Detail publikace

Optical motion control of catalytic WS2 and MoS2 micromotors

de la Asuncion-Nadal, V. Maria-Hormigos, R. Jurado-Sanchez, B. Escarpa, A.

Originální název

Optical motion control of catalytic WS2 and MoS2 micromotors

Typ

článek v časopise ve Web of Science, Jimp

Jazyk

angličtina

Originální abstrakt

Herein we described the on-demand optically controlled braking and acceleration of transition metal dichal-cogenide (TMD) based tubular catalytic micromotors. The direct electrodeposition of a thin WS2 or MoS2 outer layer imparts the micromotors with a direct bandgap for built-in optical responsive properties, along with light-induced heating. Thus, up to 70% speed acceleration is observed after irradiation from 365 to 535 nm. The phenomena can be explained by a mixed effect of electron generation and promotion from the active electronic levels of the outer WS2 or MoS2 micromotor layer, which recombines with the Pt layer, generating an additional peroxide input for increased speeds. The inherent photothermal properties of the TMD outer layer of the micromotors after light interaction also result in an increase in the temperature of the inner catalytic Pt layer, which results in increased decomposition kinetics. On-demand braking and acceleration of the micromotors can be thus achieved in the full electromagnetic spectrum, representing an alternative approach to control catalytic micromotor propulsion for a myriad of applications.

Klíčová slova

Micromotors; Light; Chalcogenides; Catalytic; Propulsion

Autoři

de la Asuncion-Nadal, V.; Maria-Hormigos, R.; Jurado-Sanchez, B.; Escarpa, A.

Vydáno

1. 12. 2022

Nakladatel

ELSEVIER

Místo

AMSTERDAM

ISSN

2352-9407

Periodikum

Applied Materials Today

Ročník

29

Číslo

101664

Stát

Nizozemsko

Strany počet

7

URL

https://www.sciencedirect.com/science/article/pii/S2352940722002980?via%3Dihub

BibTex

@article{BUT182364,
  author="de la Asuncion-Nadal, V. and Maria-Hormigos, R. and Jurado-Sanchez, B. and Escarpa, A.",
  title="Optical motion control of catalytic WS2 and MoS2 micromotors",
  journal="Applied Materials Today",
  year="2022",
  volume="29",
  number="101664",
  pages="7",
  doi="10.1016/j.apmt.2022.101664",
  issn="2352-9407",
  url="https://www.sciencedirect.com/science/article/pii/S2352940722002980?via%3Dihub"
}