Detection of nuclear magnetic resonance with an anisotropic magnetoresistive sensor
F. Verpillat, M.P. Ledbetter, D. Budker, S. Xu, D. Michalak, C. Hilty,, S. Antonijevic, A. Pines, L.-S. Bouchard
TL;DR
This paper demonstrates the detection of nuclear magnetic resonance (NMR) signals using an anisotropic magnetoresistive (AMR) sensor in a remote-detection setup, highlighting its potential for microfluidic lab-on-a-chip applications.
Contribution
It introduces the use of AMR sensors for NMR detection in a remote configuration, suitable for microfluidic applications, which is a novel approach.
Findings
Successful detection of NMR signals with AMR sensors
AMR sensors are suitable for microfluidic NMR applications
Remote detection setup enables NMR in flowing water samples
Abstract
We report detection of nuclear magnetic resonance (NMR) using an anisotropic magnetoresistive (AMR) sensor. A ``remote-detection'' arrangement was used, in which protons in flowing water were pre-polarized in the field of a superconducting NMR magnet, adiabatically inverted, and subsequently detected with an AMR sensor situated downstream from the magnet and the adiabatic inverter. AMR sensing is well suited for NMR detection in microfluidic ``lab-on-a-chip'' applications.
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