PDMS掩模

Abstract(#br)Micro-dimple arrays play an important role in improving the performance and reliability of mechanical systems, and micro-dimples on the surfaces of piston rings and sliding bearings may reduce friction. Although many methods can be employed to create micro-dimples on cylindrical surfaces, it is still a challenge to generate micro-dimple arrays on cylindrical surfaces with high efficiency and low cost.

Graphical abstractSEM images of the micro-dimple arrays generated with PDMS mask. [Display omitted] ;Highlights•It is difficult to generate micro-dimple arrays with PDMS mask in hydrostatic mode.•Micro-dimple arrays with poor uniformity were obtained in lateral flow mode.•The forward flow mode was modified with multi-slits structure cathode.•With the modified mode, micro-dimple arrays could be generated uniformly.;AbstractMicro-dimple arrays on the surfaces of engineering parts play an important role in the behaviour of these parts.