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. 2020 May 27;25(11):2498. doi: 10.3390/molecules25112498

Figure 2.

Figure 2

The schematic representation of infrared nanospectroscopy principles: thermal extension of a sample and a change of AFM cantilever deflection, as a consequence of the interaction with the incident IR light (AFM-IR) and scattering of the near infrared field from the sample at the metal/metalized probe apex (nano-FTIR).