Journal
PHYSICAL REVIEW B
Volume 87, Issue 12, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.87.125137
Keywords
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Funding
- EPSRC through the University of Exeter's Doctoral Training Account
- QUEST programme grant [EP/I034548/1]
- BAE Systems
- Engineering and Physical Sciences Research Council [EP/G04841X/1, EP/I034548/1] Funding Source: researchfish
- EPSRC [EP/G04841X/1, EP/I034548/1] Funding Source: UKRI
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By suitably patterning a metasurface, the phase velocity of surface waves may be manipulated. Here, a low-loss, thin (1/14th of the free-space wavelength), omnidirectional Luneburg lens, based upon a Sievenpiper mushroom array [Sievenpiper et al., IEEE Trans. Microwave Theory Tech. 47, 2059 (1999)], is fabricated and characterized at microwave frequencies. Surface waves excited using a near-field point source on the perimeter of the lens, exit the opposite side of the lens as planar wave fronts. The electric field of the surface wave is mapped out experimentally and compared to numerical simulations. DOI: 10.1103/PhysRevB.87.125137
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