Now showing items 51-60 of 127
Nuclear waste disposal—pyrochlore (A2B2O7):(A2B2O7): Nuclear waste form for the immobilization of plutonium and “minor” actinides
(The American Institute of Physics, 2004-06-01)
During the past half-century, the nuclear fuel cycle has generated approximately 1400 metric tons of plutonium and substantial quantities of the “minor” actinides, such as Np, Am, and Cm. The successful disposition of these ...
Particle rearrangements during transitions between local minima of the potential energy landscape of a binary Lennard-Jones liquid
(The American Institute of Physics, 2004-03-01)
The potential energy landscape (PEL) of binary Lennard-Jones (BLJ) mixtures exhibits local minima, or inherent structures (IS), which are organized into metabasins (MBs). We study the particle rearrangements related to ...
A new MEMS-based system for ultra-high-resolution imaging at elevated temperatures
(Wiley Subscription Services, Inc., A Wiley Company, 2009-03)
In recent years, an increasing number of laboratories have been applying in situ heating (and ultimately, gas reaction) techniques in electron microscopy studies of catalysts and other nanophase materials. With the advent ...
Microstructural evolution and nanocrystal formation in Pb+Pb+-implanted ZrSiO4ZrSiO4 single crystals
(The American Institute of Physics, 2003-11-01)
Single crystals of ZrSiO4ZrSiO4 (zircon) with a (110) orientation were implanted with 300 keV Pb+300 keV Pb+ at room temperature to fluences ranging from 10141014 to 1017 ions/cm2.1017 ions/cm2. The damage accumulation and ...
Lateral composition modulation in AlAs/InAs and GaAs/InAs short period superlattices structures: The role of surface segregation
(The American Institute of Physics, 2002-01-01)
The effect of In surface segregation on the microstructure of short period superlattices (SPSs) in two different material systems with nominally equivalent lattice misfit, AlAs/InAs and GaAs/InAs, has been investigated and ...
Structural and mechanical behavior of layered zirconium phosphonate as a distributed phase in polycaprolactone
(Wiley Subscription Services, Inc., A Wiley Company, 2009-10-15)
Mixed-surface octyl/methoxyundecyl Α-zirconium phosphonates (ZrPs) were investigated as distributed nanoscale fillers, in concentrations up to 50% w/w, for the purpose of increasing the elastic modulus and yield strength ...
Structures and visco-elastic properties of potassium tellurite: glass versus melt
(IOP Publishing Ltd, 2006-01-25)
The structure and visco-elastic properties of K2Te4O9 have been examined as a function of temperature, using neutron scattering and Brillouin light scattering, respectively. The neutron scattering data indicate that the ...
Solution-Based Evolution and Enhanced Methanol Oxidation Activity of Monodisperse Platinum–Copper Nanocubes This work was partially supported by the NSF (DMR-0731382 & CHM-0616436), DOE (DE-FG02-07ER86296), and the Research Foundation of SUNY. We thank Dr. Jibao He and Dr. Amar Kumbhar for their assistance with the TEM studies.
(WILEY-VCH Verlag, 2009-05-25)
Shape-controlled catalysis : High-quality Pt–Cu nanocubes with an average size of about 8 14nm (see picture, scale bar=20 14nm) were synthesized from a high-temperature organic solution system in the presence of various ...
X-Ray Microanalysis in the Environmental SEM: A Challenge or a Contradiction?
(Springer-Verlag; Springer-Verlag Wien, 2000-04)
In this paper, the application of X-ray energy dispersive spectroscopy in the environmental scanning electron microscope is reviewed. Various techniques that have been used to remove the effects of the beam spreading in ...
Theoretical investigation of structural, energetic and electronic properties of titanate pyrochlores
(IOP Publishing Ltd, 2007-08-29)
Ab initio total energy calculations using the plane-wave pseudopotential method based on density functional theory were carried out to investigate the structural, energetic and electronic properties of A2Ti2O7 (A = La, ...