http://www.cnr.it/ontology/cnr/individuo/prodotto/ID307661

Water-mediated electrochemical nano-writing on thin ceria films (Articolo in rivista)

Type

Label

Water-mediated electrochemical nano-writing on thin ceria films (Articolo in rivista) (literal)

Anno

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Alternative label

Yang, Nan; Doria, Sandra; Kumar, Amit; Jang, Jae Hyuck; Arruda, Thomas M.; Tebano, Antonello; Jesse, Stephen; Ivanov, Ilia N.; Baddorf, Arthur P.; Strelcov, Evgheni; Licoccia, Silvia; Borisevich, Albina Y.; Balestrino, Giuseppe; Kalinin, Sergei V. (2014)
Water-mediated electrochemical nano-writing on thin ceria films
in Nanotechnology (Bristol. Print)
(literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori

Yang, Nan; Doria, Sandra; Kumar, Amit; Jang, Jae Hyuck; Arruda, Thomas M.; Tebano, Antonello; Jesse, Stephen; Ivanov, Ilia N.; Baddorf, Arthur P.; Strelcov, Evgheni; Licoccia, Silvia; Borisevich, Albina Y.; Balestrino, Giuseppe; Kalinin, Sergei V. (literal)

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Rivista

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Note

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University of Rome Tor Vergata; University of Rome Tor Vergata; University of Rome Tor Vergata; Center for Nanophase Materials Sciences; Oak Ridge National Laboratory; University of Rome Tor Vergata (literal)

Titolo

Abstract

Bias dependent mechanisms of irreversible cathodic and anodic processes on a pure CeO2 film are studied using modified atomic force microscopy (AFM). For a moderate positive bias applied to the AFM tip an irreversible electrochemical reduction reaction is found, associated with significant local volume expansion. By changing the experimental conditions we are able to deduce the possible role of water in this process. Simultaneous detection of tip height and current allows the onset of conductivity and the electrochemical charge transfer process to be separated, further elucidating the reaction mechanism. The standard anodic/cathodic behavior is recovered in the high bias regime, where a sizable transport current flows between the tip and the film. These studies give insight into the mechanisms of the tip-induced electrochemical reactions as mediated by electronic currents, and into the role of water in these processes, as well as providing a different approach for electrochemical nano-writing. (literal)

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