Mohamed Rabie, Sobhy S. Ibrahim, Alaaeldain A. Eltawil, H. H. Hassan, B. M. Sayed
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Magnetic Levitation as a Reliable Means to Determine the Density of Small Size Materials
This study explains a magnetic levitation system to measure the material density with high accuracy. The main components of the magnetic levitation system are the paramagnetic solution, the two permanent magnets, and the digital camera. When the sample is submerged in a paramagnetic solution, it can be suspended at an equilibrium position between the two similar magnets with like poles facing each other. A 3D model is explained to facilitate the measuring process. The COMSOL simulation is performed to find suitable distance between the two magnets for measuring the material density up to 1.2 g/cm3. The magnetic levitation system is examined and verified using standard-density glass beads. Then, various samples (powder or solid) with different densities are tested. According to the obtained results, the magnetic levitation system can be used to measure and determine the material density with the maximum deviation of ±0.0003 g/cm3.
期刊介绍：
Instruments and Experimental Techniques is an international peer reviewed journal that publishes reviews describing advanced methods for physical measurements and techniques and original articles that present techniques for physical measurements, principles of operation, design, methods of application, and analysis of the operation of physical instruments used in all fields of experimental physics and when conducting measurements using physical methods and instruments in astronomy, natural sciences, chemistry, biology, medicine, and ecology.
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