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. Author manuscript; available in PMC: 2015 Apr 30.
Published in final edited form as: Biomed Microdevices. 2014 Aug;16(4):609–615. doi: 10.1007/s10544-014-9863-3

Fig. 1.

Fig. 1

Fabrication of microbead templates by self-assembly. a Glass beads were treated with dimethyldichlorosilane to become hydrophobic. b Treated glass beads were deposited onto 5 % polyvinylalchohol (PVA) solution, and self-assembled into a monolayer by the combined act of gravity, surface tension, and lateral capillary force. c The PVA solution was air-dried and the glass beads were consequently embedded in the solidified PVA layer, which was then used as a template to form spherical cavities in the molding material (PDMS). d Images of glass bead templates of various diameters embedded in PVA film after drying (in 35 mm petri dishes)