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Remote Measurement of Organic Nanoparticles Sizes by Laser Correlation Technique

Pacific Science Review 2014年第1期16卷 68-70页

作者： Natalia P. Podolian Oleg B. Vitrik Yuri N. Kulchin Institute of Automation and Control Processes FEB RAS Russia Far Eastern Federal University Russia

This paper presents the possibility of real-time measurement of the diameter of pectin particles during their jellification using an optical correlation method based on the spatial averaging of data.

关键词： Pectin particles Jellification Dynamic light scattering Spatial averaging

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Electronic band structure of a Tl/Sn atomic sandwich on Si(111)

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Physical Review B 2015年第3期91卷 035421-035421页

作者： D. V. Gruznev L. V. Bondarenko A. V. Matetskiy A. Y. Tupchaya A. A. Alekseev C. R. Hsing C. M. Wei S. V. Eremeev A. V. Zotov A. A. Saranin Institute of Automation and Control Processes FEB RAS 690041 Vladivostok Russia School of Natural Sciences Far Eastern Federal University 690000 Vladivostok Russia Institute of Atomic and Molecular Sciences Academia Sinica P.O. Box 23-166 Taipei Taiwan Institute of Strength Physics and Material Science 634021 Tomsk Russia Tomsk State University 634050 Tomsk Russia Department of Electronics Vladivostok State University of Economics and Service 690600 Vladivostok Russia

A two-dimensional compound made of one monolayer of Tl and one monolayer of Sn on Si(111) has been found to have a sandwichlike structure in which the Sn layer (having the milk-stool arrangement) resides on the bulklike terminated Si(111) surface and the Tl layer (having the honeycomb-chained-trimer arrangement) is located above the Sn layer. The electronic band structure of the compound contains two spin-split surface-state bands, of which one is nonmetallic and the other is metallic. Near the Fermi level the metallic band is split with the momentum splitting Δk∥=0.037 Å−1 and energy splitting ΔEF=167 meV. The steep dispersion of the band when crossing the Fermi level corresponds to an electron velocity of ≈8.5×105 m/s, which is comparable to the value reported for graphene. The 2D Fermi contours have almost circular shape with spin texture typical for hexagonal surfaces.

关键词： ELECTRONIC band structure FERMI level SURFACE states MOMENTUM spectra VELOCITY GRAPHENE

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Surface plasmon polaritons in standard optical fibres with a metallised cladding

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Pacific Science Review 2014年第1期16卷 71-74页

作者： Yuri N. Kulchin Oleg B. Vitrik Аnton V. Dyshlyuk Institute of Automation and Control Processes FEB RAS Russia Far Eastern Federal University Vladivostok Russia

A numerical study is presented of a novel approach to fibre optic SPR-sensor development for biosensing applications. The proposed technique is based on a standard SMF-28 type bent single-mode optical fibre with a thin metal film applied to its optical cladding. It was shown that by adjusting the curvature radius and the metal film thickness, one can achieve effective coupling between the fundamental mode of the fibre and the surface plasmon mode supported by the metal/surrounding medium interface through the meditation of whispering gallery modes propagating along the bent inner surface of the fibre cladding. This effect is demonstrated to enable refractometric measurements, both in the wavelength and in the intensity-modulated regimes, with a resolution of up to 10-8 RIU. The use of standard noise reduction techniques for intensity-modulated optical signals promises further increase in accuracy.

