Electrically guided microweb formation with Ag nanofibers under UV irradiation and its application to electrochemical and plasmonic devices

Masahiro Takeji, Yuya Oaki, Hiroaki Imai

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

Micrometer-scale webs consisting of interconnected Ag nanofibers were prepared in a solution system containing Ag + ions and ethylenediaminetetraacetate under UV illumination. The site-specific formation of the Ag microwebs on desired locations, such as the surface of metal microwires and transparent glass substrates, was achieved with the application of a weak negative bias. The electrode covered with the Ag microweb exhibited a high performance as an electrochemical capacitor because of its well-connected structure with a high specific surface area and a wide space for the smooth ion transfer. Significant negative photoconductivity under visible light illumination was observed with the transparent Ag microwebs formed on a glass plate due to the strong interaction between electrons and excited surface plasmon polaritons in the nanoscale network.

Original languageEnglish
Pages (from-to)6103-6107
Number of pages5
JournalJournal of Physical Chemistry C
Volume116
Issue number10
DOIs
Publication statusPublished - 2012 Mar 15

Fingerprint

Nanofibers
Lighting
Irradiation
Ions
Glass
irradiation
Photoconductivity
illumination
Specific surface area
Capacitors
glass
Metals
electrochemical capacitors
photoconductivity
polaritons
Electrodes
Electrons
micrometers
ions
Substrates

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Electronic, Optical and Magnetic Materials
  • Surfaces, Coatings and Films
  • Energy(all)

Cite this

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AU - Oaki, Yuya

AU - Imai, Hiroaki

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AB - Micrometer-scale webs consisting of interconnected Ag nanofibers were prepared in a solution system containing Ag + ions and ethylenediaminetetraacetate under UV illumination. The site-specific formation of the Ag microwebs on desired locations, such as the surface of metal microwires and transparent glass substrates, was achieved with the application of a weak negative bias. The electrode covered with the Ag microweb exhibited a high performance as an electrochemical capacitor because of its well-connected structure with a high specific surface area and a wide space for the smooth ion transfer. Significant negative photoconductivity under visible light illumination was observed with the transparent Ag microwebs formed on a glass plate due to the strong interaction between electrons and excited surface plasmon polaritons in the nanoscale network.

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