Materials Literature
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An attempt was made to evaluate the non-linear, multi-variable dependency between the main (tangential) force, F-C, and machining parameters and properties of pedunculate oak (Quercus robur) during straight edge, peripheral milling. The tangential force, F-C, was found to be influenced by the feed rate per tooth, f(Z)…
The kinetics of the thermal decomposition of chalcopyrite concentrate was investigated by means of thermal analysis techniques, Thermogravimetry/Derivative thermogravimetry (TG/DTG) under ambient air conditions in the temperature range of 0–900°C with heating rates of 2, 5, 10, 15, and 20°C min−1. TG and DTG measureme…
In this article, polycaprolactone (PCL) nanofibres were processed by electrospinning using a 3:1 ratio of tetrahydrofuran to methanol as solvent. The solvent choice was motivated by the possibility of greener alternatives to the halogenated compounds most often used for electrospinning. The morphologies and fiber diam…
We provide the first experimental demonstration of the handedness dependent electromagnetically induced transparency (EIT) in chiral metamaterials during the interaction with circularly polarized waves. The observed chiral-sensitive EIT phenomena arise from the coherent excitation of a non-radiative mode in the compon…
This paper provides the design of 1 MVA three-phase oil-immersed distribution transformers considering short-circuit testing (SCT) and its impact on the windings. To maintain the transformer function after the SCT, only an impedance variation within 5% is allowed. Therefore, in conjunction with the particle swarm opti…
Typically porphyrin N-H units are not involved in intermolecular hydrogen bonds as they are ‘shielded’ by the macrocycle system. However, two possibilities exist to utilize the pyrrole nitrogen atoms in such bonds: a) Porpho(di)methenes and phlorins (calixphyrin-type systems) contain sp3-hybridized meso positions and…
The range of polyphosphazene-based elastomers has been expanded through the use of phenoxy or oligo- p -phenyleneoxy minor cosubstituent side groups with majority 2,2,2-trifluoroethoxy side groups. Specifically, polymers with both trifluoroethoxy and low ratios of phenoxy, p -phenylphenoxy, p -diphenylphenoxy, or p -t…
Archaeological silk provides abundant information for studying ancient technologies and cultures. However, due to the spontaneous degradation and the damages from burial conditions, most ancient silk fibers which suffered the damages for thousands of years were turned into invisible molecular residues. For the obtaine…
Abstract In our recent studies, it was demonstrated that the IONCELL-P process selectively dissolves hemicelluloses from bleached birch kraft pulp in a mixture of 1-ethyl-3-methylimidazolium acetate ([emim][OAc]) and water as a solvent system. The IONCELL-P method refines paper-grade pulp to dissolving pulp with <5% h…
Molecular dynamics simulations are performed to compute thermomechanical properties of cured epoxy resins reinforced with pristine and covalently functionalized carbon nanotubes. A DGEBA-DDS epoxy network was built using the 'dendrimer' growth approach where 75% of available epoxy sites were cross-linked. The epoxy mo…
Self-assembly of pyrene butyric acid (PBA) and 2,4,7-trinitro-9H-fluoren-9-one (TNF) directed by a pyridine-linked cholesterol unit resulted in the formation of a conducting material (1.9472×10(-4) S Cm(-1) ) due to the formation of 1 D nanofibers. X-ray diffraction, IR, and atomic force microscopic (AFM) techniques w…
A new technology for the production of transparent material using a "crystalline" polymer is proposed in the present study. Further, transparent and flexible crystalline polymer nanohybrid film containing well-dispersed nanodiamond filler was fabricated. Partially fluorinated crystalline polymer with switchboard-type…
OBJECTIVE: Despite successful translation of bioresorbable vascular grafts for the repair of congenital heart disease, stenosis remains the primary cause of graft failure. In this study, we investigated the efficacy of long-term treatment with the antiplatelet drugs, aspirin and cilostazol, in preventing stenosis and…
Orientations of single crystals are usually determined by diffraction experiments. Indexing of a diffraction pattern from one crystal leads to the determination of its `orientation matrix', which defines the orientation of its crystallographic axes relative to a set of reference axes associated with the diffractometer…
We applied ab initio computational methods based on density functional theory to study the properties of graphene and single-walled carbon nanotubes functionalized with benzyne. The calculations were carried out using the SIESTA electronic structure code combined with the generalized gradient approximation for the exc…
In this work, we provide new insight on the influence of the precursor (CH4 vs. C2H2) on the mechanical properties of a‐C:H coatings synthesized in a hybrid PECVD/PVD process. For a given set of plasma parameters, the films synthesized in CH4/Ar gas mixture are found harder than the ones prepared in C2H2/Ar atmosphere…
The thermodynamic and kinetic aspects associated with the interaction of small gold clusters (Au n, where n = 3–6) with nucleobases are assessed using a density functional reactivity theory based comprehensive decomposition analysis of stabilization energy scheme. It is observed that the trend of interaction between A…
ABSTRACT The structure and properties of melt mixed high‐density polyethylene/multi‐walled carbon nanotube (HDPE/MWCNT) composites processed by compression molding and blown film extrusion were investigated to assess the influence of processing route on properties. The addition of MWCNTs leads to a more elastic respon…
To create the whole-rainbow-fluorophores (WRF) having the small Δλem (the difference of λem between a given fluorophore and nearest neighboring fluorophore having the same core skeleton) values (<20 nm) in full visible region (λem: 400-650 nm), the high log ε (>4.5), and the high Φf (>0.6), we investigated molecular d…
Two-dimensional (2D) atomic crystals, such as graphene and transition metal dichalcogenides et al. have drawn extraordinary attention recently. For these 2D materials, atoms within their monolayer are covalently bonded. An interesting question arises: Can molecules form a 2D monolayer crystal via van der Waals interac…