Fig. 5: External reflection micro-FTIR imaging of the iron oxide model system. | npj Heritage Science

Fig. 5: External reflection micro-FTIR imaging of the iron oxide model system.

From: How to approach long-term monitoring of chemical dynamics in oil paintings?

Fig. 5

The instrumentation is described in S1.1. Example of a chemical image (area dimension 130 × 130 μm2) overlayed onto the visible image, obtained by integrating the positive peak at 1510 cm−1 at Tend. Cassegrain objective 20x (NA 0.6), pixel resolution 2 μm (binned to 4 μm). The approximate dimension of the agglomerate is indicated in the image.

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