Additional file 1.

Low magnification SEM images of gold nanoparticle arrays fabricated using differently treated surfaces and annealing techniques. SEM images of gold nanoparticle arrays prepared using differently treated surfaces and annealing techniques. (a) hydrophilic surface (piranha)/plasma treatment, (b) hydrophilic surface (piranha)/flame annealing, and (c) hydrophobic surface (HF treatment)/flame annealing. Scale bar is 1 μm. (DOC 4990 kb)

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Scheeler et al. Nanoscale Research Letters 2012 7:450   doi:10.1186/1556-276X-7-450