Anisotropic dewetting polydimethylsiloxane surface fabricated us...

Anisotropic dewetting polydimethylsiloxane (PDMS) surfaces, which consist of groove-like micro/nanostructures (so-called hierarchical structures), are fabricated using an ultrashort pulsed laser. The contact angles (CAs) are measured parallel to the microgrooves, which are always larger than those measured perpendicular to the microgrooves, exhibiting a superhydrophobic anisotropy of approximately 4o on these fabricated PDMS surfaces at optimized parameters. These pulsed-laser irradiated surface