A method creates pillar structures on a semiconductor wafer and includes the steps of providing a layer of semiconductor. A layer of photoresist is applied over the layer of semiconductor. The layer of photoresist is exposed with an initial pattern of light to effect the layer of photoresist. The photoresist layer is then etched away to provide a photoresist pattern to create the pillar structures. The photoresist pattern is processed in the layer of photoresist after the step of exposing the layer of photoresist and prior to the step of etching to reduce the dimensions of the photoresist pattern in the layer of photoresist.