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Trace gas detection using nanostructured graphite layers
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View: Figures


Image of FIG. 1.
FIG. 1.

Schematic diagram for simultaneous amperometric and potentiometric measurement setup.

Image of FIG. 2.
FIG. 2.

Transmission electron microscope (TEM) image of nanostructured graphite. Inset shows lattice resolved TEM image of a crystalline phase of NG particles where the atomic layers are clearly visible.

Image of FIG. 3.
FIG. 3.

(Color online) Surface work function transients for NG functionalization layer as 60, 100, 200, and flow are started and stopped. The inset shows the initial rise rates in surface work function transients plotted against concentration.

Image of FIG. 4.
FIG. 4.

(Color online) (a) Simultaneous conductance (right axis) and surface work function (left axis) changes measured using NG layer when exposed to . The arrows point at the instances for each cycle when the SWF reach their saturation values, (b) Surface work function change plotted against percentage conductance change extracted from the second cycle of Fig. 4(a) (by eliminating the time). The rise and fall slope show almost the same gradient of conductance change. The flat region indicates the saturation of the surface sites with increasing conductance changes.


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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Trace gas detection using nanostructured graphite layers