Results 1 to 10 of about 3,736,137 (310)

A broadband thermal emission spectrum of the ultra-hot Jupiter WASP-18b. [PDF]

open access: yesNature, 2023
The dayside thermal emission spectrum and brightness temperature map of the ultra-hot Jupiter WASP-18b obtained from the NIRISS instrument on the JWST showed water emission features, an atmosphere consistent with solar metallicity, as well as a steep and
Coulombe LP   +75 more
europepmc   +3 more sources

Device for Identifying the UV Emission Spectrum [PDF]

open access: yesSensors, 2022
Nowadays, the disinfection of classrooms, shopping malls, and offices has become an important part of our lives. One of the most effective disinfection methods is ultraviolet (UV) radiation.
Robert Jenő Kovács   +2 more
doaj   +2 more sources

Measurement of the emission spectrum of a semiconductor laser using laser-feedback interferometry. [PDF]

open access: yesSci Rep, 2017
The effects of optical feedback (OF) in lasers have been observed since the early days of laser development. While OF can result in undesirable and unpredictable operation in laser systems, it can also cause measurable perturbations to the operating ...
Keeley J   +11 more
europepmc   +2 more sources

Research Paper: Optical Properties of Algae in Order to Design and Build a Device for Measuring the Amount of Chlorophyll in Water Reservoirs Using the Optical Fluorescence Emission Method [PDF]

open access: yesفیزیک کاربردی ایران, 2023
In this article, we will first get acquainted with the absorption and emission optical properties of algae and types of chlorophylls, and then we will examine the optical setup for measuring the photoluminescence light produced by algae, which is the ...
Ehsan Koushki, Eisa Kohan-Baghkheirati
doaj   +1 more source

Time parameters of optimal emission spectrum registration using millisecond laser pulses [PDF]

open access: yesРадиофизика и электроника, 2020
Subject and Purpose. Emission spectra of copper-silver alloys are examined for various recording durations. The radiation coming to the photodetector of the spectrometer consists of the reflected laser radiation and the line spectra of vapors formed by ...
M.I. Dzubenko   +3 more
doaj   +1 more source

Device Modeling of Quantum Dot–Organic Light Emitting Diodes for High Green Color Purity

open access: yesApplied Sciences, 2021
In this study, the optimal structure for obtaining high green color purity was investigated by modeling quantum dot (QD)–organic light-emitting diodes (OLED).
Byoung-Seong Jeong
doaj   +1 more source

Anharmonicity and the IR Emission Spectrum of Neutral Interstellar PAH Molecules.

open access: yesJournal of Physical Chemistry A, 2022
The characteristics of the CH stretching and out-of-plane bending modes in polycyclic aromatic hydrocarbon molecules are investigated using anharmonic density functional theory (DFT) coupled to a vibrational second-order perturbation treatment taking ...
C. Mackie   +3 more
semanticscholar   +1 more source

Study of the lighting characteristics of Uniel retrofit LED lamps

open access: yesVestnik MGTU, 2023
The paper considers the photometric characteristics of LED retrofit lamps produced by the Russian-Chinese company Uniel: Uniel LED-G45-6W/4000K, Uniel LED-A60-8W/6500K, and Uniel LED-A60-9W/4000K, designed to replace traditional incandescent bulbs ...
Ashryatov A. A.   +2 more
doaj   +1 more source

Metabolomics of Pseudomonas aeruginosa Treated by Atmospheric-Pressure Cold Plasma

open access: yesApplied Sciences, 2021
With increasing drug resistance of Pseudomonas aeruginosa, a new sterilization method is needed. Plasma has been shown to be an effective method of sterilization, but no researchers have studied the effect of plasma on bacterial metabolism. In this paper,
Dehui Xu   +5 more
doaj   +1 more source

Influence of fluorescent pigments on the spectral characteristics of luminous coated fabrics

open access: yesMaterials Research Express, 2021
In recent years, luminous coated fabrics based on SrAl _2 O _4 : Eu ^2+ , Dy ^3+ luminescent materials have attracted more attention. However, due to the single emission color of SrAl _2 O _4 : Eu ^2+ , Dy ^3+ luminescent materials, the application of ...
Jing Li, Yanan Zhu, Mingqiao Ge
doaj   +1 more source

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