Theoretical modeling of catalytic self-propulsion

Авторы: Nizkaya Tatiana V., Asmolov Evgeny S., Vinogradova Olga I.
Журнал: Current Opinion in Colloid and Interface Science
Том: 62
Год издания: 2022
Издательство: Pergamon Press
Местоположение издательства: United States
Номер статьи: 101637
DOI: 10.1016/j.cocis.2022.101637
Аннотация: Self-propelling particles or microswimmers have opened a new field of investigation with both fundamental and practical perspectives. They represent very convenient model objects for experimental studies of active matter and have many potential applications. Here, we summarize recent advances in theoretical description of the self-propulsion of catalytic microswimmers that non-uniformly release ions, including its physical origins and the current switch in focus to non-linear effects, geometric tuning and more. In particular, we show that the ionic self-propulsion always includes both diffusiophoretic and electrophoretic contributions, and that non-linear effects are physical causes of a number of intriguing phenomena, such as the reverse in the direction of the particle motion in response to variations of the salt concentration or self-propulsion of electro-neutral particles. We finally suggest several remaining theoretical challenges in the field.
Добавил в систему: Асмолов Евгений Савельевич

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