Figure 5
From: Use of SU8 as a stable and biocompatible adhesion layer for gold bioelectrodes

Evolution of optical characteristics of SU8/Au-A films with immersion time (the films were prepared by following Protocol A in Fig. 3). (a–d) Plots of transmittance versus wavelength at t = 0, 168, 326 and 672 hr, showing good stability in the spectral characteristics up to 326 hrs, followed by significant changes thereafter. (e–h) Reflection micrographs at t = 0, 168, 326 and 672 hr, showing wrinkling (168, 326 hr) and eventual tearing of the SU8/gold bilayer (672 hr). Scale bars denote 50 μm.