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Abstract #2676

Unilateral Linear Halbach magnets for single sided magnetic resonance: generalized design framework and experimental validation

Ashvin Bashyam1,2, Matthew Li2,3, and Michael Cima2,4

1Electrical Engineering & Computer Science, Massachusetts Institute of Technology, Cambridge, MA, United States, 2David H. Koch Institute For Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA, United States, 3Harvard–MIT Program of Health Sciences and Technology, Massachusetts Institute of Technology, Cambridge, MA, United States, 4Department of Materials Science and Engineering, Massachusetts Institute of Technology, Cambridge, MA, United States

Single-sided NMR has the potential for broad utility, especially as a portable diagnostic for disorders in fluid regulation. These sensors require a remote, high field, uniform magnetic field to achieve sufficient sensitivity. We demonstrate a new magnet geometry, the Unilateral Linear Halbach, that combines design principles from sweet-spot and linear Halbach magnets to achieve this goal. Sensitivity analysis using finite element analysis produces a generalized framework for Unilateral Linear Halbach design. Experimental validation through the fabrication of a magnet assembly shows close agreement with the simulated magnetic field. Unilateral Linear Halbach magnets increase the sensitivity, portability, and versatility of single sided NMR.

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