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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).

SUBMITTER: Frazier KM 

PROVIDER: S-EPMC4180506 | biostudies-literature | 2014 Oct

REPOSITORIES: biostudies-literature

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

Frazier Kelvin M KM   Mirica Katherine A KA   Walish Joseph J JJ   Swager Timothy M TM  

Lab on a chip 20141001 20


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  ...[more]

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