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Title: Synthesis of and Emission from Nanostructures: Understanding and Control.


Abstract not provided.

Publication Date:
Research Org.:
Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Sponsoring Org.:
USDOE National Nuclear Security Administration (NNSA)
OSTI Identifier:
Report Number(s):
DOE Contract Number:
Resource Type:
Resource Relation:
Conference: Proposed for presentation at the DOE Solid-State Lighting Round Table held September 14, 2016 in Washington, DC.
Country of Publication:
United States

Citation Formats

Coltrin, Michael E. Synthesis of and Emission from Nanostructures: Understanding and Control.. United States: N. p., 2016. Web.
Coltrin, Michael E. Synthesis of and Emission from Nanostructures: Understanding and Control.. United States.
Coltrin, Michael E. 2016. "Synthesis of and Emission from Nanostructures: Understanding and Control.". United States. doi:.
title = {Synthesis of and Emission from Nanostructures: Understanding and Control.},
author = {Coltrin, Michael E.},
abstractNote = {Abstract not provided.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = 2016,
month = 9

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  • The recent advances in the study of light emission from matter induced by synchrotron radiation: X-ray excited optical luminescence (XEOL) in the energy domain and time-resolved X-ray excited optical luminescence (TRXEOL) are described. The development of these element (absorption edge) selective, synchrotron X-ray photons in, optical photons out techniques with time gating coincide with advances in third-generation, insertion device based, synchrotron light sources. Electron bunches circulating in a storage ring emit very bright, widely energy tunable, short light pulses (<100 ps), which are used as the excitation source for investigation of light-emitting materials. Luminescence from silicon nanostructures (porous silicon, siliconmore » nanowires, and Si-CdSe heterostructures) is used to illustrate the applicability of these techniques and their great potential in future applications.« less
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  • The maximum rate at which CNS glutamine (GLN) derived from glutamate (GLU) can be sequestered for synthesis of neurotransmitter GLU and/or ..gamma..-aminobutyric acid (GABA) has been determined in pentobarbital-anesthetized dogs. A total of 57 animals were studied under normal, hypoxic (Pa/sub O2/ greater than or equal to 20 mmHg), or hypercapnic (Pa/sub CO2/ less than or equal to 71 mm Hg) conditions. Thirteen of these were bilaterally vagotomized and carotid body denervated and studied only under normoxic or hypoxic conditions. In 5 animals cerebrospinal fluid GLN transfer rate constant k was measured using /sup 13/N-ammonia tracer. Measured cerebral cortical (CC)more » and medullary (MED) GLN concentrations c are found to vary with GLU metabolic rate r according to c-C/sub m/r/(r+R), where r, the product of k and corresponding tissue GLU concentration, is assumed equal to the maximum GLN metabolic rate via pathways other than for neurotransmitter synthesis. The constants C/sub m/ and R are the predicted maximum GLN concentration and its maximum rate of sequestration for neurotransmitter synthesis, respectively. For both CNS tissue types in all animals, C/sub m/ = 20.9 +- 7.4 (SD) mmoles/kg wet wt(mM) and R = 6.2 +- 2.3 mM/min. These values are consistent with results obtained in anesthetized rats.« less