Carbon-atom wires produced by nanosecond pulsed laser deposition in a background gas

Abstract

Wires of sp-hybridized carbon atoms are attracting interest for both fundamental aspects of carbon science and for their appealing functional properties. The synthesis by physical vapor deposition has been reported to provide sp-rich carbon films but still needs to be further developed and understood in detail. Here the synthesis of carbon-atom wires (CAWs) has been achieved by nanosecond pulsed laser deposition (PLD) expoliting the strong out-of-equilibrium conditions occurring when the ablation plasma is confined in a background gas. Surface Enhnaced Raman scattering (SERS) spectra of deposited films indicates that CAWs are mixed with a mainly $s{p}^2$ amorphous carbon in a $sp-s{p}^2$ hybrid material. Optimal conditions for the deposition of sp-carbon phase have been investigated by changing deposition parameters thus suggesting basic mechanisms of carbon wires formation. Our proof-of-concept may open new perspectives for the targeted fabrication of CAWs and $sp-s{p}^2$ structures.

15 pages 4 figures

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Cited by in corpus (9)

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• Synthesis And Characterization Of Polyynes End-Capped By Biphenyl Groups ({\Alpha},Ω-Biphenylpolyynes)
• Size-selected polyynes synthesized by submerged arc discharge in water
• In situ surface-enhanced Raman spectroscopy to investigate polyyne formation during pulsed laser ablation in liquid
• Ballistic-aggregated Carbon Nanofoam in Target-side of Pulsed Laser Deposition for Energy Storage Applications
• Low-density functionalized amorphous carbon nanofoam as binder-free Supercapacitor electrode