By changing channel geometry, other sensing modes besides strain are possible, including pressure, shear, and curvature (Vogt et al. 2013).
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By stacking several different channel shapes, a single device capable of multiple types of sensing is possible (Vogt et al. 2013).
Three U-shaped microchannels at 120o intervals to detect forces in three directions. |
Three microchannels with increased spatial resolution |