Nanopencil as a wear-tolerant probe for ultrahigh density data storage

Tayebi, Noureddine; Narui, Yoshie; Chen, Robert J.; Collier, C. Patrick; Giapis, Konstantinos P.; Zhang, Yuegang
September 2008
Applied Physics Letters;9/8/2008, Vol. 93 Issue 10, p103112
Academic Journal
A dielectric-sheathed carbon nanotube probe, resembling a “nanopencil,” has been fabricated by conformal deposition of silicon-oxide on a carbon nanotube and subsequent “sharpening” to expose its tip. The high aspect-ratio nanopencil probe takes advantage of the small nanotube electrode size, while avoiding bending and buckling issues encountered with naked or polymer-coated carbon nanotube probes. Since the effective electrode diameter of the probe would not change even after significant wear, it is capable of long-lasting read/write operations in contact mode with a bit size of several nanometers.


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