Customization of Poly(dimethylsiloxane) Stamps by Micromachining Using a Femtosecond‐Pulsed Laser

Abstract

A femtosecond‐pulsed Ti:sapphire laser is used to generate surface features in slabs of poly(dimethylsiloxane) with minimum dimensions of 1 μm—smaller than those available by rapid‐prototyping techniques using transparency masks. The fabrication of magnetic field concentrators and the addition of custom features to a generic microfluidic channel (see Figure) demonstrate the utility of the technique.