We utilized a metal tantalum (Ta) ball-probe to measure the electrical properties of vertical-aligned one-dimensional (1D) nickel-oxide (NiO) nanorods. The 1D NiO nanorods (on average, ~105 nm wide and ~700 nm long) are synthesized using the hot-filament metal-oxide vapor deposition (HFMOVD) technique, and they are cubic phased and have a wide bandgap of 3.68 eV. When the 1D NiO nanorods are ar...

We report on the dispersion of the third-order nonlinear susceptibility (chi(3) or "Chi 3") in planar Ta2O5 waveguides in the telecommunications spectral window. We utilize the observation of third-harmonic generation under ultrashort pulsed excitation as a reference-free characterization method of chi(3) and obtain a large nonlinear coefficient, 2x10(-13) esu, at 1550 nm. Our observation of ef...

Heavy-atom clusters (HA clusters) containing a large number of specifically arranged electron-dense scatterers are especially useful for experimental phase determination of large complex structures, weakly diffracting crystals or structures with large unit cells. Often, the determination of the exact orientation of the HA cluster and hence of the individual heavy-atom positions proves to be the...

New magnesium based intermetallic compounds PrPtMg, NdPtMg and SmPtMg were synthesized from the elements by reaction in sealed tantalum tubes in a high-frequency furnace. The three compounds were investigated by X-ray powder and single crystal diffraction: ZrNiAl type, space group P6̄2m, a = 752.34(8), c = 412.66(4) pm, wR2 = 0.0668, 341 F 2 values, 14 variables for PrPtMg, a = 748.80(8), c = 41...

Improving the hardness of amorphous carbon nitride with tantalum was realized by using ion beam assisted filtered arc deposition to obtain a low friction coefficient and specific wear rate in ambient air. The coatings were prepared different nitrogen flow during coating at discharge cycles tantalum. scar as-deposited surfaces observed analyzed means FESEM, AES, XPS, Raman analysis. lowest (~0.0...

Layered ternary chalcogenides AxMX2 (A = al­ kali metal, M = transition metal, X = S, Se) of group IV b to VI b elements may be prepared either by reactions a t high temperatures (600-1000 °C) from the elements1 and via alkali halide m elts2 or at low temperatures from the corresponding binary phases MX2 by intercalation of alkali metals from liquid ammonia3. Both series of compounds were found...

Introduction An exciting approach to reducing aseptic loosening of cementless implants is the stimulation and acceleration of bone ingrowth into the porous coatings of the implants. Improved fixation of components is an important factor for long term success of total hip and total knee replacement. While one method of stimulating bone formation utilizes biological agents such as BMP-2 or OP-1. ...

Tantalum rod implant following core decompression is reported to be effective in early stage of osteonecrosis of the femoral head (ONFH). The purpose of this study was to assess the survivorship and prognostic factors for radiographic progression and conversion to total hip arthroplasty (THA) after treatment with a modified tantalum implant technology. 59 consecutive hips (45 patients) in whom ...