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Helium plasma implantation on metals: Nanostructure formation and visible-light photocatalytic response
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10.1063/1.4798597
/content/aip/journal/jap/113/13/10.1063/1.4798597
http://aip.metastore.ingenta.com/content/aip/journal/jap/113/13/10.1063/1.4798597
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

A schematic of the experimental setup. Specimens are exposed to He plasmas in the linear plasma device NAGDIS-II.

Image of FIG. 2.
FIG. 2.

(a) and (b) are the SEM micrographs of the Ti and SS samples, respectively, exposed to the helium plasma. Nanocones are formed on the surface. The surface temperature was approximately 550 K and the incident ion energy and helium fluence are 75 eV and 6.4 × 1025 m−2, respectively.

Image of FIG. 3.
FIG. 3.

(a) and (b) are the TEM micrographs of the Ti and SS samples, respectively, exposed to the helium plasma.

Image of FIG. 4.
FIG. 4.

(a) The setup for total reflectance measurement system. (b) and (c) The angular dependences of the total reflectance of Ti and SS specimens for p and s polarizations, respectively. Open and closed markers correspond to the reflectance before and after the helium irradiation, respectively.

Image of FIG. 5.
FIG. 5.

(a) A picture of a He irradiated Ti. (b) A SEM micrograph of the boundary region between irradiated and non-irradiated areas on the Ti sample.

Image of FIG. 6.
FIG. 6.

SEM micrographs of (a) Ti, (b) Ni, and (c) Fe exposed to the helium plasmas.

Image of FIG. 7.
FIG. 7.

(a) and (b) TEM micrographs of Ti exposed to He plasma at the surface temperature of 850 K and the incident ion energy of 73 eV with the He fluence of 2.6 × 1025 m−2.

Image of FIG. 8.
FIG. 8.

(a) A SEM micrograph of W exposed to He plasma. (b) and (c) TEM micrographs of W exposed to He plasma. (b) is a bright field image and (c) is a dark field image.

Image of FIG. 9.
FIG. 9.

XPS spectra for the nanostructured tungsten and WO3 powder.

Image of FIG. 10.
FIG. 10.

Time courses of MB decolorization over the tungsten samples exposed to helium plasma. The edge wavelengths of the used longpass filters were 520 (square) and 700 nm (circle).

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/content/aip/journal/jap/113/13/10.1063/1.4798597
2013-04-01
2014-04-18
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Helium plasma implantation on metals: Nanostructure formation and visible-light photocatalytic response
http://aip.metastore.ingenta.com/content/aip/journal/jap/113/13/10.1063/1.4798597
10.1063/1.4798597
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