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Ambipolar transistors based on azurin proteins

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7 Author(s)
S. D'Amico ; Nat. Nanotechnology Lab. of INFM, Univ. of Lecce, Italy ; G. Maruccio ; P. Visconti ; E. D'Amone
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A new type of transistor is presented. It is realised by using a metalloprotein; namely, azurin. Thanks to their natural functional characteristics, which involve inter- and intramolecular electron transfer, metalloproteins are good candidates for biomolecular nanoelectronics. The implementation of a prototype of protein transistor operating in air and in the solid state based on self-organised films of azurins is reported. Experimental current-voltage characteristics are shown. The new device presents an ambipolar behaviour as the gate bias voltage is changed. Exploiting this peculiar characteristic, a fully integrated logic gate which can be a good starting point for a new class of nanoelectronics devices has been realised.

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IEE Proceedings - Nanobiotechnology  (Volume:151 ,  Issue: 5 )