Dynamics of microparticles trapped in a perfect vortex beam Chen, Mingzhou ; Mazilu, Michael ; Arita, Yoshihiko ; Wright, Ewan M. ; Dholakia, Kishan Abstract Publication: Optics Letters Pub Date: November 2013 DOI: 10.1364/OL.38.004919 Bibcode: 2013OptL...38.4919C