Surface tension-induced high aspect-ratio PDMS micropillars with concave and convex lens tips
Type
Conference PaperKAUST Department
Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) DivisionElectromechanical Microsystems & Polymer Integration Research Lab (EMPIRe)
Electrical Engineering Program
Date
2013-04Permanent link to this record
http://hdl.handle.net/10754/564703
Metadata
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This paper reports a novel method for the fabrication of 3-dimensional (3D) Polydimethylsiloxane (PDMS) micropillars with concave and convex lens tips in a one-step molding process, using a CO2 laser-machined Poly(methyl methacrylate) (PMMA) mold with through holes. The PDMS micropillars are 4 mm high and have an aspect ratio of 251. The micropillars are formed by capillary force drawing up PDMS into the through hole mold. The concave and convex lens tips of the PDMS cylindrical micropillars are induced by surface tension and are controllable by changing the surface wetting properties of the through holes in the PMMA mold. This technique eliminates the requirements of expensive and complicated facilities to prepare a 3D mold, and it provides a simple and rapid method to fabricate 3D PDMS micropillars with controllable dimensions and tip shapes. © 2013 IEEE.Citation
Huawei Li, Yiqiang Fan, Ying Yi, & Foulds, I. G. (2013). Surface tension-induced high aspect-ratio PDMS micropillars with concave and convex lens tips. The 8th Annual IEEE International Conference on Nano/Micro Engineered and Molecular Systems. doi:10.1109/nems.2013.6559711Conference/Event name
8th Annual IEEE International Conference on Nano/Micro Engineered and Molecular Systems, IEEE NEMS 2013ISBN
9781467363525ae974a485f413a2113503eed53cd6c53
10.1109/NEMS.2013.6559711