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International Conference on Laser Optics

作者： Alexei A. Kamshilin Laboratory 24 Institute of Automation and Control Processes FEB RAS Vladivostok Russia

ISBN: (数字)9798350390674

ISBN: (纸本)9798350390681

In this work, responses of cortical vessels to the administration of a metabolic agent were measured in rats using contactless imaging photoplethysmography and laser speckle contrast imaging systems providing full field of view visualization of the blood flow. It was found that blood-flow changes detected by two systems differ significantly due to different nature of the interaction of light with tissues underlying these methods.

关键词： Visualization Lasers Imaging Measurement by laser beam Speckle Rats Photoplethysmography

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Formation control of AUV on the Base of Visual Tracking of AUV-Leader

Formation Control of AUV on the Base of Visual Tracking of A...

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2021 International Russian automation Conference, RusAutoCon 2021

作者： Filaretov, Vladimir Yukhimets, Dmitry Institute of Automation and Control Processes Feb Ras Robotics Laboratory Vladivostok Russia Institute of Marine Technology Problem Feb Ras Institute of Automation and Control Processes Feb Ras Vladivostok Russia

ISBN: (纸本)9780738131566

In this paper, a method for the synthesis of a group control system for AUV moving in the leader-follower mode was proposed. The position of the follower relative to the leader is proposed to be determined using an on-board video camera, which recognized the light beacons installed on the leader's body. The obtained information is used to form an estimate of the position of the target point in the coordinate system of the follower with a frequency sufficient for the implementation of high-precision robust control systems. A method for synthesizing a control system that provides a desired quality of control independently from changes in the parameters of the AUV-follower was proposed. The results of mathematical simulation confirmed the high quality of control provided by the proposed system. © 2021 IEEE.

关键词： Computer vision

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Femtosecond Laser-Induced Periodic Surface Structures Formation on optical fibers

Femtosecond Laser-Induced Periodic Surface Structures Format...

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2024 International Conference Laser Optics, ICLO 2024

作者： Bronnikov, Kirill Gladkikh, Semyon Terentiev, Vadim Simonov, Victor Mikerin, Sergey Babin, Sergey Kuchmizhak, Aleksandr Dostovalov, Alexander Institute of Automation and Electrometry of the Sb Ras Novosibirsk Russia ITMO University Saint-Petersburg Russia Institute of Automation and Control Processes of the Feb Ras 5 Radio St Vladivostok690041 Russia Far Eastern Federal University Pacific Quantum Center Vladivostok690041 Russia

ISBN: (纸本)9798350390674

Highly regular thermochemical laser-induced periodic surface structures (TLIPSS) were produced on the thin Ti metal film deposited on a curved side surface of optical fiber using femtosecond IR laser pulses. The significant dependence of structures regularity on the laser polarization direction relative to the fiber axis was revealed. Results of TLIPSS formation on fiber tip and their practical applications are presented. © 2024 IEEE.

关键词： Femtosecond lasers

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2D Laser-Induced Periodic Surface Structures Formation on Thin Metal Films by Femtosecond Laser Radiation

2D Laser-Induced Periodic Surface Structures Formation on Th...

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2024 International Conference Laser Optics, ICLO 2024

作者： Bronnikov, K. Gladkikh, S. Mikerin, S. Terentiev, V. Simonov, V. Kuchmizhak, A. Dostovalov, A. Institute of Automation and Electrometry of the Sb Ras Novosibirsk Russia ITMO University Saint-Petersburg Russia Institute of Automation and Control Processes of the Feb Ras 5 Radio St. Vladivostok690041 Russia Far Eastern Federal University Pacific Quantum Center Vladivostok690041 Russia

D(grid and honeycomb) highly regular thermochemical laser-induced periodic surface structures (TLIPSS) were produced on Ti, Cr and Hf thin metal film (30100 nm) deposited on a glass substrate using femtosecond IR lase... 详细信息

ISBN: (纸本)9798350390674

关键词： Laser materials processing

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Comparison of Structure, Transport Properties and Thermoelectric Power Efficiency of Thin CrSi and CoSi Films on Si(111) and Si(100) Substrates

Comparison of Structure, Transport Properties and Thermoelec...

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IEEE International Conference on Electrical Engineering and Photonics (EExPolytech)

作者： Dmitrii L. Goroshko Konstantin N. Galkin Evgenii. Yu. Subbotin Olga A. Goroshko Semen A. Balagan Andrey M. Maslov Igor M. Chernev Oleg V. Kropachev Dmitrii A. Khoroshilov Sergei A. Dotsenko Nikolay G. Galkin Optics and Electrophysics Laboratory Institute of Automation and Control Processes of FEB RAS Vladivostok Russia

ISBN: (数字)9798350388879

ISBN: (纸本)9798350388886

The paper compares the formation conditions, crystal structure, conductivity, and thermoelectric properties of thin CrSi and CoSi films on silicon substrates with (111) and (100) orientations. It is found that, despite the insufficiently good conductivity, the films have a noticeable Seebeck coefficient (up to 70 μV/K) in the temperature range of 200-450 K: positive for CrSi and negative for CoSi. The maximum power factor is estimated at 2 to 3 mW/(m2×K). For CoSi, first-principles calculations of the phonon structure and lattice thermal conductivity are performed, including in the form of nanowires. Estimates are made for the achievable dimensionless thermoelectric figure of merit of CoSi thin films: ZT=0.40–0.50 T=200-450 K.

