Confined electrochemical deposition in sub-15 nm space for preparing nanogap electrodes

J. Sadar, Y. Wang, Quan Qing

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Electrode gaps with nanoscale separation offer great promise for molecular electronics and biosensing. Previous electrochemical methods to prepare nanogaps by depositing metal on pre-defined electrode tips have suffered from lack of control in the thickness direction and reproducible control of gap size. Here we report a new process wherein the electrochemical deposition is confined by a cavity to produce a nanogap with thickness smaller even than that of the initial electrodes. Using this process, we demonstrate controlled and reversible electrochemical deposition in a sub-15 nm space, to produce a nano-fluidic channel with finely tunable nanogap control electrodes for biosensing applications.

Original languageEnglish (US)
Title of host publicationSolid-State Electronics and Photonics in Biology and Medicine 4
PublisherElectrochemical Society Inc.
Pages65-72
Number of pages8
Volume77
Edition7
ISBN (Electronic)9781607685395
DOIs
StatePublished - Jan 1 2017
EventSymposium on Solid-State Electronics and Photonics in Biology and Medicine 4 - 231st ECS Meeting 2017 - New Orleans, United States
Duration: May 28 2017Jun 1 2017

Other

OtherSymposium on Solid-State Electronics and Photonics in Biology and Medicine 4 - 231st ECS Meeting 2017
CountryUnited States
CityNew Orleans
Period5/28/176/1/17

ASJC Scopus subject areas

  • Engineering(all)

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    Sadar, J., Wang, Y., & Qing, Q. (2017). Confined electrochemical deposition in sub-15 nm space for preparing nanogap electrodes. In Solid-State Electronics and Photonics in Biology and Medicine 4 (7 ed., Vol. 77, pp. 65-72). Electrochemical Society Inc.. https://doi.org/10.1149/07707.0065ecst