Switchable counterion gradients around charged metallic nanoparticles enable reception of radio waves

Journal: Science Advances

Published: 2018-10-01

DOI: 10.1126/sciadv.aau3546

Affiliations: 9

Authors: 9

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Research Highlight

Greener electronics gets a good reception

© Ralf Hiemisch/Getty

© Ralf Hiemisch/Getty

Components made from films of metal nanoparticles surrounded by organic material could lead to flexible electronics that are greener to manufacture than silicon-based devices.

Modern electronic circuits predominantly use components made from silicon-based semiconducting materials. However, devices made from metallic nanoparticles combined with charged organic materials could provide a greener alternative. But such devices have proved challenging to fabricate.

Now, an international team of scientists, including researchers from Northwestern Polytechnical University in China, has made a diode by sandwiching ultrathin layers of gold nanoparticles covered by a shell of positively charged trimethylamine ions between a gold electrode and a porous carbon nanotube–graphene electrode.

The team used the diode in a circuit to convert radio signals into sound waves and demonstrated that a porous electrode gave a ten-fold increase in rectification efficiency — the ability to convert an alternating current into a direct current.

Supported content

  1. Science Advances 4, 3546 (2018). doi: 10.1126/sciadv.aau3546
Institutions FC
CAS Center for Excellence in Nanoscience, NCNST CAS, China 0.35
CAS Key Laboratory of Nanosystem and Hierarchical Fabrication, NCNST CAS, China 0.24
School of Materials Science and Engineering (SMSE), NPU, China 0.15
CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, IHEP CAS, China 0.11
University of Chinese Academy of Sciences (UCAS), China 0.04
Institute of Organic Chemistry, PAS, Poland 0.04
Center for Soft and Living Matter, IBS, South Korea 0.04
Department of Chemistry, UNIST, South Korea 0.04

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