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http://hdl.handle.net/2067/42765
Title: | Electron tunnelling through single azurin molecules can be on/off switched by voltage pulses | Authors: | Baldacchini, Chiara Kumar, Vivek Bizzarri, Anna Rita Cannistraro, Salvatore |
Journal: | APPLIED PHYSICS LETTERS | Issue Date: | 2015 | Abstract: | Redox metalloproteins are emerging as promising candidates for future bio-optoelectronic and nano-biomemory devices, and the control of their electron transfer properties through external signals is still a crucial task. Here, we show that a reversible on/off switching of the electron current tunnelling through a single protein can be achieved in azurin protein molecules adsorbed on gold surfaces, by applying appropriate voltage pulses through a scanning tunnelling microscope tip. The observed changes in the hybrid system tunnelling properties are discussed in terms of long-sustained charging of the protein milieu. |
URI: | http://hdl.handle.net/2067/42765 | ISSN: | 1077-3118 | DOI: | 10.1063/1.4919911 |
Appears in Collections: | A1. Articolo in rivista |
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