Accession Number:

ADA495586

Title:

Current Rectification by As-Grown Chemical Vapor Deposited Single-Walled Carbon Nanotubes

Descriptive Note:

Conference paper

Corporate Author:

ARMY RESEARCH LAB ABERDEEN PROVING GROUND MD

Personal Author(s):

• Mallick, Govind
• Griep, Mark
• Lastella, Sarah
• Sahoo, Sangeeta
• Hirsch, Samuel
• Ajayan, Pulickel M.
• Karna, Shashi P.

Report Date:

2008-08-01

Pagination or Media Count:

3.0

Abstract:

Observation of diode-like current I - voltage V characteristics of switches fabricated from chemical vapor deposited CVD as-grown single-walled carbon nanotube SWNT bundles are presented. Atomic force microscopic analysis of the device structure and surface topology of SWNT suggest the observed rectification of current to possibly result from a cross-tube junctions, b a mixture of metallic and semiconducting tubes in the SWNT bundles, andor c chirality change along a single tube. The exact mechanism underlying the observed rectification could not be established. The diode-like behavior of SWNT devices discovered in this research opens up new applications of SWNTs as nanoscale AC-DC converter.

Descriptors:

• *CHEMICAL VAPOR DEPOSITION
• *CARBON NANOTUBES
• DIRECT CURRENT
• VOLTAGE
• ALTERNATING CURRENT

Subject Categories:

• Atomic and Molecular Physics and Spectroscopy

Distribution Statement:

APPROVED FOR PUBLIC RELEASE