Tunneling via surface dislocation in W/β-Ga2O3 Schottky barrier diodes

In this work, W/β-Ga₂O₃ Schottky barrier diodes, prepared using a confined magnetic field-based sputtering method,were analyzed at different operation temperatures. Firstly, Schottky barrier height increased with increasing temperature from 100 to 300 K and reached 1.03 eV at room temperature. The ideality factor decreased with increasing temperature and it was higher than 2 at 100 K. This apparent high value was related to the tunneling effect. Secondly, the series and on-...     

Preface to special issue on frontiers of chemical engineering thermodynamics

正‘‘Thermodynamics is the only physical theory of universal content concerning which I am convinced that, within the framework of the applicability of its basic concepts, it will never be overthrown."—Albert Einstein Chemical Engineering plays an essential role in modern society.It has been used to produce a wide variety of important materials,for example, the plastic drinking-water bottles, the jet fuels for transoceanic flights, and raw materials for assembling CPUs. Chemical Engineering is also on the frontline to manufacture massive masks, gloves, testing kits, and vaccines to fight against COVID-19 globally.     

Optimal dispatching strategy for residential demand response considering load participation

To facilitate the coordinated and large-scale participation of residential flexible loads in demand response(DR),a load aggregator(LA) can integrate these loads for scheduling. In this study, a residential DR optimization scheduling strategy was formulated considering the participation of flexible loads in DR. First, based on the operational characteristics of flexible loads such as electric vehicles, air conditioners, and dishwashers, their DR participation, the base to calculate the compensati...     

The Haircare Efficacy Research of Prinsepia Utilis Oil

To research the hair-care efficacy of prinsepia utilis oil. We evaluated the haircare efficacies of prinsepia utilis oil through methods such as differential scanning calorimetry(DSC), measuring difficulty level and mechanical resistance against combing of wet and dry hair, scanning electron microscopy(SEM). According to the analysis of differential scanning calorimetry(DSC), the testing sample has repairing effect on the hair α-keratin damage induced by heated blowing. According to the pictures...     

CD146 Expression Correlates with Epithelial-Mesenchymal Transition Markers and a Poor Prognosis in Gastric Cancer

CD146 has been regarded as a novel potential therapeutic target for multiple cancers. The aim of the study was to investigate the expression of CD146 in gastric cancer and evaluate its clinical-pathological and prognostic significance. The expression of CD146 and three epithelial-mesenchymal transition (EMT)-related proteins (E-cadherin, β-catenin and vimentin) was examined in 144 gastric cancers by immunohistochemistry. Fifty-nine cases (41.0%) were defined as positive for CD146 expression. We found that CD146 expression correlated positively with lymph node involvement and a poor prognosis, and retained an independent prognostic factor for gastric cancer patients. Furthermore, positive expression of CD146 was strongly associated with loss of the epithelial marker E-cadherin and acquisition of the expression of the mesenchymal markers nuclear β-catenin and vimentin. These findings suggest that CD146 might promote EMT and progression in gastric cancer, and thus may be a potential therapeutic target for patients with gastric cancers.     

Green,Sustainable Architectural Bamboo with High Light Transmission and Excellent Electromagnetic Shielding as a Candidate for Energy-Saving Buildings

Currently,light-transmitting,energy-saving,and electromagnetic shielding materials are essential for reducing indoor energy consumption and improving the electromagnetic environment.Here,we developed a cellulose composite with excellent optical transmittance that retained the natural shape and fiber structure of bamboo.The modified whole bamboo possessed an impressive optical transmittance of approximately 60% at 6.23 mm,illuminance of 1000 luminance(lux),water absorption stability(mass change r...     

Aerophilic Triphase Interface Tuned by Carbon Dots Driving Durable and Flexible Rechargeable Zn-Air Batteries

Efficient bifunctional catalysts for oxygen reduction reaction(ORR) and oxygen evolution reaction(OER) are vital for rechargeable Zn-air batteries(ZABs). Herein, an oxygen-respirable sponge-like Co@C–O–Cs catalyst with oxygen-rich active sites was designed and constructed for both ORR and OER by a facile carbon dot-assisted strategy. The aerophilic triphase interface of Co@C–O–Cs cathode efficiently boosts oxygen diffusion and transfer. The theoretical calculations and experimental studies revea...     

Tetris-Style Stacking Process to Tailor the Orientation of Carbon Fiber Scaffolds for Efficient Heat Dissipation

As the miniaturization of electronic devices and complication of electronic packaging, there are growing demands for thermal interfacial materials with enhanced thermal conductivity and the capability to direct the heat toward heat sink for highly efficient heat dissipation. Pitch-based carbon fiber(CF)with ultrahigh axial thermal conductivity and aspect ratios exhibits great potential for developing thermally conductive composites as TIMs. However, it is still hard to fabricate composites with ...     

Research on Laser Direct Deposition Process of Ti-6Al-4V Alloy

Laser direct deposition （LDD） of metallic components is an advanced technology of combining CAD/CAM （computer aided design/computer aided manufacturing）, high power laser, and rapid prototyping. This technology uses laser beam to melt the powders fed coaxiaUy into the molten pool by the laser beam to fabricate fuUy dense metallic components. The present article mainly studies the LDD of Ti-6Al-4V alloy, which can be used to fabricate aircraft components. The mechanical properties of the Ti-6Al-4V alloy, fabricated by LDD, are obtained using the tension test, and the oxygen content of used powders and deposited specimens are measured. In the present article, it can be seen that the mechanical properties obtained using this method are higher than the ones obtained by casting, and equal to those got by wrought anneal. One aircraft part has been made using the LDD process. Because of this aircraft part, with sophisticated shape, the effect of the laser scanning track on the internal soundness of the deposited part was discussed.     

Interpolation Fitting Algorithm in Time-Space Domain of Differential Barometric Altimetry

In order to overcome the limitations of a unitary reference station in mobile communication positioning network differential barometric altimetry (DBA) and broaden the action scope of the reference station and improve positioning accuracy of elevation, an integrated interpolation algorithm model based on generalized extended approximation (GEA) algorithm and Kriging interpolation in time-space domain of reference station is proposed. In the time domain, barometric measured data is considered the maximum value estimated by bilateral extension to avoid wrong direction of estimation, which is approaching true value. In the spatial domain, barometric relevance among multiple reference stations is utilized, the weighted coefficients of multiple reference stations is calculated by the integrated algorithm model based on the GEA algorithm and Kriging interpolation. The impact of each reference station to the measured station is quantified, so that a virtual reference station is constructed, which can overcome the limitation of barometric correction by a unitary reference station. In addition, the measurement error due to irregular change in atmospheric pressure will be eliminated.