title: Motion-induced radiation from electrons moving in Maxwell's fish-eye.
abstract: In Čerenkov radiation and transition radiation, evanescent wave from motion of charged particles transfers into radiation coherently. However, such dissipative motion-induced radiations require particles to move faster than light in medium or to encounter velocity transition to pump energy. Inspired by a method to detect cloak by observing radiation of a fast-moving electron bunch going through it by Zhang et al., we study the generation of electron-induced radiation from electrons' interaction with Maxwell's fish-eye sphere. Our calculation shows that the radiation is due to a combination of Čerenkov radiation and transition radiation, which may pave the way to investigate new schemes of transferring evanescent wave to radiation.
authors.affiliation: Computational Nano-Electronics Laboratory, Division of Micro-Electronics, School of Electrical and Electronic Engineering, 50 Nanyang Avenue, Nanyang Technological University, Singapore 639798.
authors.forename: Yangjie
authors.initials: Y
authors.lastname: Liu
authors.forename: L K
authors.initials: LK
authors.lastname: Ang