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Unconventional superconductivity in the single-atom-layer alloy Si(111)−√3×√3−(Tl,Pb)

Physical Review B 2018年第13期98卷 134505-134505页

作者： T. Nakamura H. Kim S. Ichinokura A. Takayama A. V. Zotov A. A. Saranin Y. Hasegawa S. Hasegawa Department of Physics University of Tokyo Hongo Tokyo 113-0033 Japan The Institute for Solid State Physics University of Tokyo Kashiwa Chiba 277-8581 Japan Institute of Automation and Control Processes FEB RAS 690041 Vladivostok Russia and School of Natural Sciences Far Eastern Federal University 690000 Vladivostok Russia

We present results of low-temperature scanning tunneling microscopy/spectroscopy measurements on the one-atom-layer superconductor, Si(111)−√3×√3−(Tl,Pb) which has a spin-split band structure due to the rashba-Bychkov effect. It was revealed that it has a multiple superconducting gap Δ with significant anisotropy and sizable magnitude of 2Δ/kBTC∼8.6(kB is the Boltzmann constant and TC is the critical superconducting temperature). Under the magnetic field, a dip structure was observed even at the core of the vortex. The dip structure was like a “pseudogap” because it remained up to 2 T, well above the upper critical magnetic field determined in the transport measurements (∼0.7 T). This unconventional behavior suggests the possibility of spin-triplet Cooper pairs related to parity-broken superconductors.

关键词： rashba coupling Spin-triplet pairing Superconductivity Surface states Surfaces Scanning probe microscopy Scanning tunneling spectroscopy

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Electrostatic Field Influence on Luminescence Features of Cadmium Sulphide Quantum Dots in Silica Matrix

Electrostatic Field Influence on Luminescence Features of Ca...

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International Conference on Photonics of Nano- and Bio-Structures, PNBS-2015, Russia and the International Conference on Photonics of Nano- and Micro-Structures, PNMS-2015

作者： Voznesenskiy, S.S. Sergeev, A.A. Postnova, I.V. Shchipunov, Y.A. Institute of Automation and Control Processes FEB RAS 5 Radio St. Vladivostok690041 Russia Far Eastern Federal University 8 Sukhanova St. Vladivostok690950 Russia Institute of Chemistry of FEB RAS 159 Prosp. 100-Letiya Vladivostoka Vladivostok690022 Russia

The effect of electrostatic field on optical properties of silicate nanocomposite with cadmium sulfide quantum dots was investigated. It was found that the electrostatic field causes quantum dot orientation along the field force lines leading to changes in the polarized components of the luminescence spectrum. The influence of field force line direction on photoinduced absorption characteristics arised from λ = 405.9 nm laser radiation exposure to nanocomposite was shown. © 2017 The Authors.

关键词： Luminescence

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Modification of Optical Properties of CdS-silicate Nanocomposites by Thermal Annealing

Modification of Optical Properties of CdS-silicate Nanocompo...

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International Conference on Photonics of Nano- and Bio-Structures, PNBS-2015, Russia and the International Conference on Photonics of Nano- and Micro-Structures, PNMS-2015

作者： Sergeev, A.A. Voznesenskiy, S.S. Galkina, A.N. Postnova, I.V. Institute of Automation and Control Processes FEB RAS 5 Radio St. Vladivostok690041 Russia Far Eastern Federal University 8 Sukhanova St. Vladivostok690950 Russia

Temperature influence on optical and structural properties of nanocomposite structures based on cadmium sulfide quantum dots in silicate matrix was investigated. The mechanism of occurrence of reversible laser-induced absorption is proposed. It was found that annealing of nanocomposite up to 120 °C leads to substantial change of its absorption and luminescence spectra caused by transformation of quantum dot crystal lattice from amorphous to sphalerite. The nanocomposite with the sphalerite lattice QDs does not possess the effect of the photo-induced absorption. © 2017 The Authors.

关键词： Luminescence

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Special Features of Copper(II) Detection in Aqueous Solutions

Special Features of Copper(II) Detection in Aqueous Solution...

