Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 7 of 7 for “"metastructures"”.
-
Study on Bandgap Manipulation and Structural Vibration Control in Sandwich Metastructures
… in acoustic and mechanical metamaterials, metastructures with wave manipulation capabilities have opened up new possibilities for structural vibration control. Compared with conventional vibration control approaches, metastructures can attenuate vibrations within specific frequency ranges …
-
Effects of geometry on static and band gap properties of 3D printed metastructures
… topologies on the dynamic and static behavior of metastructures that combine a periodic lattice geometry with locally resonant inclusions. We analyze the influence of lattice geometry on band gap frequencies in terms of the lattice effective static properties. We show that vibration mitigation …
-
Surface-emitting lasers for communications: novel metal-cavity microlasers and high-contrast-grating tunable VCSELs
… gratings as one-dimensional or two-dimensional metastructures integrable on surface-emitting lasers. A wide range of optical functionalities such as broadband reflection, high-Q resonance, filtering, beam-steering, focusing, beam-conversion, and generation of photon orbital angular momentum are …
-
An Exploration of Nonlinear Locally Resonant Metamaterials with Electromechanical and Topological elements
In recent years, the study of metamaterials has been a subject of much interest, with acoustic metamaterials being applied to a wide range of applications. This utility is in part due to the incorporation of various elements in their design. The addition of local resonators provides greater …
-
Implementation of Residual Tandem Neural Networks for Photonic Inverse Design
<p>Deep-learning approaches can greatly benefit the modeling and design of nanophotonic and optical structures. Traditional full-wave simulations are time and resource-intensive, which can act as a bottleneck in photonic design. On the other hand, deep-learning approaches for designing the response …
-
DDA-based Inverse Design of Nanophotonic Metasurfaces: a Benchmarking of Optimization Techniques
This work is an in-depth assessment of the optimization techniques used for metasurface inverse design in the field of nanophotonics. Each technique is detailed and implemented, comparing and contrasting the results produced by the numerical methods. A unique DDA solver is used to speed up the …