Publications

Displaying 1 - 4 of 4

Persistent nonlinear phase-locking and nonmonotonic energy dissipation in micromechanical resonators

December 5, 2022

Author(s)

Mingkang Wang, Diego J. Perez, Omar Lopez, Vladimir Aksyuk

Many nonlinear systems can be described by eigenmodes with amplitude dependent frequencies, interacting strongly whenever the frequencies become commensurate. Fast energy exchange via internal resonances holds the key to rich dynamical behavior, such as

PERIOD TRIPLING STATES AND NON-MONOTONIC ENERGY DISSIPATION IN COUPLED MEMS RESONATORS

June 5, 2022

Author(s)

Vladimir Aksyuk, Omar Lopez, Mingkang Wang, Diego Perez-Morelo

When two eigenmodes are at internal resonance (IR), i.e. they have commensurate eigenfrequencies, their coupling strength can be significantly enhanced. Rich nonlinear dynamics have been shown at IR. In this work, we present a novel non-monotonic energy

Kirigami engineering - Nanoscale structures exhibiting a range of controllable 3D configurations

December 22, 2020

Author(s)

Xu Zhang, Lior Medina, Haogang Cai, Vladimir Aksyuk, Horacio Espinosa, Omar D. Lopez

Kirigami structures provide a promising approach to transform flat films with patterns of cuts into 3D complex structures that are difficult to achieve by conventional fabrication approaches. This work demonstrates that by fine tuning the cutting geometry

A micromirror array with annular partitioning for high-speed random-access axial focusing

October 29, 2020

Author(s)

Nathan T. Ersumo, Cem Yalcin, Nick Antipa, Nicolas Pegard, Laura Waller, Omar D. Lopez, Rikky Muller

Dynamic axial focusing functionality has recently seen widespread incorporation in microscopy, augmented/virtual reality (AR/VR), adaptive optics, and material processing. Yet the limitations of existing varifocal tools continue to beset the performance

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