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arXiv 1601.02776cond-mat.mtrl-sci
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纳秒脉冲laser沉积碳原子线

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

C. S. Casari, C. S. Giannuzzi, V. Russo

摘要:

sp-hybridized碳原子的导线吸引了人们的兴趣,碳科学的基础方面和他们的吸引力的功能特性。已经报道了通过物理气相沉积的合成提供富含sp的碳膜,但仍需要进一步开发和详细理解。在这里,碳原子线(CAWs)的合成已经实现了纳秒脉冲激光沉积(PLD)expoliting时发生的烧蚀等离子体被限制在背景气体中的强烈的非平衡条件。沉积薄膜的表面增强拉曼散射(SERS)光谱表明,碳原子线与主要的$sp^2$无定形碳混合在一个$sp-sp^2$杂化材料。通过改变沉积参数,研究了sp-碳相沉积的最佳条件,从而提出了碳丝形成的基本机理。我们的概念验证可能会为碳原子线和$sp-sp^2$结构的定向制造开辟新的前景。

英文摘要:

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 $sp^2$ amorphous carbon in a $sp-sp^2$ 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 $sp-sp^2$ structures.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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