Conductance measurement of single-walled carbon nanotubes in aqueous environment
- 7 April 2003
- journal article
- research article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 82 (14) , 2338-2340
- https://doi.org/10.1063/1.1566084
Abstract
We report measurement of conductance of single-walled carbon nanotubes in aqueous media using a field effect geometry in which source and drain electrodes are protected with a photopolymerized epoxy. Without this protection, exposure to aqueous media degrades the device instantly. The 2.6 μm width open slits are prepared by photolithography at the central region between source and drain electrodes, whose spacing, or channel length, is 5 μm, so that only the nanotube channel can be directly exposed to an aqueous environment, while the metal–nanotube junctions are protected. For protected devices, the response to water as characterized primarily by changes in threshold voltage is reversible and reproducible.Keywords
This publication has 14 references indexed in Scilit:
- Integration of suspended carbon nanotube arrays into electronic devices and electromechanical systemsApplied Physics Letters, 2002
- High Performance Electrolyte Gated Carbon Nanotube TransistorsNano Letters, 2002
- Electrical properties and devices of large-diameter single-walled carbon nanotubesApplied Physics Letters, 2002
- Logic Circuits with Carbon Nanotube TransistorsScience, 2001
- Engineering Carbon Nanotubes and Nanotube Circuits Using Electrical BreakdownScience, 2001
- Electrochemical carbon nanotube field-effect transistorApplied Physics Letters, 2001
- Nanotube Molecular Wires as Chemical SensorsScience, 2000
- Room-temperature transistor based on a single carbon nanotubeNature, 1998
- Smallest carbon nanotubeNature, 1992
- Helical microtubules of graphitic carbonNature, 1991