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Creation of nano-sized spaces in carbon materials by oxidation and their characterization under STM

机译：通过氧化在碳材料中创建纳米级空间及其在STM下的表征

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Quantitative characterization of nano-sized spaces by STM techniques was discussed. Nano-sized spaces were introduced by oxidation; either oxygen plasma on perfect graphite structure or air oxidation on the surface of carbon spheres with highly disordered structure. By the irradiation of oxygen plasma at room temperature, nano-sized structural defects (missing carbon atoms, vacancies) were introduced in graphite layer plane. The increase in input power led to the increases in both density and size of defects, hut that in irradiation time with a constant power resulted mostly in the increase of defect density, a little effect on the size of defects. By the oxidation of carbon spheres with disordered structure in static air at 400 deg C, spaces in the size range of 0.5-1.35 nm increased, though large spaces with the size of >2.2 nm were formed. The characterization of nano- sized spaces by STM with the aid of image processing and statistical analysis was shown to be effective.
机译：讨论了通过STM技术对纳米空间的定量表征。通过氧化引入纳米空间;要么是处于完美石墨结构上的氧等离子体，要么是具有高度无序结构的碳球表面上的空气氧化。通过在室温下照射氧等离子体，在石墨层平面中引入了纳米级结构缺陷（碳原子缺失，空位缺失）。输入功率的增加导致缺陷的密度和尺寸的增加，但是在恒定功率的照射时间内，大多数情况下会导致缺陷密度的增加，而对缺陷尺寸的影响很小。通过在400摄氏度的静态空气中氧化具有无序结构的碳球，尽管形成了> 2.2 nm的大空间，但在0.5-1.35 nm的大小范围内的空间却增加了。通过STM借助图像处理和统计分析对纳米级空间进行表征被证明是有效的。

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