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International Conference on Photonics of Nano- and Bio-Structures, PNBS-2015, Russia and the International Conference on Photonics of Nano- and Micro-Structures, PNMS-2015

作者： Sergeev, A.A. Mironenko, A.Y. Leonov, A.A. Nazirov, A.E. Voznesenskiy, S.S. Bratskaya, S.Y. Kulchin, Y.N. Institute of Automation and Control Processes of FEB RAS 5 Radio St. Vladivostok690041 Russia Far Eastern Federal University 8 Sukhanova St. Vladivostok690950 Russia Institute of Chemistry of FEB RAS 159 Prosp. 100-Letiya Vladivostoka Vladivostok690022 Russia

New approach to organize fluorescent sensor system for determination of metal ions in aqueous solutions was presented. The approach is based on modification of hydrophilic polymer with sensitive fluorescent indicators. Possibility to register Cu2+ ions by analyzing of luminescence excitation spectra and lifetimes of the sensitive coating is presented. © 2017 The Authors.

关键词： Metal ions

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Relief generation for urban scene reconstruction using Google Maps services 27

Relief generation for urban scene reconstruction using Googl...

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27th International Conference on Computer Graphics and Vision, GraphiCon 2017

作者： Kudryashov, A. Soloviev, I. Institute of Automation and Control Processes Far Eastern Branch of RAS Vladivostok Russia Institute of Applied Mathematics Far Eastern Branch of RAS Vladivostok Russia

A method of the relief generation for the reconstruction of a three-dimensional scene for urban environment is proposed. Reconstruction using data from the topographic plan. The geolocation data of the Google Maps Ele... 详细信息

ISBN: (纸本)9785794429633

关键词： Image reconstruction

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Plasmonic nanolenses produced by cylindrical vector beam printing for sensing applications

arXiv

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arXiv 2019年

作者： Syubaev, S.A. Zhizhchenko, A.Yu. Pavlov, D.V. Gurbatov, S.O. Pustovalov, E.V. Porfirev, A.P. Khonina, S.N. Kulinich, S.A. Rayappan, J.B.B. Kudryashov, S.I. Kuchmizhak, A.A. Far Eastern Federal University Vladivostok Russia Institute of Automation and Control Processes Far Eastern Branch Russian Academy of Sciences Vladivostok Russia Samara National Research University Samara Russia IPSI RAS - Branch of the FSRC Crystallography and Photonics RAS Samara Russia Department of Mechanical Engineering Tokai University Hiratsuka Kanagawa Japan School of Electrical and Electronics Engineering SASTRA Deemed University Thanjavur Tamil Nadu India Lebedev Physical Institute Russian Academy of Sciences Moscow Russia National Research Nuclear University MEPhI Moscow Russia

Here, we demonstrate a simple direct maskless laser-based approach for fabrication of back-reflector-coupled plasmonic nanorings arrays. The approach is based on delicate ablation of an upper metal film of a metal-insulator-metal (MIM) sandwich with donut-shaped laser pulses followed by argon ion-beam polishing. After being excited with a radially polarized beam, the as-prepared MIM configuration of the nanorings permitted to realize efficient nanofocusing of constructively interfering plasmonic waves excited in the gap area between the nanoring and back-reflector mirror. For optimized geometric parameters of such MIM structure, substantial enhancement of the electromagnetic near-fields at the center of the ring within a single focal spot with the size of 0.37λ2 can be achieved, which is confirmed by Finite Difference Time Domain (FDTD) calculations, as well as by detection of enhanced PL signal from adsorbed organic dye molecules. The simple large-scale and cost-efficient fabrication procedure used, along with relatively good tolerance to excitation beam misalignment, make the proposed structures promising for realization of various nanophotonic and biosensing platforms that utilize cylindrical vector beam as a pump source. Copyright © 2019, The Authors. All rights reserved.

