“…Making 1D nanoscopic structures especially with asymmetry, inspired by Mother Nature, is still a great challenge to overcome, although 1D nanomaterials such as asymmetric high-aspect-ratio polymer nanopillars have received considerable attention because of their wide potential applications including Gecko-mimicking dry adhesives, microfluidics, , water delivery, unidirectional wetting, , nanotemplates, − piezoelectric nanogenerators, , and micromechanical sensors. , Nanopillars are generally fabricated by photolithography, e-beam lithography, and soft lithography . Unfortunately, each of these techniques has their inherent bottlenecks for productivity.…”