Design and Electrochemical Fabrication of Gold Binary Ordered Micro/Nanostructured Porous Arrays via Step-by-Step Colloidal Lithography

Colloidal lithography is a low-cost, high-throughput, facile nanofabrication technique capable of producing a large variety of nanostructured arrays. In this letter, we report a methodology, named step-by-step colloidal lithography, using electrochemical deposition as a fabrication technique to sculpture various hexagonally packed 2D-ordered gold binary micro/nanostructured porous arrays. By the designed fabrication routes, the structures of arrays and the morphology of the building blocks in the arrays can be easily controlled. Because of the feature of step-by-step fabrication, such a strategy will provide a versatile methodology not only for unitary components but also for binary and even multiplex materials, leading to heterostructured arrays with controlled compositions and block sizes. Such morphology and structure-controlled 2D binary porous arrays will exhibit the importance in building micro/nanostructured devices.