Materials Literature
按标题、摘要、年份、主题和来源检索公开元数据。结果保留作者、摘要、分类与原始来源链接。
Atomistic simulation techniques are employed to investigate the energetics of defect formation, dopant−defect association, and ion migration in orthorhombic LaFeO 3 in relation to electrochemical applications. Point defect calculations suggest that intrinsic Schottky or Frenkel disorder is not significant. The results…
We have successfully prepared multiscale porous crystalline zirconia (ZrO 2 ) monoliths by combining the alkoxy-derived sol–gel process accompanied by phase-separation and the solvothermal process. The gelation can be controlled by the addition of N -methylformamide to the starting solution, while the phase separation…
Nanocomposite fiber is one of the most fascinating materials with broad applications. In the present work, nanocomposite fibers were prepared by using a low-cost, simple, and “green” process as follows. Regenerated cellulose (RC) fibers were spun from cellulose dope in 7 wt % NaOH/12 wt % urea aqueous solution precool…
Biodegradable polymeric scaffolds are widely used as a temporary extracellular matrix in tissue engineering and regenerative medicine. By physical adsorption of biomolecules on scaffold surface, physical entrapment of biomolecules in polymer microspheres or hydrogels, and chemical immobilization of oligopeptides or pr…
We report the results of effective direct current (dc) resistivities and alternating current (ac) complex permittivity measurements carried out on two series of polymer∕multiwalled (MW) carbon nanotube (CNT) composite samples as function of the CNTs volume fraction and temperature. The CNTs have typical aspect ratio o…
Nanoparticles made of poly(butyl cyanoacrylate) (PBCA) or poly(lactic-co-glycolic acid) (PLGA) coated with polysorbate 80 or poloxamer 188 enable the transport of cytostatics such as doxorubicin across the blood-brain barrier (BBB). Following intravenous injection to rats bearing intracranially the very aggressive gli…
Abstract. Practical quantitative chemical state X-ray photoelectron spectroscopy (XPS) analysis of first row transition metals, oxides and hydroxides is challenging due to the complexity of their M 2p spectra. Complex multiplet splitting, shake-up and plasmon loss structure can play a role in the interpretation of the…
Abstract Nanostructured materials are increasingly subject to nearly every type of chemical and physical analysis possible. Due to their small sizes, there is a significant focus on tools with high spatial resolution. It is also natural to characterize nanomaterials using tools designed to analyze surfaces, because of…
The iolABCDEFGHIJ operon of Bacillus subtilis is responsible for myo-inositol catabolism involving multiple and stepwise reactions. Previous studies demonstrated that IolG and IolE are the enzymes for the first and second reactions, namely dehydrogenation of myo-inositol to give 2-keto-myo-inositol and the subsequent…
The occurrence of non-adiabatic effects in the vibrational properties of metals have been predicted since the 60's, but hardly confirmed experimentally. We report the first fully \emph{ab initio} calculations of non-adiabatic frequencies of a number of layer and conventional metals. We suggest that non-adiabatic effec…
DFT calculation of various atomic species on graphene sheet is investigated as prototypes for formation of nano-structures on carbon nanotube (CNT) wall. We investigate computationally adsorption energies and adsorption sites on graphene sheet for a lot of atomic species including transition metals, noble metals, nitr…
The possibility of incorporating carbon-based nanomaterials into living systems has opened the way for the investigation of their potential applications in the emerging field of nanomedicine. A wide variety of different nanomaterials based on allotropic forms of carbon, such as nanotubes, nanohorns and nanodiamonds, a…
Gold nanoparticles with two different size distributions (average sizes of ∼1.5 and ∼5 nm) have been synthesized by inverse micelle encapsulation and deposited on reducible (TiO 2 ) and nonreducible (SiO 2 ) supports. The thermal and chemical stability of oxidized gold species formed upon cluster exposure to atomic ox…
Major advances in the use of carrier vehicles delivering pharmacologic agents and enzymes to sites of disease have occurred over the past 10 years. This review focuses on the concepts and clinical evaluation of carrier-mediated anticancer agents that are administered i.v. or orally. The primary types of carrier-mediat…
The coupling of electronic and biological functionality through self-assembly is an interesting target in supramolecular chemistry. We report here on a set of diacetylene-derivatized peptide amphiphiles (PAs) that react to form conjugated polydiacetylene backbones following self-assembly into cylindrical nanofibers. T…
The aim of this article is to investigate the extent of space charge accumulation due to a temperature gradient in comparison with other charge-supply mechanisms, particularly injection from the electrodes. For this purpose, space-charge measurements were carried out on HVDC cable models under application of different…
A simple electrochemical and self-assembly method was adopted for the fabrication of superhydrophobic spongelike nanostructured TiO2 surfaces with markedly controllable adhesion. Water adhesion ranging from ultralow (5.0 microN) to very high (76.6 microN) can be tuned through adjusting the nitro cellulose dosage conce…
We study the nucleation dynamics of a model solid state transformation and the criterion for microstructure selection using a molecular dynamics (MD) simulation. Our simulations show a range of microstructures depending on the depth of quench. We closely follow the dynamics of the solid and find that transient {\em no…
We have developed a simple and efficient method for the covalent functionalization of detonation nanodiamond. After homogenization of the surface by borane reduction, the surface was modified with (3-aminopropyl)trimethoxysilane. Subsequent grafting of biotin yielded covalently biotinylated nanodiamond, which was char…
Polyelectrolyte multilayer films have been well characterized for almost two decades and there is now a growing interest for the development of biomimetic films that could be used in vitro or in vivo to control cellular behaviors. In this review, the important properties of multilayer films designed for cell/surface i…