Fabrication and applications of vertically aligned carbon nanotubes in microfluidic channels

ANYL 129

Shubhodeep Goswami, goswas@rpi.edu1, Navdeep Bajwa, bajwan@rpi.edu2, Lijie Ci, cil@rpi.edu2, Pulickel M. Ajayan3, and Steven M. Cramer1. (1) Department of Chemical and Biological Engineering, Rensselaer Polytechnic Institute, Troy, NY 12180, (2) Department of Materials Science and Engineering, Rensselaer Polytechnic Institute, Rensselaer Polytechnic Institute, Troy, NY 12180, (3) Department of Material Science and Engineering, Rensselaer Polytechnic Institute, Materials Research Center, Troy, NY 12180
Vertically aligned carbon nanotubes were fabricated in microfluidic channels by depositon of Fe-Al catalyst with ethylene as the carbon source. Evaluation by SEM and optical microscopy confirmed the alignment of the nanotubes in the channel and the absence of nanotubes outside the microfluidic channels. Electrochromatographic separations were carried out with functionalized nanotubes using both reversed phase and group specific affinity separations. These systems employed electroosmotic flow and gated injection of the feed samples. Detection was accomplished with an appropriate fiber optic arrangement in both the UV and fluorescence modes. Finally, the advantages of this mode of microscale separations are examined.
 

General Papers
7:00 PM-9:00 PM, Sunday, 10 September 2006 Moscone Center -- Hall D, Poster

Division of Analytical Chemistry

The 232nd ACS National Meeting, San Francisco, CA, September 10-14, 2006