Abstract
Levitation and self-propelled functions of the Leidenfrost phenomena are attractive. In this study, we propose a Leidenfrost glider having a ratchet-like topology under its body along with the driving method using the asymmetrical viscous vapor flow, as a prototype of a future vehicle that can move on a flat shallow layer freely. We observed that this vehicle can be accelerated to the velocity of approximately 0.2 m/s on a shallow water layer and the direction can be quickly controlled by changing the center of gravity of the vehicle. Our device might be important to reduce the worldwide energy loss of vehicles or to develop innovative microfluidic transportation systems in the future.
Highlights
Leidenfrost phenomenon is a kind of film boiling and it is characterized by the levitation and long life time of a liquid droplet on a hot plate because of the existence of the Leidenfrost vapor layer between the liquid and the hot plate.[1,2] In 2006, Linke et al.[3] showed that liquids perform self-propelled motion of the level of ∼5 cm/s on the hot surface having ratchet-like topology and suggested innovative pumps with no moving part and no external power supply.[3]
To overcome the water supply problem of Hashmi et al.’s cart, we consider a transportation system consisting of a vehicle using a Leidenfrost phenomenon and a shallow water layer
In this study, we propose a Leidenfrost glider having a ratchet-like topology under its body along with the driving method using the asymmetrical viscous vapor flow owing to the changing of the position of the burden and experimentally prove the performance and functions
Summary
Leidenfrost phenomenon is a kind of film boiling and it is characterized by the levitation and long life time of a liquid droplet on a hot plate because of the existence of the Leidenfrost vapor layer between the liquid and the hot plate.[1,2] In 2006, Linke et al.[3] showed that liquids perform self-propelled motion of the level of ∼5 cm/s on the hot surface having ratchet-like topology and suggested innovative pumps with no moving part and no external power supply.[3]. In this study, we propose a Leidenfrost glider having a ratchet-like topology under its body along with the driving method using the asymmetrical viscous vapor flow owing to the changing of the position of the burden and experimentally prove the performance and functions.
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