Journal
APPLIED PHYSICS LETTERS
Volume 112, Issue 14, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.5022727
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Funding
- National Science Foundation [11625208]
- National Natural Science Foundation of China [91748118, 11572190]
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In this letter, a density measurement method by magnetic levitation using the rotation mechanism is presented. By rotating the entire magnetic levitation device that consists of four identical magnets, the horizontal centrifugal force and gravity can be balanced by the magnetic forces in the x-direction and the z-direction, respectively. The controllable magnified centripetal acceleration is investigated as a means to improve the measurement sensitivity without destabilization. Theoretical and experimental results show that the density measurement method can be flexible in characterizing small differences in density by tuning the eccentric distance or rotating speed. The rotating-mode density measurement method using magnetic levitation has prospects of providing an operationally simple way in separations and quality control of objects with arbitrary shapes in materials science and industrial fields. Published by AIP Publishing.
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