Materials Literature
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Nanomedicine is an emerging field that applies concepts in nanotechnology to develop novel diagnostics and therapies. Physical and chemical properties of particles, including size, shape, modulus, surface charge and surface chemistry, play an important role in determining particle-cell interactions, cellular trafficki…
We present a Raman study of Ar(+)-bombarded graphene samples with increasing ion doses. This allows us to have a controlled, increasing, amount of defects. We find that the ratio between the D and G peak intensities, for a given defect density, strongly depends on the laser excitation energy. We quantify this effect a…
Aluminiumoxid im Fluss: Auf Informationen aus Synchrotron-Röntgenpulverbeugungs(PXRD)-Messungen in situ, die einen Reaktionsmechanismus ohne kristalline Intermediate nahelegen, baut die erste einstufige und schnelle Synthese von γ-Al2O3 im Großmaßstab auf. Das γ-Al2O3 wurde bei niedriger Temperatur in einem kontinuier…
En este articulo se presenta el estudio del comportamiento fisico-mecanico de la fraccion de PEBD/Al reciclado de empaques de Tetra Pak, de origen post consumo, reforzado con fibras de fique, en el cual se enfatiza en el reforzamiento del material con fibras cortas en disposicion bidimensional aleatoria. Para observar…
The inhibition effect of DNA bases, guanine (G), adenine (A), cytosine (C), or thymine (T), on the growth of Au nanoparticles (NPs) was clarified by UV–vis absorption spectra, resonance light scattering (RLS) spectra, transmission electron microscopy (TEM), differential pulse voltammetry (DPV), and theoretical calcula…
Abstract P2VN‐ b ‐PAA is a novel diblock copolymer which has potential as a self‐assembled nanoscale patterning material. Thin spin cast P2VN‐ b ‐PAA films rapidly reorganize to vertical lamellar with exposure to acetone vapor. P2VN‐ b ‐PAA lamellar morphology was aligned by electric field under acetone vapor at a sig…
Hard and transparent alumina (Al(2)O(3)) films with thicknesses in the range of 500 nm to 5 μm were successfully formed on polymethylmethacrylate (PMMA) and polystyrene (PS) surfaces. Our process is based on a lamination of anodized aluminum membranes (AAMs) to the polymer surfaces, followed by chemical etching. Becau…
Abstract A co‐extrusion technique was employed to fabricate a novel dual layer NiO/NiO‐YSZ hollow fiber (HF) precursor which was then co‐sintered at 1,400 °C and reduced at 700 °C to form, respectively, a meshed porous inner Ni current collector and outer Ni‐YSZ anode layers for SOFC applications. The inner thin and h…
This paper reports a multiple-scale hierarchically structured superhydrophobic surface that is composed of inclined-wall regular micro-pillar arrays covered entirely with an alumina nanowire forest (ANF) to improve the surface wettability. The multiple-scaled structures were fabricated stably using a simple batch proc…
We studied enhanced interfacial adhesion between an amorphous polymer (polystyrene, PS) and a semicrystalline polymer (a polyamide, Ny6). The fracture mechanism for this system was investigated to elicit a universal description on the fracture mechanism. The surface modification of PS to provide functional groups that…
In this study, a one-step approach for aqueous synthesis of highly luminescent semiconductors, CdTe quantum dots (QDs), using long-chain thiols-mercaptoundecanoic acid (MUA) as surface ligand, was developed in a microwave irradiation system. The synthetic conditions were systematically investigated. The as-prepared MU…
Electromagnetic compatibility (EMC), including the engineering of materials used for shielding,, is currently one of the most extensively developing field of applications of composite materials (Bula et al., 2006; Jaroszewski & Ziaja, 2010; Koprowska et al., 2004, 2008; Sarto et al. 2003, 2005; Wei et al., 2006; Ziaja…
Anodic oxidation of arylhydrazines in aqueous solution leads to formation of a chemisorbed monolayer on the electrode surface of both glassy carbon and gold. The grafting process occurs in a three-electron process, in which the arylhydrazine is oxidized to the actual grafting agent, that is, the corresponding aryl rad…
An ecofriendly solid catalytic system comprising undecaphosphotungstate and neutral alumina was found to be an efficient catalytic system for solvent-free liquid-phase aerobic epoxidation of alkenes under mild reaction conditions. The superiority of the present catalyst lies in achieving 85% conversion for cyclohexene…
Abstract We present a new result for the wavelength-selective characteristics of a 1D photonic microcavity based on porous silicon. These properties are studied in both experimentation and simulation. The 1D Fabry–Perot cavity is fabricated by the electrochemical etching of a low-resistivity silicon wafer with modulat…
A significant advance made in combinatorial approach research was that the emphasis shifted from simple mixing to intelligent screening, so as to improve the efficiency and accuracy of discovering new materials from a larger number of diverse compositions. In this study, the long-lasting luminescence of SrAl(2)O(4), w…
Reliable representation of magnetization curves at higher magnetic fields is needed to accurately model and design devices in FEM software. Standard closed circuit magnetic induction measurements for ferromagnetic materials in such devices are usually limited to around 2 T for most Epstein frame equipment, above which…
We report on the band edge alignment in zinc-blended-type CdTe/CdS core-shell quantum dots, using femtosecond spectroscopy. Time-resolved transient absorption spectroscopy directly shows that the system gradually developed from quasi-type-I to type-II as the shell thickness increased. Following photoexcitation of CdS,…
On the basis of ab initio simulations, we identified possible microscopic pathways for the Li 2 NH + H 2 → LiNH 2 + LiH rehydrogenation reaction of Li imide. Dissociative chemisorption of H 2 at the Li 2 NH(001) surface is an activated process with an energy barrier of 0.5 eV. The heterolytic splitting of H 2 leads to…
Oxidized polyvinyl alcohol (PVA) hydrolase (OPH) is a key enzyme in the degradation of PVA, suggesting that OPH has a great potential for application in textile desizing processes. In this study, the OPH gene from Sphingopyxis sp. 113P3 was modified, by artificial synthesis, for overexpression in Escherichia coli. The…