. showed good removal capacity ions (Cr, Cd, Pb), excellent properties low...
Aiming at the high-value application of rare earth elements lanthanum (La), an Al-50% La alloy was selected and prepared in a vacuum medium-frequency induction furnace. The geometric characteristics powders were compared studied, with by two different methods: mechanical pulverization gas atomization. results showed that Al-49.09% master obtained, only intermediate phase containing experimental Al11La3. From perspectives chemical composition, has high yield. Additionally, Al-La controllable...
Surface engineering of TiO2 nanobelts by the controlled assembly functional heterostructures represents an effective approach for synthesis high-performance photocatalysts. In this study, we prepared a novel Bi2O3/Bi4Ti3O12/TiO2 double-heterostructured nanobelt depositing bismuth hydroxide onto surface. A thermal annealing treatment led to formation Bi4Ti3O12 interlayer that functioned as bridge link Bi2O3 and TiO2. The exhibited better UV light photocatalytic performance than commercial...
24CrNiMo alloy steel is often used to fabricate high-speed railway brake discs. To improve the properties of prepared via laser melting deposition (LMD) and investigate role rare-earth (RE) element in LMD steel, three types powders with different contents RE Y (0, 0.02, 0.2 wt%) were used. The morphology, composition, distribution phases defects alloys examined using optical microscopy, scanning electron backscatter diffraction, X-ray transmission microscopy. mechanical determined Vickers...
A two-dimensional anisotropic annular photonic crystal slab structure composed of circular air holes and dielectric rods with finite thickness in a triangular lattice is presented to achieve an absolute band gap. Positive uniaxial Tellurium introduced the extraordinary axis parallel extension direction rods. The role each geometric parameter investigated by employing conjugate-gradient method. large mid-gap ratio realized optimization. flat called as anomalous group velocity within two gaps...
Kang<italic>et al.</italic>summarized the mechanism of formation anti-site defects in LiNbO<sub>3</sub>/LiTaO<sub>3</sub>crystals and measures for growth defect free to give readers an overview this field.
Advanced thermoelectric technology offers the potential to convert waste heat into useful electricity, and a mechanism of transmission-free methods for solid state cooling. A low thermal conductivity is prerequisite obtaining high efficiency materials. It challenge achieve without simultaneously destroying electric conductivity, which 'phonon glass/liquid–electron crystal' proposed. To realize phonon glass–electron crystal, host–guest cage crystal system considered, while liquid–electron...
Ytterbium and erbium codoped crystals have attracted considerable interest in the application of eye-safe laser, upconversion low-loss optical communication. Despite lithium niobate (LiNbO3, LN) single crystal has been accepted as an ideal matrix for Yb3+ Er3+ ions possessing significant potential self-upconversion Yb Er near-stoichiometric LN (NSLN) rarely studied. This is due to difficulty NSLN growth compared with that congruent (CLN). In this paper, Yb, (Yb, Er:NSLN) was grown by...
Nd3+ and Mg2+ co-doped LiTaO3 (Nd:MgO:LT) crystal has great potential for applications in self-frequency doubling (SFD) lasers, self-optical parametric oscillation (SOPO) infrared lasers. However, a related high performance laser device not yet been realized. No reliable data on the basic physical properties of Nd:MgO:LT have obtained, because lack quality crystals available due to difficulty growing this crystal. In paper, by optimizing growth parameters thermal field means simulation, was...
MgO-doped stoichiometric LiTaO 3 (MgO:SLT) is one of the most promising nonlinear materials. However, its industrial application limited by poor optical quality caused nonhomogeneous distribution magnesium. Herein, an MgO:SLT polycrystalline powder was synthesized with a homogenous magnesium wet-chemical spray-drying method. A comparative investigation coordination state Ta ions in powders this method and conventional solid-state reaction performed X-ray photoelectron spectroscopy. It proved...
A coupled heat source model that combined a Gauss surface with cylindrical volumetric was introduced to simulate temperature field distribution and melt pool characteristics using finite element simulation (FEM) method for the deep narrow pools formed in laser powder bed fusion (L-PBF) aiming at commercial pure titanium (CP-Ti). For comparison, same simulations double ellipsoid were also performed. The simulated geometries match well measurements, an average error of 1% depth 7% width. Based...
Positive-negative refraction based on overlapping bands in a two-dimensional square lattice photonic crystal was studied by theoretical analysis and numerical simulation. An incident beam launching into this under certain conditions will excite simultaneously the negative refracted mode at second band positive third band, which overlaps with band. This positive-negative effect can be manipulated adjusting angle. special mechanism of used to realize splitting more design flexibilities...
Low-alloy steel samples were successfully fabricated by selective laser melting (SLM). The evolution of the microstructure and mechanical properties investigated with different values energy area density (EAD). results revealed that initial solidification microstructures single tracks EADs all martensite. However, bulk under not martensite differed significantly even from one another. When EAD increased 47 to 142 J/mm2, mixed lower bainite austenite changed granular bainite; further,...