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Fully-drawn carbon-based chemical sensors on organic and inorganic surfaces

Authors :
Swager, Timothy M.
Frazier, Kelvin Mitchell
Mirica, Katherine
Walish, Joseph John
Massachusetts Institute of Technology. Department of Chemistry
Frazier, Kelvin Mitchell
Mirica, Katherine
Walish, Joseph John
Swager, Timothy M.
Source :
PMC
Publication Year :
2014

Abstract

Mechanical abrasion is an extremely simple, rapid, and low-cost method for deposition of carbon-based materials onto a substrate. However, the method is limited in throughput, precision, and surface compatibility for drawing conductive pathways. Selective patterning of surfaces using laser-etching can facilitate substantial improvements to address these current limitations for the abrasive deposition of carbon-based materials. This study demonstrates the successful on-demand fabrication of fully-drawn chemical sensors on a wide variety of substrates (e.g., weighing paper, polymethyl methacrylate, silicon, and adhesive tape) using single-walled carbon nanotubes (SWCNTs) as sensing materials and graphite as electrodes. Mechanical mixing of SWCNTs with solid or liquid selectors yields sensors that can detect and discriminate parts-per-million (ppm) quantities of various nitrogen-containing vapors (pyridine, aniline, triethylamine).<br />United States. Army Research Office. Institute for Soldier Nanotechnologies<br />United States. Defense Advanced Research Projects Agency<br />National Institutes of Health (U.S.) (Ruth L. Kirschstein National Research Service Award F32CA157197)<br />National Cancer Institute (U.S.)

Details

ISSN :
14730189
Volume :
14
Issue :
20
Database :
OpenAIRE
Journal :
Lab on a chip
Accession number :
edsair.doi.dedup.....7a0a9c11483f54c66b51f017d3e1418e