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Light induced patterning of poly(dimethylsiloxane) microstructures

  Articoli su Riviste JCR/ISI  (anno 2010)

Autori:  Miccio L., Paturzo M., Finizio A., Ferraro P

Affiliazione Autori:  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

Riassunto:  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

Rivista/Giornale:  OPTICS EXPRESS
Volume n.:  18 (11)      Pagine da: 10947  a: 10955
Ulteriori informazioni:  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.18.010947

*Impact Factor della Rivista: (2010) 3.753   *Citazioni: 20
data tratti da "WEB OF SCIENCE" (marchio registrato di Thomson Reuters) ed aggiornati a:  19/05/2019

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