Vestnik RFFI最新文献

Electron-Beam Domain Patterning on the Nonpolar Surfaces of LiNbO3 Crystals and in Optical Waveguides Formed on the Nonpolar Surfaces LiNbO3晶体非极性表面上的电子束域图像化及在非极性表面上形成的光波导

Vestnik RFFI Pub Date : 2019-09-26 DOI: 10.22204/2410-4639-2019-103-03-14-25

R. Gainutdinov, Ya. V. Bodnarchuk, S. Lavrov

引用次数: 0

Atomically-Thin CdSe and CdTe Colloidal Nanosheets: Growth, Crystal Structure, and Optical Properties 原子薄CdSe和CdTe胶体纳米片:生长、晶体结构和光学性质

Vestnik RFFI Pub Date : 2019-07-31 DOI: 10.22204/2410-4639-2019-103-03-26-34

D. Kurtina, A. Garshev, L. D. Kozina, R. Vasiliev

引用次数: 1

Nanocomposites of Cellulose with Up-Conversion Phosphors for Photonics: Synthesis, Structure, Optical Properties 纤维素与上转换荧光粉的纳米复合材料:合成、结构、光学性质

Vestnik RFFI Pub Date : 2019-07-31 DOI: 10.22204/2410-4639-2019-103-03-59-77

P. Fedorov, A. Luginina, S. Kuznetsov

引用次数: 0

4D-Structural Dynamics of the Transition State: Free Molecules, Clusters and Nanocrystals 过渡态的4d结构动力学:自由分子、团簇和纳米晶体

Vestnik RFFI Pub Date : 2019-07-31 DOI: 10.22204/2410-4639-2019-103-03-107-128

S. A. Aseyev, A. Ischenko, I. Kochikov, B. Mironov, E. Ryabov, Yury A. Zhabanov, V. Kompanets, A. L. Malinovskii, A. Otlyotov, S. Chekalin

{"title":"4D-Structural Dynamics of the Transition State: Free Molecules, Clusters and Nanocrystals","authors":"S. A. Aseyev, A. Ischenko, I. Kochikov, B. Mironov, E. Ryabov, Yury A. Zhabanov, V. Kompanets, A. L. Malinovskii, A. Otlyotov, S. Chekalin","doi":"10.22204/2410-4639-2019-103-03-107-128","DOIUrl":"https://doi.org/10.22204/2410-4639-2019-103-03-107-128","url":null,"abstract":"Study of the structural dynamics of matter by methods with high spatially-temporal resolution represents new direction in modern science and provides the understanding of relationship inside the \"structure – dynamics – property\" triad in the field of physics, chemistry, biology and materials science. Application of femto and attosecond laser pulses for excitation and formation of synchronized ultrashort photoelectron bunches for probing makes it possible to observe coherent dynamics of nuclei and electrons in samples on necessary space-time scales. Using laser spectroscopy one can determine energy levels of the sample and trace their evolution over time. However, the extraction of the structural dynamics of matter from this information is achieved by indirect methods. In the paper authors demonstrate the direct approaches to the study of the coherent dynamics of the nuclei of laser-excited matter in the space-time continuum (4D), based on probing the object with ultra-short electron or X-ray pulses, and describe their experiments, which were carried out using ultrafast electron diffractometer and transmission electron microscope at the Institute of Spectroscopy RAS.","PeriodicalId":122949,"journal":{"name":"Vestnik RFFI","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122463444","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}

引用次数: 0

Nano-Patch Antennas as an Evolution of Optical Antennas 纳米贴片天线是光学天线的一种发展

Vestnik RFFI Pub Date : 2019-07-31 DOI: 10.22204/2410-4639-2019-103-03-78-92

A. V. Gritsienko, N. S. Kurochkin, S. P. Eliseev, A. Vitukhnovsky

引用次数: 1

Differentiation of Optical Signals with Dielectric Ridges on Top of a Slab Waveguide 平板波导顶部介质脊光信号的微分

Vestnik RFFI Pub Date : 2019-07-31 DOI: 10.22204/2410-4639-2019-103-03-35-45

V. Soifer, N. Golovastikov, L. Doskolovich, E. Bezus, D. Bykov

引用次数: 0

Contribution of Different Noise Sources to the Relative Instability of Laser Systems Stabilized by External Silicon Cavities 不同噪声源对外部硅腔稳定激光系统相对不稳定性的影响

