沉积在石墨烯上的苯丙氨酸的氩团簇轰击——动能和射弹尺寸的影响

Ar cluster bombardment of phenylalanine deposited on graphene-Effect of kinetic energy and projectile size.

作者信息

Louerdi Soukaina, Hrabar Sviatoslav, Mouhib Taoufiq, Kański Michał, Postawa Zbigniew

机构信息

LISA Laboratory, Ecole Nationale des Sciences Appliquées, Hassan First University of Settat, BP: 218, 26103 Berrechid, Morocco.

Faculty of Physics, Astronomy and Applied Computer Science, Jagiellonian University, Lojasiewicza 11, 30-348 Kraków, Poland.

出版信息

J Chem Phys. 2023 Nov 28;159(20). doi: 10.1063/5.0169830.

DOI:10.1063/5.0169830

PMID:38010336

Abstract

This study investigates the effects of kinetic energy and projectile size on particle emission from a phenylalanine overlayer adsorbed on a graphene bilayer during argon projectile bombardment. Projectiles of various sizes (1-1000 atoms) and kinetic energies (0.5-40 keV) are used to study their impact on the ejection efficiency, mass distribution, and kinetic and angular spectra of the emitted substances. Particle ejection mechanisms are discussed in scenarios with and without sample perforation. Additionally, this study investigated the potential use of graphene in secondary ion mass spectrometry or neutral secondary mass spectrometry analyses.

摘要

本研究调查了动能和弹丸尺寸对氩弹丸轰击期间吸附在双层石墨烯上的苯丙氨酸覆盖层的粒子发射的影响。使用各种尺寸（1 - 1000个原子）和动能（0.5 - 40 keV）的弹丸来研究它们对发射物质的喷射效率、质量分布以及动能和角谱的影响。在有和没有样品穿孔的情况下讨论了粒子喷射机制。此外，本研究还调查了石墨烯在二次离子质谱或中性二次质谱分析中的潜在用途。