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Related Experiment Video

Updated: Jun 20, 2026

Magnetically-Assisted Remote Controlled Microcatheter Tip Deflection under Magnetic Resonance Imaging
11:27

Magnetically-Assisted Remote Controlled Microcatheter Tip Deflection under Magnetic Resonance Imaging

Published on: April 4, 2013

Computational simulation of a magnetic microactuator for tissue engineering applications.

Joseph Keyes1, Michael Junkin, Pak Kin Wong

  • 1Graduate Interdisciplinary Program in Biomedical Engineering, The University of Arizona, Tucson, AZ 85721-0119, USA.

Biomedical Microdevices
|August 18, 2009
PubMed
Summary

Researchers designed a novel magnetic microactuator to precisely stimulate tissue engineered constructs (TECs). This microdevice uses ferromagnetically doped microflaps to provide localized, anisotropic mechanical forces, optimizing TEC development for better tissue mimicry.

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Area of Science:

  • Biomedical Engineering
  • Materials Science
  • Tissue Engineering

Background:

  • Next-generation tissue engineered constructs (TECs) require controllable microstructures to mimic native tissue function.
  • Optimizing TEC microstructures necessitates spatiotemporally regulated mechanical and biochemical stimuli.
  • Limited techniques exist for localized stimulation of TECs.

Purpose of the Study:

  • To design a novel microdevice for localized, inhomogeneous, and anisotropic stimulation of TECs.
  • To investigate the influence of magnetic and geometric properties on microflap (MF) deflection.
  • To computationally and experimentally validate the microdevice's performance.

Main Methods:

  • Development of a magneto-structural finite element model for the microdevice.

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Electric and Magnetic Field Devices for Stimulation of Biological Tissues

Published on: May 15, 2021

Related Experiment Videos

Last Updated: Jun 20, 2026

Magnetically-Assisted Remote Controlled Microcatheter Tip Deflection under Magnetic Resonance Imaging
11:27

Magnetically-Assisted Remote Controlled Microcatheter Tip Deflection under Magnetic Resonance Imaging

Published on: April 4, 2013

Magnetic Resonance Elastography Methodology for the Evaluation of Tissue Engineered Construct Growth
12:18

Magnetic Resonance Elastography Methodology for the Evaluation of Tissue Engineered Construct Growth

Published on: February 9, 2012

Electric and Magnetic Field Devices for Stimulation of Biological Tissues
13:29

Electric and Magnetic Field Devices for Stimulation of Biological Tissues

Published on: May 15, 2021

  • Simulation of microflap (MF) deflection based on magnetic and geometric parameters.
  • Experimental validation using a custom test setup to compare predicted and measured MF displacement.

    • Main Results:

    • A low density of ferromagnetic material is sufficient for significant MF deflection and force application (175 microm, ~7% TEC strain).
    • MF-to-magnet distance is a more critical factor than MF magnetic permeability for controlling deflection.
    • Experimental validation showed good agreement with computational predictions (5.9% difference in MF displacement).

    Conclusions:

    • A novel magnetic microactuator utilizing ferromagnetically doped polydimethylsiloxane microflaps (MFs) has been designed for TEC stimulation.
    • Computational modeling provides a foundation for optimizing microdevice design with multiple MFs and magnets.
    • The developed microdevice enables precise, spatially resolved mechanical stimulation of TECs in preferred directions.