Template fabrication of 3D metallic microstructures by electrochemical etching and electroplanting

In this work, we show that macroporous silicon consisting of periodic arrays of etched pores is a feasible alternative for synthesis of 2D and 3d metallic microstructures due to its flexibility in the definition of complex geometries bulk. In addition macroporous silicon features full three-dimensionality, well controlled pore distribution and growth, and scalable dimensions (0.5-100 μm). We present here the fabrication of 3D Ni micro-structures by electroplating of macroporous silicon templates. The given approach can be applied for depositions of different metals and in more complicated template-structures.