Mechanical Properties of the Paper Cantilever Beam
We first characterized the stiffness of the paper
cantilever beams using a precision balance (force resolution:
1 μN), by measuring forces applied to the free end of a paper
cantilever as a function of the beam deflections. The stiffness
of a paper cantilever (44.5 mm long, 7.7 mm wide, and 0.34
mm thick) was determined to be 2.0±0.16 mN/mm (N=7).
We also calculated the Young’s modulus of the paper
material using the beam equation: