Dielectric metamaterial magnifier creating a virtual color image with far-field subwavelength information.
We propose an approach for far-field optical subwavelength imaging by using a dielectric metamaterial magnifier with gradient refractive index. Different from previous superlens and hyperlens that form a real image with subwavelength features within narrowband, this magnifier creates a virtual color image with sub-100 nm resolution over broadband that can be captured directly by a conventional microscope in the far field. Because the magnifier is made of isotropic dielectric materials, the fabrication will be greatly simplified with existing metamaterial technologies.
Zhang
Baile
B
Singapore-MIT Alliance for Research and Technology (SMART) Centre, Singapore 117543. bzhang@mit.edu
Barbastathis
George
G
D003116:Color; D004867:Equipment Design; D019544:Equipment Failure Analysis; D007089:Image Enhancement / Q000295:instrumentation*; D007909:Lenses; D012031:Refractometry / Q000295:instrumentation*