Optical-Propulsion Metastructures.

Autor: Rao S; The Institute of Technological Sciences, Wuhan University, Wuhan, 430072, P. R. China.; School of New Energy Science and Engineering, Xinyu University, Xinyu, 338004, P. R. China., Yi W; The Institute of Technological Sciences, Wuhan University, Wuhan, 430072, P. R. China., Jiang H; Institute of Laser Manufacturing, Henan Academy of Sciences, Zhengzhou, 450046, P. R. China., Zhang S; The Institute of Technological Sciences, Wuhan University, Wuhan, 430072, P. R. China., Yi J; The Institute of Technological Sciences, Wuhan University, Wuhan, 430072, P. R. China., Cheng GJ; School of Industrial Engineering, Purdue University, West Lafayette, IN, 47906, USA.
Jazyk: angličtina
Zdroj: Advanced materials (Deerfield Beach, Fla.) [Adv Mater] 2024 Oct; Vol. 36 (41), pp. e2406384. Date of Electronic Publication: 2024 Aug 15.
DOI: 10.1002/adma.202406384
Abstrakt: Pulsed laser micropropulsion (PLMP) offers a promising avenue for miniature space craft, yet conventional propellants face challenges in balancing efficiency and stability. An optical-propulsion metastructure strategy using metal-organic frameworks (MOFs) is presented to generate graphene-metal metastructures (GMM), specifically GMM-(HKUST-1), which significantly enhances PLMP performance. This novel approach leverages the unique interaction between pulsed lasers and the precisely engineered GMMs-comprising optimized metal nanoparticle size, graphene layers, and inter-particle gaps-to boost both propulsion efficiency and stability. Experimental and numerical analyses reveal that GMM-(HKUST-1) achieves aspecific impulse of 1072.94 s, ablation efficiency of 51.22%, and impulse thrust per mass of 105.15 µN µg -1 , surpassing traditional propellants. With an average particle size of ≈12 nm and a density of 0.958 g cm -3 , these metastructures exhibit 99% light absorption efficiency and maintain stability under atmospheric and humid conditions. The graphene nanolayer efficiently absorbs and converts laser energy, while the metal nanostructures enhance light-matter interactions, promoting energy transfer and material stability. These findings suggest that this GMM-based optical-propulsion strategy can revolutionize microspacecraft propulsion and energy systems, offering significant advancements across various domains.
(© 2024 The Author(s). Advanced Materials published by Wiley‐VCH GmbH.)
Databáze: MEDLINE
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