Materials Literature
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In this work we investigate the collision-induced (CI) dipole moment $\ensuremath{\Delta}{\ensuremath{\mu}}_{i}(R)$, the CI polarizability tensor $\ensuremath{\Delta}{\ensuremath{\alpha}}_{ik}(R)$, and the first dipole-hyperpolarizability tensor $\ensuremath{\Delta}{\ensuremath{\beta}}_{ijk}(R)$ of the ${\text{H}}_{2}…
Recently, we showed large-scale fabrication of field-effect transistors from horizontal ZnO nanowires (NWs) on a -plane sapphire. Here, in examining the cross sections of such nanodevices, we use high-resolution transmission electron microscopy (HRTEM) and large-angle, convergent-beam electron diffraction (LACBED). We…
We have performed continuum self-consistent field (SCF) calculations to study the solvent response of diblock copolymer A-B brushes, where all copolymer chains are grafted onto a flat and impenetrable substrate and immersed in a solvent. In order to avoid the numerical problem associated with the delta-function initia…
The robust magnetic state of recently synthesized hybrid carbon nanostructures, i.e., nanobuds, is predicted through comprehensive spin-polarized density-functional calculations. The effects of chirality, curvature, and topology on the magnetism of nanobuds are scrutinized by detailed electronic structure analysis. Th…
Typically, the adhesion between cellulose surfaces under aqueous conditions is very poor. Often, adsorbed polymers such as polyvinylamine (PVAm) are used to increase the wet strength; however, this provides only a minimal increase in the adhesion energy. Here, the adhesion between cellulose surfaces with adsorbed laye…
The 1:1 $B$-site cation order in $\text{Pb}({\text{Mg}}_{1/3}{\text{Nb}}_{2/3}){\text{O}}_{3}$ relaxor ferroelectric ceramics was significantly enhanced by doping of minor amounts of ${\text{La}}^{3+}$, ${\text{Sc}}^{3+}$, or ${\text{W}}^{6+}$ (less than $3\text{ }\text{at}\text{.}\text{ }%$) combined with a slow cool…
Abstract Dynamically cured 60/40 NR/HDPE blends with various amounts of phenolic curative were prepared in an internal mixer at 160°C. A simple blend (i.e., the blend without curative) was also prepared using the same materials and blend proportion for comparison purposes. Mechanical, dynamic, and morphological proper…
We present, design and analyze a novel planar Left-Handed (LH) metamaterial at microwave frequencies. This metamaterial is composed of only metallic cut wires and is used under normal-to-plane incidence. Using Finite Element Method (FEM) based simulations and microwave experiments, we have investigated the material pr…
Abstract Polyaniline in emeraldine form was synthesized in the presence of multiwalled carbon nanotubes (CNTs), and the electrochemical capacitance performance of thus formed composite as electrode material has been studied. The polyaniline/carbon nanotubes (Pani/CNT) composite is found to result in a higher specific…
The thermal conductivity of the crystalline delta phase of syndiotactic polystyrene has been investigated by reverse nonequilibrium molecular dynamics simulations. The results are in the expected range. An anisotropy is found for the thermal conductivity, with the component in chain direction being 2.5-3 larger than p…
Abstract The degradation of polyethylene terephthalate (PET) waste by making use of hydrazine monohydrate was investigated at ambient temperature and pressure. The aminolysed end products obtained were characterized with chemical tests and spectroscopic techniques namely IR, UV‐visible spectroscopy and NMR, and the di…
We present structure-tunable bidirectional inorganic-organic hybrid nanowires templated by soft multicompartment cylinders, possessing perfectly parallel compartments. The poly(2-vinylpyridine) compartments are used to bind nanoparticles via supramolecular coordination. The resulting hybrid nanowires are tunable in te…
Silica nanotubes (SNTs) have been demonstrated here as a versatile host for controlled drug delivery and biosensing. The sol−gel template synthesized SNTs have a slow rate of drug release. Application of an external stimulus in the form of ultrasound to or chemical functionalization of synthesized SNT results in highe…
Simple blends of the poly(norbornenyldecaborane) (PND) boron-carbide preceramic polymer with either of the commercial poly(methylcarbosilane) (PMCS) or allylhydridopolycarbosilane (AHPCS) silicon-carbide preceramic polymers have been found to provide excellent processable precursors to boron-carbide/silicon-carbide ce…
This purpose of this investigation is to develop a new method for obtaining pore-size distribution (PSD) and other pore parameters from inner structure images. This method can be summarized into four key procedures to realize its functionality. A MATLAB program was composed to make the method applicable for image anal…
This paper describes the use of solvothermally moderated metal azide decomposition as a route to nanocrystalline mid to late transition metal nitrides. This method utilizes exothermic solid-state metathesis reaction precursor pairs, namely, metal halides (NiBr(2), FeCl(3), MnCl(2)) and sodium azide, but conducts the m…
Abstract Four different structure polyimide thin films based on 1,4‐phenylene diamine (PDA) and 4,4′‐oxydianiline (ODA) were synthesized by using two different dianhydrides, pyromellitic dianhydride (PMDA) and 3,3′,4,4′‐biphenyltetracarboxylic dianhydride (BPDA), and their residual stress behavior and mechanical prope…
Two cDNAs similar to aquaporins (AQPs) from other insect species were identified and characterized from the silkworm larva, Bombyx mori. The first cDNA (AQP-Bom1) cloned from the anterior silk gland encodes a 25 900 Da protein similar to insect AQPs isolated from several liquid-feeding insects. The second cDNA (AQP-Bo…
Abstract Rodlike poly( L ‐lactide) (PLLA) samples coated with poly(ethylene‐ co ‐vinyl alcohol) (EVOH) were made. Fibers were produced from these rodlike samples by using a melt electrospinning system equipped with a laser irradiating device, and the effects of EVOH content and the processing parameters of the melt el…
We show that the ground state of zigzag bilayer graphene nanoribbons is nonmagnetic. It also possesses a finite gap, which has a nonmonotonic dependence with the width as a consequence of the competition between bulk and strongly attractive edge interactions. All results were obtained using ab initio total-energy dens…