Browse Illinois Research and Scholarship (Open Community) by Author "Gelda, Dhruv"

  • Reducing extrinsic damping of surface acoustic waves at gigahertz frequencies 
    Gelda, Dhruv; Sadhu, Jyothi; Ghossoub, Marc G.; Ertekin, Elif; Sinha, Sanjiv (Journal of Applied Physics, 2016-04-22)
    High-frequency surface acoustic waves (SAWs) in the GHz range can be generated using absorption from an ultrafast laser in a patterned metallic grating on a substrate. Reducing the attenuation at these frequencies can yield ...

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  • Specularity of Longitudinal Acoustic Phonons at Rough Surfaces 
    Gelda, Dhruv; Ghossoub, Marc G.; Valavala, Krishna; Ma, Jun; Rajagopal, Manjunath C.; Sinha, Sanjiv (Physical Review B, 2018-01-26)
    The specularity of phonons at crystal surfaces is of direct importance to thermal transport in nanostructures and to dissipation in nanomechanical resonators. Wave scattering theory provides a framework for estimating w ...

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