Tags: metamaterials

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  1. Acoustic Power Transfer Leveraging Piezoelectricity and Metamaterials

    15 Sep 2021 | Contributor(s):: Allam, Ahmed

    Advisors: Alper Erturk, Karim Sabra, Julien Meaud, Massimo Ruzzene, Fabio Semperlotti, Chengzhi ShiAcoustic power transfer, or ultrasonic power transfer (UPT) more specifically, has received growing attention as a viable approach for wireless power delivery to low-power electronic devices. It has...

  2. Bandgap Formation and Tuning in Stimuli-Responsive Hydrogel-Based Periodic Structures

    10 Jun 2021 | Contributor(s):: Patel, Herit

    Advisors: Alper Erturk, Yuhang Hu, Karim SabraOver the past two decades, researchers have studied elastic/acoustic metamaterials and phononic crystals to enable certain structural properties that are not found in ordinary materials. One such property is the formation of a bandgap (a frequency...

  3. Multifunctional Piezoelectric Metastructures for Vibration Attenuation and Energy Harvesting

    10 Jun 2021 | Contributor(s):: Khattak, Mohid Muneeb

    Advisors: Alper Erturk, Aldo A. Ferri, Julien MeaudOver the past two decades, there has been a substantial increase in research conducted on energy harvesting techniques. With the developments in low-power electronic devices and sensors, such as wearable electronics and wireless sensors used in...

  4. Dynamics and Topology of Nonlinear and Aperiodic Metastructures

    11 Jan 2021 | Contributor(s):: Xia, Yiwei

    Advisors: Alper Erturk, Massimo Ruzzene, Julien Meaud, Martin Maldovan, Andrea AluMetamaterials and metastructures (i.e., metamaterial-based finite structures with specified boundary conditions) enable various properties that are not found in ordinary materials and structures. For example,...

  5. Exploring Metamaterials for the Control of Mass Diffusion

    20 May 2020 | Contributor(s):: Restrepo Florez, Juan Manuel

    Advisors: Martin Maldovan, David S. Sholl, Christopher W. Jones, Ryan P. LivelyIn this work we have explored the use of metamaterials theory for the design of materials and devices able to control mass diffusion at will. First, we focus in the design of metamaterials able to control the diffusion...

  6. Plasmonic Nanostructures and Metamaterials for Nanoscale Light-Matter Interaction

    14 Jan 2020 | Contributor(s):: Shams Mousavi, Seyed Hamed

    Advisors: Ali Adibi, Mostafa A. El-Sayed, Wenshan Cai, Benjamin Klein, Zhigang Jiang, Hayk HarutyunyanThe objective of this dissertation is to study the light-matter interaction phenamena at nanoscale in the presence of plasmonic nanostructures and metamaterials. Using the principles of...

  7. Dynamics of Mechanical and Electromechanical Locally Resonant Metastructures

    21 Aug 2019 | Contributor(s):: Sugino, Christopher

    Advisors: Alper Erturk, Massimo Ruzzene, Levent Degertekin, Aldo Ferri, Laurence Jacobs, Yang WangLocally resonant (LR) elastic/acoustic metamaterials enable bandgap formation at wavelengths much longer than the lattice parameter for low frequency vibration/sound attenuation. Mechanical LR...

  8. Wave Propagation in Space and Time Modulated Structures

    31 May 2018 | Contributor(s):: Trainiti, Giuseppe

    Advisors: Massimo Ruzzene, Julian J. Rimoli, Graeme J. Kennedy, Claudio V. Di Leo, Karim G. Sabra, Alper ErturkThis thesis investigates structures with spatial and temporal modulation of the effective mechanical properties, contributing to the state-of-the-art of wave propagation control...

  9. Plasmonic Metamaterials as an Optoelectronic Platform for Active and Nonlinear Nanophotonics

    07 Jun 2017 | Contributor(s):: Lan, Shoufeng

    Advisors: Wenshan Cai, Ali Adibi, Bernard Kippelen, Azad Naeemi, Michael FillerThe ultimate goal of this thesis is to develop meta-structured devices that simultaneously sustain both electrical and optical functionalities. An asymmetric plasmonic grating was designed for not only the excitation...

  10. Static and Dynamic Properties of Reconfigurable Magneto-Elastic Metastructures

    11 Jan 2017 | Contributor(s):: Schaeffer, Marshall

    Advisors: Massimo Ruzzene, Michael Leamy, Alper Erturk, Aldo Ferri, Julian Rimoli, Karim SabraThis thesis presents the investigation of lattice structures for the purpose of providing novel pathways for wave and mechanical property control. Structures of the type studied are often called...

  11. Enhancing Chiroptical Signals From Metamaterials via Nonlinear Excitation

    07 Jan 2016 | Contributor(s):: Rodrigues, Sean Phillip

    Advisors: Wenshan Cai, Mohan Srinivasarao, Vladimir TsukrukAs natural chiral materials demonstrate limited circularly dichroic contrasts, enhancement of these polarization dependent signals has long been the focus of chiral metamaterial research. By manipulating the geometric chirality of...