Makale detayı · 2012
Direct Experimental Evidence of Metal Mediated Etching of Suspended Graphene
- Yıl
- 2012
- Tür
- article
Veri kaynağı ayrımı
- YÖKSİS YÖKSİS makale kaydı
- YÖKSİS dergi adı ACS Nano
- Katalog eşleşmesi (ISSN) ACS Nano
- OpenAlex OpenAlex zenginleştirmesi (özet, atıf, konular)
Özet
OpenAlex · İngilizce
Atomic resolution high angle annular dark field imaging of suspended, single-layer graphene, onto which the metals Cr, Ti, Pd, Ni, Al, and Au atoms had been deposited, was carried out in an aberration-corrected scanning transmission electron microscope. In combination with electron energy loss spectroscopy, employed to identify individual impurity atoms, it was shown that nanoscale holes were etched into graphene, initiated at sites where single atoms of all the metal species except for gold come into close contact with the graphene. The e-beam scanning process is instrumental in promoting metal atoms from clusters formed during the original metal deposition process onto the clean graphene surface, where they initiate the hole-forming process. Our observations are discussed in the light of calculations in the literature, predicting a much lowered vacancy formation in graphene when metal ad-atoms are present. The requirement and importance of oxygen atoms in this process, although not predicted by such previous calculations, is also discussed, following our observations of hole formation in pristine graphene in the presence of Si-impurity atoms, supported by new calculations which predict a dramatic decrease of the vacancy formation energy, when SiO(x) molecules are present.
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152 atıf
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Yerel katalogda bu makaleye atıf yapan 9 yayın (OpenAlex referans eşleşmesi; tam dünya listesi değildir).
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- Probing the Bonding and Electronic Structure of Single Atom Dopants in Graphene with Electron Energy Loss Spectroscopy 2013
- Silicon Carbon Bond Inversions Driven by 60 keV Electrons in Graphene 2014
- Mobile metal adatoms on single layer bilayer and trilayer graphene An ab initio DFT study with van der Waals corrections correlated with electron microscopy data 2013
- Atomic Structure of Graphene and h-BN Layers and Their Interactions with Metals 2013
- Electronic functionalisation of graphene via external doping and dosing 2015
- Metallic Nanoislands on Graphene for Biomechanical Sensing 2020
- Plasmonic Enhancement at Metal Atoms on Graphene Edges revealed by EFTEM 2014