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Название: Kinetics of field-induced phase separation of a magnetic colloid under rotating magnetic fields
Авторы: Raboisson-Michel, M.
Queiros, Campos, J.
Schaub, S.
Zubarev, A.
Verger-Dubois, G.
Kuzhir, P.
Дата публикации: 2020
Издатель: American Institute of Physics Inc.
Библиографическое описание: Kinetics of field-induced phase separation of a magnetic colloid under rotating magnetic fields / M. Raboisson-Michel, J. Queiros Campos, S. Schaub, et al. — DOI 10.1063/5.0023706 // Journal of Chemical Physics. — 2020. — Vol. 153. — Iss. 15. — 0023706.
Аннотация: This paper is focused on the experimental and theoretical study of the phase separation of a magnetic nanoparticle suspension under rotating magnetic fields in a frequency range, 5 Hz ≤ ν ≤ 25 Hz, relevant for several biomedical applications. The phase separation is manifested through the appearance of needle-like dense particle aggregates synchronously rotating with the field. Their size progressively increases with time due to the absorption of individual nanoparticles (aggregate growth) and coalescence with neighboring aggregates. The aggregate growth is enhanced by the convection of nanoparticles toward rotating aggregates. The maximal aggregate length, Lmax ∝ ν-2, is limited by fragmentation arising as a result of their collisions. Experimentally, the aggregate growth and coalescence occur at a similar timescale, ∼1 min, weakly dependent on the field frequency. The proposed theoretical model provides a semi-quantitative agreement with the experiments on the average aggregate size, aggregation timescale, and size distribution function without any adjustable parameter. © 2020 Author(s).
Ключевые слова: AGGREGATES
COALESCENCE
DISTRIBUTION FUNCTIONS
MAGNETIC FIELDS
MAGNETIC NANOPARTICLES
MEDICAL APPLICATIONS
ADJUSTABLE PARAMETERS
BIOMEDICAL APPLICATIONS
INDIVIDUAL NANOPARTICLES
NANOPARTICLE SUSPENSION
NEIGHBORING AGGREGATES
QUANTITATIVE AGREEMENT
ROTATING MAGNETIC FIELDS
THEORETICAL MODELING
PHASE SEPARATION
URI: http://elar.urfu.ru/handle/10995/103372
Условия доступа: info:eu-repo/semantics/openAccess
Идентификатор SCOPUS: 85094609570
Идентификатор PURE: 20131273
a49738ae-5a82-49f4-b0f3-431dbcb9fccf
ISSN: 219606
DOI: 10.1063/5.0023706
Сведения о поддержке: We are grateful to Dr. A. Bee and Dr. D. Talbot from PHENIX laboratory at Sorbonne University (Paris, France) for providing us with the parent ferrofluid. P.K. acknowledges the French “Agence Nationale de la Recherche,” Project Future Investments UCA JEDI, Grant No. ANR-15-IDEX-01 (projects ImmunoMag and MagFilter) and the private company Axlepios Biomedical for financial support, and J.Q.C. acknowledges the financial support of UCA JEDI and Axlepios Biomedical through the PhD fellowship. A.Z. thanks the Russian Science Foundation, Project No. 20-12-00031, for financial support.
Карточка проекта РНФ: 20-12-00031
Располагается в коллекциях:Научные публикации ученых УрФУ, проиндексированные в SCOPUS и WoS CC

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