Now showing items 31-40 of 177
Room-temperature ferromagnetic Co-doped ZnO nanoneedle array prepared by pulsed laser deposition
(The American Institute of Physics, 2005-10-24)
A Co-doped ZnO nanoneedle array with room-temperature ferromagnetic properties was successfully fabricated by pulsed laser deposition (PLD) method. Detailed nanostructures were studied by transmission electron microscopy ...
A hierarchical algorithm for predicting the linear viscoelastic properties of polymer melts with long-chain branching
(Springer-Verlag, 2005-01)
The “hierarchical model” proposed earlier [Larson in Macromolecules 34:4556–4571, 2001] is herein modified by inclusion of early time fluctuations and other refinements drawn from the theories of Milner and McLeish for ...
Superlattice in an interminiband resonance ac field
(The American Institute of Physics, 2005-08-15)
We discuss the properties of miniband electrons in a superlattice illuminated by a strong electromagnetic field. If the ac field is in resonance with a two-miniband superlattice, gaps in the quasienergy spectrum appear. ...
Closed and Open Conformal Field Theories and Their Anomalies
(Springer-Verlag; Springer-Verlag Berlin Heidelberg, 2005-02)
We describe a formalism allowing a completely mathematical rigorous approach to closed and open conformal field theories with general anomaly. We also propose a way of formalizing modular functors with positive and negative ...
Nanoimprinted strain-controlled elastomeric gratings for optical wavelength tuning
(The American Institute of Physics, 2005-04-18)
We demonstrate strain-controlled gratings made of an organic elastomer, polydimethylsiloxane (PDMS), which can achieve optical wavelength tuning by varying their spatial periods. The whole device structure presented in ...
Cortical microstimulation in auditory cortex of rat elicits best-frequency dependent behaviors
(IOP Publishing Ltd, 2005-06-01)
Electrical activation of the auditory cortex has been shown to elicit an auditory sensation; however, the perceptual effects of auditory cortical microstimulation delivered through penetrating microelectrodes have not been ...
Entropy of thermally excited black rings
(IOP Publishing Ltd, 2005-10-01)
A string theory description of near extremal black rings is proposed. The entropy is computed and the thermodynamic properties are derived for a large family of black rings that have not yet been constructed in ...
TECHNICAL NOTE: Theoretical considerations for counting nucleic acid molecules in microdevices
(IOP Publishing Ltd, 2005-01-01)
We describe the theoretical design of a microchip for the amplification, detection and counting of individual nucleic acid molecules in an ensemble of non-specific molecules. The device permits access to individual molecules ...
Towards supergravity duals of chiral symmetry breaking in Sasaki-Einstein cascading quiver theories
(IOP Publishing Ltd, 2005-07-01)
We construct a first order deformation of the complex structure of the cone over Sasaki-Einstein spaces Yp,q and check supersymmetry explicitly. This space is a central element in the holographic dual of chiral symmetry ...
Structural transformation and localization during simulated nanoindentation of a noncrystalline metal film
(The American Institute of Physics, 2005-01-03)
A simulation study demonstrates that localization can arise as the result of the breakdown of stable quasicrystal-like atomic configurations. Samples produced at elevated quench rates and via more energetic processes contain ...