Figure 1
Quantitative micro-elastography working principle.
(a) Schematics of the (i) unloaded and (ii) preloaded setup. (b,c) Corresponding OCT B-scans indicating the original and preloaded sensor thicknesses, 
and 
, respectively. (d) Stress-strain curve of the sensor material. In the inset, the stress, 
, due to actuation is estimated using the tangent to the curve at the preload strain (0.2 in this example). (e) B-scan view of the displacement due to micrometre-scale actuation; dotted line indicates the sensor-sample interface. (f) Corresponding strain in the sample, indicating the depth range over which strain is averaged, 
, to generate a 2D quantitative micro-elastogram.
