Facultad de Matemática, Astronomía, Física y Computación: Recent submissions
Now showing items 461-480 of 1232
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Irradiated graphene as a tunable Floquet topological insulator
(2014)In the presence of a circularly polarized mid-infrared radiation graphene develops dynamical band gaps in its quasienergy band structure and becomes a Floquet insulator. Here, we analyze how topologically protected edge ... -
Floquet chiral edge states in graphene
(2014)We report on the emergence of laser-induced chiral edge states in graphene ribbons. Insights on the nature of these Floquet states is provided by an analytical solution which is complemented with numerical simulations of ... -
Methods and results of a search for gravitational waves associated with gamma-ray bursts using the GEO 600, LIGO, and Virgo detectors
(2014)In this paper we report on a search for short-duration gravitational wave bursts in the frequency range 64 Hz–1792 Hz associated with gamma-ray bursts (GRBs), using data from GEO 600 and one of the LIGO or Virgo detectors. ... -
A pair production telescope for medium-energy gamma-ray polarimetry
(2014)We describe the science motivation and development of a pair production telescope for medium-energy (∼5–200 MeV) gamma-ray polarimetry. Our instrument concept, the Advanced Energetic Pair Telescope (AdEPT), takes advantage ... -
Magnetite NPs@C with highly-efficient peroxidase-like catalytic activity as an improved biosensing strategy for selective glucose detection
(2014)This work reports the novel application of carbon-coated magnetite nanoparticles (mNPs@C) as catalytic nanomaterial included in a composite electrode material (mNPs@C/CPE) taking advantages of their intrinsic peroxidase-like ... -
Interfaz visual para un Autocolimador Nikon 6D mediante procesamiento de imágenes con precisión sub-píxel : un caso de estudio
(2014)Este documento tiene el objetivo de describir el potencial de una interfaz visual básica en un Autocolimador del tipo Nikon 6B/6D, para reemplazar al operario en una medición de calidad metrológica. La interfaz visual ... -
Multiterminal conductance of a floquet topological insulator
(2014)We report on simulations of the dc conductance and quantum Hall response of a Floquet topological insulator using Floquet scattering theory. Our results reveal that laser-induced edge states lead to quantum Hall plateaus ... -
Estudio de líquidos confinados en sistemas porosos por RMN a campo bajo
(2021)Los sistemas porosos son parte fundamental de nuestra vida cotidiana y de la industria. En particular, en la industria de la construcción y del petróleo conocer las características de los sistemas porosos es de vital interés ... -
Permutation entropy applied to the characterization of the clinical evolution of epileptic patients under pharmacological treatment
(2014)Different techniques originated in information theory and tools from nonlinear systems theory have been applied to the analysis of electro-physiological time series. Several clinically relevant results have emerged from ... -
Neo y paleoornitología virtual
(2014)La visualización y análisis de los fósiles asistido por computadoras ha revolucionado el estudio de los organismos extintos. Técnicas novedosas permiten caracterizar los restos en tres dimensiones y acceder a detalles sin ... -
Some totally geodesic submanifolds of the nonlinear Grassmannian of a compact symmetric space
(2014)Let M and N be two connected smooth manifolds, where M is compact and oriented and N is Riemannian. Let E be the Fréchet manifold of all embeddings of M in N, endowed with the canonical weak Riemannian metric. Let ∼ be the ... -
Intrinsic angular momentum for radiating spacetimes which agrees with the Komar integral in the axisymmetric case
(2014)Here, we present a new definition of intrinsic angular momentum at future null infinity, based on the charge-integral approach. This definition is suitable for the general case of radiating spacetimes without symmetries, ... -
Virtual laboratory for a first experience in dynamics
(2014)New technologies contribute to the learning process of scientific disciplines. In particular Physics learning may take advantage of these techniques by implementing experimental practices in simulation environments. Our ... -
Generalization of entropy based divergence measures for symbolic sequence analysis
(2014)Entropy based measures have been frequently used in symbolic sequence analysis. A symmetrized and smoothed form of Kullback-Leibler divergence or relative entropy, the Jensen-Shannon divergence (JSD), is of particular ... -
Search for gravitational radiation from intermediate mass black hole binaries in data from the second LIGO-Virgo joint science run
(2014)This paper reports on an unmodeled, all-sky search for gravitational waves from merging intermediate mass black hole binaries (IMBHB). The search was performed on data from the second joint science run of the LIGO and Virgo ... -
Search for gravitational wave ringdowns from perturbed intermediate mass black holes in LIGO-Virgo data from 2005-2010
(2014)We report results from a search for gravitational waves produced by perturbed intermediate mass black holes (IMBH) in data collected by LIGO and Virgo between 2005 and 2010. The search was sensitive to astrophysical sources ... -
Spherical functions of fundamental K-types associated with the n-dimensional sphere
(2014)In this paper, we describe the irreducible spherical functions of fundamental K-types associated with the pair (G, K) = (SO(n + 1), SO(n)) in terms of matrix hypergeometric functions. The output of this description is that ... -
Detección de entidades nombradas en textos de reportes de imágenes médicas
(2021)En este trabajo se abordó el problema de reconocimiento de entidades nombradas sobre texto de reportes de imágenes médicas, empleando distintas alternativas a la solución del problema. La primera de ellas es un clasificador ... -
Structural and magnetic changes induced by electron and ion irradiation on HOPG
(2015)In recent decades, many studies reported magnetism in carbon-based materials. This phenomenon was attributed to structural defects within the sample. Many authors showed an increase of magnetization in HOPG (Highly Oriented ... -
Search for gravitational waves associated with gamma-ray bursts detected by the InterPlanetary Network
(2014)We present the results of a search for gravitational waves associated with 223 γ-ray bursts (GRBs) detected by the InterPlanetary Network (IPN) in 2005-2010 during LIGO´s fifth and sixth science runs and Virgo´s first, ...