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Keywords:

  • ellipsoidal colloids;
  • magnetic microparticles;
  • MRI contrast agents;
  • nanofabrication
Thumbnail image of graphical abstract

A simple new approach for transforming micro- and nanoscale spheres into eccentric ellipsoids and for generating hollow ellipsoidal shell particles is demonstrated based on a rotating, angled, evaporative deposition process. The resulting ellipsoidal shells possess unique electromagnetic field properties that enable a new form of multispectral labeling agent for magnetic resonance imaging applications.