Decrease in reflectance of vertically-aligned carbon nanotubes after oxygen plasma treatment
Decrease in reflectance of vertically-aligned carbon nanotubes after oxygen plasma treatment
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DOI：
10.1016/j.carbon.2014.03.040
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发表时间：
2014-03
期刊：
影响因子：
3.6
通讯作者：
N. Tomlin;A. Curtin;J. Lehman;M. White
中科院分区：
文献类型：
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作者：
N. Tomlin;A. Curtin;J. Lehman;M. White
采用氧等离子体处理降低多壁垂直排列碳纳米管（VACNT）的反射率。在与法线成65°的入射角下的镜面反射率测量显示，在250-2500 nm的波长范围内反射率降低，在长波长下反射率降低多达5倍。总半球反射率测量显示，从300-2400 nm的反射率下降，在短波长下的反射率降低高达8倍。蚀刻速率测量和氦离子显微镜显示，氧等离子体通过修改表面形态，其特征在于通过蚀刻掉顶层和诱导纳米管尖端的团聚来降低VACNT的反射率。
Oxygen plasma treatment was used to lower the reflectance of multiwall vertically-aligned carbon nanotubes (VACNT). Specular reflectance measurements at an incident angle of 65° from normal show a decrease in reflectance over the wavelength range of 250-2500 nm, with up to 5 times lower reflectance at long wavelengths. Total hemispherical reflectance measurements show a decrease in reflectance from 300-2400 nm, with up to 8 times lower reflectance at short wavelengths. Etch rate measurements and helium ion microscopy reveal that the oxygen plasma reduces the reflectance of VACNT by modifying the surface morphology, characterized by etching away the top layer and inducing agglomeration of nanotube tips.