Библиотека института физики им. Л.В. Киренского СО РАН

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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Zhang, Qianqian, Li, Guogang, Li, Guangzhi, Liu, Dongjie, Dang, Peipei, Qiu, Lei, Lian, Hongzhou, Molokeev M. S., Lin, Jun
Заглавие : Optical thermometer based on efficient near-infrared dual-emission of Cr3+ and Ni2+ in magnetoplumbite structure
Колич.характеристики :9 с
Место публикации : Adv. Optical Mater. - 2024. - Vol. 12, Is. 1. - Ст.2301429. - ISSN 21951071 (eISSN), DOI 10.1002/adom.202301429
Примечания : Cited References: 22. - This work was financially supported by the National Science and Technology Major Project (2022YFB3503800), the Projects for Science and Technology Development Plan of Jilin Province (20210402046GH), the National Natural Science Foundation of China (NSFC No. 51932009, 51720105015, 51929201, 52072349, 52172166), the Natural Science Foundation of Zhejiang Province (LR22E020004), and the Project funded by China Postdoctoral Science Foundation (2022TQ0365). M.S. Molokeev acknowledges the support by the Ministry of Science and Higher Education of Russian Federation (Project No. FSRZ-2023-0006)
Аннотация: Recently, an optical thermometer based on the dual-emitting fluorescent intensity ratio (FIR) in the visible light (VIS) region has achieved great development. However, there is very little progress in thermometers from NIR light. In this work, a novel optical thermometer based on highly efficient NIR dual-emission of Cr3+ and Ni2+ in LaZnGa11O19 (LZG) with a magnetoplumbite structure is designed. Utilizing energy transfer from Cr3+ to Ni2+, the dual-emission shows a wide coverage in the 650–1600 nm region, covering the NIR I and II windows, respectively. The as-reported LZG:0.3Cr3+ and LZG:0.3Cr3+,0.01Ni2+ phosphors can reach internal/external quantum efficiency (IQE/EQE) of 94%/64% and 77%/53%, respectively. The electroluminescence property and potential applications in spectroscopic analysis, night-vision, and bioimaging of fabricated NIR-LED with LZG:0.3Cr3+,0.01Ni2+ have also been investigated. In addition, the designed ratiometric optical thermometer responds to wide temperature ranges (100-175 K, 200–475 K) and shows a maximum relative sensitivity value (Sr) of 2.4% K−1 at 475 K. The optical performance of absorption in the red region and emission in the NIR region enables the LZG:0.3Cr3+,0.01Ni2+ to become a candidate for NIR optical thermometers in biotechnological applications.
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Вид документа : Статья из журнала
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Автор(ы) : Balashov Yu. Yu., Myagkov V. G., Bykova L. E., Volochaev M. N., Zhigalov V. S., Matsynin A. A., Galushka K. A., Bondarenko G. N., Komogortsev S. V.
Заглавие : Features of the course of the solid-state reactions in a Sn/Fe/Cu trilayer film system
Колич.характеристики :5 с
Коллективы : Nanophysics & Nanoelectronics, International Symposium
Место публикации : Tech. Phys. - 2023. - Vol. 68, Is. 7. - P.940-944. - ISSN 10637842 (ISSN), DOI 10.61011/TP.2023.07.56642.73-23. - ISSN 10906525 (eISSN)
Примечания : Cited References: 18
Аннотация: Study of the mechanisms of the solid-state reactions in Sn/Fe/Cu thin films is interesting both from a fundamental point of view and from a view of the importance of emerging intermetallics in the technology of solder joints and thin-film lithium-ion batteries. By the integrated approach, including both X-ray phase analysis and local elemental analysis of the cross-sections of the films, the phase composition and the mutual arrangement of phases were studied, at various stages of the solid-state reaction occurring at different temperatures. The observed sequence of the appearing phases differs significantly from the expected one if the mass transfer took place by a volume diffusion through the forming layers.
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Вид документа : Статья из сборника (выпуск продолж. издания)
Шифр издания :
Автор(ы) : Slyusarenko N. V., Krylov A. S., Timofeeva M. V., Shipilovskikh S. A., Slyusareva E. A.
