Materials Literature
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Recent research results show that homogeneity and microstructure are very important parameters for the development of low cost materials with better performance for fuel cell applications. This research effort has been contributed in the development of low temperature solid oxide fuel cell (LTSOFC) material and techno…
Two novel unusual compounds [Co(NCO) 2 (bpa)] ( 1 ) and [Cu(N 3 ) 2 (bpa)] ( 2 ) with cyanate and azide pseudohalides are shown in this work. These compounds have been characterized by X-ray diffraction measurements, Fourier transform-infrared (FT-IR) and UV−visible spectroscopies, thermogravimetric studies, electron…
Abstract An original process based on cold plasma assisted polymerization of tetramethyldisiloxane (TMDSO) in the presence of O 2 was developed to cover substrates showing various shapes (plate and foam). In the frame of catalytic application, this coating has to act as a bonding layer for the deposition of active pha…
Fluorinated in situ polymerization of monomeric reactants (PMR) polyimide resins with improved melt processability and impact toughness were prepared from the diethyl ester of 3,3 ' ,4,4 ' -benzophenonetetracarboxylic acid and the aromatic diamine 4,4 ' -bis(4-amino-2-trifluoromethylphenoxy)biphenyl (6FBAB) with the m…
A study is conducted to investigate the relative advantages of different driving devices for phase-change memory cells using 3-D numerical device simulation. Among various possible choices, p-n diodes and vertical gate-all-around (GAA) metal-oxide-semiconductor field-effect transistors (MOSFETs) are studied in detail…
We observed the structure of collagen fibrils in rat tail tendons after treatment with NKISK and cathepsin G. NKISK is a pentapeptide that has been previously shown to bind fibronectin, while cathepsin G is a serine protease that cleaves fibronectin but not type I collagen. In tendons treated with NKISK, fibrils were…
Abstract In this article, we report a novel method to synthesize polyaniline (PANI) nanocomposite. Chitin and PANI are dissolved in a common solvent, N , N ‐dimethyl acetamide, with 5% LiCl, and the solution is irradiated with 8 MeV electron beam for different doses, nanoparticles of PANI in chitin is obtained. The ch…
Different positive polyelectrolytes having the same charge density, molecular weight, and molecular weight distribution were employed for polyelectrolyte multilayer (PEMU) assembly. The polycations differed only in the heteroatom on which the positive charge resided: poly(vinyl benzyl trimethyl ammonium) chloride, pol…
Using density-functional theory (DFT) methods, we investigate structural, electronic, and transport properties of step-kinked single-walled carbon nanotubes (SWCNT). To devise a sensible model for the joint section of the kinked nanotube, we examine relative stability of two (6,0) carbon-nanotube-based C 672 isomers,…
Flexible, strong scaffolds were created by crosslinking PCL with 1,6-hexamethylenediisocyanate, using paraffin beads as a porogen. Particulate leaching generated homogeneous scaffolds with interconnected spherical pores of 5-200 µm. Subcutaneous implantation in rats for 3 months resulted in minimal scaffold resorption…
Here we have developed a convenient method to fabricate wettability controllable surfaces that can be applied to various nanostructured surfaces with complex shapes for different industrial needs. Diamond-like carbon (DLC) films were synthesized on titanium substrate with a nanowire structured surface using plasma imm…
First-principles calculations and semi-empirical equations are employed to determine the self-diffusion mobility of fcc Mg. All factors entering the vacancy-mediated self-diffusion coefficient, which include the equilibrium lattice parameter, the enthalpy of vacancy formation and atom migration, and the vibrational en…
Abstract Grafting poly(methyl methacrylate) or PMMA from natural rubber (NR) using ATRP process, NR has to be transformed into bromoalkyl‐functionalized NR (NRBr) acting as ATRP macroinitiator. The NRBr was prepared by two‐step chemical modification i.e., epoxidation and epoxide ring opening reaction using a nucleophi…
We report the preparation and physical properties of reduced anatase TiO 2-δ thin films obtained via a low-temperature (low- T ) reduction using CaH 2 . The oxygen amounts were controlled in a wider range than ever reported. Some highly reduced anatase films showed resistivities as low as 10 -3 Ω cm at room temperatur…
Abstract To obtain highly transparent isotactic polypropylene (PP) sheet by an industrial process, the influences of the isotacticity and metallocene linear low‐density polyethylene (L‐LDPE) as crystallization control material were analyzed. The sheet samples were extruded by using a direct single‐belt process. Even i…
An anionic gelator, D-C12ValC10COONa, derived from D-valine can cause physical gels in water and organic solvents. Helical 4,4(')-biphenylene-silica nanotubes and nanoribbons were prepared using it with 3-aminopropyltrimethoxysilane as a co-structure-directing agent and 4,4(')-bis(triethoxysilyl)-1,1(')-biphenyl (BTES…
Silver (Ag) films of varying thickness were simultaneously deposited using physical vapor deposition (PVD) onto six infrared (IR) substrates (BaF(2), CaF(2), Ge, AMTIR, KRS-5, and ZnSe) in order to correlate the morphology of the deposited film with optimal SEIRA response and spectral band symmetry and quality. Signif…
First-principle calculations show that free-electron carriers are induced in few-layer hexagonal boron nitride ($h$-BN) by applying an external electric field. The electric field substantially shifts the particular states downward, and they finally cross the Fermi level under an electric field of a few volts per nanom…
After a flood, large amounts of water and mud can remain trapped in substation equipment, making the repair of such equipment a sizable task and lengthening the restoration task. Certain preventive measures and preparatory steps can help diminish such impacts and reduce restoration times. Extreme weather impacts, such…
This study reports a tunable metallo-supramolecular assembly strategy to construct microscaled objects with different morphologies. Three well-defined discrete microstructures—microspheres, microtubes, and microrods—have been fabricated through metal−organic coordination between the same organic unit and different tra…