Light induced patterning of poly(dimethylsiloxane) microstructures
Authors: Miccio L., Paturzo M., Finizio A., Ferraro P.
Autors Affiliation: Istituto Nazionale di Ottica del CNR (INO-CNR)Via Campi Flegrei, 34 – 80078 – Pozzuoli (Na) Italy; Istituto di Cibernetica “E Caianiello” Via Campi Flegrei, 34 – 80078 – Pozzuoli (Na) Italy
Abstract: A new method for direct patterning of Poly(dimethylsiloxane) (PDMS) microstructures is developed by taking advantage of photorefractive effect in a functionalized substrate. Here we show that when a x-cut Iron doped Lithium Niobate (LN) crystal is exposed to appropriate structured laser light, a charge density pattern builds-up in the crystal and a space charge field arise that is able to induce self-patterning of the PDMS liquid film deposited on its surface via the dielectrophoretic effects. Proper heating treatment allows to achieve polymeric linking process creating a solid and stable PDMS microstructures. The self-patterned structures replicate the illuminating light pattern. We show that 1D and 2D patterning of PDMS gratings can be achieved. This new soft-lithographic approach can pave the way for realizing PDMS micro-structures with high degree of flexibility that avoids the need of moulds fabrication. (C) 2010 Optical Society of America
Journal/Review: OPTICS EXPRESS
Volume: 18 (11) Pages from: 10947 to: 10955
More Information: This work is supported by \”Intesa di programma MIUR/CNR per il Mezzogiorno\”. Authors would like to thank Prof. Eusebio Bernabeu and Prof. Luis Miguel Sanchez, \”Universidad Complutense – Departamento de Optica\” of Madrid, for helpful discussions and suggestions and for the performing confocal microscope measurements.DOI: 10.1364/OE.18.010947Citations: 21data from “WEB OF SCIENCE” (of Thomson Reuters) are update at: 2020-02-23References taken from IsiWeb of Knowledge: (subscribers only)Connecting to view paper tab on IsiWeb: Click hereConnecting to view citations from IsiWeb: Click here