Simulation of Re-Entrant Structures Fabricated by Electrochemical Deposition

Re-entrant structures with controllable geometric parameters are significant in fundamental research of superoleophobicity. However, fabrication of micro re-entrant structures on metal substrate is not effective using existing methods. Herein, a new method was proposed to fabricate micro re-entrant structures on metal substrates by electrochemical deposition. Numerical simulations were conducted to investigate the influence of the electric field distribution on the shape and size of the deposited structures during the deposition process. The relationship between the diameter of overhang structure and deposition time was also investigated. This study will provide a guideline for the fabrication of the superphobicity micro re-entrant structures on metal substrate.