Materials Literature
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Silicon carbide (SiC) is an electrical semiconductor with a wide bandgap. Recently, highly conductive liquid-phase sintered SiC (LPS-SiC) ceramics have been developed by the successful doping of N atoms into a SiC lattice. Fully dense N-doped SiC ceramics with electrical conductivity as high as 300 S·cm−1 at 25 °C hav…
Batch growth of high-mobility (μ FE > 10 cm 2 V –1 s –1 ) molybdenum disulfide (MoS 2 ) films can be achieved by means of the chemical vapor deposition (CVD) method at high temperatures (>500 °C) on rigid substrates. Although high-temperature growth guarantees film quality, time- and cost-consuming transfer processes…
The Protein Data Bank (PDB) (wwPDB consortium, 2019) is the single global archive of experimentally determined three-dimensional (3D) structure data of biological macromolecules. The continuing growth in the numbers, size and complexity of macromolecular structures in the PDB archive, coupled with the rapid growth of…
Hydrogen production by microalgae is a promising technology to achieve sustainable and clean energy. Among various photosynthetic microalgae able to produce hydrogen, Chlamydomonas reinhardtii is a model organism widely used to study hydrogen production. Oxygen produced by photosynthesis activity of microalgae has an…
Flexible metal for Electronic Skin Amorphous alloys have never been such a viable approach for flexible electronics because now their excellent properties are not compromised by the structure and morphology. A collaborative team of scientists led by Prof Sanghun Jeon from Korea Advanced Institute of Science and Techno…
In multi-layer welding, the interaction between the weld beads had a great impact on the performance of the overall joint. Therefore, experimental research and thermal-plastic analysis of 316L stainless steel multi-layer hybrid laser-arc welding were performed. The reasonable heat sources were proposed to simulate hyb…
Scheffe’s second degree polynomial was used to formulate models for predicting the swelling potential, California bearing ratio, unconfined compressive strength and loss of strength on immersion durability of quarry dust treated soil. These models could predict the swelling potential, California bearing ratio, unconfi…
A thermo-metallurgical-mechanical coupling model is developed to predict temperature, solid-state phase and residual stress fields for the multi-track multi-layer selective laser melting process of Ti6Al4V. The model considers the solid-state phase transformation (SSPT) and powder-liquid-solid transition which include…
Herein, SnO2- and ZnO2-doped (1.5 wt.%) composite Cu powder was prepared by mechanical alloying (MA) respectively, and both the contact materials of oxide-doped Cu alloys were subsequently obtained by canned hot-pressing powder sintering with hot extrusion combined. Scanning electron microscopy (SEM), laser scanning c…
The thermal stability of second-phase nanoparticles plays a critical role in determining the applicability and durability of precipitation-hardened alloys for engineering applications at elevated temperatures. In this work, the temporal evolutions of coherent L12 nanoparticles were quantitatively evaluated in a CoCrNi…
Self-setting calcium sulphate hemihydrate (CSH) composites were prepared by reinforcing with BiFeO3 (BF, a multiferroic material) with an aim to induce in situ charge generating capacity and increase its strength. CSH-BF composites (0–15 wt% BF), prepared by ball-milling, were evaluated in terms of setting and injecta…
A significant requirement for a bone implant is to let bone cells grow better. However, how to increase the cellular activity of the scaffold at a certain elastic modulus remains unclear. Here, we developed a method to derive the relationship between design parameters, porosity, and mechanical properties of uniform st…
The ordered L12 phase generally appears as dispersed precipitates in FCC multi-principal element alloys (MPEAs). In this work, a single L12 ordered intermetallic is obtained in the annealed equimolar FeCoNiV alloy. Experiments show that the FCC to L12 ordering transformation occurs below 778±2 °C, accompanied by latti…
An equiatomic CoCrFeNiMn high-entropy alloy (HEA) powder is produced by vacuum induction melting gas-atomization with argon gas. A detailed characterization reveals that gas atomized HEA powder is suitable for powder-bed-fusion additive manufacturing (PBFAM). Therefore, the powder with size ranging from 45 to 106 μm i…
Compared with the traditional laparoscopic surgery, the preoperative planning of robot-assisted laparoscopic surgery is more complex and essential. Through the analysis of the surgical procedures and surgical environment, the laparoscope arm preoperative planning algorithm based on the artificial pneumoperitoneum mode…
In this research study a novel functionally graded metal syntactic foam (FG-MSF) was manufactured using expanded perlite and activated carbon particles. A tailored arrangement of these fillers was infiltrated with ZA27 alloy in a single-step process. The structure of the FG-MSF contained two individual layers: ZA27/ex…
Research interests of compact magnetically levitated motors have been strongly increased in development of durable and biocompatible mechanical circulatory support (MCS) devices for pediatric heart disease patients. In this study, an ultra-compact axial gap type self-bearing motor with 5-degrees of freedom (DOF) activ…
In this paper, a composition of known high glass-forming ability, Cu42Zr42Al8Ag8 and a novel Cu42Zr42Al8Ag4Sn4, were produced by suction-casting. After rapid solidification of both alloys, X-ray diffraction patterns along with crystallite size estimation by Scherrer equation and scanning electron microscopy images rev…
A nanometer-scale second phase in metallic glass (MG) heterostructures is effective to improve mechanical properties. In this work, molecular dynamics simulations are conducted to investigate the influence of various critical structural aspects such as the size/volume fraction, distribution of a nanoscale secondary ph…
Cu-3 wt% Ag-1 wt% Zr alloys were well prepared by gas atomization followed by hot isostatic pressing (HIP) and forging. The effects of HIP temperature on the microstructure and mechanical properties of the as-HIPed and as-forged alloys were investigated, respectively. The alloy HIPed at 830 °C has an inhomogeneous mic…