Issue 15, 2013
From the journal:

Analyst

On-chip capacitively coupled contactless conductivity detection using “injected” metal electrodes†

Leigh D. Thredgold,a   Dmitriy A. Khodakov,a   Amanda V. Ellisa  and  Claire E. Lenehan*b  

* Corresponding authors

a Flinders Centre for Nanoscale Science and Technology, Flinders University, GPO Box 2100, Adelaide 5001, Australia

b School of Chemical and Physical Sciences, Flinders University, GPO Box 2100, Adelaide 5001, Australia
E-mail: claire.lenehan@flinders.edu.au

Abstract

We demonstrate the use of injected gallium electrodes for capacitively coupled contactless conductivity detection (C4D) within a microchip electrophoresis device. Evaluation of the electrodes for quantitative detection of electrophoretically separated lithium, sodium and potassium ions showed the system offers competitive detection limits of 6.1 × 10−6 M, 6.7 × 10−6 M and 8.5 × 10−6 M, respectively. The fabrication process is fast, highly reproducible, and eliminates difficulties with electrode alignment. Using this approach C4D can be readily achieved in any microchip by simply adding extra ‘electrode’ channels to the microchip design.

Graphical abstract: On-chip capacitively coupled contactless conductivity detection using “injected” metal electrodes

About
Cited by
Related
Download options Please wait...

Supplementary files

Article information

DOI
https://doi.org/10.1039/C3AN00870C
Article type
Communication
Submitted
29 Apr 2013
Accepted
03 Jun 2013
First published
04 Jun 2013

Analyst, 2013,138, 4275-4279

Permissions

Request permissions

On-chip capacitively coupled contactless conductivity detection using “injected” metal electrodes

L. D. Thredgold, D. A. Khodakov, A. V. Ellis and C. E. Lenehan, Analyst, 2013, 138, 4275 DOI: 10.1039/C3AN00870C

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements