title: Alignment-free three-dimensional optical metamaterials.
abstract: Three-dimensional optical metamaterials based on multilayers typically rely on critical vertical alignment to achieve the desired functionality. Here the conditions under which three-dimensional metamaterials with different functionalities may be realized without constraints on alignment are analyzed and demonstrated experimentally. This study demonstrates that the release of alignment constraints for multilayered metamaterials is allowed, while their anomalous interaction with light is preserved.
authors.affiliation: Department of Electrical and Computer Engineering, The University of Texas at Austin, Austin, TX, 78712, USA.
authors.forename: Yang
authors.initials: Y
authors.lastname: Zhao
authors.forename: Jinwei
authors.initials: J
authors.lastname: Shi
authors.forename: Liuyang
authors.initials: L
authors.lastname: Sun
authors.forename: Xiaoqin
authors.initials: X
authors.lastname: Li
authors.forename: Andrea
authors.initials: A
authors.lastname: Alù
keywords: metamaterials; nanofabrication; plasmonics; shift-invariant; stretchable