title: Integrated optical devices based on broadband epsilon-near-zero meta-atoms.
abstract: We verify the feasibility of the proposed theoretical strategy for designing the broadband near-zero permittivity (ENZ) metamaterial at optical frequency range with numerical simulations. In addition, the designed broadband ENZ stack is used as meta-atoms to build functional nanophotonic devices with extraordinary properties, including an ultranarrow electromagnetic energy tunneling channel and an ENZ concave focusing lens.
authors.affiliation: Department of Mechanical and Aerospace Engineering, Missouri University of Science and Technology, Rolla, Missouri 65409, USA.
authors.forename: Lei
authors.initials: L
authors.lastname: Sun
authors.forename: Kin Wah
authors.initials: KW
authors.lastname: Yu
authors.forename: Xiaodong
authors.initials: X
authors.lastname: Yang