One minus this quantity appears in the numerator of Stoney's formula, which governs the deflection of MEMS cantilevers. This quantity is equal to quan
One minus this quantity appears in the numerator of Stoney's formula, which governs the deflection of MEMS cantilevers. This quantity is equal to quantity E over 2G all minus one, and like E and G, it can be measured using the impulse excitation technique. Materials like Gore-Tex, paper, and graphene have negative values for this quantity and are called auxetic. This parameter governs an effect in which compression along one (*) axis causes stretching along the other two axes. For a stable, isotropic, linearly elastic material, this value varies between negative one and positive one-half, because the bulk, shear, and Young's modulus all have to be positive. For 10 points, name this material quantity equal to the negative transverse strain over the axial strain.
One minus this quantity appears in the numerator of Stoney's formula, which governs the deflection of MEMS cantilevers.
Poisson's ratio