关键词： Plasmonics

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A rigorous model for evaluating moving window soft sensors for industrial distillation processes

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Chemical Engineering Transactions 2018年 69卷 487-492页

作者： Torgashov, Andrei Skogestad, Sigurd An, Dmitry Process Control Laboratory Institute of Automation and Control Process FEB RAS 5 Radio Str. Vladivostok Russia Department of Chemical Engineering Norwegian University of Science and Technology TrondheimNO-7491 Norway Gazpromneft-Omsk Refinery JSC 1 Pr. Gubkina Omsk644040 Russia

ISBN: (纸本)9788895608662

Traditionally, soft sensors are developed based on measurement data only, but here we consider a moving window (MW) soft sensor (SS) that uses data generated from a calibrated, rigorous model of the distillation columns of an FFC unit at Gazpromneft-Omsk Refinery. The contribution of the paper is that a procedure is developed for MW SS design that incorporates a priori knowledge, which is especially suitable when the training sample is small and contains measurement errors. In addition, we propose a continuous adaptation of all model parameters based on new data, instead of the usual procedure of only updating the bias. The accuracy of the predicted product quality is investigated by calculating the coefficient of determination (R2) and root mean squared error (RMSE) for the test sample. Several approaches were considered, and we found that a constrained optimization approach was superior. The constraints on the model parameters of SSs are derived from a calibrated, rigorous distillation unit model. The improved estimator quality resulted in the successful industrial application of advanced process control (APC) systems. © Copyright 2018, AIDIC Servizi S.r.l.

关键词： Distillation columns

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Direct laser printing of chiral plasmonic nanojets by vortex beams

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Journal of Physics: Conference Series 2018年第1期951卷

作者： S A Syubaev Institute for Automation and Control Processes FEB RAS 5 Radio Str. 690041 Vladivostok Russia

Donut-shaped laser radiation, carrying orbital angular momentum, namely optical vortex, was recently shown to provide vectorial mass transfer, twisting transiently molten material and producing chiral micro-scale structures on surfaces of different bulk materials upon their resolidification. In this paper, we show that nanosecond laser vortices can produce chiral nanoneedles (nanojets) of variable size on thin films of such plasmonic materials, as silver and gold films, covering thermally insulating substrates. These results suggest optical interference of the incident and reflected laser beams as a source of complex surface intensity distributions in metal films, possessing spiral components and driving both center-symmetric and spiral thermocapillary melt flows to yield in frozen nanoneedles with their pre-determined spiral nanocarving.

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Erratum to: One-stage immobilization of the microalga Porphyridium purpureum using a biocompatible silica precursor and study of the fluorescence of its pigments

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European biophysics journal : EBJ 2018年第1期47卷 87页

作者： S S Voznesenskiy A Yu Popik E L Gamayunov T Yu Orlova Zh V Markina I V Postnova Yu A Shchipunov Institute of Automation and Control Processes FEB RAS Vladivostok Russia. vss@iacp.dvo.ru. Institute of Automation and Control Processes FEB RAS Vladivostok Russia. Far Eastern Federal University Vladivostok Russia. National Scientific Centre of Marine Biology FEB RAS Vladivostok Russia. Institute of Chemistry FEB RAS Vladivostok Russia.

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Features of development and using interuniversity scientific and educational network «SYNERGY» for training of engineers in the field of automation, robotics and mechatronic systems

EAI Endorsed Transactions on Energy Web

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EAI Endorsed Transactions on Energy Web 2018年第19期18卷

作者： Bobryakov, A.V. Filaretov, V.F. Homchenko, V.G. Kabanov, A.A. Katalinic, B. Pryanichnikov, V.E. Stazhkov, S.M. Zuev, A.V. National Research University 'Moscow Power Engineering Institute' Moscow Russia Far Eastern Federal University Institute of Automation and Control Processes FEB RAS Vladivostok Russia Omsk State Technical University Omsk Russia Sevastopol National Technical University Sevastopol Russia Vienna University of Technology and DAAAM International Vienna Austria Institute of Applied Mathematics of M.V. Keldysh RAS Moscow Russia Baltic State Technical University 'VOENMEH' of D.F. Ustinov St. Petersburg Russia

This paper describes a features of development and using of interuniversity scientific and educational network «Synergy» for training of engineers in the field of automation, robotics and mechatronic systems. This network provides: 1)giving of distance lectures by leading professors;2) carrying out of laboratory classes with remote using laboratoryfacilities;3) remote education on project design based on results received during real scientific and commercial projects;4)practices on laboratory and industrial *** in paper, some features of software and hardware implementation for remote work with laboratory and industrial equipment in the network is described. Several examples of laboratory work and project design by students remotely implemented using the network is presented. © 2018 A.V. Bobryakov et al.

关键词： Robotics

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