To meet the unprecedented demands for data transmission speed and bandwidth silicon integrated photonics that can generate, modulate, process and detect light signals is being developed. Integrated silicon photonics that can be built using existing CMOS fabrication facilities offers the tantalizing prospect of a scalable and cost-efficient solution to replace electrical interconnects. Silicon, ...

This study was conducted to evaluate the potency of the newly prepared germanium L-cysteine-alpha-tocopherol complex [germanium dichloro tetrakis (L-cysteinyl-alpha-tocopherol amide) dichloride] as a protective agent against gamma-irradiation-induced free radicals production and liver toxicity. Male Swiss albino rats were injected intraperitoneally with the germanium complex in a concentration ...

for an Invited Paper for the MAR08 Meeting of The American Physical Society Dangling-bond defects and hydrogen passivation in germanium JUSTIN R. WEBER, Department of Physics, University of California, Santa Barbara, California 93106-9530, USA The application of germanium in complementary metal-oxide semiconductor (CMOS) technology is hampered by high interface-state densities, the microscopic ...

germanium nanowires (genws) were synthesized using chemical vapor deposition (cvd) based on vapor–liquid–solid (vls) mechanism with au nanoparticles as catalyst and germanium tetrachloride (gecl4) as a precursor of germanium. au catalysts were deposited on silicon wafer as a thin film, firstly by sputtering technique and secondly by submerging the silicon substrates in au colloidal solution, wh...

However, the co-existence of metallic and semiconducting tubes in as-synthesized SWNT samples has been a bottleneck for fundamental research and fabrication of electronic and optoelectronic devices. [ 6 ] It is desirable to develop effective purifi cation methods by which SWNT samples enriched in semiconducting species may be prepared. Various methods to sort semiconducting from metallic nanotu...

Metallic and semiconducting carbon nanotubes generally coexist in as-grown materials. We present a gas-phase plasma hydrocarbonation reaction to selectively etch and gasify metallic nanotubes, retaining the semiconducting nanotubes in near-pristine form. With this process, 100% of purely semiconducting nanotubes were obtained and connected in parallel for high-current transistors. The diameter-...

We studied the femtosecond dynamics of photoexcitations in films containing semiconducting and metallic single-walled carbon nanotubes (SWNTs), using various pump-probe wavelengths and intensities. We found that confined excitons and charge carriers with subpicosecond dynamics dominate the ultrafast response in semiconducting and metallic SWNTs, respectively. Surprisingly, we also found from th...

— In the large family of ternary compounds one could expect to find systematic trends for the various physical properties. For instance the geometrical arrangement of the atoms is, in most ternaries, tetrahedral. Beyond qualitative laws very few quantitative relationships have been established between crystallographic structures and other physical and chemical properties Topics such as tetrahed...

Several experiments have been performed on 1T-TiSe_{2} in order to identify whether the electronic structure is semimetallic or semiconducting without reaching a consensus. In this Letter, we theoretically study the impact of electron-hole and electron-phonon correlations on the bare semimetallic and semiconducting electronic structure. The resulting electron spectral functions provide a direct...

We have combined fast heating with plasma enhanced chemical vapor deposition (PECVD) for preferential growth of semiconducting vertically aligned single-walled carbon nanotubes (VA-SWNTs). Raman spectroscopic estimation indicated a high yield of up to 96% semiconducting SWNTs in the VA-SWNT array. The as-synthesized semiconducting SWNTs can be used directly for fabricating FET devices without t...