Quantitative measurement and mechanism analysis of the high-efficiency laser propulsion of a graphene sponge | Zendy

Lei Wang | Zendy; Wing Yim Tam | Zendy; Qiuling Zhao | Zendy; Xia Wang | Zendy

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Quantitative measurement and mechanism analysis of the high-efficiency laser propulsion of a graphene sponge

Author(s) -

Lei Wang,

Wing Yim Tam,

Qiuling Zhao,

Xia Wang

Publication year - 2020

Publication title -

optics express

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.394

H-Index - 271

ISSN - 1094-4087

DOI - 10.1364/oe.403875

Subject(s) - propulsion , laser , graphene , knudsen number , materials science , work (physics) , propellant , aerospace engineering , spacecraft propulsion , mechanism (biology) , optics , nanotechnology , physics , mechanics , thermodynamics , engineering , quantum mechanics

Laser propulsion of a graphene sponge shows tremendous potential in propellant-free flight, photoresponsive actuators and micro opto-electro mechanical systems. However, the mechanism is still in dispute and the propulsion force hasn't been accurately measured, seriously hindering its development. This work develops a quantitative method to measure the propulsion force. It is found that the characteristics of the force agree qualitatively with the Knudsen force due to laser-induced thermal nonequilibrium in rarefied gas, which might be another possible mechanism of laser propulsion of a graphene sponge. Also, this kind of laser propulsion is highly efficient, stable and sustainable.

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