Materials Literature
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can show a very complex structure on account of multiple intra-f shell transitions occurring in the presence of random crystal fields. We demonstrate that two-dimensional correlation analysis, applied to such time-integrated luminescence spectra measured as a function of excitation power, allows us to gain substantial…
The effects of the size of Si powder on the thermal conductivity and strength of sintered reaction-bonded silicon nitride (SRBSN) were investigated. Si powders with various sizes were prepared by controlling the high-energy milling duration of the starting Si powder, where the median Si size varied from 3.97 to 0.62 µ…
Abstract This theoretical investigation develops analytical concepts on how to realize magnetic fields for the Multi to Mega Tesla realm within the range from milli to nano volumes and periods. The fields are anticipated to be realized using solenoids with multi-walled carbon (MWCNT) nanostructure composite metal wind…
In this study, chemical vapor deposition-synthesized heteroatom graphene (HGr) bioelectronic interfaces have been developed for ultrafast, all-electronic detection and analysis of molecules by driving them through tiny holes-or atompores-in a thin lattice of the graphene sheet, including the efforts toward facilitatin…
This work describes and evaluates the changes in agave fibres occurring during a green pulping process by microscopy and spectroscopy techniques, providing a comprehensive and quantitative view of the delignification of agave (Agave atrovirens) fibres. The effects of 80% acetic acid concentration and 0.3% hydrochloric…
Herein, we report the formation and properties of a rare example of high-performance composite membranes from polybisbenzimidazobenzophenanthroline-dione (BBB) that do not sustain a flame or burn with smoke nor show melt dripping. In addition, this material possesses a low density and very high thermal stability (char…
Magnesium (Mg) and its alloy as promising biodegradable orthopaedic implants have gained immense attention by virtue of their superior biocompatibility and mechanical compatibility. In order to increase the long-term corrosion resistance of Mg and its alloys in clinical application, in this work, a series of strontium…
BACKGROUND: Transplantation of mesenchymal stem cells has created enormous opportunities as a potential treatment for various diseases including neurodegenerative diseases. Given current techniques, such as Hoechst labeling, have safety and leakage issues, our study focused, as a proof-of-concept, on a new dendrimer-b…
열중량 분석법(TGA)을 이용하여 소방용 합성수지 배관으로 사용되는 CPVC의 활성화 에너지를 측정하였다. 열중량 분석법을 이용한 활성화 에너지는 Kissinger method와 Flynn-Wall-Ozawa method를 이용하여 계산하였다. 활성화에너지를 계산한 결과 Kissinger method에 의해 128.07 kJ/mol, Flynn-Wall-Ozawa method에 의해 145.60 kJ/mol로 나타났다. Kissinger method와 Flynn-Wall-Ozawa method에 의해 계산된 활성화 에너지의 차이는 해석 방법이 다르다는 점을 감안했을…
The Paton Welding Journal, 2019, №02. International Scientific-Technical and Production Journal «The Paton Welding Journal» «The Paton Welding Journal» has been published monthly since 2000 in English, ISSN 0957-798X. «The Paton Welding Journal» is a cover-to-cover English translation of the «Avtomaticheskaya Svarka»…
Among the various methods used for glass edge sealing, this study uses microwaves to seal glass edges. Through basic experiments, the main process conditions for edge sealing of glass were derived, and the experimental plan and analysis were carried out using the Box-Behnken method of response-surface analysis based o…
Owing to the significant advances made in the field of power semiconductor devices, such as SiC and GaN, the switching frequency of power converters has been increased. Thus, the volume of passive components such as filter inductors and transformers can be reduced. However, the reduction in the heat-dissipation surfac…
Abstract Acrylonitrile-styrene-acrylic (ASA) terpolymer has a typical core-shell structure with poly(butyl acrylate) (PBA) as the soft core and styrene-acrylonitrile (SAN) copolymer as the hard shell. The impact behavior of poly(vinyl chloride) (PVC)/ASA binary blends with various ASA terpolymer contents was systemati…
Percolation theory can be used to study the flow-related properties of various porous systems. In particular, recently developed membranes from silica nanoparticles with surface grafted polymer brushes represent a quintessential hard-sphere soft-shell system for which fluid-flow behavior can be illuminated via a perco…
The organic–inorganic hybrid materials have attracted great attention due to their improved or unusual properties that open promising applications in different areas such as optics, electronics, energy, environment, biology, medicine and heterogeneous catalysis. Different types of silicodactyl platforms grafted on sil…
A simple, novel approach is proposed for the preparation of plasma-exfoliated graphene (PEGN) by reducing graphene oxide (GO) through a dielectric-barrier discharge (DBD) plasma treatment in a H₂ atmosphere. The surface chemistry, microstructures, and crystallinity of the prepared samples were characterized via X-ray…
Applications of cellulose nanofibril are highly dependent on its dimension (length and width). Quick and easy methods for measuring cellulose nanofibril dimensions are critical in process quality control. A nanoparticle size analyzer (Dynamic laser scattering) was applied for cellulose nanofibril characterization and…
The architecture of phase-change synapses that can have more intermediate states was studied by means of TCAD simulation. After thorough investigation on the cell geometry effects, it was found that the line-and-space type architecture yields more intermediate states but consumes more power than the confined architect…
Abstract Single crystals of Ba(Fe 1− x Ni x ) 2 As 2 have been produced for systematic magnetic measurements of the critical current density ( J c ) over a range of dopings from x = 0.025 to 0.066 and a range of temperatures from 2 K. Analysis of the field dependent critical current density, J c , shows strong evidenc…
Optical-grade yttrium aluminum garnet (YAG) ceramics co-doped with Yb3+ and Er3+ ions are successfully prepared via using high-temperature solid-state reaction method under vacuum condition. Cubic phase structure and full dense microstructure are determined by means of X-ray diffraction (XRD) and scanning electron mic…