Fig. 6
From: Photonic force optical coherence elastography for three-dimensional mechanical microscopy

PF-OCE measurements in the side-by-side sample in the vicinity of the boundary. a Amech (xb, yb, zb) in 3D space (N = 220 beads). b Two en face projections of Amech (xb, yb, zb) over a 75 μm range above and 75 μm range below the plane z = 0 μm, overlaid on the OCT image. c Two en face projections of APT (x, y, z) corresponding to 0.1-μm beads over a 75 μm range above and 75 μm range below the plane z = 0 μm, overlaid on the OCT image. d APT (x, y, z) in 3D space. e, f 2D plot of mechanical and photothermal response against its transverse location e (Amech (xb)) and f (APT (x)), shaded according to their axial positions. The black line shows the mean of all Amech (xb, yb, zb) and APT (x, y, z) at each location on the x-axis. (Scale bars: 20 μm. See Supplementary Movie 1, which sweeps through responses of en face and cross-sectional projections, in addition to showing the OCT images.)