Pub Date : 2023-01-01DOI: 10.21883/os.2023.06.55917.109-23
Иг. С. Голяк, Павел Вячеславович Бережанский, А Ю Седова, Т.А. Гутырчик, О. А. Небритова, А. Н. Морозов, Д.Р. Анфимов, И. Б. Винтайкин, А. А. Коноплева, П.П. Дёмкин, И. Л. Фуфурин
The infrared spectra of the air exhaled by several groups of volunteers were studied: those suffering from type 1 diabetes, bronchial asthma, and pneumonia. To record infrared spectra, a tunable quantum-cascade laser (QCL) was used. QCL emits in the wavelength range from 5.3 to 12.8 μm in a pulsed mode with a pulse width of 50 ns, a power of up to 150 mW, and a tuning step of 1 cm-1. The laser is optically coupled to an astigmatic gas cell of the Herriot type with an optical path length of 76 m. A difference was found in the intensity of selective lines of biomarker molecules in the spectra of exhaled air of healthy volunteers compared to similar indicators of volunteers suffering from a certain disease. For an example of methods such as the support vector machine (SVM), the k-nearest neighbors (k-NN) and the random forest algorithm (RandomForest), the possibility of classifying volunteers by the infrared spectra of their exhaled air is shown. The use of dimensionality reduction methods (PCA and t-SNE) made it possible to increase the accuracy of disease classification up to 98% in terms of the accuracy metric.
{"title":"Применение машинного обучения для диагностики некоторых социально значимых заболеваний по выдыхаемому человеком воздуху методом инфракрасной лазерной спектроскопии","authors":"Иг. С. Голяк, Павел Вячеславович Бережанский, А Ю Седова, Т.А. Гутырчик, О. А. Небритова, А. Н. Морозов, Д.Р. Анфимов, И. Б. Винтайкин, А. А. Коноплева, П.П. Дёмкин, И. Л. Фуфурин","doi":"10.21883/os.2023.06.55917.109-23","DOIUrl":"https://doi.org/10.21883/os.2023.06.55917.109-23","url":null,"abstract":"The infrared spectra of the air exhaled by several groups of volunteers were studied: those suffering from type 1 diabetes, bronchial asthma, and pneumonia. To record infrared spectra, a tunable quantum-cascade laser (QCL) was used. QCL emits in the wavelength range from 5.3 to 12.8 μm in a pulsed mode with a pulse width of 50 ns, a power of up to 150 mW, and a tuning step of 1 cm-1. The laser is optically coupled to an astigmatic gas cell of the Herriot type with an optical path length of 76 m. A difference was found in the intensity of selective lines of biomarker molecules in the spectra of exhaled air of healthy volunteers compared to similar indicators of volunteers suffering from a certain disease. For an example of methods such as the support vector machine (SVM), the k-nearest neighbors (k-NN) and the random forest algorithm (RandomForest), the possibility of classifying volunteers by the infrared spectra of their exhaled air is shown. The use of dimensionality reduction methods (PCA and t-SNE) made it possible to increase the accuracy of disease classification up to 98% in terms of the accuracy metric.","PeriodicalId":24059,"journal":{"name":"Оптика и спектроскопия","volume":"11 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83484009","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-01-01DOI: 10.21883/os.2023.06.55905.101-23
Павел Евгеньевич Тимченко, О.О. Фролов, Елена Владимировна Тимченко, Д. А. Долгушкин, А. Н. Николаенко, Лариса Теодоровна Волова, Виктор Вячеславович Иванов, Р.Т. Самигуллин
Представлены результаты исследования поверхности образцов имплантов с разными типами покрытий с помощью спектроскопии комбинационного рассеяния. Исследованы образцы на основе титана ВТ6, изготовленные по технологии селективного лазерного спекания с разными покрытиями (без покрытий, с покрытием гидроксиапатита кальция, с комбинированным покрытием --- гидроксиапатитом кальция, на который было нанесено покрытие, содержащее антибактериальный препарат, содержащее антибактериальный препарат и образцы с покрытием, содержащим хитозан). Установлены спектральные различия поверхности образцов имплантов с разными типами их покрытий на основе титана ВТ6. Это позволит исследовать динамику резорбции данных покрытий с помощью спектроскопии комбинационного рассеяния при выполнении доклинических исследований у животных. Ключевые слова: спектроскопия комбинационного рассеяния, поверхность, сплав титана, растровая электронная микроскопия.
