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A Simple, Efficient Suspension of Individual Multi-Walled Carbon Nanotubes Based on a Deep Trench Electrode

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Abstract:

We report the suspension of individual multi-walled Carbon nanotube (MWNT) from the bottom substrate using deep trench electrodes that were fabricated using optical lithography. During drying of the solution in dielectrophoretic assembly, the capillary force pulls the MWNT toward the bottom substrate, and it then remains as a deformed structure adhering to the bottom substrate after the solution has dried out. Small-diameter MWNTs cannot be suspended using thin electrodes with large gaps, but can be suspended using thicker electrodes. We present the statistical experimental results for successful suspension, as well as the feasible conditions for MWNT suspension based on a theoretical approach.

Keywords: CAPILLARY FORCE; CARBON NANOTUBES; DIELECTROPHORESIS; SUSPENSION

Document Type: Research Article

DOI: http://dx.doi.org/10.1166/jnn.2006.606

Publication date: December 1, 2006

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  • Journal for Nanoscience and Nanotechnology (JNN) is an international and multidisciplinary peer-reviewed journal with a wide-ranging coverage, consolidating research activities in all areas of nanoscience and nanotechnology into a single and unique reference source. JNN is the first cross-disciplinary journal to publish original full research articles, rapid communications of important new scientific and technological findings, timely state-of-the-art reviews with author's photo and short biography, and current research news encompassing the fundamental and applied research in all disciplines of science, engineering and medicine.
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