Semiconductor nanowires exhibit very exciting optical and electrical properties including high transparency and a several order of magnitude better photocurrent than thin film and bulk materials. We present here the mechanism of nanowire growth from the melt-liquid-vapor medium. We describe preliminary results of binary and ternary selenide materials in light of recent theories. Experiments wer...

An enzyme preparation from Salmonella typhimurium catalyzes the conversion of 5-methylaminomethyl-2-thiouridine in tRNAs to 5-methylaminomethyl-2-selenouridine when supplemented with selenide and ATP. Similar preparations from a Salmonella mutant strain carrying a defective selD gene fail to catalyze this selenium substitution reaction. However, supplementation of the deficient enzyme preparati...

Inert metal-selenide colloids are found in animals. They are believed to afford cross-protection against the toxicities of both metals and selenocompounds. Here, the toxicities of metal salt and sodium selenide mixtures were systematically studied using the death rate of Saccharomyces cerevisiae cells as an indicator. In parallel, the abilities of these mixtures to produce colloids were assesse...

Zinc selenide (ZnSe) a II-VI compound semiconductor with cubic zinc blende structure and a direct bandgap of 2.7 eV is found to be a very promising material for optoelectronic devices (Venkatachalam et al., 2007a). Semiconductor heterostructures employing zinc selenide and related alloys are an option for the production of optoelectronic devices emitting in the blue – green spectral range (Haas...

• Kerr-lens mode-locking of hot-isostatic-pressed Cr:ZnSe polycrystal. Four optical cycles pulse generation at 2.4 μ m. Laser comparison between untreated and HIP-treated polycrystals. We report on a room temperature mode-locked chromium-doped zinc selenide (Cr:ZnSe) laser emitting four optical-cycles pulses in the mid-infrared spectral region which polycrystal has been treated by hot isostatic...

A new strategy that utilizes the interaction between NO and a selenide is reported for fluorescence detection of NO, in which rhodamine B selenolactone serves as a model selenide.

Efficient oxygen-evolution reaction catalysts are required for the cost-effective generation of solar fuels. Metal selenides have been reported as promising oxygen-evolution catalysts; however, their active forms are yet to be elucidated. Here we show that a representative selenide catalyst, nickel selenide, is entirely converted into nickel hydroxide under oxygen-evolution conditions. This res...

The autometallographic retrograde tracing of zinc-containing neurons by intracerebral injection of sodium selenite (Na2SeO3), introduced by Danscher in 1982, has recently been described in more detail. Intracerebral injections of both sodium selenide (Na2Se) and sodium selenite (Na2SeO3) have been successfully used; however, sodium selenite had a rather toxic effect on the injected tissue. In t...