Results 21 to 30 of about 551,417 (339)
Crystals, 2023 The presented work shows the study of energy transitions in the NIR and visible regions in the system of Bi2O3 and Tm2O3 powders. Mechanisms of upconversion luminescence and NIR luminescence between two Bi3+ and Tm3+ ions at T = 80 K accompanied with ...
Dmitry A. Artamonov +6 more
doaj +1 more source
EPIC spectral observations of variability in earth’s global reflectance [PDF]
, 2018 NASA's Earth Polychromatic Imaging Camera (EPIC) onboard NOAA's Deep Space Climate Observatory (DSCOVR) satellite observes the entire sunlit Earth every 65 to 110 min from the Sun-Earth Lagrangian L1 point.
Knjazihhin, Juri +3 more
core +1 more source
Evaluation of Stem Rust Disease in Wheat Fields by Drone Hyperspectral Imaging
Sensors, 2023 Detecting plant disease severity could help growers and researchers study how the disease impacts cereal crops to make timely decisions. Advanced technology is needed to protect cereals that feed the increasing population using fewer chemicals; this may ...
Jaafar Abdulridha +5 more
doaj +1 more source
Photonics, 2022 We demonstrate an efficient sensing of both gaseous and aqueous analytes utilizing Bloch surface waves (BSWs) and guided waves (GWs) excited on a truncated one-dimensional photonic crystal (1DPhC) composed of six TiO2/SiO2 bilayers with a termination ...
Tomas Fort +4 more
doaj +1 more source
Remote estimation of the diffuse attenuation coefficient in a moderately turbid estuary [PDF]
, 1991 Solutions of the radiative transfer equation are used to derive relationships of water reflectance to the diffuse attenuation coefficient (K) in moderately turbid water (K \u3e 0.5 m−1).
Pennock, Jonathan, Stumpf, Richard P.
core +3 more sources
Remote Sensing, 2021 The majority of cloud applications are created or delivered to provide users with access to system resources or prebuilt processing algorithms for efficient data storage, management, and production.
Kwangseob Kim, Kiwon Lee
doaj +1 more source
Active multilayer mirrors for reflectance tuning at extreme ultraviolet (EUV) wavelengths [PDF]
, 2012 We propose an active multilayer mirror structure for EUV wavelengths which can be adjusted to compensate for reflectance changes. The multilayer structure tunes the reflectance via an integrated piezoelectric layer that can change its dimension due to an
Bayraktar, M. +6 more
core +2 more sources
Mathematics, 2022 This work proposes an optimization tool based on genetic algorithms for the inverse design of photonic crystals. Based on target reflectance, the algorithm generates a population of chromosomes where the genes represent the thickness of a layer of a ...
Cesar Isaza +5 more
doaj +1 more source
Reflectance Hashing for Material Recognition
, 2015 We introduce a novel method for using reflectance to identify materials. Reflectance offers a unique signature of the material but is challenging to measure and use for recognizing materials due to its high-dimensionality.
Dana, Kristin, Nishino, Ko, Zhang, Hang
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Development of a Colorimetric Sensor for Autonomous, Networked, Real-Time Application
Sensors, 2020 This review describes an ongoing effort intended to develop wireless sensor networks for real-time monitoring of airborne targets across a broad area. The goal is to apply the spectrophotometric characteristics of porphyrins and metalloporphyrins in a ...
Brandy J. Johnson +2 more
doaj +1 more source