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. Author manuscript; available in PMC: 2015 Jan 1.
Published in final edited form as: Ann Biomed Eng. 2013 Aug 14;42(1):36–49. doi: 10.1007/s10439-013-0886-3

FIGURE 2.

FIGURE 2

The two-axis sensor for mechanical force measurement. (a) Schematic of the two-axis strain gauge configuration; (b) Electrical circuit for strain measurement in one direction; (c) The probing tips for mechanical loading and mechanical characterization. The tips in the top row have flat surfaces, while the tips in the bottom row have semi-spherical surfaces; and (d) The assembled sensor with a semi-spherical tip.