Accepted articles

Reviews of topical problems

Nanotransport controlled by the ratchet effect

 a, b,  a, b,  c,  d, e
a Moscow Institute of Physics and Technology (State University), Institutskii per. 9, Dolgoprudnyi, Moscow Region, 141700, Russian Federation
b Kotel'nikov Institute of Radio Engineering and Electronics, Russian Academy of Sciences, ul. Mokhovaya 11, kor. 7, Moscow, 125009, Russian Federation
c Chuiko Institute of Surface Chemistry, National Academy of Sciences of Ukraine, Ghenerala Naumova str. 17, Kiev, 03164, Ukraine
d Semenov Institute of Chemical Physics, Russian Academy of Sciences, ul. Kosygina, 4, Moscow, 119991, Russian Federation
e Lomonosov Moscow State University, Vorobevy Gory, Moscow, 119991, Russian Federation

Directed motion of micro- and nanoparticles can be obtained not only by direct methods due to the action of forces with a non-zero average value, which determine the direction of the motion, but also in the absence of such forces in systems with broken mirror symmetry under the action of non-equilibrium fluctuations of various nature (motor or ratchet effect). Unlike other reviews on nanoparticle transport available in the scientific literature, this review focuses on the principles of a nanotransport control by using the ratchet effect, which has various practical applications and, in particular, is promising for targeted drug delivery in living organisms. Various methods of creating directional motion in asymmetric media by rectification of non-equilibrium fluctuations, that supply energy to a system and are characterized by a zero average value of applied forces, real or generalized, are clearly explained. We also consider in detail the properties and characteristics of ratchet systems, discuss their dependence on temperature, a load force, and features of a periodic potential profile in which nanoparticles move, such as the frequency of fluctuations of this profile, its spatial and temporal asymmetry. A systematic description of factors determining the direction of motion of ratchet systems is presented.

Text is available here.

Keywords: nanotransport control, driven diffusive systems, ratchet-effect, Brownian motors
PACS: 05.40.−a, 05.60.Cd (all)
DOI: 10.3367/UFNe.2019.05.038570
Citation: Gulyaev Yu V, Bugaev A S, Rozenbaum V M, Trakhtenberg L I "Nanotransport controlled by the ratchet effect" Phys. Usp., accepted

Received: 17th, January 2019, revised: 2nd, May 2019, 22nd, May 2019

Оригинал: Гуляев Ю В, Бугаев А С, Розенбаум В М, Трахтенберг Л И «Управление нанотранспортом с помощью рэтчет-эффекта» УФН, принята к публикации; DOI: 10.3367/UFNr.2019.05.038570

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