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Self-Propelled Hovercraft Based on Cold Leidenfrost Phenomenon.

ABSTRACT: The Leidenfrost phenomenon of liquid droplets levitating and dancing when placed upon a hot plate due to propulsion of evaporative vapor has been extended to many self-propelled circumstances. However, such self-propelled Leidenfrost devices commonly need a high temperature for evaporation and a structured solid substrate for directional movements. Here we observed a "cold Leidenfrost phenomenon" when placing a dry ice device on the surface of room temperature water, based on which we developed a controllable self-propelled dry ice hovercraft. Due to the sublimated vapor, the hovercraft could float on water and move in a programmable manner through designed structures. As demonstrations, we showed that the hovercraft could be used as a cargo ship or a petroleum contamination collector without consuming external power. This phenomenon enables a novel way to utilize programmable self-propelled devices on top of room temperature water, holding great potential for applications in energy, chemical engineering and biology.

SUBMITTER: Shi M

PROVIDER: S-EPMC4919644 | biostudies-literature | 2016 Jun

REPOSITORIES: biostudies-literature

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Self-Propelled Hovercraft Based on Cold Leidenfrost Phenomenon.

Shi Meng M Ji Xing X Feng Shangsheng S Yang Qingzhen Q Lu Tian Jian TJ Xu Feng F

Scientific reports 20160624

The Leidenfrost phenomenon of liquid droplets levitating and dancing when placed upon a hot plate due to propulsion of evaporative vapor has been extended to many self-propelled circumstances. However, such self-propelled Leidenfrost devices commonly need a high temperature for evaporation and a structured solid substrate for directional movements. Here we observed a "cold Leidenfrost phenomenon" when placing a dry ice device on the surface of room temperature water, based on which we developed ...[more]

PMID: 27338595

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