Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Microfabrication With Very Low-Average Power of Green Light to Produce PDMS Microchips

Version 1 : Received: 23 December 2020 / Approved: 24 December 2020 / Online: 24 December 2020 (14:06:22 CET)

How to cite: Hernandez -Cedillo, L.M.; Vázquez-Cuevas, F.G.; Quintero-Torres, R.; Aragón, J.L.; Ocampo Mortera, M.A.; Ordóñez-Romero, C.L.; Domínguez-Juárez, J.L. Microfabrication With Very Low-Average Power of Green Light to Produce PDMS Microchips. Preprints 2020, 2020120630 (doi: 10.20944/preprints202012.0630.v1). Hernandez -Cedillo, L.M.; Vázquez-Cuevas, F.G.; Quintero-Torres, R.; Aragón, J.L.; Ocampo Mortera, M.A.; Ordóñez-Romero, C.L.; Domínguez-Juárez, J.L. Microfabrication With Very Low-Average Power of Green Light to Produce PDMS Microchips. Preprints 2020, 2020120630 (doi: 10.20944/preprints202012.0630.v1).

Abstract

In this letter, we show an alternative low-cost fabrication method to obtain poly(dimethyl siloxane) (PDMS) microfluidic devices. The proposed method allows the inscription of micron resolution channels on polystyrene (PS) surfaces, used as a mold for the wanted microchip’s production, by applying a high absorption coating film on the PS surface to ablate it with a focused low-power visible laser. The method allows obtaining micro resolution channels at powers between 2 and 10mW and can realize any two-dimensional polymeric devices. The effect of the main processing parameters on the channel’s geometry is presented.

Subject Areas

Microfabrication; polymeric microchip; laser ablation; PDMS devices; low-cost fabrication tool.

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