关键词： Temperature distribution Reactive power Films Lattices Crystals Conductivity Thermal conductivity Silicon Nanowires Substrates

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Formation, Phonon Structure, Transport and Thermoelectric Properties of Multilayer Heterostructures Si/NC β-FeSi2/Si/ NC β-FeSi2/…/Si(111) and Si/NC α-FeSi2/Si/ NC α-FeSi2/…/Si(111)

Formation, Phonon Structure, Transport and Thermoelectric Pr...

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IEEE International Conference on Electrical Engineering and Photonics (EExPolytech)

作者： Konstantin N. Galkin Oleg V. Kropachev Olga A. Goroshko Evgenii. Yu. Subbotin Igor M. Chernev Dmitrii A. Khoroshilov Dmitrii L. Goroshko Nikolay G. Galkin Optics and Electrophysics Laboratory Institute of Automation and Control Processes of FEB RAS Vladivostok Russia

ISBN: (数字)9798350388879

ISBN: (纸本)9798350388886

Multilayer (4 and 8 layers) samples with embedded β-FeSi 2 and α-FeSi 2 nanocrystals (NCs) on silicon-on-insulator (SOI) substrates with (100) orientation and p-type conductivity have been grown. It has been established from Raman data that β-FeSi 2 NCs are formed with small portions of iron (0.5 nm) deposited at room temperature and annealed at T = 630°C with subsequent overgrowing with silicon, and α-FeSi 2 NCs are formed after short-term annealing at T = 1000°C and overgrowing with silicon. The effect of doping of intermediate silicon layers on the conductivity and Seebeck coefficient in multilayers (4 and 8) in the temperature range of 80–450 K was studied. It was shown that with maximum doping of intermediate layers (1019 cm -3 ) with the number of layers equal to 8, the maximum Seebeck coefficient 600 μV/K and the maximum power factor 2.5 mW/(m×K2) were observed at T= 450 K, which is due to the contribution of injected holes from β-FeSi 2 nanocrystals.

关键词： Resistance Reactive power Temperature distribution Annealing Nanocrystals Silicon-on-insulator Nonhomogeneous media Silicon Laser beams Substrates

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Description and fault diagnosis in autonomous underwater vehicles based on ontologies

Description and fault diagnosis in autonomous underwater veh...

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2022 International Conference on Ocean Studies, ICOS 2022

作者： Alexander, Timoshenko Alexander, Zuev Eduard, Mursalimov Valeria, Gribova Alexander, Inzartsev Far Eastern Federal University Institute of Marine Technology Problems Feb Ras Laboratory of Intelligent Systems for Marine Robots Department of Automation and Robotics Vladivostok Russia Institute of Automation and Control Feb Ras Laboratory of Intelligent Systems Vladivostok Russia Institute of Marine Technology Problems Feb Ras Laboratory of Control Systems Vladivostok Russia

ISBN: (纸本)9781665473729

The paper proposes new ontologies for describing and diagnosing malfunctions of subsystems of autonomous underwater vehicles (AUV) as a part of the development of a previously created approach to the intelligent diagnosis of these vehicles using knowledge bases. To implement this approach, it is proposed to use two knowledge bases, one of which describes malfunctions, features for their identification and actions necessary to adapt to the negative consequences caused by the appearance of these malfunctions. The other database contains information about the main subsystems of the AUV, devices and replaceable modules, as well as the states they may be in. Knowledge bases are used in the work of the intelligent control-emergency system (ICES) on board the AUV, which allows for comprehensive functional diagnostics of all subsystems of the device, including payload modules, as well as adaptation to the consequences of emerging malfunctions, taking into account the actual cause-and-effect relationships between them. To test the system's operability, a prototype was developed. The results of the prototype simulation showed that ICES performs the tasks and can be implemented on the onboard computers of existing AUV using well-known programming technologies. © 2022 IEEE.

关键词： Autonomous underwater vehicles

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Development of a Dynamic Model of an Underwater Manipulator in Identification Form 9th

Development of a Dynamic Model of an Underwater Manipulator ...

