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Abstract #0219

Cantilever heterodyne mixing and filtering for MRI

Banerjee M, Paulson C, Weide D, Grist T
University of Wisconsin,Madison

This project is to realize NMR antennas for wideband frequency detection using magnetic force microscopy (MFM).Micron-scale current loops on micro-fabricated cantilevers produce magnetic dipole forces to make the cantilever oscillate at its mechanical resonance frequency. Theoretical calculations and experimental demonstration has shown that frequency tunable, micro-mechanical detector suggested here can be used to exceed the performance of a standard NMR detector if Johnson noise can be eliminated via cryogenic cooling.