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19 April 2024 |
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Cluster Beam Deposition and in situ Characterization of Carbyne-rich Carbon Films | | L. Ravagnan
; F. Siviero
; C. Lenardi
; P. Piseri
; E. Barborini
; P. Milani
; C. Casari
; A. Li Bassi
; C.E. Bottani
; | | Date: |
13 Sep 2002 | | Subject: | Materials Science | cond-mat.mtrl-sci | | Abstract: | Nanostructured carbon films produced by supersonic cluster beam deposition have been studied by in situ Raman spectroscopy. Raman spectra show the formation of a sp2 solid with a very large fraction of sp-coordinated carbyne species showing a long-term stability under ultra high vacuum. Distinct Raman contribution from polyyne and cumulene species have been observed. The long-term stability and the behavior of carbyne-rich films under different gas exposure have been characterized showing different evolution for different sp configurations. Our experiments confirm theoretical predictions and demonstrate the possibility of easily producing a stable carbyne-rich pure carbon solid. The stability of the sp2-sp network has important implications for astrophysics and for the production of novel carbon-based systems. | | Source: | arXiv, cond-mat/0209313 | | Services: | Forum | Review | PDF | Favorites | |
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