Заглавие : Luminescent studies of flexible [DUT-8 (Zn)] metal-organic frameworks
Колич.характеристики :6 с
Коллективы : International Conference on Pulsed Lasers and Laser Applications
Место публикации : Proc. SPIE. - 2023. - Vol. 12920: XVI International Conference on Pulsed Lasers and Laser Applications (10-15 September 2023, Tomsk, Russian Federation). - Ст.1292014. - , DOI 10.1117/12.3005774
Примечания : Cited References: 10. - The reported study was funded by RFBR and DFG, project 21-52-12018
Аннотация: An approach to the study of the porous structure of metal-organic frameworks (MOF) using guest luminescent molecules with specially selected spectral characteristics as acceptors of electronic excitation energy was suggested. If such molecules are adsorbed in MOF pores with sizes comparable to the Förster radius, Förster resonance energy transfer (FRET) from photoexcited linkers occurs. In this case quenching of luminescence of the linker can serve as analytical signals indicating open pore structure of the MOF. The developed approach was demonstrated by the example of DUT-8(Zn) MOF and Coumarin 1 as guest molecules by time-resolved luminescence methods.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Yakimanskiy, Anton A., Kaskevich, Ksenia I., Chulkova, Tatiana G., Krasnopeeva, Elena L., Savilov, Serguei V., Voinova, Vera V., Neumolotov, Nikolay K., Zhdanov, Andrey P., Rogova, Anastasia V., Tomilin F. N., Zhizhin, Konstantin Yu., Yakimansky, Alexander V.
Заглавие : Effect of complexation with closo-decaborate anion on photophysical properties of copolyfluorenes containing dicyanophenanthrene units in the main chain
Колич.характеристики :11 с
Место публикации : Micro. - 2023. - Vol. 3, Is. 4. - P.930-940. - ISSN 26738023 (eISSN), DOI 10.3390/micro3040063
Примечания : Cited References: 23. - This work was supported by the Russian Science Foundation, grant no. 23-43-00060
Аннотация: The functionalization of copolyfluorenes containing dicyanophenanthrene units by closo-decaborate anion is described. Target copolyfluorenes were analyzed using SEM, UV-vis, luminescence, NMR, and Fourier-transform infrared (FTIR) spectroscopy. The effect of complexation with the closo-decaborate anion on the photophysical properties was studied both experimentally and theoretically. The PL data indicate an efficient charge transfer from fluorene to the dicyanophenanthrene units coordinated to the closo-decaborate. The coordination of closo-decaborate clusters to the nitrile groups of copolyfluorenes provides an important route to new materials for sensors and light-emitting devices while, at the same time, serving as a platform for further study of the nature of boron clusters.
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Вид документа : Статья из журнала
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Автор(ы) : Morozov E. V., Trukhan, Sergey N., Kozhevnikov, Ivan V., Peterson, Ivan V., Martyanov, Oleg N.
