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ELECTROPHORETIC BEHAVIOR OF HYDROSOLS OF ULTRADISPERSE DIAMOND AND MODIFICATION OF ITS SURFACE [Text] / G. A. CHIGANOVA, V. A. BONDAR, A. S. CHIGANOV // COLLOID JOURNAL OF THE RUSSIAN ACADEMY OF SCIENCES. - 1993. - Vol. 55, Is. 5. - P. 774-775. - Cited References: 5 . - ISSN 1061-933X

РУБ Chemistry, Physical

Аннотация: The method of macro-electrophoresis is used to determine values of the zeta-potential of particles of ultradisperse diamond in solutions of AlCl3. It is shown that an increase in the concentration of aluminum ions to 0.5.10(-4) M leads to a decrease in the negative charge of the diamond particles; the dispersions coagulate in more concentrated solutions of AlCl3. Chemical modification of the surface of ultradisperse diamond by aluminum ions is used to obtain stable hydrosols with positively charged diamond particles.

WOS : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
CHIGANOVA, G.A.; BONDAR, V.A.; CHIGANOV, A.S.

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Destruction of human blood cells in interaction with detonation nanodiamonds in experiments in vitro [Text] / A. P. Puzyr [et al.] // Diam. Relat. Mat. - 2004. - Vol. 13: 9th International Conference on New Diamond Science and Technology (MAR 26-29, 2004, Tokyo, JAPAN), Is. 11.12.2013. - P2020-2023, DOI 10.1016/j.diamond.2004.06.003. - Cited References: 10 . - ISSN 0925-9635

РУБ Materials Science, Multidisciplinary

Кл.слова (ненормированные):
nanodiamonds -- white blood cells -- erythrocytes -- chemiluniscence
Аннотация: In experiments in vitro on human blood, it was shown that nanodianiond (ND) particles change the kinetics of active oxygen generation (AOG), causing white cell destruction and erythrocyte hemolysis. Various mechanisms of the observed effects have been considered. Nanodianionds adapted for biological research and possessing higher colloidal stability make it possible to obtain sterile hydrosols and mixtures with drugs and are more preferable for medical -biological research. We discussed the necessity of experiments in vivo and showed the first results of injection of the adapted nanodianionds to the laboratory animals. (C) 2004 Elsevier B.V. All rights reserved.

Держатели документа:
Russian Acad Sci, Siberian Branch, Inst Biophys, Krasnoyarsk, Russia
Russian Acad Sci, Siberian Branch, Dept Immunol, KSC, Krasnoyarsk, Russia
JSC, Diamond Ctr, Sci Prod Dept, St Petersburg 192076, Russia
ИБФ СО РАН : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Puzyr, A.P.; Neshumayev, D.A.; Tarskikh, S.V.; Makarskaya, G.V.; Dolmatov, V.Y.; Bondar, V.S.

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Nanodiamonds for biological investigations [Text] / V. S. Bondar', A. P. Puzyr' // Phys. Solid State. - 2004. - Vol. 46, Is. 4. - P716-719, DOI 10.1134/1.1711457. - Cited References: 9 . - ISSN 1063-7834

РУБ Physics, Condensed Matter

Аннотация: Nanoparticles with a modified surface are prepared from nanodiamonds produced in Russia. The properties of modified nanodiamonds and their hydrosols and organosols are investigated by biophysicists with the aim of preparing nanoparticles with controlled properties for solving biological problems. (C) 2004 MAIK "Nauka / Interperiodica".

Держатели документа:
Russian Acad Sci, Inst Biophys, Siberian Div, Krasnoyarsk 660036, Russia
ИБФ СО РАН : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Bondar', V.S.; Puzyr', A.P.

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Physical and chemical properties of modified nanodiamonds [Text] / A. P. Puzyr [et al.] ; ed.: DM Gruen, OA Shenderova, erova, OA She // Synthesis, Properties and Applications of Ultrananocrystalline Diamond. Ser. NATO SCIENCE SERIES, SERIES II: MATHEMATICS, PHYSICS AND CHEMISTRY : SPRINGER, 2005. - Vol. 192: NATO Advanced Research Workshop on Synthesis, Properties and Applications of Ultrananocrystalline Diamond (JUN 07-10, 2004, St Petersburg, RUSSIA). - P261-270. - Cited References: 15 . - ISBN 1-4020-3320-6

РУБ Chemistry, Physical + Materials Science, Multidisciplinary

Кл.слова (ненормированные):
nanodiamond -- modified nanodiamonds -- hydrosols -- colloidal stability -- electrophoresis -- powder fractioning -- precursors for CVD -- electron field emission
Аннотация: A unique technology of nanodiamond surface modification is suggested which allows to separation of commercial nanodiamond powders into two fractions (F1 and 172), each possessing absolutely new properties as compared to the initial powder. F1 and F2 differ in size characteristics. Initial and modified nanodiamonds contain iron impurities and two types of nondiamond carbon. The color of the powders and hydrosols does not correlate with the content of non-diamond carbon. According to the EPR data, modified nanodiamonds possess a high level of diamond matrix shielding, and the extracted fractions differ in width of the basic transition area and in the SHF energy adsorption ratio. Due to this, F1 can be applied as precursors for CVD growth of nanocrystalline diamond and as field electron emission tips.

