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Enhancement of sensitivity in gas chemiresistors based on carbon nanotube surface functionalized with noble metal (Au, Pt) nanoclusters
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10.1063/1.2722207
/content/aip/journal/apl/90/17/10.1063/1.2722207
http://aip.metastore.ingenta.com/content/aip/journal/apl/90/17/10.1063/1.2722207
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Figures

Image of FIG. 1.
FIG. 1.

FEG-SEM top-view image at high magnification of (left) unmodified MWCNT films, (center) Pt-modified MWCNT films, and (right) Au-modified MWCNT films prepared by rf-PECVD onto alumina substrates. The nominal thickness of MWCNTs is . The nominal thicknesses of Pt and Au catalysts are 3 and , respectively.

Image of FIG. 2.
FIG. 2.

(Color online) Time response of the electrical resistance change for a chemiresistor based on unfunctionalized MWCNT films and Pt- and Au-modified MWCNT films towards (top) and (bottom) gases, at working temperature of . The MWCNT film thickness is and the nominal thicknesses of Pt and Au catalysts are 3 and , respectively.

Image of FIG. 3.
FIG. 3.

(Color online) Calibration curves in terms of the percentage relative electrical resistance change for a chemiresistor based on unfunctionalized MWCNT films and Pt- and Au-modified MWCNT films towards (top) and (bottom) gases, at working temperature of . The MWCNT film thickness is and the nominal thicknesses of Pt and Au catalysts are 3 and , respectively. The inset in each plot shows the chemical patterns of the tailored sensitivity.

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/content/aip/journal/apl/90/17/10.1063/1.2722207
2007-04-27
2014-04-19
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Enhancement of sensitivity in gas chemiresistors based on carbon nanotube surface functionalized with noble metal (Au, Pt) nanoclusters
http://aip.metastore.ingenta.com/content/aip/journal/apl/90/17/10.1063/1.2722207
10.1063/1.2722207
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