Made-to-order nanocarbons through deterministic plasma nanotechnology

作者：Ren Yuping; Xu Shuyan; Rider Amanda Evelyn; Ostrikov Kostya^*

来源：Nanoscale, 2011, 3(2): 731-740.

DOI：10.1039/c0nr00718h

Through a combinatorial approach involving experimental measurement and plasma modelling, it is shown that a high degree of control over diamond-like nanocarbon film sp(3)/sp(2) ratio (and hence film properties) may be exercised, starting at the level of electrons (through modification of the plasma electron energy distribution function). Hydrogenated amorphous carbon nanoparticle films with high percentages of diamond-like bonds are grown using a middle-frequency (2 MHz) inductively coupled Ar + CH(4) plasma. The sp(3) fractions measured by X-ray photoelectron spectroscopy (XPS) and Raman spectroscopy in the thin films are explained qualitatively using sp(3)/sp(2) ratios 1) derived from calculated sp(3) and sp(2) hybridized precursor species densities in a global plasma discharge model and 2) measured experimentally. It is shown that at high discharge power and lower CH(4) concentrations, the sp(3)/sp(2) fraction is higher. Our results suggest that a combination of predictive modeling and experimental studies is instrumental to achieve deterministically grown made-to-order diamond-like nanocarbons suitable for a variety of applications spanning from nano-magnetic resonance imaging to spin-flip quantum information devices. This deterministic approach can be extended to graphene, carbon nanotips, nanodiamond and other nanocarbon materials for a variety of applications

• 出版日期2011
• 单位南阳理工学院; CSIRO