title: Tailoring repulsive optical forces in nanophotonic waveguides.
abstract: We describe a mechanism and propose design strategies to selectively tailor repulsive-gradient-optical forces between parallel, nanophotonic waveguides via morphology augmented by slow-light band-edge modes. We show that at small separation lengths, the repulsive force can be made nearly 2 orders of magnitude larger than that of standard dielectric waveguides with a square cross section. The increased coupling interactions should enable a wider dynamic range of optomechanical functionality for potential applications in sensing, switching, and nanoelectromechanical systems.
authors.affiliation: Department of Electronic Science & Engineering, Kyoto University, Kyoto 615-8510, Japan. oskooi@qoe.kuee.kyoto‐u.ac.jp
authors.forename: Ardavan
authors.initials: A
authors.lastname: Oskooi
authors.forename: Pedro A
authors.initials: PA
authors.lastname: Favuzzi
authors.forename: Yoichi
authors.initials: Y
authors.lastname: Kawakami
authors.forename: Susumu
authors.initials: S
authors.lastname: Noda