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. Author manuscript; available in PMC: 2011 Mar 1.
Published in final edited form as: IEEE Trans Biomed Eng. 2010 Feb 17;57(5):1008–1011. doi: 10.1109/TBME.2009.2039570

Fig. 2.

Fig. 2

Left: configuration of sensor components. Right: force at the tip pushes the reflective plate closer, increasing the reflected light intensity.