Lebedev Physical Institute, Russian Academy of Sciences, 119991 Moscow, Russia.
Joint Institute for High Temperatures, Russian Academy of Sciences, 125412 Moscow, Russia.
Phys Chem Chem Phys. 2022 Aug 24;24(33):19693-19696. doi: 10.1039/d2cp03383f.
The wide research interest in nano-, micro-, and macromotors is due to the diverse range of applied problems in engineering, biomedicine, and ecology. At the same time, the amount of known mechanisms responsible for the locomotion of motors is limited. Here, we demonstrate a novel method of motor locomotion, which can be contingently called "chemical magnetism". The phenomenon considered here is based on the fact that any current loop in the magnetic field is affected by a force. "Chemical magnet" represents a bimetal surfer swimming at the electrolyte surface. When the redox reaction proceeds, a current loop emerges. That defines the action of the additional magnetic force on the surfer in the non-uniform magnetic field. The magnetic properties of the surfer can be varied in a wide range by changing the concentration of the electrolyte solution, its temperature, and the pair of metals composing the surfer. The phenomenon of "chemical magnetism" considered here widens a list of known mechanisms of motor locomotion.
纳米、微纳和宏观马达的广泛研究兴趣源于其在工程、生物医学和生态学中应用问题的多样性。与此同时，已知的用于解释马达运动的机制数量有限。在这里，我们展示了一种新的马达运动方法，可以暂时称之为“化学磁”。这里考虑的现象基于以下事实：磁场中的任何电流环都会受到力的影响。“化学磁”代表在电解质表面游泳的双金属冲浪者。当氧化还原反应发生时，会出现一个电流环。这定义了在非均匀磁场中，外加磁场对冲浪者的作用力。通过改变电解质溶液的浓度、温度以及构成冲浪者的金属对，可以在很宽的范围内改变冲浪者的磁性。这里考虑的“化学磁”现象拓宽了已知的马达运动机制列表。
