Akademik Veri Yönetim Sistemi
Annual International Congress on Renewable Energy, Oxford, İngiltere, 3 - 05 Eylül 2024, ss.1
Environmental problems and energy prices owing to the fossil fuels are the
vital issues dealt with by the scientific community. Alternative to the fossil energy
sources, energy can be harvested from various eco-friendly potential sources
such as solar, wind, thermal, mechanical vibration, and biochemical energy
sources. Acoustic energy is the accessible, usable, and clean wasted energy
source prevalent in the surroundings. Obtaining higher acoustic energy
efficiency, electromechanical resonators such as Helmholtz resonators can be
utilized to amplify the acoustic signals. By doing so, more interaction of
structures with acoustic emissions is achieved in static or dynamic modes.
Particularly, resonant micro-cantilevers considerably respond to static
acoustic forces under single- and multi-frequency operations. Crucially,
oscillation observable responses such as amplitude and phase shift
significantly vary as the acoustic force strength changes. In the view of the
virial theorem and energy conservation principle, energy storage processes for
oscillating micro-cantilevers undergoing acoustic forces can be described using
virial and dissipated power. Higher energy can be stored by optimizing
excitation schemes considering micro-cantilever properties and effective sound
pressure levels. Therefore, using resonating micro-structures brings great
potential to harvest acoustic energy for powering the microelectronic devices
with low energy consumption.