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 better anchoring on a hydrophobic silicon surface, overcoming the hydrophilic melanin-hydrophobic silicon interface criticism. 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 let to foresee a possible exploiting of this circuital element for bio and environmental molecules sensing.

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

LIGONZO, Teresa;FAVIA, Pietro;FARINOLA, Gianluca Maria
2014-01-01

Abstract

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 better anchoring on a hydrophobic silicon surface, overcoming the hydrophilic melanin-hydrophobic silicon interface criticism. 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 let to foresee a possible exploiting of this circuital element for bio and environmental molecules sensing.
File in questo prodotto:
Non ci sono file associati a questo prodotto.

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11586/129501
 Attenzione

Attenzione! I dati visualizzati non sono stati sottoposti a validazione da parte dell'ateneo

Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 14
  • ???jsp.display-item.citation.isi??? 14
social impact