Aqueous Dispersion and Dielectrophoretic Assembly of Individual Surface-Synthesized Single-Walled Carbon Nanotubes

作者：Burg Brian R; Schneider Julian; Muoth Matthias; Durrer Lukas; Helbling Thomas; Schirmer Niklas C; Schwamb Timo; Hierold Christofer; Poulikakos Dimos^*

来源：Langmuir, 2009, 25(14): 7778-7782.

DOI：10.1021/la901503y

The successful dispersion and large-scale parallel assembly of individual surface-synthesized large-diameter (1-3 nm) single-walled carbon nanotubes (SWNTs), grown by chemical vapor deposition (CVD), is demonstrated. SWNTs are removed from the growth substrate by a short, low-energy ultrasonic pulse to produce ultrapure long-term stable surfactant-stabilized solutions. Subsequent dielectrophoretic deposition bridges individual, straight, and long SWNTs between two electrodes. Electrical characterization on 223 low-resistance devices (R-average approximate to 200 k Omega) evidences the high quality of the SWNT raw material, prepared solution, and contact interface. The research reported herein provides an important framework for the large-scale industrial integration of carbon nanotube-based devices. sensors, and applications.

• 出版日期2009-7-21