Results 1 to 10 of about 152,441 (269)

Mid-infrared supermirrors with finesse exceeding 400 000

open access: yesNature Communications, 2023
For trace gas sensing and precision spectroscopy, optical cavities incorporating low-loss mirrors are indispensable for path length and optical intensity enhancement.
Gar-Wing Truong   +11 more
doaj   +1 more source

Peculiarities of the formation of silicon oxide films modified with metal nanoparticles [PDF]

open access: yesНанотехнологии в строительстве, 2023
: Introduction. Silicon oxide film coatings have unique properties and are widely used in various industries, including construction. This paper presents the results on the preparation of polyalkylhydroxysiloxane liquid film in the presence of ...
Vyacheslav I. Pavlenko   +4 more
doaj   +1 more source

Localized IR spectroscopy of hemoglobin [PDF]

open access: yesEuropean Biophysics Journal, 2010
IR absorption spectroscopy of hemoglobin was performed using an IR optical parametric oscillator laser and a commercial atomic force microscope in a novel experimental arrangement based on the use of a bottom-up excitation alignment. This experimental approach enables detection of protein samples with a resolution that is much higher than that of ...
Yarrow, Fiona, Rice, James H.
openaire   +5 more sources

Methods of optical spectroscopy in detection of virus in infected samples: A review

open access: yesHeliyon, 2022
Due to the recent COVID-19 pandemic that occurred worldwide since 2020, scientists and researchers have been studying methods to detect the presence of the virus causing COVID-19 disease, namely SARS-CoV-2.
Muhammad Izzuddin Rumaling   +7 more
doaj   +1 more source

Yttrium orthoferrite powder obtained by the mechanochemical synthesis [PDF]

open access: yesScience of Sintering, 2017
Yttrium orthoferrite (YFeO3) powder was prepared by a mechanochemical synthesis from a mixture of Y2O3 and α-Fe2O3 powders in a planetary ball mill for 2.5 h.
Lazarević Zorica Ž.   +6 more
doaj   +1 more source

Applications of infrared spectroscopy in polysaccharide structural analysis: Progress, challenge and perspective

open access: yesFood Chemistry: X, 2021
Polysaccharides are important biomacromolecules with numerous beneficial functions and a wide range of industrial applications. Functions and properties of polysaccharides are closely related to their structural features.
Tao Hong   +3 more
doaj   +1 more source

Synthesis and study of the agrochemical properties of urea salts with nitric and orthophosphoric acid [PDF]

open access: yesE3S Web of Conferences, 2023
The paper presents the results of the synthesis, IR spectroscopic and agrochemical study of the products of adduct formation (internal salts) of urea with nitric and orthophosphoric acids.
Mardonov U.M.   +4 more
doaj   +1 more source

The Bridgman method growth and spectroscopic characterization of calcium fluoride single crystals [PDF]

open access: yesScience of Sintering, 2016
It must be noted that the main objective of this study was to obtain single crystals of calcium fluoride - CaF2, and after that the crystals were characterized with various spectroscopic methods.
Elswie Ibrahim Hana   +6 more
doaj   +1 more source

Ru(III) Complexes and Their Ligands Derived from Salicylaldehyde and Halogenated Anilines: Synthesis, Characterisation, and Antioxidant Activity [PDF]

open access: yesKemija u Industriji, 2023
This work aimed to describe the synthesis and characterisation of two anionic Ru(III) complexes of the general formula Na[RuCl2(N-4-Cl-Ph-salim)2] and Na[RuCl2(N-3-Br-Ph-salim)2, their associated ligands, and determine their antioxidant activity.
Nevzeta Ljubijankić   +5 more
doaj   +1 more source

Detonation Nanodiamonds: A Comparison Study by Photoacoustic, Diffuse Reflectance, and Attenuated Total Reflection FTIR Spectroscopies

open access: yesNanomaterials, 2020
The qualitative analysis of nanodiamonds by FTIR spectrometry as photoacoustic (FTIR–PAS), diffuse-reflectance (DRIFT), and attenuated total reflection (ATR) modalities was evaluated for rapid and nondestructive analysis and comparison of nanodiamonds ...
Dmitry S. Volkov   +2 more
doaj   +1 more source

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