Melanin-like polymer layered on a nanotextured silicon surface for a hybrid biomimetic interface

作者：Ambrico Marianna^*; Ambrico Paolo F; Cardone Antonio; Cicco Stefania R; Palumbo Fabio; Ligonzo Teresa; Di Mundo Rosa; Petta Viviana; Augelli Vincenzo; Favia Piero; Farinola Gianluca M

来源：Journal of Materials Chemistry C, 2014, 2(3): 573-582.

DOI：10.1039/c3tc31327a

The electrical transport across a biomimetic interface made up of spin coated melanin layers on nanotextured silicon surfaces with different texturing features and wetting properties is discussed. Nanotexturing allows, under certain conditions, the melanin to anchor better on a hydrophobic silicon surface, overcoming the hydrophilic melanin-hydrophobic silicon interface issue. The feature of the electrical signal transduction across such a structure was studied by impedance spectroscopy and found to be influenced by the nano-texturing chemistry and surface morphology. The effects of a voltage pulse, as external stimulus modifying the electrical transport mechanisms, and retention of the subsequently achieved carrier transport conditions have been elucidated. The results suggest a possible exploiting of this circuit element for bio and environmental molecules' sensing.

• 出版日期2014