Библиотека института физики им. Л.В. Киренского СО РАН

Главная

Базы данных

Труды сотрудников ИФ СО РАН - результаты поиска

Вид поиска

Каталог книг и брошюр библиотеки ИФ СО РАН

Каталог журналов библиотеки ИФ СО РАН

Труды сотрудников ИФ СО РАН

Область поиска

Формат представления найденных документов:
полный	информационный	краткий

Отсортировать найденные документы по:
автору	заглавию	году издания	типу документа

Поисковый запрос: (<.>K=Coagulation<.>)

Общее количество найденных документов : 4
Показаны документы с 1 по 4

Karpov, S. V.
On coagulation of polydisperse metal nanocolloids and conditions for applicability of the Muller-Smoluchowski theory / S. V. Karpov, P. N. Semina // Colloid J. - 2012. - Vol. 74, Is. 3. - P. 295-304, DOI 10.1134/S1061933X12030040. - Cited References: 15. - Authors are thankful to G. A. Chiganova and A. P. Gavrilyuk for discussions and helpful comments. Studies were carried out with the support of grants: the Presidium of RAS No 29 and No 31, OFN RAS III.9.5, IP SB RAS No 43, IP SB RAS (and SFU) No 101. . - ISSN 1061-933X

РУБ Chemistry, Physical

Аннотация: The regularities of the coagulation of metal nanocolloids with different degrees of polydispersity are studied by the Brownian dynamics method. The results of the numerical calculations of coagulation kinetics are compared with the conclusions of the Muller-Smoluchowski theory. It is revealed that these data deviate from the predictions of the theory upon a decrease in the viscosity of dispersion medium, an increase in the thickness of layers adsorbed on particles, and the combination of these factors. It is demonstrated that no acceleration of the colloid coagulation with a rise in the degree of polydispersity, which is predicted by the theory, takes place under these conditions.

Смотреть статью,
Scopus,
WoS,
Читать в сети ИФ

Публикация на русском языке Карпов, Сергей Васильевич. О коагуляции полидисперсных наноколлоидов металлов и условиях применимости теории Мюллера–Смолуховского [Текст] / С. В. Карпов, П. Н. Сёмина // Коллоид. журн. - М. : Наука, 2012. - Т. 74 № 3. - С. 319-328

Держатели документа:
[Karpov, S. V.
Semina, P. N.] Russian Acad Sci, Kirenskii Inst Phys, Siberian Branch, Krasnoyarsk 660036, Russia
[Karpov, S. V.] Siberian Fed Univ, Krasnoyarsk 660028, Russia

Доп.точки доступа:
Semina, P. N.; Семина, Полина Николаевна; Карпов, Сергей Васильевич
}
Найти похожие

Karpov, S. V.
The role of the electron tunneling effect in the coagulation kinetics of polydisperse metal nanocolloids / S. V. Karpov, P. N. Semina, A. P. Gavrilyuk // Colloid J. - 2012. - Vol. 74, Is. 3. - P. 305-312, DOI 10.1134/S1061933X12030052. - Cited References: 16. - Authors are thankful to G. A. Chiganova for discussions and helpful comments. Studies were carried out with the support of grants: the Presidium of RAS No 29 and No 31, OFN RAS III.9.5, IP SB RAS No 43, IP SB RAS (and SFU) No 101. . - ISSN 1061-933X

РУБ Chemistry, Physical
Рубрики:
PARTICLES
Аннотация: The energy of pair interactions between metal nanoparticles of different sizes is shown to be able to increase upon coagulation due to the additional electrostatic effect resulting from mutual heteropolar charging of the particles. The tunnel electron transfer occurring upon the collisions between particles of different sizes may be the reason for the charging. The transfer is caused by the dependence of the electron work function on the particle size. The electron transfer through the interparticle gap equalizes the Fermi levels in particles of different sizes and is associated with this dependence. Using the example of bimodal silver nanocolloids, it is shown that mutual heteropolar charging of particles with different sizes may accelerate the coagulation of polydisperse colloidal systems by an order of magnitude or more as compared with monodisperse systems, in which this effect is absent.

Смотреть статью,
Scopus,
WoS,
Читать в сети ИФ

Публикация на русском языке Карпов, Сергей Васильевич. Роль электронного туннельного эффекта в кинетике коагуляции полидисперсных наноколлоидов металлов [Текст] / С. В. Карпов, П. Н. Сёмина, А. П. Гаврилюк // Коллоид. журн. - М. : Наука, 2012. - Т. 74 № 3. - С. 329-336

Держатели документа:
[Karpov, S. V.
Semina, P. N.] Russian Acad Sci, Siberian Branch, LV Kirensky Phys Inst, Krasnoyarsk 660036, Russia
[Karpov, S. V.] Siberian Fed Univ, Krasnoyarsk 660028, Russia
[Gavrilyuk, A. P.] Russian Acad Sci, Siberian Branch, Inst Computat Modeling, Krasnoyarsk 660036, Russia

Доп.точки доступа:
Semina, P. N.; Семина, Полина Николаевна; Gavrilyuk, A. P.; Карпов, Сергей Васильевич
}
Найти похожие

