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GrzybowskiBartosz Andrzej

Grzybowski, Bartosz A.
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Switchable counterion gradients around charged metallic nanoparticles enable reception of radio waves

Author(s)
Zhao, XingTu, BinLi, MengyaoFeng, XiaojingZhang, YuchunFang, QiaojunLi, TiehuGrzybowski, Bartosz A.Yan, Yong
Issued Date
2018-10
DOI
10.1126/sciadv.aau3546
URI
https://scholarworks.unist.ac.kr/handle/201301/25290
Fulltext
http://advances.sciencemag.org/content/4/10/eaau3546
Citation
SCIENCE ADVANCES, v.4, no.10, pp.eaau3546
Abstract
Mechanically flexible, easy-to-process, and environmentally benign materials capable of current rectification are interesting alternatives to "hard" silicon-based devices. Among these materials are metallic/charged-organic nanoparticles in which electronic currents though metal cores are modulated by the gradients of counterions surrounding the organic ligands. Although layers of oppositely charged particles can respond to both electronic and chemical signals and can function even under significant mechanical deformation, the rectification ratios of these "chemoelectronic" elements have been, so far, low. This work shows that significantly steeper counterion gradients and significantly higher rectification ratios can be achieved with nanoparticles of only one polarity but in contact with a porous electrode serving as a counterion "sink." These composite structures act as rectifiers even at radio frequencies, providing a new means of interfacing counterions' dynamics with high-frequency electronic currents.
Publisher
AMER ASSOC ADVANCEMENT SCIENCE
ISSN
2375-2548
Keyword
HYDRATED ELECTRONSUPERCAPACITORSFILMSTRANSPORTJUNCTIONSCAPACITANCEMONOLAYERSCLUSTERSENERGYGOLD

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