Progress towards the Automatic Assembly of Carbon Nanotubes by Dielectrophoresis

Abstract:

Developing automatic assembly techniques is essential for the application of advanced nanomaterials such as carbon nanotubes (CNTs). This paper presents a review of current research progress towards the automatic assembly of CNTs by dielectrophoresis (DEP). The mechanisms and experimental set-up of three methods for controlled DEP assembly of CNTs are introduced. One is using a limiting resistor to control the electric field after the deposition of a single CNT or a bundle of CNTs. The other two measure electrode gap electrical signals, gap impedance and current respectively, indicating CNT connections to stop the DEP process. The real-time electrical signal monitoring during the DEP process and controlling the DEP using the detected signals represent a research direction in the manipulation of a wide category of nanomaterials and will speed up the industrial applications of the materials.

• Periodical: Advanced Materials Research (Volumes 418-420)
• Pages: 731-734
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.418-420.731
• Online since: December 2011
• Authors: Li Jia Feng, Li Bao An, Chun Guang Lu, Chen Wei Lu
• Keywords: Assembly, Carbon Nanotube (CN), Dielectrophoresis, Process Automation

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