Temperature dependent elastic repulsion of colloidal nanoparticles with a polymer adsorption layer / A. P. Gavrilyuk [et al.] // Colloid Polym. Sci. - 2018. - Vol. 296, Is. 10. - P. 1689-1697, DOI 10.1007/s00396-018-4383-y. - Cited References: 49. - The reported research was funded by the Russian Foundation for Basic Research, the government of the Krasnoyarsk territory and Krasnoyarsk Regional Fund of Science, grant 18-42-243023, the RF Ministry of Science and Education, the State contract with Siberian Federal University for scientific research in 2017-2019, and SB RAS Program No II.2P (0358-2015-0010). . - ISSN 0303-402X. - ISSN 1435-1536

РУБ Chemistry, Physical + Polymer Science
Рубрики:
STERICALLY-STABILIZED PARTICLES
DEPLETION FLOCCULATION
AGGREGATION
Кл.слова (ненормированные):
Nanoparticle -- Adsorption layer -- Elastic deformation -- Coagulation -- kinetics -- Elasticity modulus
Аннотация: The model of pairwise elastic repulsion of contacting colloidal nanoparticles with a rigid core and deformable shell is discussed. A simple analytical equation is applied for the energy of elastic repulsion of nanoparticles with arbitrary sizes and the elasticity moduli of self-healing polymer adsorption layers. The model is based on the representation of the absorption layer as a continuous medium that is elastically deformed upon the contact of nanoparticles. The major characteristic of this medium is the elasticity modulus. The magnitude of the elasticity modulus is determined from the condition of balance of the van der Waals attractive forces of nanoparticles and the elastic repulsion of their adsorption layers in the contact area, taking into account the temperature variations. We employed the kinetic approach to describe the dependence of the elasticity modulus on both the temperature and the rate of its change.

Смотреть статью,
Scopus,
WOS,
Читать в сети ИФ
Держатели документа:
RAS, SB, Inst Computat Modeling, Krasnoyarsk 660036, Russia.
Siberian Fed Univ, Inst Math & Comp Sci, Krasnoyarsk 660041, Russia.
Siberian Fed Univ, Lab Nanotechnol Spect & Quantum Chem, Krasnoyarsk 660041, Russia.
RAS, SB, Fed Res Ctr KSC, Kirensky Inst Phys, Krasnoyarsk 660036, Russia.
Siberian State Univ Sci & Technol, Krasnoyarsk 660014, Russia.

Доп.точки доступа:
Gavrilyuk, A. P.; Gerasimov, V. S.; Герасимов, Валерий Сергеевич; Ershov, A. E.; Ершов, Александр Евгеньевич; Karpov, S. V.; Карпов, Сергей Васильевич; Russian Foundation for Basic Research; government of the Krasnoyarsk territory and Krasnoyarsk Regional Fund of Science [18-42-243023]; RF Ministry of Science and Education,; State contract with Siberian Federal University for scientific research in 2017-2019; SB RAS Program [II.2P (0358-2015-0010)]
}
Найти похожие

Physical principles of the formation of a nanoparticle electric double layer in metal hydrosols / A. P. Gavrilyuk [et al.] // Colloid Polym. Sci. - 2020. - Vol. 298, Is. 1. - P. 1-7, DOI 10.1007/s00396-019-04573-8. - Cited References: 25. - The reported research was funded by the Russian Foundation for Basic Research and the government of the Krasnoyarsk territory, Krasnoyarsk Regional Fund of Science, grant No 18-42-243023, the RF Ministry of Education and Science, the State contract with Siberian Federal University for scientific research in 2017–2019. . - ISSN 0303-402X. - ISSN 1435-1536
Кл.слова (ненормированные):
Nanoparticle -- Adsorption layer -- Elastic deformation -- Coagulation kinetics -- Elasticity modulus
Аннотация: The Brownian dynamics method is employed to study the formation of an electrical double layer (EDL) on the metal nanoparticle (NP) surface in hydrosols during adsorption of electrolyte ions from the interparticle medium. Also studied is the charge accumulation by NPs in the Stern layer. To simulate the process of the formation of EDL, we took into account the effect of image forces and specific adsorption, dissipative and random forces, and the degree of hydration of adsorbed ions on the EDL structure. The employed model makes it possible to determine the charge of NPs and the structure of EDL. For the first time, the charge of both the diffuse part of EDL and the dense Stern layer has been determined. A decrease in the electrolyte concentration (below c ˂ 0.1 mol/l) has been found to result in dramatic changes in the formation of the Stern layer.

Смотреть статью,
Scopus,
WOS,
Читать в сети ИФ
Держатели документа:
Institute of Computational Modeling SB RAS, Krasnoyarsk, Russia
Siberian Federal University, Krasnoyarsk, Russia
L. V. Kirensky Institute of Physics, Federal Research Center KSC SB RAS, Krasnoyarsk, Russia
Siberian State University of Science and Technology, Krasnoyarsk, Russia

Доп.точки доступа:
Gavrilyuk, A. P.; Isaev, I. L.; Gerasimov, V. S.; Герасимов, Валерий Сергеевич; Karpov, S. V.; Карпов, Сергей Васильевич
}
Найти похожие