Transition metal dichalcogenide micromotors with programmable photophoretic swarming motion
Herein we report the light-triggered photophoretic motion of WS2 micromotors. The micromotors are prepared by liquid-phase exfoliation of pristine WS2 in water, resulting in a layered material with high photoconversion capability. Under electromagnetic irradiation in the UV or VIS range, the micromo...
| Autores: | , , , |
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| Tipo de recurso: | artículo |
| Fecha de publicación: | 2022 |
| País: | España |
| Institución: | Universidad de Alcalá (UAH) |
| Repositorio: | e_Buah Biblioteca Digital Universidad de Alcalá |
| Idioma: | inglés |
| OAI Identifier: | oai:ebuah.uah.es:10017/59176 |
| Acceso en línea: | http://hdl.handle.net/10017/59176 https://dx.doi.org/10.1039/D2TA07792B |
| Access Level: | acceso abierto |
| Palabra clave: | Química Chemistry |
| Sumario: | Herein we report the light-triggered photophoretic motion of WS2 micromotors. The micromotors are prepared by liquid-phase exfoliation of pristine WS2 in water, resulting in a layered material with high photoconversion capability. Under electromagnetic irradiation in the UV or VIS range, the micromotors exhibit a positive photophoretic motion and swarming-like schooling behavior. The light-induced heating of the prepared micromotors is studied and computational fluid dynamics simulations are considered to characterize the photophoretic propulsion mechanism. The novel micromotors described here are capable of performing a collective motion without the need for surfactants, fuels, or other reagents, reaching velocities of up to 6000 mu m s(-1). To date, this represents the fastest light-driven micromotor platform, paving the way for novel cutting-edge applications. |
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