SUBJECT: Ph.D. Proposal Presentation
BY: Amirebrahim Darabi
TIME: Thursday, January 19, 2017, 10:00 a.m.
PLACE: MRDC Building, 4211
TITLE: Metamaterial-Inspired Electroelastoacoustic Energy Harvesting
COMMITTEE: Dr. Leamy, Chair (ME)
Dr. Ruzzene (AE)
Dr. Sabra (ME)
Dr. Ferri (ME)
Dr. Rimoli (AE)
Dr. Jacobs (CE)


This thesis proposal covers three objectives for achieving Metamaterial-Inspired Electroelastoacoustic Energy Harvesting. Each objective is detailed with proposed work aimed at significantly advancing the current understanding of mechanical wave energy harvesting. The first objective aims to “Develop and experimentally validate an acoustoelastic waves in plate-harvester systems including multiple scatterers.” The overall goal of this objective is to enhance the wave power generated by a circular piezoelectric disk attached to an infinite host layer with the addition of multiple cylindrical inclusions. Representative experiments will be carried out to demonstrate the validity of the analytical approach. The goal of second objective is to “Enhance the energy of elastic waves in gradient index metamaterials using a multiple scattering method.” It also extends the understanding of structure-borne elastic wave energy harvesting, theoretically and experimentally, by exploiting a Gradient-Index (GRIN) metamaterial. The third proposed objective is to “Realize topologically-protected modes in weakly coupled arrays employing piezoelectric transducers” using a two-dimensional topological insulator based on an array of microwave piezoelectric resonators. The resonators are coupled electrically, but acoustically isolated. Both the acoustic and electric response will show the essential features of topological insulator, e.g., helical edge states.