Elastocapillary fabrication of three-dimensional microstructures


Honschoten, J.W. van and Berenschot, J.W. and Ondarcuhu, T. and Sanders, R.G.P. and Sundaram, J. and Elwenspoek, M. and Tas, N.R. (2010) Elastocapillary fabrication of three-dimensional microstructures. Applied Physics Letters, 97 . 014103-1-014103-3. ISSN 0003-6951

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Abstract:We describe the fabrication of three-dimensional microstructures by means of capillary forces. Using an origami-like technique, planar silicon nitride structures of various geometries are folded to produce three-dimensional objects of 50–100 m. Capillarity is a particularly effective mechanism since surface tension forces dominate over bulk forces at small scales. The spontaneous evaporation of water forms the driving mechanism for this microfabrication technique. Therefore the actuating liquid disappears in the final structure. A model describing the elastocapillary interaction of the folding process is compared with experiments. By tailoring the elastic and capillary properties a variety of three-dimensional micro-objects can be realized.
Item Type:Article
Copyright:© 2010 American Institute of Physics
Electrical Engineering, Mathematics and Computer Science (EEMCS)
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Link to this item:http://purl.utwente.nl/publications/73472
Official URL:http://dx.doi.org/10.1063/1.3462302
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