A5082810058- Advanced Materials Characterization Techniques
- High Entropy Alloys Studies
- High-Temperature Coating Behaviors
- Semiconductor materials and devices
- Microstructure and Mechanical Properties of Steels
- Metallic Glasses and Amorphous Alloys
- 3D IC and TSV technologies
- Advancements in Semiconductor Devices and Circuit Design
- Microstructure and mechanical properties
- Intermetallics and Advanced Alloy Properties
- Covalent Organic Framework Applications
- Electronic Packaging and Soldering Technologies
- Integrated Circuits and Semiconductor Failure Analysis
- Metal Alloys Wear and Properties
- Nuclear Materials and Properties
- Metal and Thin Film Mechanics
- Hydrogen embrittlement and corrosion behaviors in metals
- Membrane Separation and Gas Transport
- Metal-Organic Frameworks: Synthesis and Applications
- Aluminum Alloy Microstructure Properties
- Magnetic Properties and Applications
- Advanced Welding Techniques Analysis
- Phase-change materials and chalcogenides
- Welding Techniques and Residual Stresses
- High Temperature Alloys and Creep
Institute of Solid State Physics
2024
Chinese Academy of Sciences
2021-2024
Northwestern Polytechnical University
2022-2024
University of Science and Technology Beijing
2010-2024
Guangxi University
2013-2024
Hefei Institutes of Physical Science
2024
Sun Yat-sen University
2024
Anhui Polytechnic University
2023
China Academy of Engineering Physics
2023
Oak Ridge National Laboratory
2015-2022
Fabrication of crystalline covalent triazine frameworks (CTFs) under mild conditions without introduction carbonization is a long-term challenging subject. Herein, tandem transformation strategy was demonstrated for the preparation highly CTFs with high surface areas and metal- solvent-free conditions. CTF-1 staggered AB stacking order (orange powder) obtained in presence catalytic amount superacid at 250 °C transformed to an eclipsed AA (greenish area 646 m2 g-1 through annealing 350...
Abstract The published external quantum efficiency data of the world-record CdTe solar cell suggests that device uses bandgap engineering, most likely with a x Se 1− alloy layer to increase short-circuit current and overall efficiency. Here atom probe tomography, transmission electron microscopy beam-induced are used clarify dependence content on photoactive properties layers in bandgap-graded cells. Four cells were prepared 50, 100, 200 400 nm-thick CdSe reveal formation, growth,...
Abstract A series of F‐substituted Na 2/3 Ni 1/3 Mn O 2− x F ( = 0, 0.03, 0.05, 0.07) cathode materials have been synthesized and characterized by solid‐state 19 23 NMR, X‐ray photoelectron spectroscopy, neutron diffraction. The underlying charge compensation mechanism is systematically unraveled absorption spectroscopy electron energy loss (EELS) techniques, revealing partial reduction from 4+ to 3+ upon F‐substitution. It revealed that not only but also participates in the redox reaction...
Copper-exchanged zeolite chabazite (Cu-SSZ-13) was recently commercialized for the selective catalytic reduction of NO X with ammonia in vehicle emissions as it exhibits superior reaction performance and stability compared to all other catalysts, notably Cu-ZSM-5. Herein, 3D distributions Cu well framework elements (Al, O, Si) both fresh aged Cu-SSZ-13 Cu-ZSM-5 are determined nanometer resolution using atom probe tomography (APT), correlated activity characterizations. Both catalysts contain...
Abstract The incorporation of supramolecular macrocycles into porous organic polymers may endow the material with enhanced uptake specific guests through host−guest interactions. Here we report a solvent and catalyst-free mechanochemical synthesis pillar[5]quinone (P5Q) derived multi-microporous hydrophenazine linkages (MHP-P5Q), which show unique 3-step N 2 adsorption isotherm. In comparison analogous microporous hydrophenazine-linked (MHPs) obtained using simple twofold benzoquinones,...
Deformation of ductile crystalline-amorphous nanolaminates is not well understood due to the complex interplay interface mechanics, shear banding, and deformation-driven chemical mixing. Here we present indentation experiments on 10 nm nanocrystalline Cu-100 amorphous CuZr model multilayers study these mechanisms down atomic scale. By using correlative atom probe tomography transmission electron microscopy find that crystallographic slip bands in Cu layers coincide with noncrystallographic...
Abstract Ionic liquids (ILs) have recently been developed as a novel class of lubricant anti-wear (AW) additives, but the formation mechanism their wear protective tribofilms is not yet well understood. Unlike conventional metal-containing AW additives that self-react to grow tribofilm, metal-free ILs require supplier metal cations in tribofilm growth. The two apparent sources are contact surface and debris, latter contains important ‘historical’ interface information often overlooked. We...
Give me more fluorines: introduction of fluorine in the structure Covalent Triazine Frameworks can improve their CO<sub>2</sub>adsorption. Materials with optimal content and narrow nanopore distribution are promising CO<sub>2</sub>scavengers.
Ultrathin two-dimensional (2D) monolayer atomic crystal materials offer great potential for extending the field of novel separation technology due to their infinitesimal thickness and mechanical strength. One difficult ongoing challenge is perforate 2D material with subnanometer pores precision sieving similarly sized molecules. Here, we demonstrate exceptional performance ionic liquid (IL)/graphene hybrid membranes challenging CO2 N2. Notably, ultrathin ILs afford dynamic tuning size...