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. Author manuscript; available in PMC: 2011 Nov 1.
Published in final edited form as: Biomaterials. 2010 Aug 16;31(33):8810–8817. doi: 10.1016/j.biomaterials.2010.07.087

Figure 5.

Figure 5

Microstructures from magnetic photoresists. Brightfield image of 3 μm circular structures composed of SU8 with 1% maghemite nanoparticles (A). SEM images of rectangular structures formed from 1002F photoresist containing 1% maghemite nanoparticles (B) and cylindrical structures formed from SU-8 photoresist containing 1% maghemite nanoparticles (C). The microstructures in B and C were fabricated from masks with 3 μm-sized openings and film heights of 12 μm. Insert shows an expanded view of a single rectangular structure (scale bar is 5 μm). Brightfield image of an array prior to laser-based release of a pallet (D). The pallets were 100×100×30 μm3 in size and composed of 1002F with 1% maghemite nanoparticles. At the array surface the magnetic field was 502 mT. (E) Image of the same array after pallet release. The objective focal plane is located at in the plane of the array. (F) Image of the released pallet. The objective focal plane is located on the glass slide 0.5 mm above the array.