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. Author manuscript; available in PMC: 2009 Jan 21.
Published in final edited form as: IEEE Trans Biomed Eng. 2008 Jan;55(1):335–339. doi: 10.1109/TBME.2007.910685

Table I.

Optical Properties of Bulk Substrate and Two Bulk Top-Layer Materials at the Wavelength of 785 nm

substrate Low μa top layer High μa top layer
μa (1/mm) 0.005 0.031 0.097
μs' (1/mm) 1.10 2.14 1.87