Showing papers in "Science and Technology of Advanced Materials in 2009"

TL;DR: This review summarizes the conditions leading to the growth of different ZnO nanostructures using hydrothermal technique.

TL;DR: The electric current activated/assisted sintering (ECAS) is an ever growing class of versatile techniques for sinterding particulate materials as discussed by the authors. But despite the tremendous advances over the last two decades in ECASed materials and products, there is a lack of comprehensive reviews on ECAS apparatuses and methods.

TL;DR: The physics of microscopic charge transport by using SC-OFETs at metal/semiconductor contacts and along semiconductor/insulator interfaces reveals that interface charge transport in molecular semiconductors is properly described in terms of band transport and localization by charge traps.

TL;DR: New organic semiconductors resulting in high-performance FET devices are described here and the relationship between transistor characteristics and chemical structure is discussed.

TL;DR: Tensile testing of Ti-6Al-4V components fabricated by shaped metal deposition shows that the mechanical properties are competitive to material fabricated by conventional techniques, and heat treatment within the β phase field increases the ultimate tensile strength and decreases the ductility.

TL;DR: This review discusses the potential distribution around a soft particle, the electrostatic interaction between two soft particles, and the motion of a soft particles in an electric field.

TL;DR: The carbon nanocones are found to exhibit several interesting structural features; instead of having a uniform cross-section, the walls consist of a relatively thin inner graphite-like layer with a non-crystalline envelope, where the amount of the latter can be modified significantly by annealing.

TL;DR: The antibacterial activity of silver nanorods can be enhanced by applying an electric field, for application in medical and food-preserving fields.

TL;DR: In this paper, a review introduces and summarizes lyotropic liquid crystal (LLC) directed syntheses of nanostructured materials consisting of porous nanostructure and zero-dimensional (0-D), 1-D and 2-D.

TL;DR: Light is shed on a new aspect of Dirac fermion physics, i.e. the emergence of unique electronic properties owing to the structure of the material.

TL;DR: Highly conducting molecular metals with unusual oxidation states (+1, +5/3 and neutral) have been developed on the basis of 2,5-bis( 1,3-dithiol-2-ylidene)-1,3,4,6-tetrathiapentalene (BDT-TTP) derivatives and analogous metal derivatives M(dt)2 (M = Ni, Au).

TL;DR: The present system provides a new type of massless Dirac fermion system with anisotropic Fermi velocity and exhibits remarkable transport phenomena characteristic to electrons on the Dirac cone type energy structure.

TL;DR: Porous hydroxyapatite and BCP ceramics had a greater potential for promoting the differentiation of mesenchymal stem cells into osteoblasts than β-TCP.

TL;DR: Both the nanofibers and charred materials acted as an excellent insulator and/or mass transport barrier, improving the fire retardancy of the composite and agrees well with the general mechanism ofFire retardancy in various nanoparticle-thermoplastic composites.

TL;DR: It was found that the efficiency of removing metal ions using the swollen hydrogel was greater than that using the dried composite and the adsorption abilities of a dried PAC/PEG composite were compared.

TL;DR: The valence bond ordering, similar to the spin-Peierls transition, has been found in a two-dimensional frustrated spin system and the physical aspects and possible relation to the pressure-induced superconductivity are discussed.

TL;DR: The findings indicate that the microfluidic continuous flow particle separation system could be viable for the separation of materials of differing size and/or diamagnetic susceptibility, and as such could be suitable for theseparation and sorting of small biological species for subsequent studies.

TL;DR: In this paper, it has been shown that texturing is easy to achieve in congruent and non-congruent compounds by applying the magnetic field above the melting temperature Tm or above the liquidus temperature of alloys.

TL;DR: The inhibition of grain growth in the bicomponent mixed powders in comparison with 3YTZ was demonstrated, and the inhibition of the grain growth may have been caused by inter-diffusion of cations during the sintering.

TL;DR: In this article, the application of solid micro-and nanostructures of various shapes as building blocks for microelectro-mechanical or nano-electroelectronemic systems (MEMS/NEMS) is considered.

TL;DR: A model for the mediation of the bactericidal activity is proposed in which the photogeneration of highly oxidizing species and the presence of active surface defect sites both play an important role.

TL;DR: The magnetization measurement of the c-axis oriented powders revealed that the type of RE ions strongly affected not only the directions of the easy axis but also the absolute value of magnetic anisotropy, and an appropriate choice of RE ion is required to minimize the magnetic field used for grain orientation.

TL;DR: Transmission electron microscopy, small-angle x-ray scattering, and N2 adsorption data of PMO with controlled organic contents indicated that the ethane fragments were embedded in the frameworks with the formation of ordered mesostructures.

TL;DR: Post source decay spectra by nano-PALDI mass spectrometry will yield information of the chemical structure of analytes, as well as conventional ionization assisting reagents.

TL;DR: Porous germanium films with good adhesion to the substrate were produced by annealing GeO2 ceramic films in H2 atmosphere with high density of holes and a maximum of Hall mobility at ∼225 K.

TL;DR: The results show that PBPPy composite nanoparticles can be used to develop oxidase-based biosensors and exhibit intrinsic electrochemical properties and a high electrocatalytic activity towards H2O2.

TL;DR: Mesoporous material RH-MCM-41 was synthesized with rice husk silica by a hydrothermal method and used as a support for bimetallic platinum−iron catalysts Pt–Fe/RH-MC-41 for phenol hydroxylation, which displayed well-ordered structures and metal nanoparticles were observed in some catalysts.

TL;DR: The maximum values of experimental strength are thought to correspond to the inherent strength of Mo nanocrystals under uniaxial tension (19.8 GPa, or 7.5% of Young's modulus), which suggests that the strength decreases with increasing nanorod diameter.

TL;DR: FIB-CVD is proven as an efficient fabrication technology of novel nanoelectromechanical devices that can be used as nanotools in nanofactories and for spot deposition, and its electron field emission was confirmed.

TL;DR: The studies seem to suggest that the minimal model to understand the charge correlation in θ-(BEDT-TTF)2X may be more complicated than expected.