The Mg2Si intermetallic alloys have been prepared by using a powder metallurgy process. milling treatment of silicon as raw material to improve the formation phase was investigated in this research. un-milled and milled mixed with magnesium for 2 hours. powders were compacted stainless steel tubes sintered at 500 600°C 6 crystal structure identified X-ray diffractometer (XRD), while fracture su...

Low efficiency total-energy detectors (TEDs) are one of the main tools for neutron capture cross section measurements utilizing time-of-flight (TOF) technique. State-of-the-art TEDs based on a C6D6 liquid-scintillation cell optically coupled to fast photomultiplier tube. The large tube represents yet significant contribution so-called sensitivity background, which is most conspicuous sources un...

A micro Coriolis flow sensor accurately measures small mass flows without being affected by properties of the fluid. This paper presents a driven PZT thin film piezoelectric actuators, which allows combination large actuation force, low power dissipation and virtually no self-heating. The was fabricated using surface channel technology, resulting in tube diameter 40 <inline-formula xmlns:mml="h...

In this work, a novel Silicon on Insulator (SOI) MOSFET is proposed and investigated. The drain and source electrode structures are optimized to enhance ON-current while global device temperature and hot carrier injection are decreased. In addition, to create an effective heat passage from channel to outside of the device, a silicon region has embedded in the buried oxide. In order to reduce th...

Synthetic diamond films can be prepared on a waferscale by using chemical vapour deposition (CVD) on suitable substrates such as silicon or silicon dioxide. While such films find a wealth of applications in thermal management, in X-ray and terahertz window design, and in gyrotron tubes and microwave transmission lines, their use for nanoscale optical components remains largely unexplored. Here ...

Carbon nanotube adhesion force measurements were performed on single-walled nanotubes grown over lithographically defined trenches. An applied vertical force from an atomic force microscope (AFM), in force distance mode, caused the tubes to slip across the 250-nm-wide silicon dioxide trench tops at an axial tension of 8 nN. The nanotubes slipped at an axial tension of 10 nN after being selectiv...

We present scanning tunneling microscopy (STM) images of single-layer graphene crystals examined under ultrahigh vacuum conditions. The samples, with lateral dimensions on the micrometer scale, were prepared on a silicon dioxide surface by direct exfoliation of crystalline graphite. The single-layer films were identified by using Raman spectroscopy. Topographic images of single-layer samples di...

porous silicon layers have been prepared from n-type silicon wafers of (100) orientation. sem, ftir and pl have been used to characterize the morphological and optical properties of porous silicon. the influence of varying etching time in the anodizing solution, on structural and optical properties of porous silicon has been investigated. it is observed that pore size increases with etching tim...