AOT dispersed single-walled carbon nanotubes for transistor device application

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• 作者：Shiunchin C. Wang ; Hui Yang ; Sarbajit Banerjee ; Irving P. Herman ; Daniel L. Akins
• 关键词：Carbon nanotube ; Characterization method ; Dielectrics ; Nanomaterials ; Surfactant
• 刊名：Materials Letters
• 出版年：2008
• 出版时间：15 March 2008
• 年：2008
• 卷：62
• 期：6-7
• 页码：843-845
• 全文大小：461 K

文摘

The precise placement of single-walled carbon nanotubes (SWNTs) in device configurations has been accomplished by AC dielectrophoresis using a biomimetic surfactant, dioctyl sodium sulfosuccinate (i.e. AOT) dispersed SWNTs. To better serve the utilization of SWNTs/AOT for device fabrication, the dispersion of SWNTs in AOT aqueous solutions was investigated at different micellar concentrations and compared with other surfactants. UV–Vis–NIR spectroscopy and AFM microscopy have been employed to characterize solubilized individual SWNTs. Additionally, dispersed solution has been utilized to align SWNTs in field-effect transistor geometrics. We have ascertained that the AOT isolated individual tubes, well-protected from breakdown during sonication, are good candidates for device applications.