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Polycrystalline graphene sensors easily obtained through chemical vapor deposition (CVD) have been developed for chemical sensing. We show that linear defects or continuous lines of point defects on these sensors result in significantly higher sensitivity than that of pristine graphene and carbon nanotube film sensors. Further sensitivity enhancement is obtained by cutting the graphene into ribbons...
Polycrystalline graphene sensors are presented by Richard I. Masel and co‐workers on page 53. The image shows polycrystalline graphene ribbon chemiresistors with gold contacts visualizing linear defects or wrinkles in the graphene. Floating or attached toluene molecules act as electron donors. Such defective graphene devices exhibit a higher chemical sensitivity than pristine graphene or carbon nanotube...
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