title: Fully-drawn carbon-based chemical sensors on organic and inorganic surfaces.
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).
authors.affiliation: Department of Chemistry, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, MA 02139, USA. tswager@mit.edu.
authors.forename: Kelvin M
authors.initials: KM
authors.lastname: Frazier
authors.forename: Katherine A
authors.initials: KA
authors.lastname: Mirica
authors.forename: Joseph J
authors.initials: JJ
authors.lastname: Walish
authors.forename: Timothy M
authors.initials: TM
authors.lastname: Swager
mesh_terms: D000537:Aluminum Oxide / Q000737:chemistry*; D000814:Aniline Compounds / Q000032:analysis; D002244:Carbon / Q000737:chemistry*; D004566:Electrodes; D005021:Ethylamines / Q000032:analysis; D005898:Glass / Q000737:chemistry; D010209:Paper; D019904:Polymethyl Methacrylate / Q000737:chemistry*; D011725:Pyridines / Q000032:analysis; D012825:Silicon / Q000737:chemistry*; D013499:Surface Properties
chemical_list: D000814:Aniline Compounds; D005021:Ethylamines; D011725:Pyridines; D002244:Carbon; D019904:Polymethyl Methacrylate; D000537:Aluminum Oxide; C023666:pyridine; C023650:aniline; C016162:triethylamine; D012825:Silicon