{"title":"Спектроскопия комбинационного рассеяния для оценки поверхности сплавов титана ВТ6","authors":"Павел Евгеньевич Тимченко, О.О. Фролов, Елена Владимировна Тимченко, Д. А. Долгушкин, А. Н. Николаенко, Лариса Теодоровна Волова, Виктор Вячеславович Иванов, Р.Т. Самигуллин","doi":"10.21883/os.2023.06.55905.101-23","DOIUrl":"https://doi.org/10.21883/os.2023.06.55905.101-23","url":null,"abstract":"Представлены результаты исследования поверхности образцов имплантов с разными типами покрытий с помощью спектроскопии комбинационного рассеяния. Исследованы образцы на основе титана ВТ6, изготовленные по технологии селективного лазерного спекания с разными покрытиями (без покрытий, с покрытием гидроксиапатита кальция, с комбинированным покрытием --- гидроксиапатитом кальция, на который было нанесено покрытие, содержащее антибактериальный препарат, содержащее антибактериальный препарат и образцы с покрытием, содержащим хитозан). Установлены спектральные различия поверхности образцов имплантов с разными типами их покрытий на основе титана ВТ6. Это позволит исследовать динамику резорбции данных покрытий с помощью спектроскопии комбинационного рассеяния при выполнении доклинических исследований у животных. Ключевые слова: спектроскопия комбинационного рассеяния, поверхность, сплав титана, растровая электронная микроскопия.","PeriodicalId":24059,"journal":{"name":"Оптика и спектроскопия","volume":"88 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85898342","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-01-01DOI: 10.21883/os.2023.06.55909.115-23
М. М. Слепченков, Д.А. Колосов, О. Е. Глухова
In this paper, we consider two new atomic models of van der Waals vertical heterostructures of metal-semiconductor type based on a 2D buckled triangular borophene with metallic conductivity and graphene-like 2D monolayers of gallium nitride GaN and zinc oxide ZnO, which are semiconductors. Using the density functional theory, the equilibrium configurations of supercells of the borophene/GaN and borophene/ZnO heterostructures are found and their thermodynamic stability at room temperature is shown. Within the framework of the nonstationary first-order perturbation theory, the optical characteristics (complex permittivity and absorption coefficient) are calculated in the electromagnetic radiation wavelength range of 0.2–2 μm. The presence of anisotropy in the optical properties of the borophene/GaN and borophene/ZnO heterostructures is established when the direction of light polarization is chosen. This is due to different manifestations of the optical properties of the constituent monolayers of the heterostructure. When light is polarized in the direction of the zigzag edge of the GaN/ZnO (along the X axis), the optical properties of GaN and ZnO semiconductor monolayers are predominantly manifested. When light is polarized in the direction of the zigzag edge of the borophene monolayer (along the Y axis), the optical properties of borophene manifest themselves. A synergistic effect has been found from the combination of borophene and ZnO monolayers in the composition of the borophene/ZnO vertical heterostructure, which manifests itself in the form of a section of the increasing plot of the real and imaginary parts of the complex permittivity in the infrared region for both directions of light polarization. It is shown that the difference in the values of the absorption coefficient of the borophene/GaN heterostructure between the UV and visible ranges can reach ~ 7 times, between the UV and near IR ranges - ~ 14 times, and for the borophene/ZnO heterostructure this difference can be up to ~ 6 times and up to ~18 times, respectively. It is predicted that borophene/GaN and borophene/ZnO heterostructures can be used to create UV radiation detectors.
