To improve the contact between platinum catalyst and titanium substrate, a layer of TiO 2 nanotube arrays has been synthesized before depositing Pt nanoflowers by pulse electrodeposition. Dramatic improvements in electrocatalytic activity (3×) and stability (60×) for methanol oxidation were found, suggesting promising applications in direct methanol fuel cells. The 3× and 60× improvements persi...

Solid Freeform Fabrication (SFF), also referred to as Layered manufacturing (LM), is a new method of fabrication. Unlike conventional manufacturing (e.g., CNC machining), where a part is fabricated by selectively removing material from a workpiece, in SFF, a part is built by depositing material, layer-by-layer, under computer control. Solid Freeform Fabrication is in principle a 2.5D process st...

We have imaged a freestanding graphene sheet of 210 nm in diameter with 2 Å resolution by combining coherent diffraction and holography with low-energy electrons. The entire sheet is reconstructed from a single diffraction pattern displaying the arrangement of 660.000 individual graphene unit cells at once. Given the fact that electrons with kinetic energies of the order of 100 eV do not damage...

The magnetization state of electrodeposited Fe/Au(1 1 1) layers is investigated during the growth using in situ alternating gradient force magnetometry. It is shown that perpendicular magnetization anisotropy occurs as long as the thickness t (2ML. The e!ect of depositing Cu on top is also studied. Results are compared to those obtained with MBE layers and discussed in the light of preliminary ...

The strategy in biomineralization of initially depositing a less ordered mineral and then transforming it into a more crystalline mature phase is probably widespread among invertebrates. The report in this issue by N.J. Crane, V. Popescu, M.D. Morris, P. Steenhuis, M.A. Ignelzi, Raman spectroscopic evidence for octacalcium phosphate and other mineral species deposited during intramembraneous mi...

Report of an early case of Shy-Drager syndrome in a 67 year-old woman patient. Autonomic failure was diagnosed by functional evaluation as well as laboratory tests. MR imaging disclosed a prominent putamina hypodensity in T2-weighted images at high field strength due to iron increased depositing in this basal ganglia. MR imaging evidences confirm Shy-Drager syndrome diagnosis, and contributes f...

The enzymatic hydrolysis of the particular quality of raw material yield natural free amino acids and low molecular weight peptides in an ideal synergetic mixture. Tests made also directly on hair have shown the excellent properties of KELYAMIN for hair care formulations. The free amino acids are capable of penetrating the hair shaft whereas the peptides with their film-forming properties compl...

A MoSe2/Si heterojunction photodetector is constructed by depositing MoSe2 film with vertically standing layered structure on Si substrate. Graphene transparent electrode is utilized to further enhance the separation and transport of photogenerated carriers. The device shows excellent performance in terms of wide response spectrum of UV-visible-NIR, high detectivity of 7.13 × 1010 Jones, and ul...

The experimental station for measuring X-ray absorption spectra in total reflection geometry operative at the GILDA CRG beamline of ESRF is described. The main features of the station are shown, namely: the possibility of detecting very small signals from thin (a few ML) samples, of depositing thin films under controlled conditions and thermal treating the samples in order to study dynamical pr...

Miniaturized detection systems for nanometer-sized airborne particles are in demand, as in applications for onboard diagnostics downstream particulate filters in modern diesel engines. A soot sensor based on resistivity measurements was developed and characterized. This involved generation of soot particles with properties similar to diesel engines using a quenched co-flow diffusion flame; depo...