Abstract
A two-step masking technique has been developed to prepare large-scale triangular latticearrays of uniform sub-micron islands on substrates at room temperature and at low cost byutilizing self-assembly of polystyrene microspheres. As an example, fabrication of largearrays of nickel islands with long-range periodicity and morphological uniformity isdemonstrated, which is also ready to apply to fabricate periodic sub-micron islands of othermaterials on flat substrates in general. The islands so prepared resemble the shape of ahexagonal disc with its size determined by the size of the polystyrene spheres and itsthickness variable in a wide range. These islands of various materials on different kindsof substrates can be used in a variety of applications such as catalysts to growaligned carbon nanotubes and nanowires for 2D photonic crystals, nanoelectrodearrays for molecular devices, nanostructure building blocks for nanofabrications,etc.
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