Evaluation of CoFeSiB microwires for biomechanical stress studies

Loanna Giouroudi*, Jurgen Kosel, Horia Chiriac, Cornie Scheffer

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

1 Scopus citations


In this paper, we evaluate and discuss the application of amorphous glass-covered microwires for biomechanical stress studies. The dependence of the magnetoinductance, of amorphous glasscovered magnetic CoFeSiB microwires upon the application of a force perpendicular to their longitudinal axis was studied. This principle could be used to estimate loads in biological tissues such as muscles, tendons and ligaments. For example, a loaded tendon will elongate, leading to a longitudinal and negative transverse strain (the Poisson effect). The tendon's collagen fibers will consequently squeeze an implanted microwire and the wire's inductivity will change. As an example of a practical application, stress measurements were performed using porcine achilles tendons. Results are presented indicating the sensitivity and optimum electrical parameters of the microwires when used as a biomechanical load sensor.

Original languageEnglish (US)
Pages (from-to)378-382
Number of pages5
JournalSensor Letters
Issue number3
StatePublished - Dec 1 2009


  • Amorphous glass-covered microwires
  • Biological tissues
  • Biomechanics
  • Magnetic sensor
  • Stress measurements

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Atomic and Molecular Physics, and Optics


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