Browsing by Subject "PHYSICS AND ASTRONOMY"
Now showing items 120 of 50

A chemically inert Rashba split interface electronic structure of C60, FeOEP and PTCDA on BiAg2/Ag(111) substrates
(IOP Publishing, 20140404)The fields of organic electronics and spintronics have the potential to revolutionize the electronics industry. Finding the right materials that can retain their electrical and spin properties when combined is a technological ... 
A formalism based on moments for classical and quantum cosmology
(IOP Publishing LTD, 2015)We compare the classical and quantum description of systems with one degree of freedom with an effective formalism based on statistical moments. Within this formalism the similarities and differences between the classical ... 
Ab initio molecular dynamics on the electronic Boltzmann equilibrium distribution
(IOP Publishing, 20100831)We prove that for a combined system of classical and quantum particles, it is possible to describe a dynamics for the classical particles that incorporates in a natural way the Boltzmann equilibrium population for the ... 
Acoustic plasmons in extrinsic freestanding graphene
(IOP Publishing, 20140804)An acoustic plasmon is predicted to occur, in addition to the conventional twodimensional (2D) plasmon, as the collective motion of a system of two types of electronic carriers coexisting in the same 2D band of extrinsic ... 
Addressing students' difficulties with Faraday's law: A guided problem solving approach
(Amer Physical, 20140630)In traditional teaching, the fundamental concepts of electromagnetic induction are usually quickly analyzed, spending most of the time solving problems in a more or less rote manner. However, physics education research has ... 
Analysis of multivariate stochastic signals sampled by online particle analyzers: Application to the quantitative assessment of occupational exposure to NOAA in multisource industrial scenarios (MSIS)
(IOP Publishing, 2015)In multisource industrial scenarios (MSIS) coexist NOAA generating activities with other productive sources of airborne particles, such as parallel processes of manufacturing or electrical and diesel machinery. A distinctive ... 
Application of Entropy and Fractal Dimension Analyses to the Pattern Recognition of Contaminated Fish Responses in Aquaculture
(MDPI, 201411)The objective of the work was to develop a noninvasive methodology for image acquisition, processing and nonlinear trajectory analysis of the collective fish response to a stochastic event. Object detection and motion ... 
Approximate Best Proximity Points of Cyclic Selfmaps in Metric Spaces and Cyclic Asymptotic Regularity
(IOP Publishing, 2015)This manuscript investigates some relations and properties between 2cyclic selfmappings. In particular, a formal development is given to link some concepts and their basic related properties like those of approximate ... 
Black Holes, Cosmological Solutions, Future Singularities, and Their Thermodynamical Properties in Modified Gravity Theorie
(MDPI, 20120918)Along this review, we focus on the study of several properties of modified gravity theories, in particular on blackhole solutions and its comparison with those solutions in General Relativity, and on Friedmann–Lemaˆıtr ... 
Calibrating Analytical Models for Semilocal Strings
(IOP Publishing, 2015)In this work we calibrate two different analytic models of semilocal strings by constraining the values of their free parameters. In order to do so, we use data obtained from the largest and most accurate field theory ... 
Computational study of the vortex path variation with the VG height
(IOP Publishing, 2014)An extensive range of conventional, vanetype, passive vortex generators (VGs) are in use for successful applications of flow separation control. In most cases, the VG height is designed with the same thickness as the local ... 
Cosmological constrains on fast transition Unified Dark Matter models
(IOP Publishing, 2015)In this work we show the results obtained applying a Unified Dark Matter (UDM) model with a fast transition to a set of cosmological data. Two different functions to model the transition are tested, and the feasibility of ... 
CrankNicholson method for rate equations in powder random lasers
(IOP Publishing, 2015)In this work, we show the resolution of the rate equations in powder random lasers by using the CrankNicholson finite difference method. Light propagation in our powders is described by the model of light diffusion. The ... 
Defect and structural imperfection effects on the electronic properties of BiTeI surfaces
(IOP Publishing, 20140724)The surface electronic structure of the narrowgap seminconductor BiTeI exhibits a large Rashbasplitting which strongly depends on the surface termination. Here we report on a detailed investigation of the surface morphology ... 
Defects structure characterization of NiMnGa alloys by PALS
(IOP Publishing, 2013)We have studied the behaviour of defects in offstoichiometric NiMnGa ferromagnetic shape memory alloys by means of positron lifetime spectroscopy. The measurements presented in this work have been performed in six ternary ... 
Digital Quantum Simulation of Spin Models with Circuit Quantum Electrodynamics
(American Physical Society, 20150617)Systems of interacting quantum spins show a rich spectrum of quantum phases and display interesting manybody dynamics. Computing characteristics of even small systems on conventional computers poses significant challenges. ... 
Double layers in gravity theories
(IOP Publishing, 2015)Gravitational double layers, unlike their classical electromagnetic counterparts, are thought to be forbidden in gravity theories. It has been recently shown, however, that they are feasible in, for instance, gravity ... 
Dualpath methods for propagating quantum microwaves
(IOP Publishing, 201401)We study quantum state tomography, entanglement detection and channel noise reconstruction of propagating quantum microwaves via dualpath methods. The presented schemes make use of the following key elements: propagation ... 
Effect of surface plasmon resonance in TiO2/Au thin films on the fluorescence of selfassembled CdTe QDs structure
(IOP Publishing, 2015)The exceptional properties of localised surface plasmons (LSPs), such as local field enhancement and confinement effects, resonant behavior, make them ideal candidates to control the emission of luminescent nanoparticles. ... 
Electronic properties of graphene grain boundaries
(IOP Publishing, 20140808)Grain boundaries and defect lines in graphene are intensively studied for their novel electronic and magnetic properties. However, there is not a complete comprehension of the appearance of localized states along these ...