Journal of Applied Spectroscopy最新文献_第3页

Electron Paramagnetic Resonance of MnIn2S4 Single Crystals

IF 0.8 4区化学

Journal of Applied Spectroscopy Pub Date : 2025-01-11 DOI: 10.1007/s10812-025-01844-x

N. N. Niftiyev

引用次数: 0

Conversion of Silicon Micropowder Into Nanoparticles by Electric Discharge Modification in Ethanol

IF 0.8 4区化学

Journal of Applied Spectroscopy Pub Date : 2025-01-11 DOI: 10.1007/s10812-025-01848-7

A. A. Nevar, A. R. Shumejko, M. I. Nedelko, V. G. Kornev, N. V. Tarasenka, G. Chen, L. Shi

引用次数: 0

Nonmonotonic Dependence of the Stimulated Raman Scattering Threshold of 240-fs Pulses Near the Air-PMMA Surface

IF 0.8 4区化学

Journal of Applied Spectroscopy Pub Date : 2025-01-11 DOI: 10.1007/s10812-025-01840-1

S. M. Pershin, M. Ya. Grishin, V. A. Zavozin, V. N. Lednev, M. V. Ponarina, G. A. Boldin, I. A. Khodasevich, V. A. Orlovich

{"title":"Nonmonotonic Dependence of the Stimulated Raman Scattering Threshold of 240-fs Pulses Near the Air-PMMA Surface","authors":"S. M. Pershin, M. Ya. Grishin, V. A. Zavozin, V. N. Lednev, M. V. Ponarina, G. A. Boldin, I. A. Khodasevich, V. A. Orlovich","doi":"10.1007/s10812-025-01840-1","DOIUrl":"10.1007/s10812-025-01840-1","url":null,"abstract":"A nonmonotonic dependence of the stimulated Raman scattering (SRS) threshold of 240-fs second-harmonic pulses of an ytterbium fiber laser (515 nm, 3 Hz, up to 11 μJ/pulse) in organic glass (polymethylmethacrylate, PMMA) on C-H stretching vibrations has been discovered when moving the waist of the focused beam (lens F = 16 mm) from air into the sample volume. The first minimum of the threshold (~2 μ J) was found when the waist combined with the surface. Here, the maximum intensity and the maximum value of the nonlinear refractive index (nonlinear lens) supported channeling of the pump in the medium at the maximum length of the SRS exponential gain, taking into account that half of the beam caustic was in air. The second minimum was achieved by moving the entire beam caustic, stretched along the beam axis because of spherical aberration, in a layer of ~1.8 mm near the sample surface. Subsequent movement of the waist was accompanied by a five-fold increase in the SRS threshold due to conversion of a part of the pump pulse energy (515 nm) into the Stokes component (605 nm), the pulse of which was shifted forward because of dispersion of the refractive index and group velocities. This delay of the pump pulse destroyed the synergetic factor of action, which reduced the probability of a breakdown with a five-fold increase in pump energy. The delay reached a value of ~480 fs at a PMMA sample thickness of 10 mm. The breakdown was observed with pump fluctuations in the vicinity of the minimum threshold (2 μJ) at the input surface of the PMMA sample.","PeriodicalId":609,"journal":{"name":"Journal of Applied Spectroscopy","volume":"91 6","pages":"1220 - 1224"},"PeriodicalIF":0.8,"publicationDate":"2025-01-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143108699","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effect of Raman Opalescence on Titanium Dioxide Micropowders Under Pulse-Periodic Laser Excitation

IF 0.8 4区化学

Journal of Applied Spectroscopy Pub Date : 2025-01-11 DOI: 10.1007/s10812-025-01846-9

I. A. Rakhmatullaev, N. F. Bunkin, M. Kh. Davronov

引用次数: 0

Effect of the Conditions of the Synthesis of Mixed CsPbClxBr3–x Perovskite Nanocrystals on Their Optical Properties

IF 0.8 4区化学

Journal of Applied Spectroscopy Pub Date : 2025-01-11 DOI: 10.1007/s10812-025-01847-8

O. I. Patsinko, O. S. Kulakovich, A. A. Ramanenka, V. P. Kulakovich, S. V. Gaponenko

{"title":"Effect of the Conditions of the Synthesis of Mixed CsPbClxBr3–x Perovskite Nanocrystals on Their Optical Properties","authors":"O. I. Patsinko, O. S. Kulakovich, A. A. Ramanenka, V. P. Kulakovich, S. V. Gaponenko","doi":"10.1007/s10812-025-01847-8","DOIUrl":"10.1007/s10812-025-01847-8","url":null,"abstract":"Feasibility has been demonstrated for controlling the position of the luminescence maximum in the region 440–510 nm of mixed CsPbClxBr3–x perovskite nanocrystals by changing the initial PbBr2:PbCl2 molar ratio of the starting reagents as well as by the choice of the solvent for the post-synthesis treatment. X-ray fluorescence spectroscopy was used to find that the Br–:Cl– ratio in the synthesized nanocrystals is lower than the ratio of these ions in the initial reagents. Fourier transform infrared spectroscopy was used to show that postsynthesis treatment in acetone, in contrast to treatment in acetonitrile, promotes the removal of oleylamine, predominantly along with bromide ion, from the surface of the nanocrystals, which leads to a shift in the photoluminescence maximum toward shorter wavelengths and a decrease in the photoluminescence quantum yield. These results hold significance for the development of new combined luminophores derived from perovskite nanocrystals when precise selection of the color characteristics is required.","PeriodicalId":609,"journal":{"name":"Journal of Applied Spectroscopy","volume":"91 6","pages":"1261 - 1267"},"PeriodicalIF":0.8,"publicationDate":"2025-01-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143108607","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Optical and Electrical Properties of Sb2(SxSe1–x)3 Films for Solar Cells

