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Influence of laser irradiation and microwave plasma treatment on the thermal properties of graphene platelets
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10.1116/1.4809581
/content/avs/journal/jvsta/31/4/10.1116/1.4809581
http://aip.metastore.ingenta.com/content/avs/journal/jvsta/31/4/10.1116/1.4809581

Figures

Image of FIG. 1.
FIG. 1.

(Color online) Schematic illustration of stacking of different layers in all the samples.

Image of FIG. 2.
FIG. 2.

(a) SEM image of untreated GP Film deposited on Cu substrate. (b) SEM image of surface of the GP film that was laser treated. (c) SEM image of surface of the GP film that was hydrogen plasma treated for 5 min.

Image of FIG. 3.
FIG. 3.

(Color online) Raman spectra from films of GP for different treatments are shown. The spectra are shifted vertically, and the three different peaks are labeled.

Image of FIG. 4.
FIG. 4.

(Color online) Normalized TTR signal from In-Au-gr-Cu sample shown as a function of time. The wavy signal (blue) is experimental and the smooth line (red) is the simulated result. Thickness of In, Au, and GP films were 1.5, 1.5, and 4m, respectively.

Image of FIG. 5.
FIG. 5.

(Color online) Normalized TTR signal from In-Au-gr-laser-Cu sample shown as a function of time. The wavy signal (blue) is experimental and the smooth line (red) is the simulated result. Thickness of In, Au, and GP film are 0.7, 1.5, and 3 m, respectively.

Image of FIG. 6.
FIG. 6.

(Color online) Normalized TTR signal from In-Au-gr-PL1-Cu sample shown as a function of time. The wavy signal (blue) is experimental and the smooth line (red) is the simulated result. Thickness of In, Au, and GP film are 1, 1.7, and 2.5 m, respectively.

Image of FIG. 7.
FIG. 7.

(Color online) Normalized TTR signal from In-Au-gr-PL2-Cu sample shown as a function of time. The wavy signal (blue) is experimental and the smooth line (red) is the simulated result. Thickness of In, Au and GP film are 0.6, 1.7, and 1.5 m, respectively.

Image of FIG. 8.
FIG. 8.

(Color online) Normalized TTR signal of the simulated results in all the four samples shown in Figs. 4–7 .

Tables

Generic image for table
TABLE I.

Parameters used in the curve fitting of Raman spectra in all the samples. The position and the FWHM are given in cm. is the crystallite size, and is the size of the defect region in nm. Ratio of intensity of D peak to that of G peak, /, is shown.

Generic image for table
TABLE II.

Thermal conductivity of GP film, K(gr), interface thermal conductance between In and Au, h(In-Au), and interface thermal conductance between Au and GP film, h(Au-gr) evaluated from analysis of TTR signal. Interface thermal conductance between GP film and Cu was close to that of Au and GP film. The thickness of the GP film was 4 m for the as deposited, 3 m for the laser irradiated, 2.5 m for the plasma treated for 300 s, and 1.5 m for the plasma treated for 600 s.

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/content/avs/journal/jvsta/31/4/10.1116/1.4809581
2013-06-05
2014-04-17
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Influence of laser irradiation and microwave plasma treatment on the thermal properties of graphene platelets
http://aip.metastore.ingenta.com/content/avs/journal/jvsta/31/4/10.1116/1.4809581
10.1116/1.4809581
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