Accelerated nanoscale magnetic resonance imaging through phase multiplexing

TL;DR

This paper introduces a phase multiplexing method for accelerated nanoscale magnetic resonance imaging, enabling simultaneous detection of multiple signals and achieving subnanometer spatial resolution.

Contribution

The authors develop and demonstrate a phase multiplexing technique that allows parallel detection of nuclear spin signals, significantly speeding up nanoscale MRI.

Findings

Simultaneous detection of 1H and 19F signals from different nuclear species.

Achieved imaging resolution better than 5 nm.

Demonstrated subnanometer positional accuracy.

Abstract

We report a method for accelerated nanoscale nuclear magnetic resonance imaging by detecting several signals in parallel. Our technique relies on phase multiplexing, where the signals from different nuclear spin ensembles are encoded in the phase of an ultrasensitive magnetic detector. We demonstrate this technique by simultaneously acquiring statistically polarized spin signals from two different nuclear species (1H, 19F) and from up to six spatial locations in a nanowire test sample using a magnetic resonance force microscope. We obtain one-dimensional imaging resolution better than 5 nm, and subnanometer positional accuracy.