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. Author manuscript; available in PMC: 2014 Jun 6.
Published in final edited form as: J Phys Chem Lett. 2013 May 21;4(11):1924–1927. doi: 10.1021/jz4008036

Figure 2.

Figure 2

a.) Phasor plot showing clusters of pixels with similar response in the unpurified fossil eumelanin. The color bar shows the color scheme used for pump-probe images, where pixels falling into the circles are colored accordingly, and pixels between those circles are interpolated to a shade in between. b.) Averaged pixels in corresponding regions of the phasor plot. c.) Pump-probe image of the fossil eumelanin on a glass slide with pixels colored according to the phasor color scheme. Scale bar = 100 µm. d.) Pump-probe image of purified S. officinalis eumelanin on a glass slide with pixels colored according to the phasor color scheme. Scale bar = 100 µm.