Заглавие : Dynamics of asphaltene aggregates under high-pressure CO2 revealed by pulsed-field gradient NMR
Колич.характеристики :12 с
Место публикации : Energy & Fuels. - 2023. - Vol. 37, Is. 22. - P.17215-17226. - ISSN 08870624 (ISSN), DOI 10.1021/acs.energyfuels.3c02862. - ISSN 15205029 (eISSN)
Примечания : Cited References: 90. - The present research was performed with the financial support of the Russian Science Foundation (project no. 21-13-00171, http://rscf.ru/project/21-13-00171/) using the equipment of the Krasnoyarsk Regional Center of Research Equipment of the Federal Research Center “Krasnoyarsk Science Center SB RAS”
Аннотация: The work demonstrates the results of the first experimental PFG NMR study in situ of the complex phase behavior of asphaltenes in the presence of high-pressure CO2. To perform the experiments, a series of sealed, thick-walled quartz capillaries were prepared with a mixture of CO2 and asphaltenes dissolved either in chloroform or benzene at different initial concentrations. Then, the temperature dependence of the diffusion coefficients of the asphaltene aggregates was measured for each sample after the mixture reached its equilibrium state, at which, in accordance with the solubility limit, only part of the initial asphaltenes remained dissolved. Despite quite low residual asphaltene concentrations in solution, experimental data clearly demonstrated the presence of aggregated structures (up to 70–80 wt %) attributed solely to nanoaggregates, with no signs of the presence of macroaggregates in the samples. Temperature dependencies of aggregate diffusivity clearly showed that the scenario, according to which the evolution of the asphaltene aggregates will develop, strongly depends on the initial asphaltene concentration, mass fraction of CO2 loaded into the system, and chemical nature of the solvent used. In particular, the most diluted asphaltene solution, expected to be the most resistive to the aggregation processes in a high-pressure CO2 environment, revealed the most pronounced aggregation-dependent translational dynamics as compared to those with a moderate initial asphaltene concentration. Contrarily, the concentrated asphaltene solution may not show drastic aggregation processes if the mass fraction of the CO2 loaded will not appear to be so high. Finally, the experimental results provide evidence that the temperature-triggered structural transformation of asphaltene aggregates due to the noncovalent bond breakup is not hindered under high-pressure CO2, but instead becomes more emphasized. The results obtained shed new light on asphaltene aggregate dynamics and brought new knowledge about the fundamental behavior of asphaltene in high-pressure CO2 conditions.
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Вид документа : Однотомное издание
Шифр издания : Описание изобретения к патенту 2801388!-561310100
Автор(ы) : Боев, Никита Михайлович, Крёков, Сергей Дмитриевич, Подшивалов, Иван Валерьевич, Соловьев, Платон Николаевич, Изотов, Андрей Викторович, Негодеева, Ирина Александровна, Александровский, Александр Сергеевич
Заглавие : Устройство для передачи электрической энергии на промышленной частоте через проводящий экран .-
Коллективы : Федеральный исследовательский центр "Красноярский научный центр Сибирского отделения Российской академии наук", Федеральная служба по интеллектуальной собственности (Роспатент), Федеральный институт промышленной собственности
Место публикации : Изобретения. Полезные модели: офиц. бюл. Фед. службы по интеллектуал. собственности (Роспатент). - 2023. - № 22
Аннотация: Изобретение относится к области электротехники, предназначено для беспроводной передачи электромагнитной энергии через проводящие экраны на промышленной частоте и может быть использовано в беспроводных зарядных устройствах, в системах энергоснабжения устройств, находящихся в частично или полностью замкнутых металлических экранах. Устройство для передачи электрической энергии на промышленной частоте через проводящий экран включает передатчик электрической энергии с передающей катушкой, приемник электрической энергии с приемной катушкой, новым является то, что между передающей и приемной катушками расположен проводящий электрический ток экран, толщина которого меньше глубины скин-слоя в нем для заданной рабочей частоты, параллельно передающей и приемной катушкам подключены конденсаторы, при этомкатушки и конденсаторы образуют связанные колебательные контуры, а передача электрической энергии осуществляется на одной из резонансных частот, на которой разница междуфазами токов, текущих в приемной и передающей катушках, находится в диапазоне от 160° до 180°. Техническим результатом является обеспечение возможности передачи электрической энергии на промышленной частоте (50/60 Гц) через проводящий электрический ток экран. 17 ил.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Sukhanova E.V., Sagatov N., Oreshonkov A. S., Gavryushkin P.N., Popov Z.I.