关键词： Surface plasmon resonance Biosensing Precision refractometry

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Laser-assisted nanostructuring of metal films by means of a fibre dielectric microprobe

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Pacific Science Review 2014年第1期16卷 62-67页

作者： Alexander A. Kuchmizhak Oleg B. Vitrik Yuri N. Kulchin Optoelectronics Lab. Institute of Automation and Control Processes FEB RAS Russia Far Eastern Federal University FEFU Russia

A simple apertureless dielectric microprobe in the form of a section of the tapered optical fibre was proposed for surface laser nanomodification. This probe enables surface λ /2-localisation of laser beam, as demonstrated both numerically and experimentally. The controllable formation of single through nanoholes with the minimum size down to 35 nm (∼ λ /15) in the 50-nm Au/Pd film was shown using this probe and a 532-nm pump nanosecond laser. We also report for the first time on the formation of micro- and nanobumps, jet-like microstructures and microholes on optically thick gold films using single nanosecond laser pulses focused through the fibre dielectric apertureless probe. Both the shape and the sizes of the obtained microstructures were demonstrated to be determined by the pulse energy and film thickness.

关键词： Laser-assisted nanostructuring Nanosecond laser pulses Fibre apertureless microprobe

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Fabrication of porous metal nanoparticles and microbumps by means of nanosecond laser pulses focused through a fibre microaxicon

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Pacific Science Review 2014年第1期16卷 55-61页

作者： Alexander A. Kuchmizhak Oleg B. Vitrik Yuri N. Kulchin Optoelectronics Lab. Institute of Automation and Control Processes FEB RAS Russia Far Eastern Federal University FEFU Russia

We present a novel optical element: a fibre microaxicon (FMA) for laser radiation focussing into a diffraction-limited spot with a Bessel-like profile as well as for precision laser nanostructuring of metal film surfaces. Using the developed FMA for single-pulse irradiation of Au/Pd metal films on a quartz substrate, we demonstrated the formation of submicron hollow microbumps, each with a small spike atop it as well as hollow spherical nanoparticles. The experimental conditions for the controllable and reproducible formation of ordered arrays of such microstructures were defined. The internal structure of the fabricated nanoparticles and nanobumps was experimentally studied using both argon-ion polishing and scanning electron microscopy. These methods revealed a porous inner structure of laser-induced nanoparticles and nanobumps, which presumably indicates that a subsurface boiling of the molten metal film is a key mechanism determining the formation process of such structures.

关键词： Laser-assisted nanostructuring Nanosecond laser pulses Fibre microaxicon

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Atomic structure and electronic properties of the two-dimensional (Au,Al)/Si(111)2×2 compound

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Physical Review B 2015年第24期92卷 245407-245407页

作者： D. V. Gruznev L. V. Bondarenko A. V. Matetskiy A. Y. Tupchaya E. N. Chukurov C. R. Hsing C. M. Wei S. V. Eremeev A. V. Zotov A. A. Saranin Institute of Automation and Control Processes FEB RAS 5 Radio Street 690041 Vladivostok Russia School of Natural Sciences Far Eastern Federal University 690950 Vladivostok Russia Institute of Atomic and Molecular Sciences Academia Sinica P.O. Box 23-166 Taipei Taiwan Institute of Strength Physics and Materials Science 634021 Tomsk Russia Tomsk State University 634050 Tomsk Russia Department of Electronics Vladivostok State University of Economics and Service 690600 Vladivostok Russia

A combination of scanning tunneling microscopy, angle-resolved photoelectron spectroscopy, ab initio random structure searching, and density functional theory electronic structure calculations was applied to elucidate the atomic arrangement and electron band structure of the (Au,Al)/Si(111)2×2 two-dimensional compound formed upon Al deposition onto the mixed 5×2/3×3 Au/Si(111) surface. It was found that the most stable 2×2-(Au, Al) compound incorporates four Au atoms, three Al atoms, and two Si atoms per 2×2 unit cell. Its atomic arrangement can be visualized as an array of meandering Au atomic chains with two-thirds of the Al atoms incorporated into the chains and one-third of the Al atoms interconnecting the chains. The compound is metallic and its electronic properties can be controlled by appropriate Al dosing since energetic location of the bands varies by ∼0.5eV during increasing of Al contents. The 2×2-(Au, Al) structure appears to be lacking the C3v symmetry typical for the hexagonal lattices. The consequence of the peculiar atomic structure of the two-dimensional alloy is spin splitting of the metallic states, which should lead to anisotropy of the current-induced in-plane spin polarization.

