Abstract
These days, angled pillar arrays have received much attention due to their directional physical properties and potential applications for dry adhesives or microfluidic devices. Among many fabrication methods, a strategy of Janus-faced nanopillars has been developed for bending pillars in one direction. Janus nanopillars consist of ultraviolet-cured polymeric nanopillars partially coated by metal films. Especially, Janus nanopillars can be bent during metal coating on one side of polymeric pillars because of the residual stress in metal films. In this work, we investigate the shape modulation in deformation of Janus nanopillars during aluminum deposition. The bending angles are controlled by the rate of metal deposition and the curing time of polymeric pillars. Furthermore, we can modulate the deformed shape by adjusting coating region in oblique metal deposition.
| Original language | English |
|---|---|
| Pages (from-to) | 2474-2477 |
| Number of pages | 4 |
| Journal | Science of Advanced Materials |
| Volume | 6 |
| Issue number | 11 |
| DOIs | |
| State | Published - 2014 |
Keywords
- Curing time
- Janus nanopillars
- Oblique angle
- Oblique deposition
- Polymer