منابع مشابه
Chalcogenide glass microsphere laser.
Laser action has been demonstrated in chalcogenide glass microsphere. A sub millimeter neodymium-doped gallium lanthanum sulphide glass sphere was pumped at 808 nm with a laser diode and single and multimode laser action demonstrated at wavelengths between 1075 and 1086 nm. The gallium lanthanum sulphide family of glass offer higher thermal stability compared to other chalcogenide glasses, and ...
متن کاملThe health promise of Promise Neighborhoods.
The Promise Neighborhoods initiative from the U.S. Department of Education offers grant funding to develop innovative educational and community support programs in distressed communities. Inspired by the success of the Harlem Children's Zone (HCZ), this initiative encourages similarly pioneering approaches to assist low-income children attain academic and social success. An increasing body of e...
متن کاملCovenant, Promise, and the Gift of Time
If we categorize religions according to whether they give greater prominence to time or to space, the role of “promise” marks a religion of covenant as clearly a religion of time. Yet the future is unknowable and can only be present to us as a field of possibilities. How far do these possibilities extend? The question directs us back to the nature of time, a question that became concealed in th...
متن کاملCrystallization Kinetics of Chalcogenide Glasses
Chalcogenide glasses are disordered non crystalline materials which have pronounced tendency their atoms to link together to form link chain. Chalcogenide glasses can be obtained by mixing the chalcogen elements, viz, S, Se and Te with elements of the periodic table such as Ga, In, Si, Ge, Sn, As, Sb and Bi, Ag, Cd, Zn etc. In these glasses, short-range inter-atomic forces are predominantly cov...
متن کاملA highly reactive chalcogenide precursor for the synthesis of metal chalcogenide quantum dots.
Metal chalcogenide semiconductor nanocrystals (NCs) are ideal inorganic materials for solar cells and biomedical labeling. In consideration of the hazard and instability of alkylphosphines, the phosphine-free synthetic route has become one of the most important trends in synthesizing selenide QDs. Here we report a novel phase transfer strategy to prepare phosphine-free chalcogenide precursors. ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Nature Photonics
سال: 2014
ISSN: 1749-4885,1749-4893
DOI: 10.1038/nphoton.2014.92