{"title":"Оптические свойства ван-дер-ваальсовых гетероструктур на основе 2D-монослоев борофена, нитрида галлия и оксида цинка","authors":"М. М. Слепченков, Д.А. Колосов, О. Е. Глухова","doi":"10.21883/os.2023.06.55909.115-23","DOIUrl":"https://doi.org/10.21883/os.2023.06.55909.115-23","url":null,"abstract":"In this paper, we consider two new atomic models of van der Waals vertical heterostructures of metal-semiconductor type based on a 2D buckled triangular borophene with metallic conductivity and graphene-like 2D monolayers of gallium nitride GaN and zinc oxide ZnO, which are semiconductors. Using the density functional theory, the equilibrium configurations of supercells of the borophene/GaN and borophene/ZnO heterostructures are found and their thermodynamic stability at room temperature is shown. Within the framework of the nonstationary first-order perturbation theory, the optical characteristics (complex permittivity and absorption coefficient) are calculated in the electromagnetic radiation wavelength range of 0.2–2 μm. The presence of anisotropy in the optical properties of the borophene/GaN and borophene/ZnO heterostructures is established when the direction of light polarization is chosen. This is due to different manifestations of the optical properties of the constituent monolayers of the heterostructure. When light is polarized in the direction of the zigzag edge of the GaN/ZnO (along the X axis), the optical properties of GaN and ZnO semiconductor monolayers are predominantly manifested. When light is polarized in the direction of the zigzag edge of the borophene monolayer (along the Y axis), the optical properties of borophene manifest themselves. A synergistic effect has been found from the combination of borophene and ZnO monolayers in the composition of the borophene/ZnO vertical heterostructure, which manifests itself in the form of a section of the increasing plot of the real and imaginary parts of the complex permittivity in the infrared region for both directions of light polarization. It is shown that the difference in the values of the absorption coefficient of the borophene/GaN heterostructure between the UV and visible ranges can reach ~ 7 times, between the UV and near IR ranges - ~ 14 times, and for the borophene/ZnO heterostructure this difference can be up to ~ 6 times and up to ~18 times, respectively. It is predicted that borophene/GaN and borophene/ZnO heterostructures can be used to create UV radiation detectors.","PeriodicalId":24059,"journal":{"name":"Оптика и спектроскопия","volume":"70 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83199054","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-01-01DOI: 10.21883/os.2023.07.56139.5120-23
Д.Р. Дададжанов, А.В. Палехова, Г. Алексан, М. А. Баранов, Н. А. Маслова
A relatively simple physical method has been proposed for fabrication of stable oligomers of silver nanoparticles, preliminarily obtained by pulsed laser ablation of a metal target in a liquid. Oligomers of silver nanoparticles are formed in an aqueous solution after prolonged centrifugation at 18000 g and subsequent ultrasonification of the initial colloidal solution of spherical nanoparticles obtained by laser ablation. The plasmon resonance in oligomers is shifted relative to the plasmon resonance in spherical nanoparticles to the long wavelength region by 140 nm.
{"title":"Формирование олигомеров серебряных наночастиц, полученных методом лазерной абляции в жидкости, путем последовательного центрифугирования и ультрасонификации: управляемый длинноволновый сдвиг плазмонного резонанса в интересах биомедицинских применений","authors":"Д.Р. Дададжанов, А.В. Палехова, Г. Алексан, М. А. Баранов, Н. А. Маслова","doi":"10.21883/os.2023.07.56139.5120-23","DOIUrl":"https://doi.org/10.21883/os.2023.07.56139.5120-23","url":null,"abstract":"A relatively simple physical method has been proposed for fabrication of stable oligomers of silver nanoparticles, preliminarily obtained by pulsed laser ablation of a metal target in a liquid. Oligomers of silver nanoparticles are formed in an aqueous solution after prolonged centrifugation at 18000 g and subsequent ultrasonification of the initial colloidal solution of spherical nanoparticles obtained by laser ablation. The plasmon resonance in oligomers is shifted relative to the plasmon resonance in spherical nanoparticles to the long wavelength region by 140 nm.","PeriodicalId":24059,"journal":{"name":"Оптика и спектроскопия","volume":"11 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88157830","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-01-01DOI: 10.21883/os.2023.01.54536.3165-22
Р.Дж. Касумова, Н.В. Керимли, Г А Сафарова
In the study of stimulated Brillouin scattering (SBS) in the constant intensity approximation, the spatial behavior of the intensity of the Stokes scattering wave in a medium was investigated. It was found that as a result of nonlinear interaction of waves, the period of spatial beats changes. The intensity of the Stokes scattering component is considered as a function of the phase mismatch, pump and acoustic wave intensities. It is found that the efficiency of the scattering of the backward Stokes wave is affected by the total length of the nonlinear medium. According to the analytical expressions obtained in this work, the choice of the optimal parameters of the problem makes it possible to implement the regime of efficient generation of the Stokes scattering component in SBS. The process of generation and amplification of the Stokes scattering component is compared with experiment. By varying the pump intensity, one can control and manipulate the intensity of the output radiation of the Stokes component.
