Now showing items 11-20 of 855
Brownian dynamics simulations with stiff finitely extensible nonlinear elastic-Fraenkel springs as approximations to rods in bead-rod models
(The American Institute of Physics, 2006-01-28)
A very stiff finitely extensible nonlinear elastic (FENE)-Fraenkel spring is proposed to replace the rigid rod in the bead-rod model. This allows the adoption of a fast predictor-corrector method so that large time steps ...
A soluble string theory of hadrons
(IOP Publishing Ltd, 2003-05-01)
We consider Penrose limits of the Klebanov-Strassler and Maldacena-Núñez holographic duals to N = 1 supersymmetric Yang-Mills. By focusing in on the IR region we obtain exactly solvable string theory models. These ...
Optical properties and structure characterization of sapphire after Ni ion implantation and annealing
(The American Institute of Physics, 2005-10-01)
Implantation of 64 keV64keV Ni ions to sapphire was conducted at room temperature to 1×1017 ions/cm21×1017ions∕cm2 with a current density of 55 or 10 μA/cm210μA∕cm2. Metallic Ni nanoparticles were formed with the 5 μA/cm25μA∕cm2 ...
Self-assembled quantum dots: A study of strain energy and intersubband transitions
(The American Institute of Physics, 2002-11-15)
In this article we examine the strain energy and intersubband optical transitions in self-assembled dots on GaAs and InP substrates. On the GaAs substrate, in addition to the InAs/GaAs dots we examine strain compensated ...
Profiling and modeling of dc nitrogen microplasmas
(The American Institute of Physics, 2003-09-01)
This article explores electric current and field distributions in dc microplasmas, which have distinctive characteristics that are not evident at larger dimensions. These microplasmas, which are powered by coplanar thin-film ...
Holographic gravitational anomalies
(IOP Publishing Ltd, 2006-01-01)
In the AdS/CFT correspondence one encounters theories that are not invariant under diffeomorphisms. In the boundary theory this is a gravitational anomaly, and can arise in 4k+2 dimensions. In the bulk, there can be ...
The microwave spectrum, ab initio analysis, and structure of the fluorobenzene–hydrogen chloride complex
(The American Institute of Physics, 2003-05-22)
The fluorobenzene–hydrogen chloride π-hydrogen-bonded complex has been studied by high resolution microwave spectroscopy and ab initio calculations. Rotational spectra of the C6H5F–H35Cl,C6H5F–H35Cl, C6H5F–H37Cl,C6H5F–H37Cl, ...
Synthesis and magnetic properties of CoPt nanoparticles
(The American Institute of Physics, 2004-06-01)
High magnetocrystalline anisotropy CoPt particles with an average size of 8 nm were synthesized by the superhydride reduction of CoCl2CoCl2 and Pt(acac)2Pt(acac)2 at a high temperature. As-made particles showed a disordered ...
Ion characteristics of laser-produced plasma using a pair of collinear femtosecond laser pulses
(The American Institute of Physics, 2003-07-21)
Femtosecond laser-pulse absorption is studied in silicon ablation plasmas by means of a pair of identical 1016 W/cm21016W/cm2 collinear pulses separated on a picosecond time scale. The second laser-pulse modifies ionic ...
Self-assembled morphologies of monotethered polyhedral oligomeric silsesquioxane nanocubes from computer simulation
(The American Institute of Physics, 2005-11-08)
Self-assembly of functionalized nanoscale building blocks is a promising strategy for “bottom-up” materials design. Recent experiments have demonstrated that the self-assembly of polyhedral oligomeric silsesquioxane (POSS) ...