title: Demonstration of nanoimprinted hyperlens array for high-throughput sub-diffraction imaging.
abstract: Overcoming the resolution limit of conventional optics is regarded as the most important issue in optical imaging science and technology. Although hyperlenses, super-resolution imaging devices based on highly anisotropic dispersion relations that allow the access of high-wavevector components, have recently achieved far-field sub-diffraction imaging in real-time, the previously demonstrated devices have suffered from the extreme difficulties of both the fabrication process and the non-artificial objects placement. This results in restrictions on the practical applications of the hyperlens devices. While implementing large-scale hyperlens arrays in conventional microscopy is desirable to solve such issues, it has not been feasible to fabricate such large-scale hyperlens array with the previously used nanofabrication methods. Here, we suggest a scalable and reliable fabrication process of a large-scale hyperlens device based on direct pattern transfer techniques. We fabricate a 5 cm × 5 cm size hyperlenses array and experimentally demonstrate that it can resolve sub-diffraction features down to 160 nm under 410 nm wavelength visible light. The array-based hyperlens device will provide a simple solution for much more practical far-field and real-time super-resolution imaging which can be widely used in optics, biology, medical science, nanotechnology and other closely related interdisciplinary fields.
authors.affiliation: Department of Materials Science and Engineering, Korea University, Seoul 02842, Republic of Korea.
authors.forename: Minseop
authors.initials: M
authors.lastname: Byun
authors.affiliation: Department of Mechanical Engineering, Pohang University of Science and Technology (POSTECH), Pohang 36763, Republic of Korea.
authors.forename: Dasol
authors.initials: D
authors.lastname: Lee
authors.affiliation: Department of Mechanical Engineering, Pohang University of Science and Technology (POSTECH), Pohang 36763, Republic of Korea.
authors.forename: Minkyung
authors.initials: M
authors.lastname: Kim
authors.affiliation: Department of Materials Science and Engineering, Korea University, Seoul 02842, Republic of Korea.
authors.forename: Yangdoo
authors.initials: Y
authors.lastname: Kim
authors.affiliation: Department of Materials Science and Engineering, Korea University, Seoul 02842, Republic of Korea.
authors.forename: Kwan
authors.initials: K
authors.lastname: Kim
authors.affiliation: Department of Mechanical and Automotive Engineering, Seoul National University of Science and Technology, Seoul 01811, Republic of Korea.
authors.forename: Jong G
authors.initials: JG
authors.lastname: Ok
authors.affiliation: Department of Mechanical Engineering, Pohang University of Science and Technology (POSTECH), Pohang 36763, Republic of Korea.|Department of Chemical Engineering, Pohang University of Science and Technology (POSTECH), Pohang 36763, Republic of Korea.|National Institute of Nanomaterials Technology (NINT), Pohang 37676, Republic of Korea.
authors.forename: Junsuk
authors.initials: J
authors.lastname: Rho
authors.affiliation: Department of Materials Science and Engineering, Korea University, Seoul 02842, Republic of Korea.
authors.forename: Heon
authors.initials: H
authors.lastname: Lee