关键词： ATOMIC structure SILICON compounds SCANNING tunneling microscopy DENSITY functional theory ELECTRONIC structure ELECTRIC properties of metals

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Terbium Complex Triboluminophore for Optical Sensorics

Terbium Complex Triboluminophore for Optical Sensorics

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2014 2nd International Conference on Future Materials Engineering and Industry Application(ICFMEIA 2014)

作者： NAGORNY Ivan MIROCHNIK Anatolii SHISHOV Alexander ZHIKHAREVA Polina BABIY Michail ROMASHKO Roman School of Natural Sciences Far-Eastern Federal University Institute of Automation and Control Processes FEB RAS Institute of Chemistry FEB RAS Stoletia Vladivostokaave.

Triboluminescence properties of chemical compound based on Terbium（Ⅲ）-Tb（АА） Phen- are studied by means of new experimental technique developed in this workIt is found that the synthesized complex manifests 20% higher integral intensity of triboluminescence in comparison with that for compound based on Europium（Ⅲ） –ТЕА[Eu（DBM）] which is one of best triboluminophores in the visible spectral range.

关键词： Triboluminescence Triboluminophores Europium Terbium

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The development of system of accommodation to faults of navigation sensors of underwater vehicles with resistance to disturbance

The development of system of accommodation to faults of navi...

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International Conference on control, automation and Systems ( ICCAS)

作者： Vladimir Filaretov Alexey Zhirabok Alexander Zuev Alexander Procenko Far Eastern Federal University Vladivostok Russia Institute of Automation and Control Processes FEB RAS Vladivostok Russia

ISBN: (纸本)9781479960514

In this paper, a new approach for synthesis of system of accommodation to faults of navigation sensors of underwater vehicles (UV) is developed and investigated. Proposed system is synthesized by using kinematic model of UV and data fusion of sensors signals. The advantage of this approach is that it allows detecting and isolating faults in sensors of UV and operatively to compensate their effects at performance of underwater missions in unknown environment with unknown external disturbances, including noised sensor signals.

关键词： Navigation Equations Mathematical model Sensors Vehicle dynamics

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Evaluation of Nonlinear Inferential Models to Estimate the Products Quality of Industrial Distillation Process

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IFAC Proceedings Volumes 2014年第3期47卷 1284-1289页

作者： G. Digo N. Digo I. Mozharovskii A. Torgashov Institute of automation and control processes Far Eastern Branch of RAS Vladivostok Russia 690041

The problem of improvement of existing approaches for evaluation of inferential models used in the advanced process control systems is considered. The method of finding the identifiability index limit, based on the physically-chemical essence of the industrial distillation process, for the inferential models containing nonlinear transformations of measured inputs is given. The problem of handling the narrow variability range of key inputs in the training sample is considered. The paper contains the example of evaluating the inferential models based on the proposed method applied to the nonlinear industrial distillation plant.

关键词： quality control process models identifiability distillation columns

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Some marine trial results of a new method for AUV trajectory motion control

Some marine trial results of a new method for AUV trajectory...

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OCEANS

作者： V. F. Filaretov D. A. Yukhimets E. Sh. Mursalimov A. F. Scherbatyuk I. E. Tuphanov Far Eastern Federal University (FEFU) Vladivostok Russia Institute of Automation and Control Processes (IACP) FEB RAS Vladivostok Russia Institute for Marine Technology Problems (IMTP) FEB RAS Vladivostok Russia

Some results of a new tracking control method investigation using an autonomous underwater vehicle (AUV) is considered in this paper. This method involves additional loops for automatic program signals generation in AUV control system (CS). The work of these additional loops provides the AUV motion along the desired spatial trajectory with high velocity and desired accuracy. The features of the proposed CS realization and results of experimental researches are presented.

关键词： Trajectory Tracking Accuracy Splines (mathematics) Navigation Vectors

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