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Three-dimensional SU-8 microtiles for fluidic self-assembly

par Mastrangeli, Massimo ;Martinoli, Alcherio;Brugger, Juergen
Référence MNE 2013(16-19 September 2013: London (UK)), 39th International Conference on Micro and Nano Engineering (MNE 2013)
Publication Publié, 2013

Abstract de conférence

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Résumé :

We present an innovative design and fabrication process for three-dimensional polymeric microtiles. Our 200 µm-sized tiles are passive vehicles designed to investigate SA in a microfluidic chamber, as an extension of our centimeter scale studies [5]. They are conceived by superposing two structural layers with inverted chiral patterns and fourfold in-plane symmetry (Fig. 1a). The tiles interact laterally, either at a liquid/liquid interface or in bulk liquid (Fig. 2). The design makes the tiles available for coordination independently of their vertical orientation, unlike e.g. [4]. They also feature a central marker for optical tracking and control (Fig. 1b). The microtiles—with overhanging and straight walls needed for intimatecontact—cannot evidently be fabricated by microstereolithography or by simple lithographical patterning.