Materials Literature
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ADP-dependent glucokinases represent a unique family of kinases that belong to the ribokinase superfamily, being present mainly in hyperthermophilic archaea. For these enzymes there is no agreement about the magnitude of the structural transitions associated with ligand binding and whether they are meaningful to the f…
Carbon fibers were synthesized using a low-cost, economical method. Fresh rubber wood fibers (Hevea brasiliensis) were burned using a furnace in an inert condition at 350 to 450 o C for 2-4 hours, and after that the fibers were ground at 18000 rpm for 20 to 40 seconds. The effect of carbon fibers as a reinforcement ag…
Piezoelectric and pyroelectric materials are used in many current applications.The purpose of this paper is to explain the basic properties of pyroelectric and piezoelectric effects and demonstrate them in simple experiments.Pyroelectricity is presented on lead zirconium titanate (PZT) ceramics as an electric charge g…
Self-healing materials science has seen significant advances in the last decade. Recent efforts have demonstrated healing in polymeric materials through chemical reaction, thermal treatment, and ultraviolet irradiation. The existing technology for healing polymeric materials through the aforementioned mechanisms produ…
For the development of lead-free piezoelectric ceramics, which have a tetragonal–rhombohedral morphotropic phase boundary (MPB), 0.90(Na 0.5 K 0.5 )NbO 3 – x BaZrO 3 –(0.10 - x )(Bi 0.5 Li 0.5 )TiO 3 ceramics have been synthesized by the conventional solid state reaction method. A phase diagram was summarized from the…
A monolayer of gold nanorod vertical arrays is fabricated by interfacial self-assembly. It shows a high degree of ordering and strong coupling due to the small spacing between the nanorods. These continuous arrays cover an area of several millimeters and can be transferred to other substrates. They possess high unifor…
Digging for gold: Mixtures of tetraethylthiuram disulfide (Et4TDS) and I2 in acetone are capable of dissolving elemental gold and forming valuable metal complexes, in which the stoichiometry depends on the mixture composition. These mixtures can also etch the gold layer homogeneously and selectively from Si/SiO2/Ti/Au…
Aerogels are highly porous solids formed by replacing the liquid in a gel by air, without changing the original structure. The present cellulose aerogels are made by sublimating the water from a colloidal suspension of cellulose nanofibers. The nanofibers form three-dimensional networks, crosslinked by hydrogen bonds…
In this paper, the ambient doping effect on negative/positive bias temperature instability (NBTI/PBTI) of single layer graphene field effect transistors (FETs) is investigated. In ambient air, the$\Delta {\rm V}_{\rm th}$of NBTI is comparable with that of PBTI under the same stress voltage at room temperature. The$\De…
For the first time the fabrication of DFB laser devices based on polarization gratings in azobenzene-containing materials has been exploited. The gratings were inscribed by polarization holography in a layer of an azobenzene oligomer doped with a fluorophore (laser dye pyridine 1 or pyridine 2). The single step inscri…
Adv. Eng. Mater, 2013, 15, 379 DOI: 10.1002/adem.201200233 The following corrections of the above manuscript should be noted: The figure of merit zT was calculated wrong in Figure 4 and 5e of the above manuscript. The correct calculation can be seen in Figure 1 below. Also the maximum zT value is rather 0.30 at 700 °C…
Malonyl-coenzyme A decarboxylase (MCD) is found from bacteria to humans, has important roles in regulating fatty acid metabolism and food intake, and is an attractive target for drug discovery. We report here four crystal structures of MCD from human, Rhodopseudomonas palustris, Agrobacterium vitis, and Cupriavidus me…
ABSTRACT The preparation, characterization, release, and in vitro cytotoxicity of a biodegradable polymeric micellar formulation of paclictaxel (PTX) were investigated. The micelles based on thermosensitive and degradable amphiphilic polyaspartamide derivatives containing pendant aromatic structures (phe‐ g ‐PHPA‐ g ‐…
We report an extremely simple method of making an optically transparent superhydrophobic polydimethyl-siloxane (PDMS) thin film using underexposed and underbaked positive photoresist (PR) mold. Significant under soft-bake condition makes PR retain good amount of solvents, which greatly increases the dissolution rate o…
We investigate theoretically and numerically the tunability of the magnetic property of metamaterial in the THz region via thermal control. One component of the meta-atom is InSb, playing an important role as an alterable metal. When the temperature of the InSb stack increases from 300 to 350 K, the resonance peak of…
Summary Diatoms are one of the most important phytoplankton groups. As they grow, diatoms use silicon to produce a siliceous frustule, which protects the cell. During A pril– N ovember 2011, at 1–3 week intervals, we estimated diatom silicification rates at two distinct sites along the longitudinal profile of the cany…
Doxorubicin (Dox) is widely used for the treatment of solid tumors but its clinical utility on glioma is limited. In this study, we developed a novel nano-scale drug delivery system employing biodegradable nanoparticle (NP) as carriers to load Dox. Transferrin (Tf) was conjugated to the surface of NP to specifically t…
To investigate the influence of different combinations of peak acceleration and velocity change on repetitive-shock-induced damages leading to cumulative fatigue in products, we performed drop tests of products packaged similar to those in actual transportation, from several different drop heights and with two kinds o…
Beta-diketones are a versatile class of compounds that can complex almost any metal in the periodic table of elements. Their metal complexes are found to be fairly stable and generally have sufficient vapor pressure for deposition techniques requiring volatile metal sources. Motivated by the potential role of low ener…
Quantum Dots (QDs) stabilized with dihydrolipoic acid (DHLA) were used as a template for layer-by-layer (LbL) modification to study the effect on the QD optical properties. We studied several different polyelectrolytes to determine that large quantities of monodisperse DHLA-QDs could only be obtained with the weak pol…