@patent{Nguyen21-PATENT-Halbach,
  title = {An electric machine with two-phase planar Lorentz coils and a ring-shaped Halbach array for high torque density and high-precision applications},
  abstract = {An electric machine, in particular a motor or a generator, comprising a rotor and a stator, wherein the rotor comprises a planar, ring-shaped rotor base element and the stator comprises a planar ring-shaped stator base element, wherein the rotor base element and the stator base element are aligned along an axial axis (Z) of the electric machine, wherein a plurality of magnet elements are arranged around the circumference of the ring-shaped rotor base element forming a Halbach magnet-ring assembly, wherein the Halbach magnet-ring assembly generates a magnetic field (BR) with axial and azimuthal components, wherein a plurality of coils are arranged around the circumference (C) of the ring-shaped stator base element.},
  number = {EP21170679.1},
  month = apr,
  year = {2021},
  slug = {nguyen21-patent-halbach},
  author = {Nguyen, Vu and Javot, Bernard and Kuchenbecker, Katherine J.},
  month_numeric = {4}
}