Acta Mechanica Slovaca 2016, 20(4):54-59 | DOI: 10.21496/ams.2016.033
Validation of the Fixation of Amorphous Magnetic Glass-coated Magnetic for Biomedical Applications
- Department of Biomedical Engineering and Measurement, Faculty of Mechanical Engineering, Technical University of Kosice, Letna 9, 042 00 Kosice, Slovakia
Sufficient control of the mechanical stress and temperature at the tissue-implant interface after the process of implantation is an important part of validation of the implantation and acceptance of the implant by the internal environment of the body. For this purpose being able to measure these values without contact and with the smallest possible interference in the implant is important. For these measurements the use of amorphous magnetic glass-coated microwires (AMGCM) is very promising.
In comparisons with the sensors which are currently used in intelligent implantations, e.g. RFID sensors, which have dimensions on the order of tens of cm and are relatively expensive, AMGCM have a great advantage in sizes (less than 50 μm in diameter and for a functional sensor a length of 5 mm is minimally necessary) and their manufacture is very inexpensive.
This work is focused on the control of fixation of an AMGCM in a sample of the manufacturing technology Direct Metal Laser Sintering. In addition to the metal magnetic core itself, the fixation of an AMGCM has, due to the magneto-elastic effect, an important influence on the magnetic characteristics of the microwire used. The volume of the fixation material and thus also the working force on the microwire influences the sensitivity of the microwire and influences its Curie temperature (TC), which is an important variable in preparation of the composition of the metal core of the microwire.
Keywords: amorphous magnetic glass-coated microwires, metrotomography, magnetoelasticity, magnetostriction, switching field, implant, fixation, microsensors, smart implants
Published: October 31, 2016 Show citation
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