Showing papers in "Materials Science and Engineering: C in 2006"

TL;DR: An overview of titanium alloy use for medical devices, their current status, future opportunities and obstacles for expanded application is provided in this article, which is divided into three main sections, the first discussing recent efforts focused on commercial purity titanium.

TL;DR: The large deformation elastic response of the spectrin network in a human red blood cell (RBC) is examined on the basis of molecular-level constitutive laws to be consistent with the predictions of continuum level models for the hyperelastic deformation of RBC.

TL;DR: It is observed that composites with ceramic contents ranging between 70 and 85 wt.% have mechanical properties that match reasonably those of human cortical bone, however, the properties deteriorate with immersion in Hanks' Balanced Salt Solution due to the degradation of the polymer phase.

TL;DR: In this article, an array of vertically aligned titanium oxide nanotubes was grown on the surface of titanium substrate by anodization, and a chemical treatment with NaOH solution to make them more bioactive with a formation of nanoscale sodium titanate structure.

TL;DR: The structure-property-function relationship of cells and biomolecules is investigated so as to understand their important physiological functions as well as establish possible connections to human diseases.

TL;DR: In this paper, an ex vivo fracture experiment was performed to quantitatively assess the effect of age on human cortical bone in the proximal-distal orientation, i.e., longitudinally along the osteons.

TL;DR: In this article, the authors describe the role of nanostructure on the mechanics and deformation behavior of nacre as well as identify the key mechanisms responsible for the unique mechanical behavior of Nacre.

TL;DR: In this paper, a comparison of shell properties with respect to the micro-structural architecture and sample orientation was carried out on three types of sea shells: conch, giant clam, and red abalone.

TL;DR: In this paper, a general composition formula for forming nano/ultrafine-structure is suggested based on the empirical rules for the composition design of bulk metallic glasses, and a group of quinary Ti alloys have been developed.

TL;DR: Schwertmannite [Fe 8 O 8 (OH) 6 SO 4 ] and jarosite [XFe 3 (SO 4 ) 2 (OH 6 ] were synthesized from FeSO 4 -mineral salts solutions that were inoculated with acidophilic iron-oxidizing bacteria ( Acidithiobacillus ferrooxidans) as mentioned in this paper.

TL;DR: In this paper, a biomimetic coating on carbon nanotubes (CNTs) was done with apatite coating, where the clusters of needle-shaped apatites were massively grown on the aggregated MWNTs.

TL;DR: In this paper, the effect of the hydrophobicity of two bacterial strains ( Pseudomonas stutzeri PS, and Staphylococcus epidermidis SE) and substrata surfaces on the adhesion mechanism was investigated.

TL;DR: In this article, the deformation rate dependency of bone properties such as compression and fracture toughness has been analyzed for predicting failure under dynamic loading conditions due to the visco-elastic response of bone.

TL;DR: In this article, a bio-inspired self-supporting MFI-type zeolite framework with hierarchical porosity and complex architecture was prepared using a 2-step (in-situ seeding and secondary crystal growth) hydrothermal synthesis in the presence of a biological template (Luffa sponge), employed as a macroscale sacrificial structure builder.

TL;DR: In this paper, a shape memory polymer (SMP), Calomer™, produced by The Polymer Technology Group, Inc., was investigated as a candidate for aneurysm coils, and the SMP was tested to determine its thermo-mechanical properties and the strength of the shape recovery force.

TL;DR: The relation between ITO morphology and surface properties has been studied by wettability measurements and AFM microscopy as discussed by the authors, and different wet cleaning procedures have been investigated leading to different surface properties: ultrasonic degreasing, RCA and Aqua regia treatment.

TL;DR: In this paper, the compressive plateau stress and Young's modulus of the TiZr foam were 78.4 MPa and 15.3 GPa, respectively, and the porous structure and the mechanical properties of the foam were very close to those of natural bone.

TL;DR: In this paper, the authors demonstrated the performance of functionalised TiO 2 thin films on Si substrates for the immobilization of several enzymes and biological molecules, such as glucose oxidase and horseradish peroxidase.

TL;DR: In this paper, the properties of a new class of composite materials, containing a predominantly high volume fraction of ceramic or glass phase, combined with minor organic (adhesive) phases, have been studied.

TL;DR: In this paper, the formation of fibrils and an associated increase in JIC fracture toughness are revealed to be restricted by an increase in crystalline content in polytetrafluoroethylene (PTFE).

TL;DR: In this paper, a novel porous scaffold for bone tissue engineering was prepared with nano-hydroxyapatite/collagen/Poly- l -lactic acid (PLLA) composite reinforced by chitin fibres.

TL;DR: More than 10 morphological types of shell structure such as the simple prismatic, nacreous, foliated, composite prismatic and crossed lamellar structures and the others are discriminated in bivalve shells as mentioned in this paper.

TL;DR: In this paper, the potential of carbon-related materials, such as carbon nanotubes (CNTs) and graphite nanofibers (GNFs), supported metal catalysts as an electrode for fuel cell application was investigated using the first-principle electronic structure calculations.

TL;DR: A biphasic scaffold with a stratified two-layer structure for osteochondral tissue engineering was developed from biodegradable synthetic and naturally derived polymers and used for culture of canine bone-marrow-derived mesenchymal stem cells.

TL;DR: In this paper, the surface energy minimization of organo-modified montmorillonite and polypyrrole (MMT/PPy) nanocomposites was investigated.

TL;DR: In this article, sulfide corrosion products were investigated for 316L stainless steel exposed to media with sulfate-reducing bacteria media for 7 weeks and the species of inorganic and organic sulfides in the passive film on the stainless steel were observed by epifluorescence microscope, environmental scanning electron microscope combined with energy dispersive spectroscopy and X-ray photoelectron spectrography.

TL;DR: In this article, the dynamic cyclic polarization tests indicated that dense and nanocrystalline anatase TiO2 coatings effectively improved corrosion resistance to avoid aggression of fluoride ion.

TL;DR: In this paper, two types of filters based on MnO2 powder and indigo powder were investigated to remove ozone while preserving nitrogen dioxide in a large temperature range from ambient to 400 -C, but they partially converted carbon monoxide.

TL;DR: In this paper, the Tin-doped indium oxide (ITO) films were prepared by the screen printing technique onto glass substrates and shown to have good sensing properties toward NH 3 vapours.

TL;DR: In this paper, the initial stage of recombinant human-like collagen (RHLC) mineralization was studied for the first time by using Fourier Transform Infrared Spectrometry (FTIR), Scanning Electron Microscopy (SEM) and Transmission Electron microscopy(TEM) images.