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|Title:||Fuel-free nanocap-like motors actuated under visible light|
Miguel López, Albert
van Aken, Peter A.
Sánchez Ordóñez, Samuel
|Abstract:||The motion of nanomotors triggered by light sources will provide new alternative routes to power nanoarchitectures without the need of chemical fuels. However, most light-driven nanomotors are triggered by UV-light, near infrared reflection, or laser sources. It is demonstrated that nanocap shaped Au/TiO2 nanomotors (175 nm in diameter) display increased Brownian motion in the presence of broad spectrum visible light. The motion results from the surface plasmon resonance effect leading to self-electrophoresis between the Au and TiO2 layers, a mechanism called plasmonic photocatalytic effect in the field of photocatalysis. This mechanism is experimentally characterized by electron energy loss spectroscopy, energy-filtered transmission electron microscopy, and optical video tracking. This mechanism is also studied in a more theoretical manner using numerical finite-difference time-domain simulations. The ability to power nanomaterials with visible light may result in entirely new applications for externally powered micro/nanomotors.|
|Note:||Versió postprint del document publicat a: http://dx.doi.org/10.1002/adfm.201705862|
|It is part of:||Advanced Functional Materials, 2018, vol. 28, num. 25, p. 1705862|
|Appears in Collections:||Publicacions de projectes de recerca finançats per la UE|
Articles publicats en revistes (Institut de Bioenginyeria de Catalunya (IBEC))
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