ArticleMagma (New York, N.Y.)2026
Wireless and batteryless two-dimensional opto-electro-mechanical positioner inside 3 T MRI scanner.
Article in Magma (New York, N.Y.), 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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6 authors.
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Abstract
objectiveTo present a wireless, batteryless, and optically powered two-dimensional (2D) electro-mechanical positioner operable inside a 3 T MRI scanner.
methodsThe system uses Lorentz force actuators, each comprising a coil connected to a monocrystalline silicon solar cell, leveraging the scanner's strong B
resultsExperimental validation includes dynamic torque measurements inside a 53 mT home-made desktop Helmholtz coil. The clinical-grade 3 T MRI scanner experiments demonstrate successful positioning in X and Y directions via remote laser diode control and power transmission through fiber optic cables. The rotor achieves 150 rotations per minute and 3.4 mN∙m torque at 6.3 mW/mm
conclusionThis is the first demonstration of a remotely controlled, optically powered 2D positioner operating wirelessly inside a clinical 3 T MRI. It enables precise marker placement or mechanical stimulation and can be extended to 5 degrees of freedom for MRI-guided interventions such as biopsies.
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