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. Author manuscript; available in PMC: 2017 Jan 1.
Published in final edited form as: ACS Photonics. 2015 Dec 15;3(1):87–95. doi: 10.1021/acsphotonics.5b00466

Figure 2.

Figure 2

(a) Schematic of the PTIR measurement setup. (b) The PTIR signal intensity is determined by the maximum amplitude of the cantilever ring down signal (black dotted line) which is proportional to the energy absorbed by the sample.