Results 11 to 20 of about 6,531 (191)

Dipsticks with Reflectometric Readout of an NIR Dye for Determination of Biogenic Amines

open access: yesChemosensors, 2020
Electrospun nanofibers (ENFs) are remarkable analytical tools for quantitative analysis since they are inexpensive, easily produced in uniform homogenous mats, and provide a high surface area-to-volume ratio.
Sarah N. Mobarez   +4 more
doaj   +1 more source

Space-Borne GNSS-R Ionospheric Delay Error Elimination by Optimal Spatial Filtering

open access: yesSensors, 2020
Global Navigation Satellite System Reflectometry (GNSS-R) technology is a new and promising remote sensing technology, especially satellite-based GNSS-R remote sensing, which has broad application prospects. In this work, the ionospheric impacts on space-
Qiuyang Zhang, Yang Liu, Junming Xia
doaj   +1 more source

Design and Characterization of the Multi-Band SWIR Receiver for the Lunar Flashlight CubeSat Mission

open access: yesRemote Sensing, 2019
Lunar Flashlight (LF) is an innovative National Aeronautics and Space Administration (NASA) CubeSat mission that is dedicated to quantifying and mapping the water ice harbored in the permanently shadowed craters of the lunar South Pole.
Quentin Vinckier   +6 more
doaj   +1 more source

A Spectroscopic Reflectance-Based Low-Cost Thickness Measurement System for Thin Films: Development and Testing

open access: yesSensors, 2023
The requirement for alternatives in roll-to-roll (R2R) processing to expand thin film inspection in wider substrates at lower costs and reduced dimensions, and the need to enable newer control feedback options for these types of processes, represents an ...
Néstor Eduardo Sánchez-Arriaga   +4 more
doaj   +1 more source

Incoherent Optical Frequency-Domain Reflectometry Based on Homodyne Electro-Optic Downconversion for Fiber-Optic Sensor Interrogation

open access: yesSensors, 2019
Fiber-optics sensors using interrogation based on incoherent optical frequency-domain reflectometry (I-OFDR) offer benefits such as the high stability of interference in the radio-frequency (RF) domain and the high SNR due to narrowband RF detection. One
Juan Clement   +3 more
doaj   +1 more source

Remote monitoring of Molten Core-Concrete Interaction experiment with Optical Fibre Sensors & perspectives to improve nuclear safety – DISCOMS project [PDF]

open access: yesEPJ Web of Conferences, 2020
The DISCOMS project (Distributed Sensing for Corium Monitoring and Safety) aimed at providing innovative solutions not requiring local electrical power supplies, for remote monitoring of a severe nuclear accident.
Maurin L.   +9 more
doaj   +1 more source

A self-consistent hybrid model connects empirical and optical models for fast, non-destructive inline characterization of thin, porous silicon layers

open access: yesEPJ Photovoltaics, 2023
Epitaxially-grown wafers on top of sintered porous silicon are a material-efficient wafer production process, that is now being launched into mass production.
Wörnhör Alexandra   +3 more
doaj   +1 more source

Fault Detection in Multi-Core C&I Cable via Machine Learning Based Time-Frequency Domain Reflectometry

open access: yesApplied Sciences, 2019
The integrity and functionality of the control and instrumentation (C&I) cable systems are essential when it comes to ensuring the reliability and safety of system operations, especially in vehicles or power plants. Whenever a fault occurs in a multi-
Chun-Kwon Lee, Seung Jin Chang
doaj   +1 more source

SNR-Based Water Height Retrieval in Rivers: Application to High Amplitude Asymmetric Tides in the Garonne River

open access: yesRemote Sensing, 2021
Signal-to-noise ratio (SNR) time series acquired by a geodetic antenna were analyzed to retrieve water heights during asymmetric tides on a narrow river using the Interference Pattern Technique (IPT) from Global Navigation Satellite System Reflectometry (
Pierre Zeiger   +6 more
doaj   +1 more source

Digital holographic reflectometry

open access: yesOptics Express, 2010
Digital holographic microscopy (DHM) is an interferometric technique that allows real-time imaging of the entire complex optical wavefront (amplitude and phase) reflected by or transmitted through a sample. To our knowledge, only the quantitative phase is exploited to measure topography, assuming homogeneous material sample and a single reflection on ...
Colomb T.   +9 more
openaire   +2 more sources

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