Role of semiconductivity and ion transport in the electrical conduction of melanin.

  title={Role of semiconductivity and ion transport in the electrical conduction of melanin.},
  author={A Bernardus Mostert and Benjamin J Powell and Francis L Pratt and Graeme R. Hanson and Tadeusz Jan Sarna and Ian R Gentle and Paul Meredith},
  journal={Proceedings of the National Academy of Sciences of the United States of America},
  volume={109 23},
Melanins are pigmentary macromolecules found throughout the biosphere that, in the 1970s, were discovered to conduct electricity and display bistable switching. Since then, it has been widely believed that melanins are naturally occurring amorphous organic semiconductors. Here, we report electrical conductivity, muon spin relaxation, and electron paramagnetic resonance measurements of melanin as the environmental humidity is varied. We show that hydration of melanin shifts the… CONTINUE READING
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On the origin of the electrical conductivity in the bio-electronic material melanin

  • AB Mostert, BJ Powell, IR Gentle, P Meredith
  • App Phys Lett 100:093701
  • 2012

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