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Proc Natl Acad Sci U S A

Title:		Rapid prototyping of carbon-based chemiresistive gas sensors on paper
Author(s):		Mirica KA; Azzarelli JM; Weis JG; Schnorr JM; Swager TM;
Address:		"Department of Chemistry, Massachusetts Institute of Technology, Cambridge, MA 02139, USA"
Journal Title:		Proc Natl Acad Sci U S A
Year:		2013
Volume:		20130813
Issue:		35
Page Number:		E3265 - E3270
DOI:		10.1073/pnas.1307251110
ISSN/ISBN:		1091-6490 (Electronic) 0027-8424 (Print) 0027-8424 (Linking)
Abstract:		"Chemically functionalized carbon nanotubes (CNTs) are promising materials for sensing of gases and volatile organic compounds. However, the poor solubility of carbon nanotubes hinders their chemical functionalization and the subsequent integration of these materials into devices. This manuscript describes a solvent-free procedure for rapid prototyping of selective chemiresistors from CNTs and graphite on the surface of paper. This procedure enables fabrication of functional gas sensors from commercially available starting materials in less than 15 min. The first step of this procedure involves the generation of solid composites of CNTs or graphite with small molecule selectors--designed to interact with specific classes of gaseous analytes--by solvent-free mechanical mixing in a ball mill and subsequent compression. The second step involves deposition of chemiresistive sensors by mechanical abrasion of these solid composites onto the surface of paper. Parallel fabrication of multiple chemiresistors from diverse composites rapidly generates cross-reactive arrays capable of sensing and differentiating gases and volatile organic compounds at part-per-million and part-per-thousand concentrations"
Keywords:		"Gases/*chemistry Microscopy, Electron, Scanning Nanotubes, Carbon/*chemistry *Paper Principal Component Analysis electronic nose gas sensor arrays mechanochemistry nanocarbon pencil;"
Notes:		"MedlineMirica, Katherine A Azzarelli, Joseph M Weis, Jonathan G Schnorr, Jan M Swager, Timothy M eng F32 CA157197/CA/NCI NIH HHS/ F32CA157197/CA/NCI NIH HHS/ Research Support, N.I.H., Extramural Research Support, U.S. Gov't, Non-P.H.S. 2013/08/15 Proc Natl Acad Sci U S A. 2013 Aug 27; 110(35):E3265-70. doi: 10.1073/pnas.1307251110. Epub 2013 Aug 13"