Liquid micro-lens array activated by selective electrowetting on lithium niobate substrates.
Lens effect was obtained in an open microfluidic system by using a thin layer of liquid on a polar electric crystal like LiNbO3. An array of liquid micro-lenses was generated by electrowetting effect in pyroelectric periodically poled crystals. Compared to conventional electrowetting devices, the pyroelectric effect allowed to have an electrode-less and circuit-less configuration. An interferometric technique was used to characterize the curvature of the micro-lenses and the corresponding results are presented and discussed. The preliminary results concerning the imaging capability of the micro-lens array are also reported.
Istituto Nazionale di Ottica Applicata (CNR-INOA), Pozzuoli, Italy. simonetta.grilli@inoa.it
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Grilli
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Miccio
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Vespini
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Finizio
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De Nicola
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Ferraro
D003198:Computer Simulation; D017076:Computer-Aided Design; D004574:Electromagnetic Fields; D004581:Electronics / Q000295:instrumentation*; D004867:Equipment Design; D019544:Equipment Failure Analysis; D007909:Lenses; D008962:Models, Theoretical; D009556:Niobium / Q000737:chemistry* / Q000528:radiation effects; D010087:Oxides / Q000737:chemistry* / Q000528:radiation effects; D012996:Solutions
D010087:Oxides; D012996:Solutions; D009556:Niobium; C091692:lithium niobate