Browsing Scholarly Articles by Duke-affiliated Author "Urzhumov, Yaroslav A."

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  • Urzhumov, Yaroslav A.; Landy, Nathan; Ciraci, Dr Cristian; Smith, David R. (COMSOL, Inc., 2012-10)
    Linear wave propagation through inhomogeneous structures of size R≫λ (Fig.1) is a computationally challenging problem, in particular when using finite element methods, due to the steep increase of the number of degrees of ...
  • Urzhumov, Yaroslav A.; Ciraci, Dr Cristian; Smith, David R. (Nature Publishing Group / Macmillan Publishers Ltd., 2013-07)
    Would you ever guess that a microscopic flake of graphite could reverse the diffraction of light? An experiment that demonstrates just such an effect highlights the exciting optical applications of graphene — an atomic ...
  • Urzhumov, Yaroslav A.; Starr, Anthony F.; Smith, David R. (2013-06-07)
    We explore the possibilities coming from transformation acoustics and beyond for creating rigid elastic composite shells capable of suppressing the total scattering cross-section of acoustically large objects. The reported ...
  • Urzhumov, Yaroslav A.; Landy, Nathan; Driscoll, Tom; Basov, Dimitri; Smith, David R. (OSA, 2013-05-03)
    We report stereolithographic polymer-based fabrication and experimental operation of a microwave X-band cloaking device. The device is a relatively thin (about one wavelength thick) shell of an air-dielectric composite, ...
  • Urzhumov, Yaroslav A.; Smith, David R. (2012-01-18)
    Recently, a path towards macroscopic, transparent optical cloaking devices that may conceal objects spanning millions of wavelengths has been proposed [1]. Such devices are designed using transformation optics (TO) [2,3]. ...