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Removal of a hydrogenated amorphous carbon film from the tip of a micropipette electrode using direct current corona discharge
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10.1063/1.3309784
/content/aip/journal/rsi/81/2/10.1063/1.3309784
http://aip.metastore.ingenta.com/content/aip/journal/rsi/81/2/10.1063/1.3309784
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

Schematic of the configuration of an a-C:H-coated micropipette electrode and plate electrode (ground) with an electrical circuit for corona discharge.

Image of FIG. 2.
FIG. 2.

(a) Typical discharge current (left scale) of an a-C:H-coated micropipette electrode with time. Applied voltage (right scale) increased in steps of per 5.0 s. (b) Discharge current (left scale) of the same electrode for a subsequent discharge test.

Image of FIG. 3.
FIG. 3.

Photograph of luminescence at the tip of a micropipette electrode in the glow corona mode.

Image of FIG. 4.
FIG. 4.

Changes in discharge current for four micropipette electrodes. One division on the horizontal scale is equivalent to 100 V at 100 s. The circles at the end of the current curves indicate the terminated points of discharge, for which the voltages are (a) 1840 V, (b) 1850 V, (c) 1920 V, and (d) 2260 V.

Image of FIG. 5.
FIG. 5.

Scanning electron micrographs of tips of micropipette electrodes after voltage application. Images (a), (b), (c), and (d) correspond to the discharge termination points shown in Fig. 4. Image (e) is an enlargement of image (c).

Image of FIG. 6.
FIG. 6.

Relationship between gap distance and onset voltage for micropipette electrodes with a-C:H films deposited under three different conditions. Onset voltage is defined to be voltage applied when discharge current reaches .

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/content/aip/journal/rsi/81/2/10.1063/1.3309784
2010-02-17
2014-04-19
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Removal of a hydrogenated amorphous carbon film from the tip of a micropipette electrode using direct current corona discharge
http://aip.metastore.ingenta.com/content/aip/journal/rsi/81/2/10.1063/1.3309784
10.1063/1.3309784
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