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Bartosz Andrzej Grzybowski
첨단연성물질 연구단
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Switchable counterion gradients around charged metallic nanoparticles enable reception of radio waves

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Title
Switchable counterion gradients around charged metallic nanoparticles enable reception of radio waves
Author(s)
Xing Zhao; Bin Tu; Mengyao Li; Xiaojing Feng; Yuchun Zhang; Qiaojun Fang; Tiehu Li; Bartosz A. Grzybowski; Yong Yan
Publication Date
2018-10
Journal
SCIENCE ADVANCES, v.4, no.10, pp.eaau3546 -
Publisher
AMER ASSOC ADVANCEMENT SCIENCE
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. (c) 2017 The Authors.
URI
https://pr.ibs.re.kr/handle/8788114/5159
ISSN
2375-2548
Appears in Collections:
Center for Soft and Living Matter(첨단연성물질 연구단) > Journal Papers (저널논문)
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