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. 2017 Jul 31;7:6855. doi: 10.1038/s41598-017-06926-1

Figure 8.

Figure 8

The mechanical setup. The measurement assembly containing two sets of 3-D printed holder and two sets of micro-positioner. The positioners are attached on a plate (optical table). The whole sensor can be mounted on a three axis rotational arm to align precisely against hand or ear lobe for human trial.