Vestnik RFFI Pub Date : 2019-07-31 DOI: 10.22204/2410-4639-2019-103-03-93-106

D. Kryuchkov, G. Vishnyakova, K. Khabarova, K. Kudeyarov, N. Zhadnov, N. Kolachevsky

引用次数: 0

Promising Superconducting Materials for Highly Sensitive Detectors of the Infrared and Terahertz Ranges 用于高灵敏度红外和太赫兹探测器的超导材料

Vestnik RFFI Pub Date : 2019-07-31 DOI: 10.22204/2410-4639-2019-103-03-46-58

N. Titova, N. Tovpeko, A. Kardakova, G. Goltsman

{"title":"Promising Superconducting Materials for Highly Sensitive Detectors of the Infrared and Terahertz Ranges","authors":"N. Titova, N. Tovpeko, A. Kardakova, G. Goltsman","doi":"10.22204/2410-4639-2019-103-03-46-58","DOIUrl":"https://doi.org/10.22204/2410-4639-2019-103-03-46-58","url":null,"abstract":"Modern technologies of photonics, astrophysics, medicine and security systems have a demand for development of new types of sensitive detectors and/or optimization of existing ones. As an example, a strong demand exists for improvement of the characteristics of highly sensitive detectors based on superconducting materials. One way to optimize the performance of such detectors is to select a suitable superconducting material. This is due to the fact that the technical characteristics of devices are determined by relaxation mechanisms of nonequilibrium processes that occur in the material upon absorption of electromagnetic radiation. In this paper, we focused on the study of the relaxation of nonequilibrium processes in superconducting materials such as highly boron-doped polycrystalline diamond films, highly disordered titanium nitride (TiN) films and ultrathin amorphous tungsten silicide films (WSi). The experimental data allowed us to determine the temperature dependence of the inelastic relaxation time in the studied materials. These results can help us to evaluate the applicability of these materials for the different types of superconducting detectors.","PeriodicalId":122949,"journal":{"name":"Vestnik RFFI","volume":"70 3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122650049","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}

引用次数: 0

Complexes of Rare- and Alkaline-Earth Elements in Catalytic Intermolecular Hydrophosphination of Multiple C—C Bonds 稀土和碱土元素配合物在催化多C-C键分子间加氢磷酸化中的作用

Vestnik RFFI Pub Date : 2019-06-25 DOI: 10.22204/2410-4639-2019-102-02-58-73

I. V. Lapshin, A. Kissel, A. Trifonov

{"title":"Complexes of Rare- and Alkaline-Earth Elements in Catalytic Intermolecular Hydrophosphination of Multiple C—C Bonds","authors":"I. V. Lapshin, A. Kissel, A. Trifonov","doi":"10.22204/2410-4639-2019-102-02-58-73","DOIUrl":"https://doi.org/10.22204/2410-4639-2019-102-02-58-73","url":null,"abstract":"In accordance with United Nations General Assembly resolution, the year 2019 was proclaimed the International Year of the Periodic Table of Chemical Elements. Rare-earth elements were discovered during the time of the Periodic System development. In the past few decades, their compounds have attracted great interest due to their unique reactivity. This review covers recent achievements in the field of intermolecular hydrophosphination of alkenes, dienes and alkynes, which is catalyzed by rare earth and alkaline-earth metal complexes. Catalytic hydrophosphination reaction is the addition of an P—H bond to С—С multiple bonds, and offers an efficient and elegant synthetic approach to production of the organophosphorus compounds widely used in industrial synthesis, pharmaceuticals, agrochemistry, and other areas. The high values of the ionic radii of rare earth and alkaline-earth metals in combination with the Lewis acidity provide their compounds with a pronounced tendency to complex formation and, accordingly, high coordination numbers. Due to high reactivity of M—E (E = C, H, N, P) bonds, ease of Ln—P ı-bond metathesis and multiple C—C bond insertions, these compounds offer new prospects for the catalysis of the alkenes and alkynes hydrophosphination. Therefore, complexes of non-toxic and relatively abundant in nature rare earth and alkaline earth metals can be a cheaper and more effective alternative to compounds of late transition metals in the catalysis of the C—P bond formation.","PeriodicalId":122949,"journal":{"name":"Vestnik RFFI","volume":"121 6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123179844","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}

引用次数: 0

Methods for Synthesis of Molecular Materials with Unique Physical Properties 具有独特物理性质的分子材料的合成方法

Vestnik RFFI Pub Date : 2019-06-25 DOI: 10.22204/2410-4639-2019-102-02-82-100

A. Sidorov, M. Kiskin, A. Baranchikov, V. Ivanov, I. Eremenko

引用次数: 0