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Opt Express. 2008 May 26;16(11):8084-93.

Liquid micro-lens array activated by selective electrowetting on lithium niobate substrates.

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Istituto Nazionale di Ottica Applicata (CNR-INOA), Pozzuoli, Italy.


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.

[Indexed for MEDLINE]

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