Fig. 1: The realization of topo-optical sensing.
From: A flexible topo-optical sensing technology with ultra-high contrast
a Schematic illustrations and optical microscopic observations on the morphological changes on (b) plain surface and (c) surface patterned with single-line of micro-hole array (Φ = 60 μm, D = 120 μm, h = 12 μm, dot lines showing the location of closed holes) under compression. Laser scanning confocal microscopy (LSCM) images showing top and cross-sectional (for the dash lines in top view images) views of signals induced by (d) random folding on the plain surface, and (e) targeted folding on a micropatterned surface, with the digital analysed results for top view optical signals in (f). g A signal image of green opened book from 3D LSCM reconstruction to show the surface signal with targeted folding. All scale bars are 30 μm.
