Chemo‐ and Magnetotaxis of Self‐Propelled Light‐Emitting Chemo‐electronic Swimmers - CNRS - Centre national de la recherche scientifique Accéder directement au contenu
Article Dans Une Revue Angewandte Chemie International Edition Année : 2020

Chemo‐ and Magnetotaxis of Self‐Propelled Light‐Emitting Chemo‐electronic Swimmers

Résumé

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 (∇pH and ∇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.
Fichier principal
Vignette du fichier
Manuscript Salinas et al open.pdf (720.79 Ko) Télécharger le fichier
Origine : Fichiers produits par l'(les) auteur(s)
Loading...

Dates et versions

hal-02510435 , version 1 (14-09-2020)

Identifiants

Citer

Gerardo Salinas, Alice L. Dauphin, Camille Colin, Elena Villani, Stéphane Arbault, et al.. Chemo‐ and Magnetotaxis of Self‐Propelled Light‐Emitting Chemo‐electronic Swimmers. Angewandte Chemie International Edition, 2020, 59 (19), pp.7508-7513. ⟨10.1002/anie.201915705⟩. ⟨hal-02510435⟩
161 Consultations
157 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More