Diamond attracts considerable attention as a versatile and technologically useful material. For many demanding applications, such as recently emerged quantum optics and sensing, it is important to develop new routes for fabrication of diamond containing defects with specific optical, electronic and magnetic properties. Here we report on successful synthesis of diamond from a germanium-carbon sy...

Abstract. The interstitial oxygen centers in silicon and germanium are reconsidered and compared in an analysis based on the first-principles total-energy determination of the potential-energy surface of the centers, and a calculation of their respective low energy excitations and infrared absorption spectra. The total-energy calculations reveal unambiguously that interstitial oxygen is quantum...

We present a combined experimental and theoretical study of ruthenium doped germanium clusters, RuGen(-) (n = 3-12), and their corresponding neutral species. Photoelectron spectra of RuGen(-) clusters are measured at 266 nm. The vertical detachment energies (VDEs) and adiabatic detachment energies (ADEs) are obtained. Unbiased CALYPSO structure searches confirm the low-lying structures of anion...

Crystallization of microdroplets of molten alloys could, in principle, present a number of possible morphological outcomes, depending on the symmetry of the propagating solidification front and its velocity, such as axial or spherically symmetric species segregation. However, because of thermal or constitutional supercooling, resulting droplets often only display dendritic morphologies. Here we...

UNLABELLED In PET, transmission scanning for attenuation correction has most commonly been performed with an external positron-emitting radionuclide source, such as (68)Ge. More recently, combined PET/CT scanners have been developed in which the CT data can be used for both anatometabolic image formation and attenuation correction of the PET data. The purpose of this study was to assess the qua...

In a previous publication it has been shown that germanium dioxide is non-toxic to the mature female albino rat when injected subcutaneously in amounts up to 180 mg. per kilo of body weight. This is a quantity equivalent to a dose of nearly 11 gin. for a 60 kilo man. The measure of the toxicity was survival after the administration of the compound. In no case did any animal receiving the german...

This application note describes how silicon germanium enhances IC performance in RF applications. A Giacoleto model is used to analyze noise effects. Wider gain bandwidth of SiGe technology is shown to provide lower noise performance. The impact of SiGe on linearity is explored. Three parameters are increasingly important for cellular handsets and other digital, portable, wireless communication...

This application note describes how silicon germanium enhances IC performance in RF applications. A Giacoleto model is used to analyze noise effects. Wider gain bandwidth of SiGe technology is shown to provide lower noise performance. The impact of SiGe on linearity is explored. Three parameters are increasingly important for cellular handsets and other digital, portable, wireless communication...