Títol:
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Propulsion mechanism of catalytic microjet engines
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Autor/a:
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Fomin, Vladimir M.; Hippler, Markus; Magdanz, Veronika; Soler Turu, Lluís; Sanchez, Samuel; Schmidt, Oliver G.
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Altres autors:
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Universitat Politècnica de Catalunya. Institut de Tècniques Energètiques |
Abstract:
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We describe the propulsion mechanism of the catalytic microjet engines that are fabricated using rolled-up nanotech. Microjets have recently shown numerous potential applications in nanorobotics but currently there is a lack of an accurate theoretical model that describes the origin of the motion as well as the mechanism of self-propulsion. The geometric asymmetry of a tubular microjet leads to the development of a capillary force, which tends to propel a bubble toward the larger opening of the tube. Because of this motion in an asymmetric tube, there emerges a momentum transfer to the fluid. In order to compensate this momentum transfer, a jet force acting on the tube occurs. This force, which is counterbalanced by the linear drag force, enables tube velocities of the order of 100 µm/s. This mechanism provides a fundamental explanation for the development of driving forces that are acting on bubbles in tubular microjets. |
Matèries:
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-Àrees temàtiques de la UPC::Enginyeria mecànica::Motors -Nanotechnology -Electric motors -Nanorobots -Nanomachines -Nanomotors -Model -Nanotecnologia -Motors (Mecànica) |
Drets:
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Attribution-NonCommercial-NoDerivs 3.0 Spain
http://creativecommons.org/licenses/by-nc-nd/3.0/es/ |
Tipus de document:
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Article - Versió publicada Article |
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