Open micro-fluidic system for atomic force microscopy-guided in situ electrochemical probing of a single cell

Won Hyoung Ryu, Zubin Huang, Joong Sun Park, Jeffrey Moseley, Arthur R. Grossman, Rainer J. Fasching, Fritz B. Prinz

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

Ultra-sharp nano-probes and customized atomic force microscopy (AFM) have previously been developed in our laboratory for in situ sub-cellular probing of electrochemical phenomena in living plant cells during their photosynthesis. However, this AFM-based electrochemical probing still has numerous engineering challenges such as immobilization of the live cells, compatibility of the immobilization procedure with AFM manipulation of the probe, maintenance of biological activity of the cells for an extended time while performing the measurements, and minimization of electrochemical noise. Thus, we have developed an open micro-fluidic channel system (OMFC) in which individual cells can be immobilized in micro-traps by capillary flow. This system affords easy AFM access and allows for maintenance of the cells in a well-defined chemical environment, which sustains their biological activity. The use of micro-channels for making the electrochemical measurements significantly reduces parasitic electrical capacitances and allows for current detection in the sub-pico-ampere range at high signal bandwidths. The OMFC was further studied using simulation packages for optimal design conditions. This system was successfully used to measure light-dependent oxidation currents of a few pico-amperes from the green alga Chlamydomonas reinhardtii.

Original languageEnglish
Pages (from-to)1460-1467
Number of pages8
JournalLab on a Chip
Volume8
Issue number9
DOIs
Publication statusPublished - 2008 Jan 1

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Atomic Force Microscopy
Fluidics
Atomic force microscopy
Bioactivity
Immobilization
Electric Capacitance
Capillary flow
Chlamydomonas reinhardtii
Chlorophyta
Photosynthesis
Plant Cells
Algae
Noise
Capacitance
Cells
Maintenance
Bandwidth
Light
Oxidation

All Science Journal Classification (ASJC) codes

  • Bioengineering
  • Biochemistry
  • Chemistry(all)
  • Biomedical Engineering

Cite this

Ryu, W. H., Huang, Z., Sun Park, J., Moseley, J., Grossman, A. R., Fasching, R. J., & Prinz, F. B. (2008). Open micro-fluidic system for atomic force microscopy-guided in situ electrochemical probing of a single cell. Lab on a Chip, 8(9), 1460-1467. https://doi.org/10.1039/b803450h
Ryu, Won Hyoung ; Huang, Zubin ; Sun Park, Joong ; Moseley, Jeffrey ; Grossman, Arthur R. ; Fasching, Rainer J. ; Prinz, Fritz B. / Open micro-fluidic system for atomic force microscopy-guided in situ electrochemical probing of a single cell. In: Lab on a Chip. 2008 ; Vol. 8, No. 9. pp. 1460-1467.
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Ryu, WH, Huang, Z, Sun Park, J, Moseley, J, Grossman, AR, Fasching, RJ & Prinz, FB 2008, 'Open micro-fluidic system for atomic force microscopy-guided in situ electrochemical probing of a single cell', Lab on a Chip, vol. 8, no. 9, pp. 1460-1467. https://doi.org/10.1039/b803450h

Open micro-fluidic system for atomic force microscopy-guided in situ electrochemical probing of a single cell. / Ryu, Won Hyoung; Huang, Zubin; Sun Park, Joong; Moseley, Jeffrey; Grossman, Arthur R.; Fasching, Rainer J.; Prinz, Fritz B.

In: Lab on a Chip, Vol. 8, No. 9, 01.01.2008, p. 1460-1467.

Research output: Contribution to journalArticle

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