Materials Literature
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A new series of benzothiazole-phenyl esters intersected by azo N˭N has been isolated and their structures were characterized. These compounds exhibit enantiotropic nematic phase. The transition temperatures and the enthalpy values associated with these derivatives were found to be dictated by the variation of the leng…
The first-principles density functional theory together with the quasi-harmonic Debye model is applied to investigate the thermodynamic properties and the phase transition between β-Ti 3 O 5 and λ-Ti 3 O 5 . It is found that the phase transition from β to λ occurs only when the temperature is higher than 1420 K, and a…
A novel series of linear hydrogen-bonded liquid crystals (HBLCs), viz., Py14BA:nFAs synthesized from nonmesogenic moieties, such as an N(p-n-pyridene carboxaldehyde), p-n-tetradecyl aniline, and the long-chain-bearing aliphatic acids (nFAs for n = 10, 12, 14, 16, and 18), are reported. The chemical stability, purity o…
Abstract The density functional theory at the B3LYP/6‐311G++(d,p) basis set level calculations were performed on two thiophene derivatives used as corrosion inhibitors, namely 2‐methylthiophene and 2‐(aminomethyl)thiophene, to investigate the correlation between its molecular structure and the corresponding inhibition…
We report for the first time the synthesis of niobium dioxide nanowires on a sapphire substrate by chemical vapor transport method. We identified single crystalline nature of as-synthesized nanowires by scanning electron microscopy and transmission electron microscopy. Niobium dioxide nanowires with their large surfac…
Using molecular dynamics simulation method, we studied the carbon nanotube (CNT) non-covalently interacting with a polymer. As the polymer coiled around the CNT, the diameter of CNT deformed by more than 40% of its original value within 50 ps. By considering three different polymers, we conclude that the interaction b…
Porous hydrogel blends composed of various weight ratios of hyaluronic acid (HA) and gelatin (Gel) were fabricated by a freeze-drying method. The 1-ethyl-3(3-dimethylaminopropyl) carbodiimide (EDC) was used as a crosslinker to improve their biostability. The effect of the component and crosslinker content on the morph…
Carbon fibers were coated with silicon carbide ( S i C ) by partially reacting with silicon ( S i) powders in a N a C l‐based salt for 4 h at 1200°C–1250°C in Ar , and characterized by using X ‐ray diffraction ( XRD ), scanning electron microscopy ( SEM ), atomic force microscopy ( AFM ), and energy dispersive X ‐ray…
In this paper, the finite strain plastic deformation of AM30 magnesium alloy has been simulated using the crystal plasticity finite element method. The simulations have been carried out using a rate-dependent elastic–viscoplastic crystal plasticity constitutive model implemented in a user defined material subroutine (…
We demonstrate that the straightforward application of the nudged elastic band (NEB) method does not determine the correct Peierls barrier of 1/2〈1 1 1〉 screw dislocations in bcc metals. Although this method guarantees that the states (images) of the system are distributed uniformly along the minimum energy path, it d…
Digital holographic microscopy (DHM) has been successfully applied for the first time to characterize the radiative out-of-plane emission properties of a superdirective device. Complementarily to near-field microscopy, DHM allows us to reconstruct the beam in the far-field region. The angular dispersion of the light b…
Abstract Ti–22Nb– x Zr and Ti–22Nb– x Mo ( x = 0, 2, 4, 6, in atom percent) were prepared by an arc melting method. The alloys were solution‐treated at 1073 K for 1.8 ks followed by quenching them into ice water, and the electrochemical corrosion behavior in a 0.9% NaCl solution at 25 °C and neutral pH range of the so…
Abstract In the present study, a nanoceramic hexafluorozirconic acid was used as an eco‐friendly conversion coating, which is free of the conventional phosphate salts. The effect of practical parameters on morphology and corrosion resistance of the coating was studied. Anti‐corrosion behavior of the nanoceramic‐based…
: Currently, thousands of commercially available products contain engineered nanoparticles (ENPs). Because numerous nanoparticles (NPs) are being used in products that will be in contact with water or directly used in water treatment processes, these materials will undoubtedly reside, at least temporarily, in bodies o…
The relation between macroscopic charge transport properties and microscopic carrier distribution is one of the central issues in the physics and future applications of graphene devices (GDs). We find strong conductance enhancement at the edges of GDs using scanning gate microscopy. This result is explained by our the…
Upon supramolecular self-assembly, novel conductive hybrid nanofibers were successfully fabricated using three amphiphilic salts, azopyridinium, aniline hydrochloride, and alkylbenzenesulfate-based anionic surfactants. The interactions like π-π stacking and ionic bonding among the different compounds played important…
Sodium 2,2’-methylene-bis (4,6-di-tert-butylphenyl) phosphate (commercial name: Irgastab NA-11) and N,N’-dicyclohexylnaphthalene-2,6-dicarboxamide (commercial name: NU-100) are highly effective nucleating agents for α-isotactic polypropylene (iPP) and β-isotactic polypropylene (iPP) respectively. Effects of a total co…
Carbon nanotubes as one-dimensional nanostructures are ideal model systems to study relaxation channels of excited charged carriers. The understanding of the ultrafast scattering processes is the key for exploiting the huge application potential that nanotubes offer, e.g., for light-emitting and detecting nanoscale el…
SANS measurements in THF- d 6 were carried out at the D11 instrument at ILL, Grenoble with two aliphatic aromatic hyper-branched (hb) samples with nearly the same degree of polymerization (DP ≈ 90), containing hydroxyl (OH) and silyl-ether (SY) terminal groups. The choice of a large region of momentum transfer q permi…
Play the field: A field-effect transistor using reduced graphene oxides was prepared through the reduction of graphene oxides connected between two electrodes. The use of pyrene with an electron-withdrawing group and an electron-donating group showed the p- and n-doping effects, respectively, while the pyrene backbone…