%D 2013
%R 10.1117/12.2010079
%O cited By 2; Conference of Energy Harvesting and Storage: Materials, Devices, and Applications IV ; Conference Date: 29 April 2013 Through 1 May 2013; Conference Code:98151
%J Proceedings of SPIE - The International Society for Optical Engineering
%L scholars3523
%X Electrets-based electrostatic energy harvester for harvesting electrical energy from the ambient vibration is introduced and described in this paper. A new design of electrode structure called the trapezoidal electrodes and its electrets counterpart are designed, modeled and analyzed thoroughly to evaluate its performance. First, the theory is explained and the mathematical analysis is performed using Matlab/Simulink tool. Results of the analysis shows that the average output power harvested from the trapezoidal electrodes is �1 mW from 20 Hz at 1 g inputs. Then, the 3D model of the electrodes and electrets structures are constructed, simulated and analyzed with Finite Element Modeling/Analysis (FEM/FEA) tool. Further, mechanical analysis carried out on the trapezoidal electrodes model indicates that it displaces laterally at 94 μm and resonates at 113 Hz whereas the electrostatic analysis unveils 1895 pC of charge density induced on the trapezoidal electrodes from 450 VDC electrets potential. The optimized parameters derive from the analyses are used as a reference for fabrication of MEMS (Micro Electro-Mechanical System) physical device on a standard CMOS process technology. © 2013 SPIE.
%K Average output power; Electromechanical systems; Electrostatic analysis; Electrostatic energies; Energy Harvester; Mathematical analysis; Standard CMOS process; Trapezoidal electrodes, CMOS integrated circuits; Computer simulation; Electrets; Electrodes; Electrostatics; Energy harvesting; Finite element method; MEMS; Tools, Structural design
%C Baltimore, MD
%T Design and modeling of the trapezoidal electrodes array for electrets energy harvester
%A M.R. Ahmad
%A M.H. Md Khir
%A J.O. Dennis
%V 8728