During the past ten years, the ARIES Team has studied a variety of tokamak power plants with different degrees of extrapolation in plasma physics and technology from present database. Continuation of research has allowed us to apply lessons learned from each ARIES design to the next. The results of ARIES tokamak power plant studies provide a large body of data that highlight the contribution, t...

Self-assembled GaInNAs quantum dots (QDs) were grown on GaAs (001) substrate using solidsource molecular-beam epitaxy (SSMBE) equipped with a radio-frequency nitrogen plasma source. The GaInNAs QD growth characteristics were extensively investigated using atomic-force microscopy (AFM), photoluminescence (PL), and transmission electron microscopy (TEM) measurements. Self-assembled GaInNAs/GaAsN ...

Introduction: Optical communication systems operating at 10 Gbit=s are becoming increasingly important even for short reach applications such as metro, access and data-link networks. In fact, approximately 40% of all commercial 10 Gbit=s interfaces to be deployed between 2003 and 2006 are expected to be short reach (<2 km) [1]. A key enabling technology for the development of such systems is a ...

Nano sulfated titania was tested as solid acid heterogeneous catalyst for the synthesis of 4-(Trifluoromethyl) coumarin and coumarin derivatives under solvent-free condition. Factorial design evidenced a positive effect of reaction temperature, amount of catalyst, and solvents.  This nano-sized sulfated titania has been prepared by a sol-gel hydrothermal process. The prepared sulfated titania s...

introduction: excessive temperature rise during drilling of the mandible for dental implant placement might damage adjacent osseous tissues. various factors affect temperature rise, including the geometrical parameters of surgical drills, one of which is the drill bit head angle. the aim of this research was to determine suitable drill bit head angle to induce minimum temperature rise during ma...

Abstract It has been proven that the maximum cooling temperature of a thermoelectric material can be increased by using either pulsed operation or graded Seebeck profiles. In this paper, we show that the maximum cooling temperature can be further increased by the pulsed operation of optimal inhomogeneous thermoelectric materials. A random sampling method is used to obtain the optimal electrical...

We report temperature phase-matched second-harmonic generation of 1.064-Am radiation in Ti-indiffused waveguides in MgO-doped LiNbO3 substrates. Noncritical phase matching of the TE2 mode was achieved at 102-106°C. Owing to the high-temperature operation and the low photorefractivity of the waveguide, it was possible to generate 22-mW average-power 532-nm output. No evidence of photorefractive ...

Silicon carbide (SiC) is a semiconductor that provides significant advantages for high-power and high-temperature applications thanks to its wide bandgap, which is several times larger than silicon. The resulting high breakdown field, high thermal conductivity and high intrinsic temperature (well above 600 °C) allow high temperature operation of SiC devices and relaxed cooling requirements. In ...