Now showing items 1-10 of 44
Structure of (001)-, (110)-, and (111)-oriented Pb(Fe1/2Nb1/2)O-3 epitaxial thin films on SrRuO3-buffered SrTiO3 substrates
(Cambridge University Press, 2008-03-01)
We have studied the lattice structure of variously oriented lead iron niobate (PFN) thin films with thicknesses of 50 < t < 500 nm that were deposited by pulsed laser deposition (PLD). We have identified that (001)-, (110)-, ...
CMGSDB: integrating heterogeneous Caenorhabditis elegans data sources using compositional data mining
(Oxford Univ Press, 2008-01-01)
Chaotic scattering of two identical point vortex pairs revisited
(American Institute of Physics, 2008-09-01)
A new numerical exploration suggests that the motion of two vortex pairs, with constituent vortices all of the same absolute circulation, displays chaotic scattering regimes. The mechanisms leading to chaotic scattering ...
Tunneling-injection of electrons and holes into quantum dots: A tool for high-power lasing
(AIP Publishing, 2008-06-01)
We study the optical output power of a semiconductor laser, which exploits tunneling-injection of electrons and holes into quantum dots (QDs) from two separate quantum wells. Even if there is out-tunneling leakage of ...
Direct high-resolution transmission electron microscopy observation of tetragonal nanotwins within the monoclinic M(C) phase of Pb(Mg(1/3)Nb(2/3))O(3)-0.35PbTiO(3) crystals
(AIP Publishing, 2008-04-01)
We report on the direct observation of tetragonal nanodomains within an average monoclinic M(C) phase of Pb(Mg(1/3)Nb(2/3))O(3)-0.35PbTiO(3) single crystals by high-resolution transmission electron microscopy. These ...
Two-phonon coupling to the antiferromagnetic phase transition in multiferroic BiFeO(3)
(AIP Publishing, 2008-01-01)
A prominent band centered at similar to 1000-1300 cm(-1) and associated with resonant enhancement of two-phonon Raman scattering is reported in multiferroic BiFeO(3) thin films and single crystals. A strong anomaly in this ...
Thermal transport across nanoscale solid-fluid interfaces
(AIP Publishing, 2008-03-01)
An explanation for the effective thermal resistance R(K) can be based on the impedance to the passage of thermal phonons across an interface. We conjecture that (1) increasing the fluid pressure, and (2) making an interface ...
Molecular simulation of the carbon nanotube growth mode during catalytic synthesis
(AIP Publishing, 2008-06-01)
Catalyzed growth of carbon nanostructures occurs mainly through two modes, i.e., base growth when the metal nanoparticle remains at the bottom of the nanotube, or when it is lifted by the growing carbon nanostructure due ...
Optical Sectioning For Optical Scanning Holography Using Phase-Space Filtering with Wigner Distribution Functions
(Optical Society of America, 2008-10-01)
We propose a novel optical sectioning method for optical scanning holography, which is performed in phase space by using Wigner distribution functions together with the fractional Fourier transform. The principle of ...
Power generation and shunt damping performance of a single crystal lead magnesium niobate-lead zirconate titanate unimorph: Analysis and experiment
(AIP Publishing, 2008-12-01)
This letter investigates the power generation and shunt damping performance of the single crystal piezoelectric ceramic lead magnesium niobate-lead zirconate titanate (PMN-PZT) analytically and experimentally. PMN-PZT is ...