Advanced Materials

Residual Layer Self-Removal in Imprint Lithography


  • The authors would like to acknowledge financial support from the Institute of Materials Research & Engineering (IMRE), Singapore.


A new method for imprinting residual-layer free polymer micro- and nano structures, particularly 3-D structures with overhang, is demonstrated. This simple and versatile method induces self-removal of the residual layer by controlled failure of the patterned film along the edges of the imprinted features. Pristine overhang structures down to ∼500 nm diameter are realized without exposure to plasma or chemical etchants.

original image