The fractional thermal loading in a diode-end-pumped solid-state laser is deduced from experimental measurement of the critical pump power. The results show that fractional thermal loading critically depends on the pump-to-mode size ratio. This dependence is attributed to the effect of the pump-to-mode size ratio on the population inversion and to the effect of energy-transfer upconversion. Rig...

Superconductivity and optoelectronics have developed almost independently and had very rare interactions with each other in science and technologies. However recent interdisciplinary research opens up the potential for developing new optoelectronic devices. This review paper presents our recent theoretical and experimental demonstrations that superconductivity significantly modifies and acceler...

Triblock, diblock and random copolymers of poly(ethylene oxide) and poly(propylene oxide) are used as molecular templates in poly(methyl silsesquioxane) (MSQ) matrices to fabricate ultra low-k dielectric materials (kp2:0). Solidstate NMR shows that polymer architecture plays an important role in the polymer domain size and the polymer– matrix interface in the nanocomposites. Positronium annihil...

We present the results of backside non-invasive optical testing of CMOS Flip-Chips. The exploited principle is the hot-carrier luminescence emitted by MOS transistors in saturation. The set-up is based on a solidstate single-photon avalanche diode with a time resolution better than 30ps. We discuss the methodology for backside investigation, the criteria for selecting the appropriate detector, ...

Bismuth niobate solid solutions, BixNbOδ (2.5 ≤ x ≤ 6), have been prepared using a mechanochemical method. The solid solutions were also prepared using a solidstate conventional method for comparison purposes. Bi3NbO7 was successfully obtained via a mechanochemical method at a lower synthesis temperature (milled at 1000 rpm for one hour followed by heating at 700C for 24 h) than the conventiona...

After the huge development occurred during the last 30 years, including the proposition of methods such as magic-angle spinning, multiple-resonance experiments (cross-polarization, high-power decoupling, etc.), multiple-pulses techniques, multiple quantum experiments, and multidimensional spectroscopy, pulsed SolidState NMR became one of the most important experimental tools for studying physic...

Gartner defines mobile data protection (MDP) products and services as software security methods that enforce confidentiality policies by encrypting data, and then defending access to that encrypted data on the primary and secondary storage systems of end-user workstations. These storage systems include the primary boot drive of a workstation and removable devices used for portability. Storage t...

Physico-chemical doubts and paradoxes abound in the description of forces and in the molecular simulation of the crystalline state, as they did in Boyle’s times about the inner structure of matter. Solidstate structuring and bonding are still characterized in sometimes doubtful, sometimes paradoxical, and sometimes distorted terminologies. Phase transitions are mostly considered as just relatio...

Blends of polyaryletherketones (PAEK) with polybenzimidazole (PBI) are of commercial interest due to their improved upper service temperatures and wear properties when compared with the PAEK analogs examined to date. The retention of properties of the PBI component generally thought to be disadvantageous in more thermally or chemically aggressive environments is not well understood, nor are the...

saeed baghery was born in amol/mazandaran (iran) in 1985. he completed his b.sc. in pure chemistry in 2009 from islamic azad university of amol, mazandaran, iran. he was graduated from m.sc. degree under the supervision of dr. seyed mohammad vahdat in organic chemistry from islamic azad university of amol, mazandaran, iran. he is currently organic chemistry ph.d student under the supervision of...