Microfluidic Tissue Barrier Sensor Chip with Integrated Microelectrodes and Ultrathin Microporous Membrane

Pratik V. Tawade, Hande Aydogmus, Lovro Ivancevic, Jia Jun Yeh, Vasiliki Gkouzioti, Jean Philippe Frimat, Jaap Den Toonder, Massimo Mastrangeli*

*Corresponding author for this work

Research output: Chapter in Book/Conference proceedings/Edited volumeConference contributionScientificpeer-review

Abstract

We present a novel silicon-based organ-on-chip (OoC) device featuring integrated microelectrodes to assess barrier function in biological tissue co-cultures. The microfluidic device consists of two vertically-stacked microchannels separated by a submicron-thin, microporous silicon nitride membrane, enabling in vivo-like proximity for co-cultured tissues. The integrated four-probe electrode geometry on slanted microchannel sidewalls ensures unobstructed optical access to the membrane and consistent measurement repeatability. Experimental validation through electrical impedance spectroscopy supported the device's sensitivity to sodium chloride concentration. Fabricated through a scalable, wafer-scale batch process, the device additionally demonstrated biocompatibility and optical transparency, representing a significant advancement for in situ tissue barrier assessments.

Original languageEnglish
Title of host publication2025 IEEE 38th International Conference on Micro Electro Mechanical Systems, MEMS 2025
PublisherIEEE
Pages426-429
Number of pages4
ISBN (Electronic)9798331508890
DOIs
Publication statusPublished - 2025
Event38th IEEE International Conference on Micro Electro Mechanical Systems, MEMS 2025 - Kaohsiung, Taiwan
Duration: 19 Jan 202523 Jan 2025

Publication series

NameProceedings of the IEEE International Conference on Micro Electro Mechanical Systems (MEMS)
ISSN (Print)1084-6999

Conference

Conference38th IEEE International Conference on Micro Electro Mechanical Systems, MEMS 2025
Country/TerritoryTaiwan
CityKaohsiung
Period19/01/2523/01/25

Bibliographical note

Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-care
Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.

Keywords

  • barrier-on-chip
  • microfabrication
  • microfluidics
  • organ-on-chip
  • trans-epithelial electrical resistance

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