Results 21 to 30 of about 236,359 (301)
A Novel 3D Topography Stitching Algorithm Based on Reflectance and Multimap
Applied Sciences, 2023 Surface topography is an efficient tool for the understanding of physical phenomena, especially if multiscale roughness analysis is performed. However, the observable scale range in a topography measured with 3D optical profilometers is quite limited ...
Julie Lemesle +2 more
doaj +1 more source
In Situ Photoacoustic Study of Optical Properties of P-Type (111) Porous Silicon Thin Films
Nanomaterials, 2021 Porous silicon (PSi) on p++-type (111) silicon substrate has been fabricated by electronically etching method in hydrofluoric acid (HF) media from 5 to 110 mA/cm2 of anodizing current density.
Cristian Felipe Ramirez-Gutierrez +4 more
doaj +1 more source
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
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 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
Analysis of petroleum-contaminated soils by diffuse reflectance spectroscopy and sequential ultrasonic solvent extraction-gas chromatography [PDF]
, 2014 In this study, we demonstrate that partial least-squares regression analysis with full cross-validation of spectral reflectance data estimates the amount of polycyclic aromatic hydrocarbons in petroleumcontaminated tropical rainforest soils.
Mouazen, Abdul Mounem +2 more
core +1 more source
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
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
Beilstein Journal of Nanotechnology, 2020 Structural colours have received a lot of attention regarding the reproduction of the vivid colours found in nature. In this study, metal–anodic aluminium oxide (AAO)–Al nanostructures were deposited using a two-step anodization and sputtering process to
Cristina V. Manzano +5 more
doaj +1 more source