Materials Literature
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The structure of aromatic residues in spider silk has remained relatively uncharacterized. This is primarily due to the relatively low abundance of aromatic residues in dragline spider silk. NMR characterization has been further hindered by the inability to (13)C-isotopically enrich these amino acids in the silk effec…
The dissociation paths and thermochemistry of nitric oxide (NO) on flat, close-packed Rh(111) and on stepped Rh(211) surfaces have been investigated. Self-consistent, periodic, density functional theory (DFT-GGA) calculations, using both PW91 and RPBE exchange-correlation functionals, have been employed to determine b…
The diffusion of water in a phase-separated biodegradable poly(ester urethane) shape-memory polymer with poly(epsilon-caprolactone) (PCL) as the soft segment was investigated using time-resolved FTIR-ATR. On the basis of the band fitting and water ordering in drawn films, the broad water band in the 3800-2800 cm(-1) r…
We calculate the parameters for Hubbard models of $\ensuremath{\kappa}\text{\ensuremath{-}}{(\text{BEDT-TTF})}_{2}X$ and $\ensuremath{\beta}\text{\ensuremath{-}}{(\text{BEDT-TTF})}_{2}X$. We use density-functional theory (DFT) to calculate the interactions between holes in dimers of the organic molecule bis(ethylenedi…
This work explores the synthesis of walnut-like CdS micro-particles (MPs)/single-walled carbon nanotube (SWCNT) hybrids via one-step hydrothermal methods and their optical and optoelectronic properties. The mechanism of stable attachment to obtain a CdS MPs composite material is revealed. To overcome the specific prob…
We study the thermodynamic and structural properties of a simple, one-patch fluid model using the reference hypernetted-chain (RHNC) integral equation and specialized Monte Carlo simulations. In this model, the interacting particles are hard spheres, each of which carries a single identical, arbitrarily oriented and a…
A novel fluorescent nanosensor for Sb(3+) determination was reported based on thioglycolic acid (TGA)-capped CdTe quantum dot (QD) nanoparticles. It was the first antimony ion sensor using QD nanoparticles in a receptor-fluorophore system. The water-soluable TGA-capped CdTe QDs were prepared through a hydrothermal rou…
Metallosalphen complexes with peripheral glucose and galactose substituents were synthesized and characterized. Their self-assembled supramolecular structures were then studied with transmission electron microscopy (TEM), scanning electron microscopy (SEM) and atomic force microscopy (AFM). It was found that all of th…
The use of optical metrology techniques in process control for microelectronic manufacturing has become widespread. These techniques are fast and non-destructive, allowing a higher sampling rate than non-optical methods like scanning electron or atomic force microscopy. One drawback of most optical metrology tools is…
We investigated the effect of flow in combination with molecular architecture on crystallization for linear and branched polypropylenes by means of dynamical mechanical spectroscopy. Compared to the linear polymer, the branched one exhibits much slower relaxation after deformation, causing higher levels of molecular o…
Molecular dynamics simulations are applied to investigate the thermal gradient induced actuation in double-walled carbon nanotubes, where a temperature difference can actuate the relative motion of double-walled carbon nanotubes. The thermal driving force calculated through a stationary scheme is on the order of pico…
Epitaxial (LaBa)Co 2 O 5+δ thin films were grown on (001) LaAlO 3 single-crystal substrates using pulsed laser deposition. Microstructure characterizations from X-ray diffraction and electron microscopy indicate that the films are highly c -axis oriented with cube-on-cube epitaxy. Transport property measurements indic…
Nanoparticle arrays created by nanosphere lithography are widely used in sensing applications since their localized surface plasmon resonances are extremely sensitive to changes in the local dielectric environment. A major drawback for any biologically oriented sensing application of conventionally produced particle a…
We report on a combined swelling−heteroaggregation (CSH) method for preparation of highly scattering, metal nanoparticle(NP)-coated polystyrene (PS) latex beads. This methodology is a facile and relatively benign single-step process for preparation of metal-coated dielectrics for applications in biomedical imaging, se…
Two new neutral copper-azido polymers [Cu(3)(N(3))(6)(tmen)(2)](n) (1) and [Cu(6)(N(3))(12)(deen)(2)](n) (2) [tmen = N,N,N',N'-tetramethylethylenediamine and deen = N,N'-diethylethylenediamine] have been synthesized by using lower molar equivalents of the chelating diamine ligands with Cu(NO(3))(2).3H(2)O and an exces…
The influence of the co-monomer content and processing conditions on the crystallization kinetics of propylene/ethylene (P/E) random copolymers is studied using DSC and rheometry. The presence of ethylene lowers the melting and crystallization temperature compared to pure polypropylene, and the quiescent crystallizati…
Ligand-stabilized platinum nanoparticles (Pt NPs) were self-assembled with poly(isoprene-block-dimethylaminoethyl methacrylate) (PI-b-PDMAEMA) block copolymers to generate organic-inorganic hybrid materials. High loadings of NPs in hybrids were achieved through usage of N,N-di-(2-(allyloxy)ethyl)-N-3-mercaptopropyl-N-…
Here, we describe the fabrication of multispectrally encoded nanoprobes, perfluorocarbon (PFC)/quantum dots (QDs) nanocomposite emulsions, which could provide both multispectral MR and multicolor optical imaging modalities. Our strategy exploited the combination of the multispectral MR properties of four different PFC…
We demonstrate controllable structural color based on periodic nanopatterned 2D lattices in pure protein films of silk fibroin. We show here periodic lattices in silk fibroin films with feature sizes of hundreds of nanometers that exhibit different colors as a function of varying lattice spacing. Further, when varying…
We present a new method for improving the magnetic loss properties of a certain class of isotropic vector hysteresis models based on the Mayergoyz model. We show that the Mayergoyz model possesses the necessary features for representing vector hysteresis but falls short of satisfying the loss property under rotating m…