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Microplasma enhancement via the formation of a graphite-like phase on diamond cathodes
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10.1116/1.4769373
/content/avs/journal/jvstb/31/2/10.1116/1.4769373
http://aip.metastore.ingenta.com/content/avs/journal/jvstb/31/2/10.1116/1.4769373

Figures

Image of FIG. 1.
FIG. 1.

(Color online) Schematic diagram of the cylindrical microplasma cavities.

Image of FIG. 2.
FIG. 2.

SEM images of (a) MCDpristine and (b) Fe/pa-processed (900 °C, 5 min in H2) MCD films.

Image of FIG. 3.
FIG. 3.

(Color online) (a) EFE properties and (b) Raman spectra of (I) MCDpristine and (II) as-Fe-coated and (III) Fe/pa-processed (900 °C, 5 min in H2) MCD films.

Image of FIG. 4.
FIG. 4.

(Color online) EFE properties of post-treated diamond films: (I) MCDpristine, (II) Fe/pa-MCD, (III) Fe/pa-MCD1, (IV) Fe/pa-MCD2, (V) Fe/pa-MCD3.

Image of FIG. 5.
FIG. 5.

(Color online) Plasma illumination properties of MCD films (a)Fe/pa-MCD0, (b) Fe/pa-MCD1, (c) Fe/pa-MCD2, (d) Fe/pa-MCD3.

Image of FIG. 6.
FIG. 6.

(Color online) (a) TEM bright field and (b) and (c) structure images of the regions near the center of the diamond grains (region A in “a”) and (d) and (e) that of the regions in the periphery of the diamond grains (region B in “a”), showing the presence of planar defects inside the diamond grains and the existence of Fe-, Fe3C, and nanographitic (or amorphous carbon) clusters in the surrounding regions.

Image of FIG. 7.
FIG. 7.

(Color online) (a) HAADF images and (b) EDAX (STEM) profiles of the MCD films, which were Fe/pa in H2-atmosphere at 900 °C for 5 min. Spectra I, II, and III correspond to the locations A, B, and C designated in “a.”

Image of FIG. 8.
FIG. 8.

(Color online) TEM 3D-tomographic projections of the Fe/pa MCD films: (a) Fe3C-clusters (white color), (b) Fe-clusters (red color), and (c) the superposition of the Fe3C- and Fe-3D-tomographs.

Image of FIG. 9.
FIG. 9.

(Color online) X–Y projection of the TEM 3D-tomographs of the Fe/pa MCD films, (a) Fe3C-clusters (white color), (b) Fe-clusters (red color), and (c) the superposition of the Fe3C- and Fe-projections.

Tables

Generic image for table
TABLE I.

EFE properties of the pristine, as Fe-coated and Fe-coated/postannealed MCD films.

Generic image for table
TABLE II.

Surface EFE and plasma illumination properties of the two-step post-treated MCD films.

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/content/avs/journal/jvstb/31/2/10.1116/1.4769373
2012-12-10
2014-04-20
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Microplasma enhancement via the formation of a graphite-like phase on diamond cathodes
http://aip.metastore.ingenta.com/content/avs/journal/jvstb/31/2/10.1116/1.4769373
10.1116/1.4769373
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