Rolled-up nanotechnology for the fabrication of three-dimensional fishnet-type GaAs-metal metamaterials with negative refractive index at near-infrared frequencies
Andreas Rottler, Malte Harland, Markus Bröll, Stephan Schwaiger, Daniel Stickler, Andrea Stemmann, Christian Heyn, Detlef Heitmann, Stefan Mendach
APPLIED PHYSICS LETTERS
Volume: 100, Issue: 15, 13 April 2012
151104 - 151104-5
We propose and demonstrate the fabrication of a three-dimensional fishnet metamaterial by utilizing rolled-up nanotechnology. It consists of 6 alternating layers of silver and (In)GaAs with an array of subwavelength holes “drilled” by focused ion beams. By means of finite-integration technique simulations, we show that the fabricated structure is a single-negative material possessing a negative real part of the refractive index in the near-infrared regime. We show that the fabricated material can be made double negative by slightly changing the size of the holes.
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