Biomedical Microdevices

, Volume 11, Issue 6, pp 1239–1250

Electrical characterization of a single cell electroporation biochip with the 2-D scanning vibrating electrode technology

  • Aeraj ul Haque
  • Mahvash Zuberi
  • Ruben E. Diaz-Rivera
  • D. Marshall Porterfield
Article

DOI: 10.1007/s10544-009-9343-3

Cite this article as:
ul Haque, A., Zuberi, M., Diaz-Rivera, R.E. et al. Biomed Microdevices (2009) 11: 1239. doi:10.1007/s10544-009-9343-3

Abstract

Advancements in microfabrication technology have lead to the development of planar micro-pore electroporation technology. This technology has been shown to provide greater control in single cell manipulation, and electroporation which is independent from cell size. In this work we report direct and spatially resolved characterization of electric currents within a planar micropore electroporation biochip to better understand this phenomenon at the cellular level. This work was performed using a two-dimensional (2-D) vibrating probe (VP). Analysis of the spatial patterns of current density yielded a 4th order polynomial profile in the planes parallel to the biochip’s surface and a three parameter hyperbolic decay profile in the planes perpendicular to the chip surface. A finite element model was developed which correlates with actual measurements on the micropore. Preliminary VP current density measurements of electroporated HepG2 cells revealed a significantly high current density minutes after electroporation even with non-electroporative pulses. These results indicate that cells take a considerable amount of time for complete electrophysiological recovery and indicate the use of the VP as a cell viability indicator for optimized electroporation.

Keywords

ElectroporationBiochipMicroporeCurrent densityVibrating probe

Supplementary material

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Supplementary Fig. 3

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Copyright information

© Springer Science+Business Media, LLC 2009

Authors and Affiliations

  • Aeraj ul Haque
    • 1
  • Mahvash Zuberi
    • 1
  • Ruben E. Diaz-Rivera
    • 2
    • 3
  • D. Marshall Porterfield
    • 4
    • 5
  1. 1.Department of Agricultural and Biological Engineering, Bindley Bioscience Center- Physiological Sensing FacilityPurdue UniversityWest LafayetteUSA
  2. 2.Department of Mechanical EngineeringUniversity of PuertoMayagüezPuerto Rico
  3. 3.Weldon School of Biomedical EngineeringPurdue UniversityWest LafayetteUSA
  4. 4.Department of Agricultural and Biological Engineering, Weldon School of Biomedical Engineering, Bindley Bioscience Center- Physiological Sensing FacilityPurdue UniversityWest LafayetteUSA
  5. 5.Department of Horticulture and Landscape Architecture, Weldon School of Biomedical Engineering, Bindley Bioscience Center- Physiological Sensing FacilityPurdue UniversityWest LafayetteUSA