diamond like carbon (dlc) film was grown by hot filament chemical vapor deposition (hfcvd)technique. in the present work, we investigated the quality of the dlc films groew on the substratesthat were coated with various metal nanocatalysts (au and ni). a combination of ch4/ar/h2 rendersthe growth of carbon nanostructures technique (diamond like carbon). the utilized samples werecharacterized by...

We report on multiplexing several Fabry-Pérot (FP) cavities in single-mode optical fibers for highprecision spatially resolved sensing of refractive indices (RI) liquids. Resonators are fabricated by cutting small slots into using a diamond-blade dicing saw and additional coating with thin Ta 2 O 5 layers to increase cavity reflectance. Temperature compensation RI measurements is achieved eithe...

Graphene demonstrated potential for practical applications owing to its excellent electronic and thermal properties. Typical graphene field-effect transistors and interconnects built on conventional SiO2/Si substrates reveal the breakdown current density on the order of 1 μA/ nm (i.e., 10 A/cm), which is ∼100× larger than the fundamental limit for the metals but still smaller than the maximum a...

Structures and energetics of various types of silicon nanowires have been investigated using quantum molecular dynamics simulations to determine the most stable forms. The tetrahedral type nanowires oriented in the 111 direction are found to be the most stable. The stability of the cagelike nanowires is determined to lie somewhere between this and tetrahedral nanowires oriented in other directi...

We carried out a retrospective study to assess the clinical results of lengthening the fourth metatarsal in brachymetatarsia in 153 feet of 106 patients (100 female, six males) using three different surgical techniques. In one group lengthening was performed by one-stage intercalary bone grafting secured by an intramedullary Kirschner-wire (45 feet, 35 patients). In the second group lengthening...

Submerged arc welding (SAW) is an important metal fabrication technology specially applied to join metals of large thickness in a single pass. In order to obtain an efficient joint, several process parameters of SAW need to be studied and precisely selected to improve weld quality. Many methodologies were proposed in the past research to address this issue. However, a good number of past work s...

The metastable hexagonal-diamond phase of Si and Ge (and SiGe alloys) displays superior optical properties with respect to the cubic-diamond one. latter is most stable popular one: growing or without working at extreme conditions proved not be trivial. Recently, however, possibility group-IV nanowires has been demonstrated, attracting attention on such systems. Based first-principle calculation...