Supertubes

It is shown that a IIA superstring carrying D0-brane charge can be blown-up', in a {\it Minkowski vacuum} background, to a (1/4)-supersymmetric tubular D2-brane, supported against collapse by the angular momentum generated by crossed electric and magnetic Born-Infeld fields. This supertube’ can be viewed as a worldvolume realization of the sigma-model Q-lump.