Держатели документа:
RAS, Inst Biophys SB, Krasnoyarsk 660036, Russia
ИБФ СО РАН : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Puzyr, A.P.; Bondar, V.S.; Bukayemsky, A.A.; Selyutin, G.E.; Kargin, V.F.; Gruen, DM \ed.\; Shenderova, OA \ed.\; She, erova, OA \ed.\

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Nonlinear scattering of light in nanodiamond hydrosol [Text] / G. M. Mikheev [et al.] // Tech. Phys. Lett. - 2010. - Vol. 36, Is. 4. - P358-361, DOI 10.1134/S1063785010040206. - Cited References: 16. - Thus study was supported by the Ural and Siberian Branches of the Russian Academy of Sciences within the framework of the Integration Project no. 102 "Investigation of Optoelectronic and Nonlinear Optical Properties of Carbon Nanostructures and Their Suspensions." . - ISSN 1063-7850

РУБ Physics, Applied
Рубрики:
ONION-LIKE CARBON
   Z-SCAN
   NANOPARTICLES
   SUSPENSIONS
   NANOTUBES
Аннотация: The nonlinear scattering of light under the conditions of optical limiting of nanosecond pulsed laser radiation at a wavelength of 1064 nm in a nanodiamond (ND) hydrosol has been experimentally studied. Superstable hydrosols were obtained from detonation NDs with a modified surface. Using an improved scheme of z scanning, it is shown that a decrease in the optical transmission coefficient of an ND hydrosol under optical limiting conditions is due to enhanced nonlinear scattering. It is established that the energy of pulsed radiation scattered at a right angle obeys a power law in dependence on the energy density of incident radiation pulses. Hydrosols of detonation NDs with the modified surface exhibit high stability with respect to the periodic laser action at high power density.

Держатели документа:
[Mikheev, G. M.] Russian Acad Sci, Inst Appl Mech, Ural Branch, Izhevsk 426067, Udmurtia, Russia
Russian Acad Sci, Siberian Branch, Inst Biophys, Krasnoyarsk 660036, Russia
ИБФ СО РАН : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Mikheev, G.M.; Puzyr', A.P.; Vanyukov, V.V.; Purtov, K.V.; Mogileva, T.N.; Bondar', V.S.

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Modification and comparative study of commercial nanodiamonds / A. P. Puzyr, A. E. Burov, V. S. Bondar // Fullerenes Nanotubes Carbon Nanostruct. - 2015. - Vol. 23, Is. 2. - P93-97, DOI 10.1080/1536383X.2013.794338 . - ISSN 1536-383X
Кл.слова (ненормированные):
colloidal stability -- detonation nanodiamond -- surface modification -- Detonation -- Powders -- Stability -- Surface treatment -- Suspensions (fluids) -- Aqueous suspensions -- Colloidal Stability -- Comparative studies -- Detonation nanodiamond -- Elemental compositions -- Particles size distribution -- Sedimentation stability -- Surface impurities -- Nanodiamonds
Аннотация: Detonation nanodiamond powders produced by different manufacturers were surface modified to reduce the amount of surface impurities and impart to the particles a high colloidal stability in aqueous suspensions. Modified DNDs (MDNDs) were separated into fractions and evaluated by the zeta potential, particles size distribution and elemental composition. MDNDs retain colloidal stability after the hydrosols are dried and the resulting powders are resuspended. Sedimentation stability and fraction composition are proposed as parameters for standardization of commercial nanodiamonds. © 2015 Copyright © Taylor & Francis Group, LLC.

Scopus
Держатели документа:
Institute of Biophysics SB RAS, Krasnoyarsk, Russian Federation
Special Design-Technology Bureau nauka KSC SB RAS, Russian Federation : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Puzyr, A.P.; Burov, A.E.; Bondar, V.S.

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Optical limiting in suspension of detonation nanodiamonds in engine oil / K. G. Mikheev [et al.] // J. Nanophoton. - 2017. - Vol. 11, Is. 3. - P113258162, DOI 10.1117/1.JNP.11.032502 . - ISSN 1934-2608
Кл.слова (ненормированные):
Ambient temperature -- Detonation nanodiamonds -- Engine oil -- Optical limiting -- Optical limiting threshold -- Suspension -- Cluster analysis -- Detonation -- Engines -- Laser excitation -- Lubricating oils -- Nanoparticles -- Q switching -- Suspensions (fluids) -- Temperature -- Detonation nanodiamond -- Detonation nanodiamonds -- Engine oil -- Incident radiation -- Nanoparticle clusters -- Optical limiting -- Passive Q-switching -- Wide temperature ranges -- Nanodiamonds
Аннотация: The optical limiting (OL) of detonation nanodiamond (DND) suspensions in engine oil was studied at a temperature range of 20°C to 100°C. Oil suspensions were prepared on the basis of the DNDs with an average nanoparticle cluster size in hydrosols (Daver) of 50 and 110 nm. Raman spectroscopy was used to characterize the samples. The OL investigation was carried out by the z-scan technique. The fundamental (1064 nm) and second (532 nm) harmonic radiations of YAG:Nd3 laser with passive Q-switching as an excitation source were used. The OL thresholds for both suspensions at 532 and 1064 nm were determined. It is shown that a decrease in the average nanoparticle cluster size as well as an increase of the wavelength of the incident radiation leads to the OL threshold increase. It is established that the OL performance is not influenced by increasing the temperature from 20°C to 100°C. The results obtained show the possibility of using the DNDs suspensions in engine oil as an optical limiter in a wide temperature range. © 2017 Society of Photo-Optical Instrumentation Engineers (SPIE).

Scopus,
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WOS
Держатели документа:
Institute of Mechanics Ural Branch RAS, 34, T. Baramzinoy Street, Izhevsk, Russian Federation
Institute of Biophysics Siberian Branch of RAS, 50/50, Akademgorodok, Krasnoyarsk, Russian Federation

Доп.точки доступа:
Mikheev, K. G.; Krivenkov, R. Yu.; Mogileva, T. N.; Puzyr, A. P.; Bondar, V. S.; Bulatov, D. L.; Mikheev, G. M.

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