Skip to main content
. Author manuscript; available in PMC: 2008 Sep 18.
Published in final edited form as: Chem Mater. 2007;19(6):1362–1368. doi: 10.1021/cm062626f

Figure 3.

Figure 3

The self-assembly of the paramagnetic hydrogel spheres using different geometries and configurations of NdFeB magnets. Schematic drawings on the right illustrate the polarity of the magnets. The spheres collect over the region of highest magnetic field. A) Carboxymethyl cellulose spheres assembled into an open lattice structure of small magnetic posts. B) Spheres of ι-carrageenan assembled into lines over the intersection between two adjacent magnets with opposite polarity. The magnets were immersed in the solution containing the spheres. C) AA spheres aligned with a set of ring magnets only in the region directly above each magnet. In this geometry, there is essentially zero magnetic field in the center of each ring and in the center of the cluster of rings.