Abstract
Hexagonal arrays of nanoscale holes or metal dots (25 nm in diameter and 39 nm in period), with orientational order extending over the entire square-centimeter array area, were fabricated on unpatterned silicon wafer substrates using a shear-aligned sphere-forming diblock copolymer template. Since two or more layers of spherical nanodomains are required to achieve alignment in the block copolymer film, but pattern transfer requires a single layer, a multistep etching process was developed, whereby the top layer of a shear-aligned bilayer was evenly removed, leaving the ordered bottom layer as the fabrication template for hole and dot arrays free from grain boundaries.
| Original language | English (US) |
|---|---|
| Article number | 143110 |
| Journal | Applied Physics Letters |
| Volume | 91 |
| Issue number | 14 |
| DOIs | |
| State | Published - 2007 |
All Science Journal Classification (ASJC) codes
- Physics and Astronomy (miscellaneous)