Materials Literature
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The direct infusion of macromolecules into defect sites generally does not impart adequate physiological responses. Without the protection of delivery systems, inductive molecules may likely redistribute away from their desired locale and are vulnerable to degradation. In order to achieve efficacy, large doses supplie…
Abstract The analytical potential of attenuated total reflection-Fourier transform infrared (ATR-FTIR) spectroscopy has been tested on the following wood-plastic composites (WPCs): high and low density polyethylene (HDPE and LDPE), polypropylene (PP), polystyrene (PS), and a recycled plastic (rHDPE). The data set of A…
Well-designed reactive precursors and templates allow for careful control of solid-state reactions at the nanoscale level, thus enabling the fabrication of materials with specific microstructures and properties. In this study, Fe 2 O 3 @BaTiO 3 core−shell particles have been used as precursors for the in situ fabricat…
A pressure induced semiconductor-semimetal phase transition on tungsten diselenide has been studied using in situ electrical resistivity measurement and first-principles calculation under high pressure. The experimental results indicate that the phase transition takes place at 38.1 GPa. The first-principles calculatio…
Boron-nitride nanotubes (BNNTs) are being increasingly used due to their superior biocompatibility. We develop sensor equations for using the BNNTs as possible mass sensors for nanoscale biological objects. Two approaches based on static and dynamic deflection shapes have been investigated. Two types of sensor configu…
Abstract Homogenous dispersion and strong interfacial bonding are prerequisites for taking full advantage of the mechanical properties of nanotubes in a composite. In order to simultaneously achieve both conditions, a highly efficient and mechanically non‐destructive functionalization of nanotubes is developed. With f…
Hybrid nanofibers with different concentrations of functionalized carbon nanotubes (CNTs) in polyacrylonitrile (PAN) were fabricated using the electrospinning technique and subsequently carbonized. Acrylonitrile-modified CNTs were dispersed in the PAN before electrospinning. The surface morphologies and structures of…
Over the past decade, transport measurements on individual single-wall nanotubes have played a prominent role in developing our understanding of this novel carbon conductor. These measurements have identified both metallic and semiconducting nanotubes, determined their dominant electronic scattering mechanisms, and el…
Two novel copper(II) complexes with tert-butyl 2-pyridyl nitroxide (2pyNO(*)), [Cu(2+)(2pyNO(-))(2pyNO(*))](2)(BF(4)(-))(2) (1 x BF(4)) and [Cu(2+)(2pyNO(-))(2pyNO(*))](2)(ClO(4)(-))(2) (1 x ClO(4)), were prepared and structurally characterized. They contained mixed-valent ligands from 2pyNO, whose oxygen atoms were l…
Twist and sort out! Chiral separation of PdII, NiII, and PtII complexes of [28]hexaphyrin(1.1.1.1.1.1) was achieved by HPLC on a chiral stationary phase (see inset for CD trace). The absolute configuration for the PdII complex was determined by X-ray crystallography. Asymmetric metalation of hexaphyrin, achieved with…
A centrifugal method has been modified and applied to the assessment of water retention value (WRV) in cellulosic materials. Microcrystalline cellulose (MCC), small particles/fibrils isolated from MCC using high-pressure homogenizer, and pulp fibers saturated in water were centrifuged at different speeds and times wit…
Abstract The formation of Fe 3 O 4 nanoparticles by hydrothermal process has been studied. X‐ray Diffraction measurements were carried out to distinguish between the phases formed during the synthesis. Using the synthesized Fe 3 O 4 nanoparticles, poly(vinyledene fluoride)‐Fe 3 O 4 composite films were prepared by spi…
Uniform, monodispersed, and size-controllable YVO 4:Eu 3+ nano- and microspheres ranging of 20−1200 nm in diameter were successfully synthesized under the solvothermal condition with N, N -dimethylformamide as the solvent, poly(vinyl pyrrolidone) (PVP) and cetyltrimethyl ammonium bromide (CTAB) as surfactants, meanwhi…
The 518 protein kinases encoded in the human genome are exquisitely regulated and their aberrant function(s) are often associated with human disease. Thus, in order to advance therapeutics and to probe signal transduction cascades, there is considerable interest in the development of inhibitors that can selectively ta…
We review recent progress in developing statistical mechanical theories for the slow activated segmental dynamics and mechanical response of deeply supercooled polymer melts and glasses. The focus is polymer-based predictive approaches and uniquely macromolecular aspects. We summarize the central concepts that underli…
X-ray absorption spectra at the Co L(2,3)-edges were analyzed by means of ligand field multiplet calculations in different states of three photomagnetic CoFe Prussian blue analogues of chemical formula Cs(2)Co(4)[Fe(CN)(6)](3.3) x 11 H(2)O, Rb(2)Co(4)[Fe(CN)(6)](3.3) x 11 H(2)O and Na(2)Co(4)[Fe(CN)(6)](3.3) x 11 H(2)…
A new class of materials for H 2 storage is proposed in this work. They can be synthesized by substitution of the OH groups of oxidized graphitic materials with alkoxide OLi groups. This strategy increases the interaction of H 2 with the material to 3.7 kcal/mol without affecting its structural stability. A new model…
To investigate the relationship between the electromechanical response, ${d}_{33}$, of doped ZnO and the dopant ionic size, the chemical state and ionic size of Fe in Fe-ZnO films were modulated through doping with various Fe concentrations and postannealing. We found that an enhanced ${d}_{33}$ of more than 110 pC/N…
Abstract Nature has inspired the design of improved synthetic materials that achieve superior and more efficient mechanical performance. Here microstructures inspired by the inner nacreous layer of seashells are designed and their mechanical properties including stiffness, strength, and energy dissipation are computed…
Controllable self-assembly of uniform star-shaped PbS nanocrystals with six symmetric 100-oriented horns into highly ordered structures including close-packed arrays and patterned arrays was realized by evaporation-induced assembly routes. First, large-area three-dimensional (3D) and two-dimensional (2D) hexagonal clo…