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Microscale Vortex-assisted Electroporator for Sequential Molecular Delivery
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Non-electrolytic microelectroporation.

Chenang Lyu1,2, Jianping Wang1, Boris Rubinsky3

  • 1College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou, 310058, China.

Biomedical Microdevices
|July 16, 2017
PubMed
Summary
This summary is machine-generated.

Coating microelectroporation devices with a dielectric layer prevents damaging electrolysis. Numerical analysis shows this non-electrolytic approach

Keywords:
Dielectric insulating layerElectrolyticMicroelectroporationNumerical analysis

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Area of Science:

  • Microfluidics
  • Biotechnology
  • Electroporation technologies

Background:

  • Electrolysis is a detrimental electrochemical reaction in microfluidic electroporation devices.
  • The increased electrode surface area in micro/nano-electroporation exacerbates electrolysis.
  • Dielectric insulating layers offer a potential solution to mitigate electrolysis.

Purpose of the Study:

  • To investigate the impact of a dielectric insulating layer on a singularity microelectroporation device.
  • To analyze the performance of non-electrolytic microelectroporation using numerical simulations.
  • To understand how design parameters influence electroporation performance in coated devices.

Main Methods:

  • Numerical analysis of a singularity microelectroporation device with a dielectric insulating layer.
  • Simulation of various design parameters: voltage amplitude/frequency, geometry, and material properties.
  • Evaluation using properties of four dielectric materials and four ionic solutions relevant to microelectroporation.

Main Results:

  • The dielectric layer effectively suppresses detrimental electrolytic effects.
  • System performance is influenced by input voltage, frequency, geometry, and material properties.
  • Performance saturation was observed, beyond which parameter changes had no further effect, indicating a filtering behavior.

Conclusions:

  • Non-electrolytic microelectroporation using dielectric coatings is a viable strategy.
  • Design parameters significantly impact device performance, with saturation effects noted.
  • This approach enhances cell membrane permeabilization efficiency and reliability in microfluidic devices.