Заглавие : Novel Janus 2D structures of XMoY (X, Y = O, S, Se, Te) composition for solar hydrogen production
Место публикации : Int. J. Hydrog. Energy. - 2023. - Vol. 48, Is. 38. - P.14226-14237. - ISSN 03603199 (ISSN), DOI 10.1016/j.ijhydene.2022.12.286. - ISSN 18793487 (eISSN)
Примечания : Cited References: 97. - The authors acknowledge financial support from Russian Science Foundation (№ 21-73-20183). The authors are grateful to the Joint Supercomputer Center of the Russian Academy of Sciences and to the Information Technology Centre of Novosibirsk State University for providing access to the cluster computational resources
Аннотация: The successful fabrication of H-phase Janus transition metal dichalcogenides (TMDs) has received considerable interest due to its great potential in photocatalytic applications. Here, new A′-XMoY (X/Y = O, S, Se, Te) Janus-type structures belonging to the family of TMDs were theoretically investigated for the first time in terms of photocatalytic water splitting via DFT calculations. For all compounds, the Raman spectra were calculated. The SMoO, SeMoO, SMoSe, SMoTe and SeMoTe compounds are dynamically stable and are semiconductors. Among all considered structures SMoTe is the most promising candidate for solar hydrogen production because valence and conduction bands perfectly engulf the redox potentials of water at both neutral and acidic media, opposite to SMoSe, SMoO, SeMoO suitable only in the acidic media, and SeMoTe – in the neutral media. Moreover, A′-SMoTe demonstrates the outstanding values of the solar-to-hydrogen (STH) conversion efficiencies of 54.0 and 67.1 for neutral and acidic media.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Zharkov S. M., Yumashev V. V., Moiseenko E. T., Altunin R. R., Solovyov L. A., Volochaev M. N., Zeer G. M., Nikolaeva N. S., Belousov O. V.
Заглавие : Thermokinetic study of aluminum-induced crystallization of a-Si: The effect of Al layer thickness
Колич.характеристики :24 с
Место публикации : Nanomaterials. - 2023. - Vol. 13, Is. 22. - Ст.2925. - ISSN 20794991 (eISSN), DOI 10.3390/nano13222925
Примечания : Cited References: 70. - This work was supported by the Russian Science Foundation under grant #22-13-00313
Аннотация: The effect of the aluminum layer on the kinetics and mechanism of aluminum-induced crystallization (AIC) of amorphous silicon (a-Si) in (Al/a-Si)n multilayered films was studied using a complex of in situ methods (simultaneous thermal analysis, transmission electron microscopy, electron diffraction, and four-point probe resistance measurement) and ex situ methods (X-ray diffraction and optical microscopy). An increase in the thickness of the aluminum layer from 10 to 80 nm was found to result in a decrease in the value of the apparent activation energy Ea of silicon crystallization from 137 to 117 kJ/mol (as estimated by the Kissinger method) as well as an increase in the crystallization heat from 12.3 to 16.0 kJ/(mol Si). The detailed kinetic analysis showed that the change in the thickness of an individual Al layer could lead to a qualitative change in the mechanism of aluminum-induced silicon crystallization: with the thickness of Al ≤ 20 nm. The process followed two parallel routes described by the n-th order reaction equation with autocatalysis (Cn-X) and the Avrami–Erofeev equation (An): with an increase in the thickness of Al ≥ 40 nm, the process occurred in two consecutive steps. The first one can be described by the n-th order reaction equation with autocatalysis (Cn-X), and the second one can be described by the n-th order reaction equation (Fn). The change in the mechanism of amorphous silicon crystallization was assumed to be due to the influence of the degree of Al defects at the initial state on the kinetics of the crystallization process.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Kazak N. V., Arauzo A., Bartolome J., Molokeev M. S., Dudnikov V. A., Solovyov L., Borus A., Ovchinnikov S. G.
