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Related Experiment Video

Updated: Jun 13, 2026

MRM Microcoil Performance Calibration and Usage Demonstrated on Medicago truncatula Roots at 22 T

MRM Microcoil Performance Calibration and Usage Demonstrated on Medicago truncatula Roots at 22 T

Published on: January 16, 2021

On-chip three dimensional microcoils for MRI at the microscale.

Vlad Badilita¹, Kai Kratt, Nicoleta Baxan

¹University of Freiburg, Department of Microsystems Engineering (IMTEK), Laboratory for Microactuators, Georges-Köhler-Allee 102, 79110 Freiburg, Germany. vlad.badilita@imtek.de

|April 22, 2010

Summary

We developed a new MEMS technology for 3D microcoils, achieving 25 micrometer resolution in microscale MRI. This breakthrough enables high-quality magnetic resonance imaging at the microscale.

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Last Updated: Jun 13, 2026

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Published on: May 12, 2019

Area of Science:

Microelectromechanical Systems (MEMS)
Magnetic Resonance Imaging (MRI)

Background:

Microscale MRI requires high-performance microcoils.
Existing technologies face limitations in precision and integration.

Purpose of the Study:

To present a novel MEMS-integrated technology for fabricating 3D solenoidal microcoils.
To demonstrate the capability of these microcoils in microscale MRI applications.

Main Methods:

Utilizing a fully MEMS-integrated fabrication process.
Manufacturing geometrically perfect 3D solenoidal microcoils with 5 windings of 25 micrometer diameter gold wire.
Operating at a frequency of 400 MHz.

Main Results:

Achieved 25 micrometer isotropic resolution in MR images.
Reported microcoil quality factors as high as 46.
Successfully imaged a copper sulfate aqueous phantom.

Conclusions:

The developed MEMS technology enables the production of high-quality microcoils for microscale MRI.
This advancement facilitates high-resolution imaging at the microscale.