Figure 4

(a) The XRD spectrum of the Au film. The black spectrum is the XRD spectrum of the Au films coated on the PI fiber. The red spectrum is the XRD spectrum of the Au films coated on the PI film. (b) The surface morphology from AFM of 10 nm Au film coated on the silicon substrate22. (Reproduced from ref. 22. with permission from The Royal Society of Chemistry).