A study of He⁺ ion irradiation influence on the wettability of the multi-walled carbon nanotubes is presented. Tablets of pressed nanotubes of two types with different diameters were prepared and irradiated by 80 keV He⁺ ions. Raman and X-ray photoelectron spectroscopies showed the differences in the rate of radiation-induced defect formation for different types of nanotubes. The formation of cross-links between the layers of nanotubes under ion irradiation was demonstrated by the molecular dynamics simulation. Contact angle changes drastically with an increase in the fluence for both types of nanotubes: at low fluences superhydrophobic surfaces are formed, with an increase in the fluence a significant reduction in contact angle is observed, especially for the nanotubes of smaller diameters.

提出了He ⁺离子辐照对多壁碳纳米管润湿性影响的研究。制备了两种直径不同的压制纳米管片，并用80 keV He ⁺辐照离子。拉曼光谱和X射线光电子能谱显示了不同类型的纳米管在辐射诱导的缺陷形成速率上的差异。通过分子动力学模拟证明了离子辐照下纳米管各层之间的交联形成。两种类型的纳米管的通量增加，接触角都急剧变化：在低通量下，形成超疏水表面，通量增加，则观察到接触角显着减小，特别是对于较小直径的纳米管。