{"title":"Фазовые эффекты при вынужденном рассеянии Мандельштама-Бриллюэна","authors":"Р.Дж. Касумова, Н.В. Керимли, Г А Сафарова","doi":"10.21883/os.2023.01.54536.3165-22","DOIUrl":"https://doi.org/10.21883/os.2023.01.54536.3165-22","url":null,"abstract":"In the study of stimulated Brillouin scattering (SBS) in the constant intensity approximation, the spatial behavior of the intensity of the Stokes scattering wave in a medium was investigated. It was found that as a result of nonlinear interaction of waves, the period of spatial beats changes. The intensity of the Stokes scattering component is considered as a function of the phase mismatch, pump and acoustic wave intensities. It is found that the efficiency of the scattering of the backward Stokes wave is affected by the total length of the nonlinear medium. According to the analytical expressions obtained in this work, the choice of the optimal parameters of the problem makes it possible to implement the regime of efficient generation of the Stokes scattering component in SBS. The process of generation and amplification of the Stokes scattering component is compared with experiment. By varying the pump intensity, one can control and manipulate the intensity of the output radiation of the Stokes component.","PeriodicalId":24059,"journal":{"name":"Оптика и спектроскопия","volume":"12 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90412778","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-01-01DOI: 10.21883/os.2023.03.55395.4525-23
The possibility of detection of methane using fiber-optical sensor with ZnO-SnO2-Fe2O3 photocatalyst was demonstrated. Photocatalytic composite sensor element was prepared by non-isothermal polymer-salt method from solutions of inorganic metal salts and polyvinylpyrrolidone. Optical detection is carrying out by Bragg diffraction grating of fiber-optical sensor at the temperature variations during photocatalytic methane oxidation.
{"title":"Методика оптического детектирования метана волоконно-оптическом сенсором при применении фотокаталитического нанокомпозита ZnO-SnO-=SUB=-2-=/SUB=--Fe-=SUB=-2-=/SUB=-O-=SUB=-3-=/SUB=-","authors":"","doi":"10.21883/os.2023.03.55395.4525-23","DOIUrl":"https://doi.org/10.21883/os.2023.03.55395.4525-23","url":null,"abstract":"The possibility of detection of methane using fiber-optical sensor with ZnO-SnO2-Fe2O3 photocatalyst was demonstrated. Photocatalytic composite sensor element was prepared by non-isothermal polymer-salt method from solutions of inorganic metal salts and polyvinylpyrrolidone. Optical detection is carrying out by Bragg diffraction grating of fiber-optical sensor at the temperature variations during photocatalytic methane oxidation.","PeriodicalId":24059,"journal":{"name":"Оптика и спектроскопия","volume":"31 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75606926","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-01-01DOI: 10.21883/os.2023.02.55005.15-23
М.П. Смаев, П. И. Лазаренко, М.Е. Федянина, И.А. Будаговский, А. Г. Рааб, И.В. Сагунова, С. А. Козюхин
Phase change memory materials due to their high susceptibility to low-intensity light fields are extremely attractive for active microphotonics and integrated optics devices. As a result of fast phase switching, these materials change the refractive index in a wide spectral range, which has found application in information storage systems. In this work, we studied the formation of two-phase periodic structures consisting of alternating lines of amorphous and crystalline phases on the surface of thin-film Ge2Sb2Te5 phase-change memory materials exposed to ultrashort laser pulses. Periodic structures were formed at a wavelength of 1030 nm at different durations and repetition rates of light pulses. It has been established that the ordering of two-phase structures obtained at a constant energy fluence remains practically unchanged with an increase in the repetition rate from 10 kHz to 1 MHz, but a change in the pulse duration from 180 fs to 10 ps leads to a violation of the periodic structure due to the formation of extended continuously crystallized regions.
{"title":"Формирование периодических двухфазных структур на поверхности аморфных пленок Ge-=SUB=-2-=/SUB=-Sb-=SUB=-2-=/SUB=-Te-=SUB=-5-=/SUB=- при воздействии ультракоротких лазерных импульсов различной длительности и частоты следования","authors":"М.П. Смаев, П. И. Лазаренко, М.Е. Федянина, И.А. Будаговский, А. Г. Рааб, И.В. Сагунова, С. А. Козюхин","doi":"10.21883/os.2023.02.55005.15-23","DOIUrl":"https://doi.org/10.21883/os.2023.02.55005.15-23","url":null,"abstract":"Phase change memory materials due to their high susceptibility to low-intensity light fields are extremely attractive for active microphotonics and integrated optics devices. As a result of fast phase switching, these materials change the refractive index in a wide spectral range, which has found application in information storage systems. In this work, we studied the formation of two-phase periodic structures consisting of alternating lines of amorphous and crystalline phases on the surface of thin-film Ge2Sb2Te5 phase-change memory materials exposed to ultrashort laser pulses. Periodic structures were formed at a wavelength of 1030 nm at different durations and repetition rates of light pulses. It has been established that the ordering of two-phase structures obtained at a constant energy fluence remains practically unchanged with an increase in the repetition rate from 10 kHz to 1 MHz, but a change in the pulse duration from 180 fs to 10 ps leads to a violation of the periodic structure due to the formation of extended continuously crystallized regions.","PeriodicalId":24059,"journal":{"name":"Оптика и спектроскопия","volume":"5 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72556202","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-01-01DOI: 10.21883/os.2023.03.55390.92-23
V. Trofimov, P. Lin, С. В. Федоров, Николай Николаевич Розанов, Н. А. Веретенов, Yan Wang, Yongqiang Yang
The analysis and numerical simulation of the heating mode of a metal plate scanning beam of laser radiation was carried out. In the transverse-one-dimensional approximation, the estimates are obtained of the main dependences of the characteristics of the steady temperature profile on the parameters of the problem.
