Figure 1 | Scientific Reports

Figure 1

From: Soft plasmons with stretchable spectroscopic response based on thermally patterned gold nanoparticles

Figure 1

Fabrication procedures of soft MPCs: (a) Spin-coating of photoresist (PR) onto the ITO glass substrate. (b) Fabrication of PR nano-grating structures using interference lithography. (c) Spin-coating of chemically synthesized gold nanoparticles (Au NP) in colloids with a concentration of 100 mg/ml in xylene. (d) Annealing the sample at 350°C for 20 minutes to confine the gold into the grating grooves so that gratings of gold nanolines (Au NL) are produced interlaced with PR. (e) Spread PDMS on top of the MPC structures. (f) Another piece of ITO glass is placed to cover the PDMS-coated MPCs. (g) The sample is placed in HCl for 2 hours after the cross-linking polymerization process in an oven at 100°C for 50 minutes, so that the ITO layers are sufficiently etched off. (h) The MPCs are transferred to PDMS and the soft MPCs are successfully lifted off the glass substrate.

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