Zeptonewton and Attotesla per Centimeter Metrology With Coupled Oscillators
Abstract
We present the coupled oscillator: a new mechanism for signal amplification with widespread application in metrology. We introduce the mechanical theory of this framework, and support it by way of simulations. We present a particular implementation of coupled oscillators: a microelectromechanical system (MEMS) that uses one large (~100mm) N52 magnet coupled magnetically to a small (~0.25mm), oscillating N52 magnet, providing a force resolution of 200zN measured over 1s in a noiseless environment. We show that the same system is able to resolve magnetic gradients of 130aT/cm at a single point (within 500um). This technology therefore has the potential to revolutionize force and magnetic gradient sensing, including high-impact areas such cardiac and brain imaging.
Cite
@article{arxiv.2402.14678,
title = {Zeptonewton and Attotesla per Centimeter Metrology With Coupled Oscillators},
author = {Ian Bouche and Josh Javor and Abhishek Som and David K. Campbell and David J. Bishop},
journal= {arXiv preprint arXiv:2402.14678},
year = {2024}
}
Comments
13 pages, 17 figures