Figure 2From: Reduction in thermal conductivity of Bi thin films with high-density ordered nanoscopic poresSEM images of size-reduced PS and porous and nanoporous Bi thin films. (a, c, e) SEM images (top view) of size-reduced PS of 200, 290, and 750 nm, respectively. (b, d, f) SEM images (top view) of porous Bi thin films using PS of 200, 290, and 750 nm, respectively. SEM images (tit view) of nanoporous Bi thin films shown in (f) before (g) and after (h) 100-nm-thick amorphous silicon oxide deposition.Back to article page