Graphene etching on SiC grains as a path to interstellar polycyclic aromatic hydrocarbons formation

P. Merino 1 M. Švec 2 J. Martinez 3 P. Jelinek 4 P. Lacovig 3 M. Dalmiglio 3 S. Lizzit 3 P. Soukiassian 5 J. Cernicharo 6 J.A. Martin-Gago 7
1 GISUM - Grupo de Ingeniería del Software de la Universidad de Málaga
2 ASCR - Czech Academy of Sciences [Prague]
3 Elettra Sincrotrone Trieste
4 Department of Electronics and Vacuum Physics
5 LENSIS - Laboratoire d'Etude des NanoStructures et Imagerie de Surface
SPEC - UMR3680 - Service de physique de l'état condensé, IRAMIS - Institut Rayonnement Matière de Saclay
6 ICMM - Instituto de Ciencia de Materiales de Madrid
7 CAB - Centro de Astrobiologia [Madrid]
Abstract : Polycyclic aromatic hydrocarbons appear among the most abundant observed species in interstellar space and are key molecules to understanding the prebiotic roots of life. However, their existence and abundance in space remain a puzzle. We have shown that aromatic species can be efficiently formed on the graphitized surface of the abundant silicon carbide stardust on exposure to atomic hydrogen under pressure and temperature conditions analogous to those of the interstellar medium, mimicked here.
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Submitted on : Thursday, March 9, 2017 - 10:02:23 AM
Last modification on : Monday, March 18, 2019 - 6:28:03 PM

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P. Merino, M. Švec, J. Martinez, P. Jelinek, P. Lacovig, et al.. Graphene etching on SiC grains as a path to interstellar polycyclic aromatic hydrocarbons formation. Nature Communications, Nature Publishing Group, 2014, 5, ⟨10.1038/ncomms4054⟩. ⟨cea-01485585⟩

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