期刊
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
卷 59, 期 19, 页码 7508-7513出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201915705
关键词
chemotaxis; electronic swimmers; light emission; magnetotaxis; pH gradients
资金
- European Research Council (ERC) [741251] Funding Source: European Research Council (ERC)
- H2020 European Research Council [741251] Funding Source: Medline
- Université de Bordeaux [PhD grant] Funding Source: Medline
Miniaturized autonomous chemo-electronic swimmers, based on the coupling of spontaneous oxidation and reduction reactions at the two poles of light-emitting diodes (LEDs), are presented as chemotactic and magnetotactic devices. In homogeneous aqueous media, random motion caused by a bubble-induced propulsion mechanism is observed. However, in an inhomogeneous environment, the self-propelled devices exhibit positive chemotactic behavior, propelling themselves along a pH or ionic strength gradient ( backward difference pH and backward difference I, respectively) in order to reach a thermodynamically higher active state. In addition, the intrinsic permanent magnetic moment of the LED allows self-orientation in the terrestrial magnetic field or following other external magnetic perturbations, which enables a directional motion control coupled with light emission. The interplay between chemotaxis and magnetotaxis allows fine-tuning of the dynamic behavior of these swimmers.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据