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Saturable absorption in aqueous suspensions of detonation nanodiamonds under irradiation with femtosecond laser pulses / G. M. Mikheev [et al.] // Tech. Phys. Lett. - 2015. - Vol. 41, Is. 12. - P1163-1166, DOI 10.1134/S1063785015120263 . - ISSN 1063-7850
Аннотация: The phenomenon of saturable absorption has been observed in aqueous suspensions of detonation nanodiamonds (DNDs) with 34, 50, and 110 nm sized clusters of nanoparticles under irradiation with 795-nm laser pulses of 120-fs duration. The saturable absorption intensity has been studied as a function of the DND concentration in suspension. At a concentration of 2 wt % of DNDs with 50-nm average cluster size, the saturable absorption intensity amounts to 950 GW/cm2. © 2015, Pleiades Publishing, Ltd.

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Держатели документа:
Institute of Mechanics, Ural Branch, Russian Academy of Sciences, Izhevsk, Russian Federation
Institute of Photonics, University of Eastern Finland, Joensuu, Finland
Institute of Biophysics, Siberian Branch, Russian Academy of Sciences, Krasnoyarsk, Russian Federation

Доп.точки доступа:
Mikheev, G. M.; Vanyukov, V. V.; Mogileva, T. N.; Puzyr’, A. P.; Bondar’, V. S.; Svirko, Y. P.

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Dissolution and mixing of flavin mononucleotide in microfluidic chips for bioassay / K. I. Belousov [et al.] // J. Phys. Conf. Ser. - 2016. - Vol. 741, Is. 1, DOI 10.1088/1742-6596/741/1/012058 . - ISSN 1742-6588
Кл.слова (ненормированные):
Bioassay -- Biomolecules -- Dissolution -- Flow of fluids -- Fluidic devices -- Microfluidics -- Nanostructures -- Optoelectronic devices -- Oscillating flow -- Photonics -- Analysis of liquids -- Concentration distributions -- Constant flow rates -- Flavin mono nucleotides (FMN) -- Flavin mononucleotides -- Frequency of oscillation -- Uniform distribution -- Variable flow rate -- Mixing
Аннотация: Dissolution and mixing of flavin mononucleotide (FMN), which activates a luminescent reaction, were considered in various designs of microfluidic chip for pollution analysis of liquid samples. The aim was to determine the velocity mode of fluid flow ensured the uniform distribution of the FMN in the reaction chamber. Simulation of concentration distribution of FMN in various designs of microfluidic chips was conducted. It was shown that the passive mixing techniques based on the constant flow rate didn't provide mixing of FMN in acceptable time (3 seconds). The most efficient mixing was achieved using variable flow rate with a gradually increasing frequency of oscillation. © Published under licence by IOP Publishing Ltd.

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Держатели документа:
Department of Material Science and Nanotechnology, ITMO University, St. Petersburg, Russian Federation
Department of Biophysics, Siberian Federal University, Krasnoyarsk, Russian Federation
Nanobiotech Lab, St. Petersburg Academic University, St. Petersburg, Russian Federation
Laboratory of Photobiology, Institute of Biophysics SB RAS, Krasnoyarsk, Russian Federation
Laboratory of Information and Measurement Biosensor and Chemosensor Microsystems, Institute for Analytical Instrumentation RAS, St. Petersburg, Russian Federation

Доп.точки доступа:
Belousov, K. I.; Denisov, I. A.; Lukyanenko, K. A.; Yakimov, A. S.; Bukatin, A. S.; Kukhtevich, I. V.; Sorokin, V. V.; Esimbekova, E. N.; Belobrov, P. I.; Evstrapov, A. A.

