Figure 4: Tunability of magnetoceptive materials.
From: Guided and magnetic self-assembly of tunable magnetoceptive gels
(a,b) Rod assemblies composed of PEGDMA and GelMA hydrogels. (c) Tetris-like assembly of PEGDMA. (d) Square assembly of GelMA. (e) Flower-like assembly of PEGDMA. (f–h) Hexagonal assembly of PEGDMA hydrogels. (i–k) More complex assemblies of PEGDMA hydrogels. (l–n) Heterogeneous assemblies consisting of both PEGDMA and GelMA. (o–q) Heterogeneous porous assemblies consisting of sucrose leached macroporous and nanoporous PEGDMA gels. (r–t) Assemblies with heterogeneity in mass density (glass bubble encapsulating light PEGDMA gels and heavier PEGDMA gels together). (u) Assembly and patterning setup with a penny. Each well is a reservoir for differently coloured hydrogels with different shapes. (v) 3D schematic of tetris patterning chamber. (w) Snapshots from tetris assembly at three time points (left to right). (x) 3D heterogeneous gel composed of three layers of macroporous (x-shape) and nanoporous (o-shape) 50% PEGDMA gels. From top view, gel cross-section is 5mm × 5mm. (y) Youngs Modulus, Ultimate Stress, and Ultimate Strain for normal and macroporous gels. Error bars represent s.e.m. (z) Compressive stress as a function of compressive strain for normal (solid), macroporous (dashed) and composite gels (dotted). PEGDMA is abbreviated as PEG in the figure labels. Scale bar is 1 mm.
