A5062204401- Advanced Surface Polishing Techniques
- MXene and MAX Phase Materials
- 2D Materials and Applications
- Nanowire Synthesis and Applications
- Force Microscopy Techniques and Applications
- Thin-Film Transistor Technologies
- Aluminum Alloys Composites Properties
- Magnesium Alloys: Properties and Applications
- Electronic and Structural Properties of Oxides
- Advancements in Battery Materials
- Advanced Thermoelectric Materials and Devices
- Titanium Alloys Microstructure and Properties
- Advanced Semiconductor Detectors and Materials
- ZnO doping and properties
- Metal and Thin Film Mechanics
- Silicon and Solar Cell Technologies
- Boron and Carbon Nanomaterials Research
- Silicon Nanostructures and Photoluminescence
- Bauxite Residue and Utilization
- Diamond and Carbon-based Materials Research
- Catalysis for Biomass Conversion
- Nanomaterials for catalytic reactions
- Supercapacitor Materials and Fabrication
- Advanced Materials and Mechanics
- Molten salt chemistry and electrochemical processes
Xi'an Jiaotong University
2015-2025
The Ohio State University
2014
Northwestern Polytechnical University
2014
Inorganic semiconductors are vital for a number of critical applications but almost universally brittle. Here, we report the superplastic deformability indium selenide (InSe). Bulk single-crystalline InSe can be compressed by orders magnitude and morphed into Möbius strip or simple origami at room temperature. The exceptional plasticity this two-dimensional van der Waals inorganic semiconductor is attributed to interlayer gliding cross-layer dislocation slip that mediated long-range In-Se...
Despite their energy-efficient merits as promising light-weight structural materials, magnesium (Mg) based alloys suffer from inadequate corrosion resistance. One primary reason is that the native surface film on Mg formed in air mainly consists of Mg(OH)2 and MgO, which porous unprotective, especially humid environments. Here, we demonstrate an environmentally benign method to grow a protective Mg/Mg alloy samples at room temperature, via direct reaction already-existing with excited CO2....
Abstract Inorganic semiconductors exhibit multifarious physical properties, but they are prevailingly brittle, impeding their application in flexible and hetero-shaped electronics. The exceptional plasticity discovered InSe crystal indicates the existence of abundant plastically deformable two-dimensional van der Waals (2D vdW) materials, conventional trial-and-error method is too time-consuming costly. Here we report on discovery tens potential 2D chalcogenide crystals with plastic...
The mechanism responsible for deformation-induced crystalline-to-amorphous transition (CAT) in silicon is still under considerable debate, owing to the absence of direct experimental evidence. Here we have devised a novel core/shell configuration impose confinement on sample circumvent early cracking during uniaxial compression submicron-sized Si pillars. This has enabled large plastic deformation and situ monitoring CAT process inside transmission electron microscope. We demonstrate that...
Abstract As a typical hard but brittle material, Si tends to fracture abruptly at stress well below its theoretical strength, even if the tested volume goes down submicron scale, which materials are usually nearly free of flaws or extended defects. Here, via thermal–oxidation–mediated healing surface that is preferred site for cracks dislocations initiation, premature can be effectively inhibited and over 50% homogeneous plastic strain with near‐theoretical strength (twice value unhealed...
Ceramics possess high temperature resistance, extreme hardness, chemical inertness and a lower density compared to metals, but there is currently no technology that can produce satisfactory joints in ceramic parts preserve the excellent properties of material. The lack suitable joining techniques for ceramics thus major road block their wider applications. Herein we report weld nanowires, with mechanical strength stronger than pristine nanowires. Using an advanced aberration-corrected...
Si pillars fabricated by focused ion beam (FIB) had been reported to have a critical size of 310–400 nm, below which their deformation behavior would experience brittle-to-ductile transition at room temperature. Here, we demonstrated that the size-dependent was actually stemmed from amorphous (a-Si) shell introduced during FIB fabrication process. Once a-Si crystallized, behave brittle again with modulus comparable bulk counterpart. The analytical model developed has proved be valid in...
Abstract In the absence of externally applied mechanical loading, it would seem counterintuitive that a solid particle sitting on surface another could not only sink into latter, but also continue its rigid-body motion towards interior, reaching depth as distant thousands times diameter. Here, we demonstrate such case using in situ microscopic well bulk experiments, which diamond nanoparticles ~100 nm size move iron up to millimeter depth, at temperature about half melting point iron. Each...
The sodiation and desodiation process of MoS<sub>2</sub>was characterized by in situ TEM technique. structural evolutions MoS<sub>2</sub>, especially its phase transition from 2H to 1T-MoS<sub>2</sub>and the occupancy Na ions during intercalation are recognized.
Abstract While metals can be readily processed and reshaped by cold rolling, most bulk inorganic semiconductors are brittle materials that tend to fracture when plastically deformed. Manufacturing thin sheets foils of is therefore a bottleneck problem, severely restricting their use in flexible electronic applications. It recently reported few single‐crystalline 2D van der Waals (vdW) semiconductors, such as InSe, deformable under compressive stress. Here it demonstrated intralayer toughness...
The electrochemically driven sodiation and desodiation process in a CuO nanowire was characterized by using <italic>in situ</italic> TEM. This work contributes to understanding of the electrochemical conversion mechanism anodes applied NIBs.
Silicon is used as a prominent case to demonstrate the dramatic effects of helium ion microscope nanofabrication. Structurally, submicrometer Si pillar can turn completely amorphous at He+ doses typically for micromachining, forming nanobubbles higher doses. In terms mechanical properties, flow stress decreases markedly with increasing dosage, and softened exhibits spread-out plastic flow. As service our authors readers, this journal provides supporting information supplied by authors. Such...
Haze (known as “Mai” 霾 in Chinese) threatens the health of billions people across globe. To begin solving this problem without severely slowing down economy, one has to mechanistically and geographically pinpoint sources these pollutants, key which is thoroughly characterize fingerprint particulates. Here we present a broad survey classification thousands individual airborne particu-lates by using Scanning Electron Microscope (SEM) measure their diverse mor-phologies chemistries, could...