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Saturable absorption in detonation nanodiamond dispersions / V. Vanyukov [et al.] // J. Nanophoton. - 2017. - Vol. 11, Is. 3, DOI 10.1117/1.JNP.11.032506 . - ISSN 1934-2608
Кл.слова (ненормированные):
Modelocking -- Nanodiamonds -- Nanomaterials -- Nonlinear optics -- Saturable absorption -- Carbon -- Chains -- Dispersion (waves) -- Electromagnetic wave absorption -- Laser excitation -- Laser pulses -- Light -- Light absorption -- Locks (fasteners) -- Nanostructured materials -- Nonlinear optics -- Ultrafast lasers -- Ultrashort pulses -- Yarn -- Aqueous dispersions -- Detonation nanodiamond -- Light-induced -- Modelocking -- Nano-diamond particles -- Non-linear parameters -- Saturable absorption -- Z-scan experiment -- Nanodiamonds
Аннотация: We report on a saturable absorption in aqueous dispersions of nanodiamonds with femtosecond laser pulse excitation at a wavelength of 795 nm. The open aperture Z-scan experiments reveal that in a wide range of nanodiamond particle sizes and concentrations, a lightinduced increase of transmittance occurs. The transmittance increase originates from the saturation of light absorption and is associated with a light absorption at 1.5 eV by graphite and dimer chains (Pandey dimer chains). The obtained key nonlinear parameters of nanodiamond dispersions are compared with those of graphene and carbon nanotubes, which are widely used for the mode-locking. © 2017 Society of Photo-Optical Instrumentation Engineers (SPIE).

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Держатели документа:
Institute of Photonics, University of Eastern Finland, Joensuu, Finland
Hypermemo Ltd., Joensuu, Finland
Institute of Mechanics, Russian Academy of Sciences, Izhevsk, Russian Federation
Federal research center Krasnoyarsk science Center SB RAS, Siberian Branch of RAS, Institute of Biophysics, Krasnoyarsk, Russian Federation
Texas State University, San Marcos, TX, United States
CIC nanoGUNE Consolider, Donostia-San Sebastian, Spain
G Basque Foundation for Science, Ikerbasque, Bilbao, Spain

Доп.точки доступа:
Vanyukov, V.; Mikheev, G.; Mogileva, T.; Puzyr, A.; Bondar, V.; Lyashenko, D.; Chuvilin, A.

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Optical limiting and saturable absorption in nanodiamond suspensions / V. V. Vanyukov, G. M. Mikheev, T. N. Mogileva [et al.] // Carbon-Based Nanoelectromagnetics : Elsevier, 2019. - P61-98, DOI 10.1016/B978-0-08-102393-8.00003-0
Кл.слова (ненормированные):
Nanodiamond -- Nonlinear scattering -- Saturable absorption -- Third-order nonlinear optical phenomena -- Z-scan technique
Аннотация: This chapter reports the experimental investigation of the effects of nonlinear light scattering on optical limiting and saturable absorption in nanodiamond suspensions. The results are obtained by using the nonlinear transmittance and Z-scan techniques, which were combined with the detecting of light pulses scattered in aqueous nanodiamond suspensions. The third-order nonlinear optical response of this material was studied in the nanosecond and femtosecond timescales at the wavelengths of 532, 800, and 1064 nm and within the optical communication window. The obtained results demonstrate that aqueous suspensions of detonation nanodiamonds possess a high ray stability and are attractive for optical limiting applications. The femtosecond Z-scan measurement at the wavelength of 800 nm also revealed a saturable absorption in this nanocarbon material. © 2019 Elsevier Ltd. All rights reserved.

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Держатели документа:
Institute of Photonics, University of Eastern Finland, Joensuu, Finland
Photonics Finland, Joensuu, Finland
Institute of Mechanics, Russian Academy of Sciences, Izhevsk, Russian Federation
Institute of Biophysics, Russian Academy of Sciences, Krasnoyarsk, Russian Federation

Доп.точки доступа:
Vanyukov, V. V.; Mikheev, G. M.; Mogileva, T. N.; Puzyr, A. P.; Bondar, V. S.; Svirko, Y. P.

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