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Electronic and optical properties of metal-nanoparticle filled graphene sandwiches
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View: Figures


Image of FIG. 1.
FIG. 1.

Schematic representation of the materials studied in this work: (a)single layer graphene, (b) single layer graphene with gold nanoparticles, (c) graphene-metal nanoparticle-graphene sandwich structure, and (d) unfilled double layer graphene.

Image of FIG. 2.
FIG. 2.

Scanning electron microscope image of self-assembled gold nanoparticles grown on graphene substrates. Scale bar is 1 μm.

Image of FIG. 3.
FIG. 3.

Measured optical extinction spectrum of a single layer graphene with gold nanoparticles and a graphene-gold nanoparticle sandwich. Inset: a schematic of the two geometries tested in this experiment.

Image of FIG. 4.
FIG. 4.

Calculated extinction cross section spectrum for bare gold nanoparticles and gold nanoparticles with a graphene shell. Inset: a schematic of the modeled geometries.

Image of FIG. 5.
FIG. 5.

(a) Topography and (b) contact potential difference of two layers of graphene on a silicon substrate across the border between the areas with gold nanoparticles between the sheets (right) and without (left). The fast scan direction is x, and the slow scan direction is y. The curve in (b) shows the contact potential difference averaged over the y direction.


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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Electronic and optical properties of metal-nanoparticle filled graphene sandwiches