I. M. Pinto
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View article: Influence of steam-rich environments on the high temperature tribological behavior of Inconel 718 for sustainable aviation
Influence of steam-rich environments on the high temperature tribological behavior of Inconel 718 for sustainable aviation Open
The aerospace industry has been looking for solutions to minimize emissions of pollutants into the environment. In this direction, replacing fossil fuels is a promising strategy. The use of hydrogen as a fuel has been shown to be a promisi…
View article: Development of ion-beam sputtered silicon nitride thin films for low-noise mirror coatings of gravitational-wave detectors
Development of ion-beam sputtered silicon nitride thin films for low-noise mirror coatings of gravitational-wave detectors Open
Brownian thermal noise of thin-film coatings is a fundamental limit for high-precision experiments based on optical resonators such as gravitational-wave interferometers. Here we present the results of a research activity aiming to develop…
View article: Comparing apples with apples: A proposed taxonomy for “Community Health Workers” and other front-line health workers for international comparisons
Comparing apples with apples: A proposed taxonomy for “Community Health Workers” and other front-line health workers for international comparisons Open
This paper proposes a taxonomy for Community Health Workers (CHWs) and others engaged in front-line community health activities, encompassing formally-employed workers extending government primary health care (PHC) service delivery as well…
View article: Toward the optimization of SiO2 and TiO2-based metamaterials: Morphological, Structural, and Optical characterization
Toward the optimization of SiO2 and TiO2-based metamaterials: Morphological, Structural, and Optical characterization Open
In recent years, metamaterials have emerged as a crucial technology for designing sub-wavelength thick optical components capable of performing various optical functions. Among the others, these nanostructures could be employed to tune the…
View article: Optimizing nanostructure deposition process for optical applications
Optimizing nanostructure deposition process for optical applications Open
In many physics and engineering applications requiring exceptional precision, the presence of highly reflective coatings with low thermal noise is of utmost significance. These applications include high‐resolution spectroscopy, optical ato…
View article: Role of substrate and TiO<sub>2</sub> content in TiO<sub>2</sub>:Ta<sub>2</sub>O<sub>5</sub> coatings for gravitational wave detectors
Role of substrate and TiO<sub>2</sub> content in TiO<sub>2</sub>:Ta<sub>2</sub>O<sub>5</sub> coatings for gravitational wave detectors Open
Gravitational wave detectors (GWDs) are designed to detect the elusive signals produced by spacetime ripples, the GWs. The key to improving GWD sensitivity relies on the reduction of the thermal noise introduced by the mirrors. The high re…
View article: Estimating the Chirp Mass of Eccentric Inspiraling Binary Systems from Time-Frequency Representations of their Gravitational Radiation
Estimating the Chirp Mass of Eccentric Inspiraling Binary Systems from Time-Frequency Representations of their Gravitational Radiation Open
Using the simplest yet meaningful Peters-Mathews model describing the orbital damping of a compact binary system under the emission of gravitatonal radiation, we show that the chirp-mass of an eccentric inspiraling binary, and its (Kepleri…
View article: Emergence and Evolution of Crystallization in TiO2 Thin Films: A Structural and Morphological Study
Emergence and Evolution of Crystallization in TiO2 Thin Films: A Structural and Morphological Study Open
Among all transition metal oxides, titanium dioxide (TiO2) is one of the most intensively investigated materials due to its large range of applications, both in the amorphous and crystalline forms. We have produced amorphous TiO2 thin film…
View article: Multimaterial Coatings Design via Exhaustive Search for Gravitational Wave Detectors
Multimaterial Coatings Design via Exhaustive Search for Gravitational Wave Detectors Open
In this work we analyze coatings for gravitational wave detector mirrors obtained by sequencing dielectric layers, with fixed thicknesses, made of three different materials (ternary sequences). Two materials are chosen non-dissipative, i.e…
View article: Triangular Norms for Gravitational Wave Data Fusion
Triangular Norms for Gravitational Wave Data Fusion Open
The first direct observation of gravitational waves of cosmic origin was a milestone in fundamental research, paving the way to gravitational wave and multimessenger astronomy. In this paper, we discuss the application of t-norms as a poss…
View article: The status of KAGRA underground cryogenic gravitational wave telescope
The status of KAGRA underground cryogenic gravitational wave telescope Open
KAGRA is a 3-km interferometric gravitational wave telescope located in the Kamioka mine in Japan. It is the first km-class gravitational wave telescope constructed underground to reduce seismic noise, and the first km-class telescope to u…
View article: Interferometric SAR Phase Denoising Using Proximity-Based K-SVD Technique
Interferometric SAR Phase Denoising Using Proximity-Based K-SVD Technique Open
This paper addresses the problem of interferometric noise reduction in Synthetic Aperture Radar (SAR) interferometry based on sparse and redundant representations over a trained dictionary. The idea is to use a Proximity-based K-SVD (ProK-…
View article: A Multi-Step Approach to Assessing LIGO Test Mass Coatings
A Multi-Step Approach to Assessing LIGO Test Mass Coatings Open
Photographs of the LIGO Gravitational Wave detector mirrors illuminated by the standing beam were analyzed with an astronomical software tool designed to identify stars within images, which extracted hundreds of thousands of point-like sca…
View article: Baffle Diffraction in Interferometric Detectors of Gravitational Waves
Baffle Diffraction in Interferometric Detectors of Gravitational Waves Open
This paper presents an efficient highfrequency analysis framework for studying diffraction occurring at irises, or baffles, in the arms of a Fabry-Perot optical interferometer, relevant to the design and operation of interferometric detect…
View article: Compressed Sensing for Time-Frequency Gravitational Wave Data Analysis
Compressed Sensing for Time-Frequency Gravitational Wave Data Analysis Open
The potential of compressed sensing for obtaining sparse time-frequency representations for gravitational wave data analysis is illustrated by comparison with existing methods, as regards i) shedding light on the fine structure of noise tr…
View article: Measurement Of Acoustic Loss In Nano-Layered Coating Developed For Thermal Noise Reduction
Measurement Of Acoustic Loss In Nano-Layered Coating Developed For Thermal Noise Reduction Open
Structural relaxation processes in optical coatings represent a fundamental limit to the sensitivity of gravitational waves detectors, MEMS, optical metrology and entangled state experiments. To face this problem, many research lines are n…