Заглавие : Anisotropic thermal expansion and electronic transitions in the Co3BO5 ludwigite
Место публикации : Dalton Trans.: Royal Society of Chemistry, 2022. - Vol. 51, Is. 16. - С. 6345-6357. - ISSN 14779226 (ISSN), DOI 10.1039/d2dt00270a
Примечания : Cited References: 57. - We are grateful to the Russian Foundation for Basic Research (project no. 20-02-00559 and 21-52-12033) for supporting this paper. This work was performed within the framework of the budget project no. 0287-2021-0013 for the Institute of Chemistry and Chemical Technology SB RAS. We acknowledge the financial support from the Spanish Ministry of Economy, Industry and Competitiviness (MINECO), (Grant No. MAT2017-83468-R) and from the regional Government of Aragón (E12-20R RASMIA project)
Аннотация: The investigations of the crystal structure, magnetic and electronic properties of Co3BO5 at high temperatures were carried out using powder X-ray diffraction, magnetic susceptibility, electrical resistivity, and thermopower measurements. The orthorhombic symmetry (Sp.gr. Pbam) was observed at 300 K and no evidence of structural phase transitions was found up to 1000 K. The compound shows a strong anisotropy of the thermal expansion. A large negative thermal expansion along the a-axis is observed over a wide temperature range (T = 300–600 K) with αa = −35 M K−1 at T = 500 K with simultaneous expansion along the b- and c-axes with αb = 70 M K−1 and αc = 110 M K−1, respectively. The mechanisms of thermal expansion are explored by structural analysis. The activation energy of the conductivity decreases significantly above 700 K. Electronic transport was found to be a dominant conduction mechanism in the entire temperature range. The correlations between the thermal expansion, electrical resistivity, and effective magnetic moment were revealed and attributed to the evolution of the spin state of Co3+ ions towards the spin crossover and gradual charge-ordering transition.
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10.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Mikhlin Y. L., Borisov R. V., Vorobyev S. A., Tomashevich Y. V., Romanchenko A. S., Likhatski M. N., Karacharov A. A., Bayukov O. A., Knyazev Yu. V., Velikanov D. A., Zharkov S. M., Krylov A. S., Krylova S. N., Nemtsev I. V.
Заглавие : Synthesis and characterization of nanoscale composite particles formed by 2D layers of Cu-Fe sulfide and Mg-based hydroxide
Место публикации : J. Mater. Chem. A. - 2022. - Vol. 10, Is. 17. - P.9621-9634. - ISSN 20507488 (ISSN), DOI 10.1039/d2ta00877g
Примечания : Cited References: 84. - This research was supported by the Russian Foundation for Basic Research, Krasnoyarsk Territory Administration and Krasnoyarsk Territory Science Foundation, project 20-43-242903. Facilities of the Krasnoyarsk Regional Center of Research Equipment of Federal Research Center “Krasnoyarsk Science Center SB RAS” were employed in the work
Аннотация: We introduce here a multifunctional material composed of alternating atomic sulfide sheets close to the composition of CuFeS2 and Mg-based hydroxide ones (valleriite), which are assembled due to their electric charges of opposite sign. Valleriite particles 50-200 nm in lateral size and 10-20 nm in thickness were synthesized via a simple hydrothermal pathway using various concentrations of precursors and dopants, and examined with XRD, TEM, EDS, X-ray photoelectron spectroscopy, reflection electron energy loss spectroscopy (REELS), Mossbauer, Raman and UV-vis-NIR spectroscopies, and magnetization, dynamic light scattering, and zeta potential measurements. The electronic, magnetic and optical characteristics are found to be critically dependent on the charge (electron density) at the narrow-gap sulfide layers containing Cu+ and Fe3+ cations, and can be tuned via the composition of the hydroxide part. Particularly, substitution of Mg2+ with Al3+ increases the negative charge of the hydroxide layers and reduces the content of Fe3+-OH centers (10-45% of total iron); the effects of Cr and Co dopants entering both layers are more complicated. Mossbauer doublets of paramagnetic Fe3+ detected at room temperature transform into several Zeeman sextets at 4.2 K; the hyperfine fields up to 500 kOe and complex magnetic behavior, but not pure paramagnetism or antiferromagnetism, were observed for valleriites with the higher positive charge of the sulfide sheets, probably due to the depopulation of the minority-spin 3d states of S-bonded Fe3+ ions. Aqueous colloids of valleriite show optical absorption at 500-750 nm, which, along with the peaks at the same energies in REELS, may arise due to quasi-static dielectric resonance involving the vacant Fe 3d band and being dependent on the composition of both layers too. These and other findings call attention to valleriites as a new rich family of 2D materials for a variety of potential applications.
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