Please use this identifier to cite or link to this item:
http://hdl.handle.net/2445/123486
Title: | Fuel-free nanocap-like motors actuated under visible light |
Author: | Wang, Xu Srdihar, Varum Guo, Surong Talebi, Nahid Miguel López, Albert Hahn, Kersten van Aken, Peter A. Sánchez Ordóñez, Samuel |
Keywords: | Nanotecnologia Espectroscòpia d'electrons Nanotechnology Electron spectroscopy |
Issue Date: | 20-Jun-2018 |
Publisher: | Wiley |
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 |
URI: | http://hdl.handle.net/2445/123486 |
Related resource: | http://dx.doi.org/10.1002/adfm.201705862 |
Appears in Collections: | Publicacions de projectes de recerca finançats per la UE Articles publicats en revistes (Institut de Bioenginyeria de Catalunya (IBEC)) |
Files in This Item:
File | Description | Size | Format | |
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L21_2018_Advanced Functional Materials_28_1705862_OA.pdf | 1.51 MB | Adobe PDF | View/Open |
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