Tao, S. H. Yuan, X-C. Lin, J. Peng, X. Niu, H. B. Media 3: Fractional optical vortex beam induced rotation of particles Originally published in Optics Express on 03 October 2005 (oe-13-20-7726) media;oe;Optics Express;03 October 2005;Fractional;vortex beam;rotation 2005-10-03
    https://opticapublishing.figshare.com/articles/media/Media_3_Fractional_optical_vortex_beam_induced_rotation_of_particles/4933481
10.1364/OPEX.13.007726.m003