Bioelectronics: In Situ Formation of Dendrites in Eumelanin Thin Films between Gold Electrodes (Adv. Funct. Mater. 45/2013). (5th December 2013)

• Record Type: Journal Article
• Authors: Wünsche, Julia; Cardenas, Luis; Rosei, Federico; Cicoira, Fabio; Gauvin, Reynald; Graeff, Carlos F. O.; Poulin, Suzie; Pezzella, Alessandro; Santato, Clara
• Is Part Of: Advanced functional materials. Volume 23:Number 45(2013)
• Page Start: 5569
• Page End: 5569
• Publication Date: 2013-12-05
• Subjects: Materials -- Periodicals; Chemical vapor deposition -- Periodicals; 620.11
• DOI: 10.1002/adfm.201370229
• Languages: English
• ISSNs: 1616-301X

Abstract

<abstract abstract-type="graphical" xml:lang="en"> <title> <x xml:space="preserve">Abstract</x> </title> <p> <ext-link ext-link-type="doi" xlink:type="simple" xmlns:xlink="http://www.w3.org/1999/xlink">On page 5591</ext-link>, hydrated thin films of the biomolecule eumelanin are contacted with Au electrodes. Prolonged biasing of these films by C. Santato and co‐workers leads to the growth of Au–eumelanin dendrites, as shown. These structures form upon application of electrical biases as low as 0.6 V and result in a sudden resistive change of the sample upon bridging the interelectrode region. This phenomenon, possibly related to the metal chelation properties of eumelanin, has to be considered in the design of eumelaninbased bioelectronic devices and can potentially be exploited for biocompatible memory devices. <boxed-text content-type="graphic" position="anchor" orientation="portrait"><graphic position="anchor" mimetype="image" xlink:href="ark:/27927/pgg4t3561d0" orientation="portrait" xlink:type="simple" xmlns:xlink="http://www.w3.org/1999/xlink" /></boxed-text></p> </abstract>