IF 0.8 4区化学

Journal of Applied Spectroscopy Pub Date : 2025-01-11 DOI: 10.1007/s10812-025-01845-w

M. S. Tivanov, T. M. Razykov, K. M. Kuchkarov, L. S. Lyashenko, E. S. Voropay, Sh.B. Utamurodova, D. Z. Isakov, M. A. Makhmudov, A. N. Olimov, S. A. Muzafarova, D. S. Bayko

{"title":"Optical and Electrical Properties of Sb2(SxSe1–x)3 Films for Solar Cells","authors":"M. S. Tivanov, T. M. Razykov, K. M. Kuchkarov, L. S. Lyashenko, E. S. Voropay, Sh.B. Utamurodova, D. Z. Isakov, M. A. Makhmudov, A. N. Olimov, S. A. Muzafarova, D. S. Bayko","doi":"10.1007/s10812-025-01845-w","DOIUrl":"10.1007/s10812-025-01845-w","url":null,"abstract":"The vacuum thermal evaporation method was used to produce Sb2(SxSe1–x)3 films from powders of precursor binary compounds, Sb2S3 and Sb2Se3, at substrate temperature 300°C. The effect of the elemental composition ratio S/(S + Se) on the optical and electrical properties of Sb2(SxSe1–x)3 films was studied. The band gap width of Sb2(SxSe1–x) films increases with an increase in the sulfur concentration. The prepared films feature low Urbach energies indicating low-defect structure. The temperature dependence of the resistance indicated the presence of deep-lying levels in the range 0.5–0.8 eV depending of the S/(S+Se) atomic concentration ratio. These results indicate the feasibility of producing effective solar cells containing Sb2(SxSb1–x)3 obtained by means of thermal evaporation of powders of Sb2S3 and Sb2Se3.","PeriodicalId":609,"journal":{"name":"Journal of Applied Spectroscopy","volume":"91 6","pages":"1249 - 1255"},"PeriodicalIF":0.8,"publicationDate":"2025-01-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143108700","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Study of Magnetization Reversal Processes of Cobalt Nanowires Using NMR and Radiofrequency Resonance Magnetometry Methods

IF 0.8 4区化学

Journal of Applied Spectroscopy Pub Date : 2025-01-10 DOI: 10.1007/s10812-025-01849-6

T. O. Gegechkori, G. I. Mamniashvili

引用次数: 0

Assessment of the Electrochemical Potential of Thylakoid Membranes in Hordeum vulgare L. Sprouts of Different Ages Under Heat Stress Using Differential Absorption Spectroscopy

IF 0.8 4区化学

Journal of Applied Spectroscopy Pub Date : 2025-01-10 DOI: 10.1007/s10812-025-01852-x

N. L. Pshybytko

{"title":"Assessment of the Electrochemical Potential of Thylakoid Membranes in Hordeum vulgare L. Sprouts of Different Ages Under Heat Stress Using Differential Absorption Spectroscopy","authors":"N. L. Pshybytko","doi":"10.1007/s10812-025-01852-x","DOIUrl":"10.1007/s10812-025-01852-x","url":null,"abstract":"The electrochemical potential on the thylakoid membrane and its components in cotyledons of 4-, 7- and 11-day-old Hordeum vulgare L. sprouts was studied using differential absorption spectroscopy and the electrochromic shift of pigment absorption. It was found that the proton motive force decreased and the proportion of its electrical component increased during the ontogenesis of the cotyledon. Exposure to elevated temperature (40°C for 3 h) decreased the electrochemical potential, proton gradient, and thylakoid membrane conductivity for protons and increased the electrical potential on the thylakoid membrane in young 4-day-old sprouts. No significant changes in the formation of the electrochemical potential on the thylakoid membrane were detected in 7-day-old leaves, which had a fully formed photosynthetic apparatus, after heat treatment at 40°C for 3 h. A thermally induced decrease in the electrical component of the proton motive force and an increase in the transthylakoid proton gradient were detected in the senescent cotyledon of 11-day-old sprouts. It was concluded that the electrochemical potential of thylakoid membranes reacts differently to heat effects in Hordeum vulgare L. sprouts of different ages.","PeriodicalId":609,"journal":{"name":"Journal of Applied Spectroscopy","volume":"91 6","pages":"1294 - 1300"},"PeriodicalIF":0.8,"publicationDate":"2025-01-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143108477","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Influence of Pathogenic Microorganisms on Spectral Characteristics of Leaf Pigments in Apple Clonal Rootstocks

IF 0.8 4区化学

Journal of Applied Spectroscopy Pub Date : 2025-01-10 DOI: 10.1007/s10812-025-01851-y

M. V. Maslova, M. L. Dubrovsky, E. V. Grosheva

引用次数: 0

Multiple Frustrated Total Internal Reflection IR Spectroscopy as a Way to Study the Typomorphism of Silica Minerals in Gold Deposits

IF 0.8 4区化学

Journal of Applied Spectroscopy Pub Date : 2025-01-10 DOI: 10.1007/s10812-025-01843-y

G. A. Yurgenson, E. V. Mironova

引用次数: 0