Fig. 5: BSTP imaging of live 3T3 cells.
From: Bond-selective transient phase imaging via sensing of the infrared photothermal effect
a Raw phase image of the cells. b–e BSTP imaging of 3T3 cells at peaks of 2850, 2930, 2950 cm−1, and off-resonance at 2700 cm−1, respectively. The IR illumination area is indicated by the dashed circle in (b). f BSTP intensity profile of a small feature as indicated by the dashed arrow in c. Red line: Gaussian fitting result. Scale bar: 10 µm.
