Figure 1.

(a) Human skin absorption spectra in the of NIR-I, NIR-II, and NIR-III regions. (b) Absorption and scattering spectra from oxygenated blood, deoxygenated blood, skin and fatty tissue. Reproduced with permission from (Figure 1(a), [14] Copyright 2009 RSC Publishing; Figure 1(b), [18] Copyright 2016 RSC Publishing).