{"title":"Нагрев слоя металла сканирующим лазерным пучком","authors":"V. Trofimov, P. Lin, С. В. Федоров, Николай Николаевич Розанов, Н. А. Веретенов, Yan Wang, Yongqiang Yang","doi":"10.21883/os.2023.03.55390.92-23","DOIUrl":"https://doi.org/10.21883/os.2023.03.55390.92-23","url":null,"abstract":"The analysis and numerical simulation of the heating mode of a metal plate scanning beam of laser radiation was carried out. In the transverse-one-dimensional approximation, the estimates are obtained of the main dependences of the characteristics of the steady temperature profile on the parameters of the problem.","PeriodicalId":24059,"journal":{"name":"Оптика и спектроскопия","volume":"58 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73841657","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-01-01DOI: 10.21883/os.2023.01.54530.4439-22
А. К. Вершовский, М В Петренко
The method of transferring the frequency of an optically detected magnetic resonance both up and down by an arbitrary value is implemented in a single-beam optical pumping scheme by modulating the linearly polarized beam component. The possibility of observing the Hanle resonance in a magnetic field virtually zeroed upon transition to a rotating coordinate system is demonstrated. A model experiment was carried out, confirming the fundamental feasibility and effectiveness of the method.
{"title":"Перенос частоты оптически детектируемого магнитного резонанса и наблюдение эффекта Ханле в ненулевом магнитном поле","authors":"А. К. Вершовский, М В Петренко","doi":"10.21883/os.2023.01.54530.4439-22","DOIUrl":"https://doi.org/10.21883/os.2023.01.54530.4439-22","url":null,"abstract":"The method of transferring the frequency of an optically detected magnetic resonance both up and down by an arbitrary value is implemented in a single-beam optical pumping scheme by modulating the linearly polarized beam component. The possibility of observing the Hanle resonance in a magnetic field virtually zeroed upon transition to a rotating coordinate system is demonstrated. A model experiment was carried out, confirming the fundamental feasibility and effectiveness of the method.","PeriodicalId":24059,"journal":{"name":"Оптика и спектроскопия","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77962029","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-01-01DOI: 10.21883/os.2023.02.55011.16-23
П.А. Безруков, А. В. Нащекин, Александр Иванович Сидоров, Николай Валентинович Никоноров
The efficiency of photocatalytic decomposition of methyl orange solutions on the surface of nanoporous layers of copper, silver and their iodides has been studied. It is shows that nanoporous layers on metal substrates have two absorption bands: they absorb radiation in the UV and Vis spectral range. The process of decomposition of methyl orange molecules on the surface of metal-semiconductor nanostructures Cu-CuI and Ag-AgI occurs under the action of UV and Vis irradiation. While transparency of the methyl orange solution increases.
{"title":"Фотокаталитическое разложение растворов метилового оранжевого на поверхности нанопористых слоев меди, серебра и их йодидов","authors":"П.А. Безруков, А. В. Нащекин, Александр Иванович Сидоров, Николай Валентинович Никоноров","doi":"10.21883/os.2023.02.55011.16-23","DOIUrl":"https://doi.org/10.21883/os.2023.02.55011.16-23","url":null,"abstract":"The efficiency of photocatalytic decomposition of methyl orange solutions on the surface of nanoporous layers of copper, silver and their iodides has been studied. It is shows that nanoporous layers on metal substrates have two absorption bands: they absorb radiation in the UV and Vis spectral range. The process of decomposition of methyl orange molecules on the surface of metal-semiconductor nanostructures Cu-CuI and Ag-AgI occurs under the action of UV and Vis irradiation. While transparency of the methyl orange solution increases.","PeriodicalId":24059,"journal":{"name":"Оптика и спектроскопия","volume":"106 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80761419","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：