EFM phase on topography overlay of a carbon nanotube

Electric force microscopy (EFM) (top) and a current-voltage curve (bottom) of a carbon nanotube attached to an electrode. Since the carbon nanotube is conducting, and has continuity to ground here, the EFM phase image shows excellent contrast. In the image, color represents the EFM phase channel, and the surface rendered with ARgyle represents topography. Scan size 5 µm x 2.5 µm. Imaged with the MFP-3D AFM. Courtesy Minot Lab, Oregon State University.