Materials Literature
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Protein adsorption plays a crucial role in bioactive implant devices and drug delivery materials design. Ionic complementary peptides are novel nanobiomaterials with many biomedical applications. In this work, molecular dynamics simulations of the ionic complementary peptide EAK16-II on the hydrophobic HOPG surface we…
Mixtures of nonadsorbing polymer and colloidal particles exhibit a range of different morphologies depending on the particle and polymer concentrations and their relative size ratios. These can be very important for technological applications, where gelation can produce a weak solidlike structure that can help reduce…
In this Brief report we propose a direct method of effective-parameters restoration that is based on the wave propagation phenomenon. It is easy in implementation, has no unambiguity in retrieving effective properties and is applicable to thick metamaterial (MTM) slabs. The method is validated on the case studies of f…
Phenyleneethynylene-based and thienyleneethynylene-based π-conjugated polymers with imidazolium cationic units in the main chain and their model compounds were synthesized and characterized. The imidazolium-containing cationic polymers were transferred to an ionic liquid by the spontaneous anion-exchange from iodide t…
Abstract Two different series of polymer dispersed liquid crystal (PDLC) films were prepared for their future use as externally controlled electrolytes in direct methanol fuel cells (DMFC). The liquid crystals used in this work were commercial cholesteryl oleyl carbonate (COC) and n ‐(4‐methoxybencylidine)‐4‐butylanil…
Abstract This work reported the hydrophilicity, hemocompatibility, and cytotoxicity of novel polyurethane (PU) scaffolds for tissue engineering, especially the hydrolysis effect of a soft‐segmented component, a hydrolytically‐modified hydroxyl‐terminated poly(butadiene‐ co ‐acrylonitrile) ( h ‐HTBN), on these properti…
As the simplest stable boron hydride in its condensed phase, diborane exhibits an interesting structural chemistry with uniquely bridged hydrogen bonds. Here we report the first room-temperature infrared (IR) absorption spectra of solid diborane compressed to pressures as high as 50 GPa using a diamond anvil cell. At…
Abstract The basic problem of weak interaction between odd electrons in graphene is considered within the framework of broken spin‐symmetry single‐determinant approach. The modern implementations of the approach in the form of either unrestricted Hartree‐Fock scheme (UBS HF) or spin‐polarized DFT (UBS DFT) were discus…
Dimeric metalloporphyrin hosts with tweezer-like structures have been synthesized by reacting the cyanuric chloride scaffold, CC, with 5-(4-aminophenyl)-10,15,20-triphenylporphyrin, P, and 5-(4-aminophenyl)-10,15,20-trimesitylporphyrin, M, to yield the homoconjugates free bases PP and MM and the heterodyad PM. Metalat…
Abstract The influence of the flow history experienced during injection molding on the mechanical properties of amorphous polymers is investigated. It is demonstrated that flow‐induced molecular orientation only causes a small anisotropic effect on the yield stress, which can be regarded as insignificant with respect…
Mesoporous titania−silica (TiO 2 −SiO 2 ) composites have been directly synthesized through a hydrothermal method in weak acidic conditions by using TiCl 3 solution as a titanium source and triblock copolymer P123 (EO20PO70EO20) as a template with the assistance of zinc acetate. Characterizations by XRD, TEM, and N 2…
One consistent limitation for high-resolution imaging of small nanoparticles is the high background signal from the amorphous carbon support film. With interest growing for smaller and smaller nanostructures, state of the art electron microscopes are becoming necessary for rudimentary tasks, such as nanoparticle sizin…
Cerium (Ce) supported on palm-shell-activated carbon (PSAC) has been found to significantly increase its activity in simultaneous removal SO 2 and NO from simulated flue gas. In the present study, the role of Ce on SO 2 and NO removal was studied through reaction adsorption. The catalyst was characterized using BET, E…
Although the implications of calcium carbonate (CaCO(3)) precipitation by microorganisms in natural environments are quite relevant, the physiology and genetics of this phenomenon are poorly understood. We have chosen Bacillus subtilis 168 as our model to study which physiological aspects are associated with CaCO(3) (…
A systematic study, both experimentally and analytically, is conducted to evaluate the feasibility of using appropriate shock table tests to mimic the drop impact environment for components and systems adopted in portable electronics. Firstly, experiments are carried out to observe the dynamic characteristics of typic…
Ga-rich GaZnO thin films were prepared by metal-organic chemical vapor deposition. The optical bandgap of GaZnO films can be engineered from 3.3 to 4.9 eV by varying the Ga content. The film is amorphortized and the resistivity increases with an increase of Ga content. The Ga-rich GaZnO alloy with lower resistivity is…
The drainage under gravity of a vertical foam film formed on a wire frame has been investigated. Dual-wavelength optical interferometry was used so that unambiguous fringe order assignments could be made, enabling absolute film thicknesses to be calculated with confidence. Films were stabilized by nonionic polypropyle…
Spectroscopic studies demonstrate that the 5-coordinate O-nitrito complexes Fe(Por)(eta(1)-ONO) (Por--meso-tetraphenyl- or meso-tetra-p-tolyl-porphyrinato dianions) react with the thioethers (R(2)S) dimethylsulfide and tetrahydrothiophene to give the 6-coordinate N-nitrito complexes Fe(Por)(R(2)S)(NO(2)). These reacti…
We demonstrate ACCNT (pronounced as ldquoaccentrdquo), a solution to the metallic-nanotube problem that does not require any metallic-nanotube removal of any kind. ACCNT uses asymmetrically correlated carbon nanotubes to achieve metallic-nanotube tolerance, delivering high on-off ratios (104-106) while preserving the…
Epitaxial growth of graphene on Ru(0001) was investigated by photoemission electron microscopy (PEEM) and scanning tunneling microscopy (STM). By connecting the mesoscopic length scale of PEEM and the microscopic length scale of STM, we show that graphene overlayers with sizes ranging from nanometers to sub-millimeter…