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Carbon Nanotube Based Nanofluidic Devices


Abstract Nanofluidic devices in which one single-walled carbon nanotube (SWCNT) spans a barrier between two fluid reservoirs were constructed, enabling direct electrical measurement of the transport of ions and molecules. Ion current through these devices is about 2 orders of magnitude larger than that predicted from the bulk resistivity of the electrolyte. Electroosmosis drives excess current, carried by cations, and is found to be the origin of giant ionic current through SWCNT as shown by building an ionic field-effect transistor with a gate electrode embedded in the fluid barrier. Wetting of inside of the semi-conducting SWCNT by water showed the change of its electronic property, turning the electronic SWCNT field-effect transistor to "on&... (more)
Created Date 2011
Contributor Pang, Pei (Author) / Lindsay, Stuart (Advisor) / Ros, Robert (Committee member) / Shumway, John (Committee member) / Tao, Nongjian (Committee member) / Menéndez, José (Committee member) / Arizona State University (Publisher)
Subject Physics / Biophysics / Carbon Nanotube / CNT field effect transistor / Ionic field effect transistor / Nanofluidics / Nanopore/Nanochannel
Type Doctoral Dissertation
Extent 152 pages
Language English
Copyright
Reuse Permissions All Rights Reserved
Note Ph.D. Physics 2011
Collaborating Institutions Graduate College / ASU Library
Additional Formats MODS / OAI Dublin Core / RIS


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Description Dissertation/Thesis