Mechanical-spring model on ZnO submicron rods for a steady response on vertically integrated nanogenerators at multiple harvesting frequencies

摘要: Abstract We have studied the uniaxial compression of ZnO submicron rods grown hydrothermally over Si/Cr/Au and Si/Al substrates such as mechanical springs. used FEM simulations to find oscillation frequency range at which deliver steadiest piezopotential independently they oscillate. A stationary a harmonic spring-mass model were implemented for single multiple rods. measured dimensions rods/μm2 with our SEM/FIB image analysis. Nanoindentation was extract spring constant Young's Modulus The piezopotentials (±3.72, ±5.16 μV) obtained below 500 kHz. methodology described can be helpful design multi-frequency nanogerators.