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Related Concept Videos

Cell Migration01:09

Cell Migration

Cell migration, the process by which cells move from one location to another, is essential for the proper development and viability of organisms throughout their life. When cells are not able to migrate properly to their ordained locations, various disorders may occur. For example, disruption in cell migration causes chronic inflammatory diseases such as arthritis.

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Electrotaxis Studies of Lung Cancer Cells using a Multichannel Dual-electric-field Microfluidic Chip
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Label-Free All-Electrical Tracking of Individual and Collective Cell Migration on a Megapixel CMOS Capacitance

Hyuntae Jeong1, Pushkaraj Joshi1, Yinshi Hu1

  • 1School of Engineering, Brown University. 184 Hope St Box D. Providence, Rhode Island, USA.

Biorxiv : the Preprint Server for Biology
|June 29, 2026
PubMed
Summary

This study introduces a novel capacitance imaging array for label-free live-cell tracking. This technology enables high-resolution imaging from single cells to large tissues, overcoming limitations of traditional optical microscopy.

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Last Updated: Jun 30, 2026

Electrotaxis Studies of Lung Cancer Cells using a Multichannel Dual-electric-field Microfluidic Chip
08:35

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Published on: December 29, 2015

Microfluidic Platform with Multiplexed Electronic Detection for Spatial Tracking of Particles
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A Label-free Technique for the Spatio-temporal Imaging of Single Cell Secretions
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A Label-free Technique for the Spatio-temporal Imaging of Single Cell Secretions

Published on: November 23, 2015

Area of Science:

  • Biophysics
  • Cell Biology
  • Bioengineering

Background:

  • Label-free tracking of adherent cells is crucial for understanding tissue repair, inflammation, and cancer.
  • Optical microscopy faces challenges with low contrast and dynamic cell changes in unlabeled cells.
  • Previous electrical capacitance methods averaged signals from multiple cells due to large electrode sizes.

Purpose of the Study:

  • To develop a label-free live-cell tracking method using a high-resolution capacitance sensor array.
  • To enable visualization and analysis of cell migration, proliferation, and tissue dynamics.
  • To demonstrate a portable and scalable imaging solution for diverse biological research settings.

Main Methods:

  • Utilized a CMOS capacitance sensor array with over 1 million pixels (10 micron pitch) over a 1 cm² area.
  • Employed optical flow algorithms for reconstructing migration and proliferation dynamics from segmented cell morphology.
  • Applied mutual capacitance measurements with programmable electrode spacing for topographical tissue imaging.

Main Results:

  • Achieved clear segmentation of single-cell morphology and reconstruction of cell dynamics.
  • Successfully tracked the spreading of multicellular spheroids, identifying collective leader cell fronts.
  • Demonstrated label-free imaging of millimeter-scale honeycomb tissues, bypassing multi-image stitching.

Conclusions:

  • CMOS capacitance imaging arrays offer a versatile platform for label-free imaging across multiple biological scales.
  • This technology provides a portable and scalable alternative to optical microscopy, especially in resource-limited environments.
  • The developed system facilitates insights into cellular and tissue dynamics without the need for exogenous labels.