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We report on the design of a tunable reflection-based lenslet composed of a periodic metal-dielectric multilayer system of silver and 4-N, N-dimethylamino-4′-N′-methyl-stilbazolium tosylate (DAST) that is capable of resolving fine object details with subwavelength resolution of up to λ/9 in the near field. Total internal reflection is achieved on the lenslet edges, with electrical control of the hyperbolic...
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