introduction: port wine stains (pws) are congenital vascular malformations. pulsed dye laser (pdl) is the treatment of choice till now, although many lesions do not respond completely. one of possible options is long pulsed alexandrite laser. some literatures confirmed its efficacy. the aim of the present study is to determine the efficacy of this laser as an option in treating refractory pws i...

Graphite nanoplatelets have recently attracted considerable attention as a viable and inexpensive filler substitute for carbon nanotubes in nanocomposites, given the predicted excellent in-plane mechanical, structural, thermal, and electrical properties of graphite. As with carbon nanotubes, full utilization of graphite nanoplatelets in polymer nanocomposite applications will inevitably depend ...

a r t i c l e i n f o The adhesion of Pt to carbon surfaces is an important technological consideration in proton exchange membrane fuel cells (PEMFCs). Thin films of Au, Ti and Cr were deposited on graphite, non-hydrogenated diamond-like carbon (NH-DLC) and hydrogenated DLC (H-DLC) coatings' surfaces using a physical vapour deposition (PVD) process. The friction force curves obtained from slid...

the angular dependent magnetoresistance oscillation (admro) of the stage-2 ibr graphiteintercalation compound (gic) was studied between 1.8 k and 110 k in magnetic fields between 1 and 9t. there was a series of peaks in the c-axis resistance as the field direction was changed from the c axisto the (001) plane. the field independence of the angular positions of the peaks, showing that theoscilla...

Abstract Joining the aluminium 6061-T6 alloy (Al6061-T6) using Electron Beam Welding (EBW) wais important, especially in aerospace. Although EBW method has been used for different materials literature, there are a limited number of studies Al6061-T6 alloy. The study aimed at weldability and welding quality plates by experimentally numerically technique. A numerical model generated to obtain app...

High resolution electron microscopy requires that the specimen supports be smooth. With this in mind a procedure was developed for cleaving single graphite crystals into thin flakes suitable as specimen supports. Fernfindez-Morfin (1) was the first to use graphite and mica crystals for specimen supports. He as well as Sprague (2) obtained the thin sheets of mica and graphite required through su...

Cast iron presents graphite particles of different shapes that directly affect its thermo-mechanical properties [1]. Fracture toughness and ductility depend strongly on the shape of the graphite particles. Particles with nodular shapes improve these properties while more elongated particles or with irregular contours are detrimental due to stress concentration points [2]. Thus, cast iron is cla...

The unique properties of single-walled carbon nanotubes are a direct result of their distinctive structure, which is composed of C-C bonds more closely related to those in graphite than to those in diamond. That is, while diamond has a coordination number of four with sp hybridization, graphite involves three-coordinated carbons, in which three electrons are in sp hybridization and one is deloc...

Todd Schumann, Sefaattin Tongay, Arthur F. Hebard Department of Physics, University of Florida, Gainesville FL 32611 This article demonstrates the formation of Schottky diodes on silicon (Si), gallium arsenide (GaAs), and 4H-silicon carbide (4H-SiC) using the semimetal graphite. The forward bias characteristics follow thermionic emission theory, and the extracted Schottky barrier heights closel...

We have developed a unique micromechanical method to extract extremely thin graphite samples. Graphite crystallites with thicknesses ranging from 10 to 100 nm and lateral size ,2 mm are extracted from bulk. Mesoscopic graphite devices are fabricated from these samples for electric field-dependent conductance measurements. Strong conductance modulation as a function of gate voltage is observed i...