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As a superlens to overcome the well-known diffraction limit, the hyperlens has received much attention due to its super resolving power and magnifying capabilities. In this article, we review the recent developments, including theoretical and experimental studies on the hyperlens. We also discuss its limitations and potential.
The imaging resolution of conventional optical lens system is limited by the diffraction to the order of half wavelength. We describe a few emerging microscopy techniques that utilize optical hyperlens, far-field superlens, and plasmonic structured illumination to improve the resolution beyond the diffraction limit.
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