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58 results for "Optical metamaterials "

58 results for "Optical metamaterials "

On-chip zero-index metamaterials

Journal Article
Metamaterials with a refractive index of zero exhibit physical properties such as infinite phase velocity and wavelength. However, there is no way to implement these materials on a photonic chip, restricting the investigation and application of zero-index...

Integrated impedance-matched photonic Dirac-cone metamaterials

Conference Paper
We design and fabricate an on-chip Dirac-cone metamaterial with impedance-matched zero index in optical regime. Our metamaterial consists of low-aspect-ratio silicon pillar arrays in an SU-8 matrix clad above and below by gold thin films. This design can...

Dirac-like cone-based electromagnetic zero-index metamaterials

Journal Article

Metamaterials with a Dirac-like cone dispersion at the center of the Brillouin zone behave like an isotropic and impedance-matched zero refractive index material at the Dirac-point frequency. Such metamaterials can be realized in the form of either bulk...