-
Article
Constructing Priors for Geophysical Inversions Constrained by Surface and Borehole Geochemistry
Prior model construction is a fundamental component in geophysical inversion, especially Bayesian inversion. The prior model, usually derived from available geological information, can reduce the uncertainty o...
-
Article
Highly efficient vortex generation at the nanoscale
Control of the angular momentum of light at the nanoscale is critical for many applications of subwavelength photonics, such as high-capacity optical communications devices, super-resolution imaging and optica...
-
Article
Improvement of ultrasonic cavitation and pum** effect in microhole EDM
Electrical discharge machining (EDM) is frequently employed in micropore machining of difficult-to-cut materials as a result of the contactless characteristics. However, debris produced by electrode discharge ...
-
Article
Axial and composite ultrasonic vibration-assisted face grinding of silicon carbide ceramics: grinding force and surface quality
Axial ultrasonic vibration-assisted face grinding (AUVAFG) of SiC has the characteristics of high efficiency and serious damage. With the aim of solving the problem of serious surface damage in AUVAFG of SiC c...
-
Article
Thermoelastic geometrically nonlinear analysis and optimization of variable stiffness composite plates in presence of buckling
The thermal environment enhances the complexity of buckling failure of variable stiffness composite plates. Influences of the high temperature and large deflection should be well considered in both the bucklin...
-
Article
Experimental research and multi-objective optimization of ultrasonic vibration–assisted EDM for Ti6Al4V micro-holes
Ultrasonic vibration–assisted electrical discharge machining (UEDM) was studied to improve the machining performance for TC4 micro-holes. First, a computational fluid dynamic (CFD) model of inter-electrode gap...
-
Article
Open AccessPangolin-inspired untethered magnetic robot for on-demand biomedical heating applications
Untethered magnetic miniature soft robots capable of accessing hard-to-reach regions can enable safe, disruptive, and minimally invasive medical procedures. However, the soft body limits the integration of non...
-
Article
Creep-feed grinding of single crystal nickel-base turbine blade fir-tree roots: tool wear, grinding force, temperature, and surface integrity
This study presents a comprehensive and comparative investigation on creep-feed grinding (CFG) of single crystal nickel-base turbine blade fir-tree roots with and without surface burn by using alumina abrasive...
-
Article
High catalytic activity of La0.6Sr0.4Co0.2Fe0.8O3-δ prepared by the spray pyrolysis towards the oxygen reduction reaction
Non-precious transition metal oxides demonstrate significant potential as cost-effective alternatives for noble metals electrocatalysts. The perovskite-type oxides with the general ABO3 chemical formula of La0.6S...
-
Article
A low-rank spectral method for learning Markov models
This paper concerns with the problem of estimating the transition matrix of a low-rank discrete-state Markov model from its state-transition trajectories. We propose a low-rank spectral method via the best rank-r
-
Article
The effect of ultrasonic amplitude on the performance of ultrasonic vibration-assisted EDM micro-hole machining
A study on ultrasonic vibration-assisted electrical discharge machining (UVEDM) micro-hole, which mainly includes three key designs, was conducted to improve the machining performance of the electric discharge...
-
Article
Interface construction of NiCo LDH/NiCoS based on the 2D ultrathin nanosheet towards oxygen evolution reaction
Carbon-free hydrogen as a promising clean energy source can be produced with electrocatalysts via water electrolysis. Oxygen evolution reaction (OER) as anodic reaction determines the overall efficiency of wat...
-
Article
Electrocatalytic activity enhancement of N,P-doped carbon nanosheets derived from polymerizable ionic liquids
A facile preparation method was developed to obtain two-dimensional (2D) metal-free N, P-co-doped carbon nanosheets with sp2/sp3 interface derived from polymerizable ionic liquids (PIL) and ammonium nitrate (NH4N...
-
Article
Biomass-derived carbon for ORR: pine needles as a single source for efficient carbon electrocatalyst
Oxygen reduction reaction (ORR) is an important electrode reaction for several power sources. However, the reaction is sluggish and expensive noble-metal catalyst are generally needed. The high price of the no...
-
Article
Characterization and analysis of a novel structural SOI piezoresistive pressure sensor with high sensitivity and linearity
A novel structural piezoresistive pressure sensor with four-grooved diaphragm combined with rood beam has been proposed for low pressure measurements of less than 1 psi. The proposed sensor chip is fabricated ...
-
Article
A Novel Imperialist Competitive Algorithm for Scheme Configuration Rules Mining of Product Service System
When designing a product service system scheme, the most critical issue is how to quickly and accurately translate customer value requirements into scheme technical characteristics. It is difficult to solve th...
-
Article
Influence of bubbles on micro-dimples prepared by electrochemical micromachining
Micro-dimples are the basic surface textures that have played an important role in reducing or increasing friction, anti-wear, decreasing vibration, anti-adhesion, and cree**. Electrochemical micromachining ...
-
Article
Highly efficient K-Fe/C catalysts derived from metal-organic frameworks towards ammonia synthesis
Fe-based catalysts have been discovered as the best elementary metal-based heterogeneous catalysts for the ammonia synthesis in industrial application during the last century. Herein, a novel and scalable stra...
-
Article
Controlled Synthesis of Copper-Doped Molybdenum Carbide Catalyst with Enhanced Activity and Stability for Hydrogen Evolution Reaction
As a promising alternative to precious metal catalysts, Molybdenum carbide (MoC) still cannot compete with commercial Pt catalysts in many aspects. In the present work, we develop a simple carburization method...
-
Article
Open AccessDirect conversion of CO and H2O into liquid fuels under mild conditions
Although enormous progress has been made in C1 chemistry and CO2 conversion in recent years, it is still a challenge to develop new carbon resource transformation protocols especially those lead to the production...
