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Exploiting the Nonlinear Dynamics of Optically Injected Semiconductor Lasers for Optical Sensing
(2019-06-01)
Article
Open AccessOptically injected semiconductor lasers are known to display a rich variety of dynamic behaviours, including the emission of excitable pulses, and of rare giant pulses (often referred to as optical rogue waves). Here, we ... -
Complex temporal patterns processing by a neural mass model of a cortical column
(2019-04-06)
Article
Restricted access - publisher's policyIt is well known that neuronal networks are capable of transmitting complex spatiotemporal information in the form of precise sequences of neuronal discharges characterized by recurrent patterns. At the same time, the ... -
All-dielectric self-cloaked structures
(2018-03-17)
Article
Open AccessA general procedure to design objects that are intrinsically invisible (without the necessity of an external cloak) has not been demonstrated so far. Here we propose a flexible method to design such self-cloaked objects ... -
Angular filtering by Bragg photonic microstructures fabricated by physical vapour deposition
(2019-07-01)
Article
Restricted access - publisher's policyWe propose and experimentally demonstrate spatial filtering by photonic crystals in a Bragg configuration. Compared to the Laue configuration, where spatial filtering was already demonstrated before, the Bragg configuration ... -
Uncovering temporal regularity in atmospheric dynamics through Hilbert phase analysis
(Institute of Physics (IOP), 2019-05-03)
Article
Open AccessUncovering meaningful regularities in complex oscillatory signals is a challenging problem with applications across a wide range of disciplines.Here, we present a novel approach, based on the Hilbert transform (HT).We show ... -
Topological data analysis of high resolution diabetic retinopathy images
(Public Library of Science (PLOS), 2019-05-24)
Article
Open AccessDiabetic retinopathy is a complication of diabetes that produces changes in the blood vessel structure in the retina, which can cause severe vision problems and even blindness. In this paper, we demonstrate that by identifying ... -
Fully Noncontact Hybrid NDT for 3D Defect Reconstruction Using SAFT Algorithm and 2D Apodization Window
(Multidisciplinary Digital Publishing Institute (MDPI), 2019-05-08)
Article
Open AccessNondestructive testing of metallic objects that may contain embedded defects of different sizes is an important application in many industrial branches for quality control. Most of these techniques allow defect detection ... -
Assessing diversity in multiplex networks
(Nature, 2019-03-14)
Article
Open AccessDiversity, understood as the variety of different elements or configurations that an extensive system has, is a crucial property that allows maintaining the system’s functionality in a changing environment, where failures, ... -
Speckle reduction in double-pass retinal images
(Nature, 2019-03-14)
Article
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All-solid-state VUV frequency comb at 160 nm using high-harmonic generation in nonlinear femtosecond enhancement cavity
(2019-02-21)
Article
Open AccessWe realized a solid-state-based vacuum ultraviolet frequency comb by harmonics generation in an external enhancement cavity. Optical conversions were so far reported by only using gaseous media. We present a theory that ... -
Quantifying the degree of locking in weakly forced stochastic systems
(American Institute of Physics (AIP), 2019-02-12)
Article
Open AccessControlling an stochastic nonlinear system with a small amplitude signal is a fundamental problem with many practical applications. Quantifying locking is challenging, and current methods, such as spectral or correlation ... -
Unsupervised feature extraction of anterior chamber OCT images for ordering and classification
(Nature, 2019-02-04)
Article
Open AccessWe propose an image processing method for ordering anterior chamber optical coherence tomography (OCT) images in a fully unsupervised manner. The method consists of three steps: Firstly we preprocess the images (filtering ...
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