Materials Literature
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Bài báo trình bày kết quả nghiên cứu công nghệ nâng cao cơ tính và mật độ của vật liệu molipđen bằng phương pháp gia công áp lực (rèn nóng). Kết quả cho thấy sau khi rèn mật độ và cơ tính tổng hợp của vật liệu tăng lên rõ rệt. Đã xác định được khoảng nhiệt độ tối ưu và tỉ số biến dạng cho quy trình công nghệ rèn đối v…
The combination of heterogeneous catalysts and enzymes, in so-called hybrid catalysts, is an attractive strategy to effectively run chemoenzymatic reactions. Yet, the preparation of such bifunctional materials remains challenging because both the inorganic and the biological moieties must be integrated in the same sol…
This chapter gives an overview of the current technologies for normally-off GaN-based high electron mobility transistors (HEMTs). First, the normally-off HEMT “cascode” is briefly described. However, in power electronics applications, “true” normally-off HEMTs are required. Hence, the most common technological solutio…
Cationic polymethines have been subdivided on the basis of the nature of the acceptor and donor groups. In the dyes most used in biology and medicine, acceptor and donor groups are nitrogen. According to whether both, one, or neither nitrogens are components of rings, the dyes are respectively called cyanines, hemicya…
This chapter presents an overview of recent developments in the integration of 2D materials, specifically graphene and MoS2, with nitride semiconductors for electronics and optoelectronics. The state-of-the-art approaches for the fabrication of heterojunctions between these two classes of materials are discussed, cons…
Cocoa is widely used by confectionary industries as a powder raw material for chocolate production. The chemical properties such as high- or low-fat content determine the functionality of the cocoa powder and constitute as a major factor in controlling the behavior of the final product. Additionally, the physicochemic…
Superaustenitic steel Sanicro 25 has been subjected to in-phase and out-of-phase thermomechanical fatigue cycles in the temperature range from 250°C to 700°C. Both constant strain rate cycling and cycling with 10 minutes dwell at peak temperature were applied. The effect of the dwells on the cyclic response, internal…
Empirical fitting of parameters in approximate density functionals is commonplace. Such database fits conflate errors in the self-consistent density with errors in the energy functional, but density-corrected DFT (DC-DFT) separates these two. Three examples both show the pitfalls and how they can be avoided: Catastrop…
We report the discovery of a pristine crystalline 3D carbon that is magnetic, electrically conductive and stable under ambient conditions. This carbon material, which has remained elusive for decades, is synthesized by using the chemical vapor deposition (CVD) technique with a particular organic molecular precursor 3,…
Structured light with designable intensity, polarization and phase fields is today of high relevance, with application ranging from imaging, metrology, optical trapping, ultracold atoms, classical and quantum communications and memory. Specifically, vortex and vector beams can be generated directly in the laser cavity…
The ability to perform noninvasive, non-contact measurements of electric signals produced by action potentials is essential in biomedicine. A key method to do this is to remotely sense signals by the magnetic field they induce. Existing methods for magnetic field sensing of mammalian tissue, used in techniques such as…
Invertible Bloom Filter (IBF) is a data structure, which employs a small set of hash functions. An IBF allows for an efficient insertion and, with high probability, for an efficient extraction of the data. However, the success probability of the extraction depends on the storage overhead of an IBF and the amount of th…
Folds naturally appear on nanometrically thin (also called 2D) materials after exfoliation, eventually creating folded edges across the resulting flakes. In the present work, we investigate the adhesion and flexural properties of single and multilayered 2D materials upon folding. This is accomplished by measuring and…
Abstract To elucidate novel molecular mechanisms of known drugs, efficient and feasible computational methods for predicting potential drug-target interactions (DTI) would be of great importance. A novel calculation model called DLDTI was generated for predicting DTI based on network representation learning and convol…
Light-emitting diodes (LEDs) have made tremendous progress in the past 15 years and have reached to a point where they are reinventing and redefining artificial lighting. Nevertheless, in their own realm, they suffer from a decrease in efficiency at higher currents. Thus, a better understanding of the mechanisms leadi…
Polymeric carbon nitrides (PCNs) have emerged as promising heterogeneous photocatalysts for organic transformations as they are metal-free, inexpensive, and possess suitable bandgaps, and excellent chemical- and photo-stability. However, current application of PCNs in organic synthesis is rather limited to several wel…
The collected articles provide the readers with the results of scientific research and engineering decisions in the area of materials science, building engineering, civil engineering and environmental engineering. Short reports were presented at International Conference on Materials Science and Engineering (ICMSE 2019…
Life as we know it does not exist without water. This vital resource is paramount to our biological existence, as well as our physical world, through the critically intertwined relationship between...
Typical devices based on compound semiconductors including GaN and related materials are made of layered multiheterostructures, which require epitaxial growth on appropriate substrates. Owing to the fundamental difficulty of growing GaN bulk crystals using procedures established for other semiconductors, this chapter…
This chapter presents general information on packed column supercritical fluid chromatography (pSFC) and capillary supercritical fluid chromatography (cSFC). It reviews the application of SFC to analytical scale separations of petroleum related compounds. Simulated distillation (SIMDIST) is used in the petroleum indus…