Study on Application of Centrifugation in Dispersion of Single-walled Carbon Nanotubes
The density and volume between single-walled carbon nanotubes (SWNTs) and carbon nanotube bundles (CNBs) are different, so SWNTs and CNBs in solution could deposit at different velocity and could be separated when centrifugal force was exerted. This paper presented the basic theory of centrifugation of micro particles and simulated the sediment of SWNTs and CNBs in the process of centrifugation. Based on the theory and simulation analysis, the paper developed a new method of dispersion-centrifugation. Raman spectrum, SEM and AFM analysis has demonstrated the method was effective to disperse SWNTs. The paper developed a new method to prepare the dispersed-well solution of SWNTs and also provided a feasible technique to fabricate SWNT-based nano- structures and devices.
single-walled carbon nanotubes carbon nanotube bundles dispersion centrifugation
于海波 李文荣 田孝军 董再励 覃柯
中国科学院沈阳自动化研究所,中国沈阳;中国科学院研究生院,中国北京 中国科学院沈阳自动化研究所,中国沈阳;香港中文大学微/纳系统中心,中国香港 中国科学院沈阳自动化研究所,中国沈阳
国际会议
成都
英文
2007-11-19（万方平台首次上网日期，不代表论文的发表时间）