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9th International Conference on Interactive Collaborative robotics, ICR 2024

作者： Filaretov, Vladimir Zuev, Aleksandr Timoshenko, Aleksandr Institute of Automation and Control Processes FEB RAS 5 Radio St. Vladivostok690041 Russia M.D. Ageev Institute of Marine Technology Problems FEB RAS 5a Sukhanova St Vladivostok690091 Russia Far Eastern Federal University 12/2 Mordovtseva St. Vladivostok690091 Russia

ISBN: (纸本)9783031713590

The paper proposes a new method for constructing dynamic models of underwater manipulators installed on board autonomous underwater vehicles. These models are designed to identify unknown parameters of the interaction of an underwater manipulator with a viscous medium during its movement. A feature of these models is that unknown parameters, including coefficients of added masses and damping coefficients, are included in the equations of dynamics of the manipulator linearly relative to known kinematic parameters. These coefficients can be determined using classical identification methods such as the least squares method or methods based on the application of the linear Kalman filter. The identified parameters can then be used in adaptive underwater manipulator control systems to implement automatic execution of underwater technological operations. To do this, the identification procedure must be carried out in close proximity to the intended working area of the underwater vehicle with a manipulator, where the desired coefficients can be considered constant. The correctness of the proposed models and the possibility of identifying these coefficients were verified during mathematical simulation of the movement of an underwater vehicle with a manipulator mounted on it at various initial parameters of a viscous medium. © The Author(s), under exclusive license to Springer Nature Switzerland AG 2024.

关键词： Kalman filters

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Luminescent Properties of Nanocomposites Based on Porous Silicon, Nickel, and Nickel Oxide in the Photon Energy Range of 1.4 - 2.9 eV

Luminescent Properties of Nanocomposites Based on Porous Sil...

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2022 International Conference on Electrical Engineering and Photonics, EExPolytech 2022

作者： Galkin, Nikolay G. Yan, Dmitrii T. Galkin, Konstantin N. Nepomnyaschiy, Aleksandr V. Goroshko, Dmitrii L. Institute of Automation and Control Processes of Feb Ras Optics and Electrophysics Laboratory Vladivostok Russia Far Eastern State Transport University Department of Physics and Theoretical Mechanics Khabarovsk Russia Institute of Automation and Control Processes of Feb Ras Laboratory of Laser Methods for Studying Substances Vladivostok Russia

ISBN: (数字)9781665490306

ISBN: (纸本)9781665490306

This paper presents the results of studying the effect of time (5, 6, 7, and 8 minutes) of nickel electrodeposition (Ni ED) at room temperature and annealing at 450°C in an argon atmosphere on the structure, composition, and photoluminescent (PL) properties of mesoporous silicon (meso-PS) and its nanocomposite with Ni (meso-PS/Ni). The SEM and EDX spectroscopy data showed the predominant concentration of Ni on the surface and an insignificant concentration in the near-surface region of the meso-PS. According to Raman and PL spectroscopy data, it was established that after Ni ED in a NiCl2 solution, nickel sub oxide (NiOx) with a band gap of up to 2.8 e V is formed in the meso-PS surface layer, which, after short-term annealing (5 and 6 min), is transformed into nickel monoxide nanocrystals (NiO), which leads to a strong (0.2 - 0.9 eV) 'blue' shift of the PL maximum (2.4-2.6 eV) of the nanocomposite with meso-PS/Ni with a multiple increase in the PL amplitude. With an increase in the time of Ni ED and storage in air, NiOx, is not formed, and the detected significant (2-18 times) increase in the PL amplitude with a small 'red' shift of 0.05-0.1 eV is presumably associated with the formation of radiative recombination centers in the form of ions Ni in the meso-PS matrix. Annealing in argon in this case leads to a decrease in the PL intensity without shifting the PL maxima. © 2022 IEEE.

关键词： Digital storage

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Plumbene layer grown on Si(111)3×3−B and its restructuring by Mg adsorption

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Physical Review B 2025年第12期111卷 125401-125401页

作者： A. N. Mihalyuk L. V. Bondarenko A. Y. Tupchaya Y. E. Vekovshinin N. V. Denisov D. V. Gruznev A. V. Zotov A. A. Saranin Institute of Automation and Control Processes FEB RAS 690041 Vladivostok Russia Institute of High Technologies and Advanced Materials Far Eastern Federal University 690950 Vladivostok Russia

Using scanning tunneling microscopy observations, the Si(111)3×3−B surface was experimentally proved to be a suitable substrate for hosting high-buckled plumbene. Magnesium (Mg) adsorbed onto the grown plumbene intercalates between the Pb layer and Si(111)3×3−B substrate to form the Pb/Mg/Si(111):B atomic sandwich. Meanwhile, the Pb layer undergoes significant transformations: its original coverage of 2.0 monolayers (ML) reduces to 1.33 ML of Pb, as revealed via the density functional theory (DFT) ab initio random structure search analysis. The layer is arranged in a striped 3×1 structure, which, together with the substrate, adopts the overall 3×3 periodicity. DFT analysis of the band structures of the grown Pb layers revealed that they might possess unique electronic properties. However, the intrinsic properties of the layers appear to be overshadowed by the electronic properties of the real Si(111):B substrate, which underwent a strong subsurface p−type doping. The dominated contribution of the substrate bands to the electronic properties was confirmed in the in situ low-temperature transport measurements, which showed that the Si(111):B substrate with and without plumbene, as well as Pb/Mg/Si(111):B samples, display very similar conductivity values. The obtained results demonstrate that, while considering possible applications, the substrate hosting the prospective low-dimensional structures (e.g., two-dimensional Xenes) must meet not only the structural but also the electronic requirements.

关键词： Scanning tunneling microscopy

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