Simultaneous energy harvesting and vibration control in a nonlinear metastructure: A spectro-spatial analysis

Minimal model of an active solid deviates from equilibrium mechanics

“…( 11), correctly describes such a deformation in our building block; we numerically solve Eq. ( 7) under the following parameters: ε = {0.2, 0.17} , β = 2, f = [1,5], and Ω = 1.5. Note that the previous parameters were chosen in such a way that the acting forces in the building block do not deform it beyond a third of its original equilibrium distance a.…”

“…The materials science community [1][2][3][4][5] is already designing and characterizing metamaterials or metastructures defined as synthetic materials with deliberately designed structures. These metastructures are found to present exotic behavior such as the ability to prevent wave propagation through them 1,2,4 (the so-called bandgap), negative Young's modulus 6 , a negative index of refraction 7 , or a negative effective mass density 6 .…”

“…Quite recently, and by exploiting 3D printing techniques researchers have designed metamaterials with programmable response to uniaxial compression 13 , a negative Poisson's ratio 14 or even materials with a nearly constant stiffness at very low densities 15 . Metamaterials are also being used for vibration suppression and energy harvesting 9,10,[16][17][18][19][20] .…”

“…and the numerical solution (blue circles) of Eq. (7) with ε = {0.2, 0.17} , β = 2, f =[1,5], and Ω = 1.5.…”

Perspectives on spintronic diodes

“…A future direction for non-resonant STD can be the use of ferromagnets with sub-MHz dynamics to develop new device concepts coupling magnetization dynamics with linear and nonlinear mechanical resonances. 21,22 STDs working in active regime.…”