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Near field photothermal printing of gold microstructures and nanostructures
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View: Figures


Image of FIG. 1.
FIG. 1.

Schematic of NPTP processes. (a) A thin gold film is coated on a glass slide. (b) A 1D grating PDMS mold is placed on top of a gold thin film followed by laser pulse illumination. (c) Gold nanowires form after exposure. (d) Rotate the PDMS mold and repeat the above processes (b). (e) Isolated gold squares form. (f) Gold squares bead up and form nanospheres after flood laser exposure.

Image of FIG. 2.
FIG. 2.

(a) PDMS mold with a periodicity of is positioned in contact with a 10 nm gold film on a glass substrate. (b) Electric field distribution simulated using the FDTD method. (c) Energy density distribution plotted on the gold surface.

Image of FIG. 3.
FIG. 3.

Photothermal annealed periodic structures. (a) 380 nm wide gold nanowires; (b) gold squares; (c) 400 nm diameter gold nanospheres form orthogonal array after flood exposure; (d) hexagonal gold nanosphere array.

Image of FIG. 4.
FIG. 4.

NPTP printing of arbitrary gold structures (a) PDMS phase-shifting mask used to print arbitrary patterns; [(b)–(e)] arbitrary gold patterns printed using NPTP; (f) “UCLA” pattern with smallest line width of .


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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Near field photothermal printing of gold microstructures and nanostructures