Nanotech 2010 Vol. 1
Nanotech 2010 Vol. 1
Nanotechnology 2010: Advanced Materials, CNTs, Particles, Films and Composites

Nanoscale Materials Characterization Chapter 1

High resolution imaging of biological materials using hydrophobic carbon nanotube AFM probes

Authors: J.-H. Lee, C.K. Najeeb, J. Chang, W.-S. Kang, G.-H. Nam, J.-H. Kim

Affilation: Ajou University, Korea

Pages: 67 - 70

Keywords: hydrophobic, CNT-probe, high resolution AFM imaging, Langmuir-Blodgett technique

Abstract:
Carbon nanotube (CNT) tipped atomic force microscope (AFM) probes have shown a significant potential for obtaining high resolution imaging of nanostructure and biological materials. In this work, we report a simple method to fabricate single-walled carbon nanotube (SWNT) nano-probes for atomic force microscopy (AFM) using the Langmuir-Blodgett (LB) technique. Moreover, to obtain hydrophobic property of SWNT-AFM probes with a capability of high resolution imaging in atmospheric and high relative humidity conditions, the SWNT-AFM probe was modified through vapor deposition of trichloro[1H, 1H, 2H, 2H,-perfluorotyl]silane (FTOS). Using this FTOS-modified SWNT-AFM probe, a high resolution image of plasmid DNA standard sample was acquired. The measured dimension of plasmid DNA had a middle width of 4~5 nm (true width 2nm). We demonstrate that the FTOS-modified SWNT-AFM probes have extremely high resolution imaging capability, which allows to measure higher resolution images than with conventional AFM probe.

High resolution imaging of biological materials using hydrophobic carbon nanotube AFM probes

ISBN: 978-1-4398-3401-5
Pages: 976
Hardcopy: $189.95