Real Time Visualization of Dynamic Magnetic Fields with a Nanomagnetic FerroLens

TL;DR

This paper introduces a novel real-time visualization method for dynamic magnetic fields using a nanomagnetic ferrolens, demonstrated on a transmitting antenna, enabling unprecedented high-resolution magnetic field imaging.

Contribution

The paper presents a new nanomagnetic visualization technique and apparatus, called SSFM, for real-time observation of dynamic magnetic fields, a novel application in nanomagnetism research.

Findings

First real-time high-resolution magnetic field images inside an antenna.

Successful visualization of low-frequency, fluctuating magnetic fields.

Demonstration of a new scientific tool with broad potential applications.

Abstract

Due to advancements in nanomagnetism and latest nanomagnetic materials and devices, a new potential field has been opened up for research and applications which was not possible before. We herein propose a new research field and application for nanomagnetism for the visualization of dynamic magnetic fields in real-time. In short, Nano Magnetic Vision. A new methodology, technique and apparatus were invented and prototyped in order to demonstrate and test this new application. As an application example the visualization of the dynamic magnetic field on a transmitting antenna was chosen. Never seen before high-resolution, photos and real-time color video revealing the actual dynamic magnetic field inside a transmitting radio antenna rod has been captured for the first time. The antenna rod is fed with six hundred volts, orthogonal pulses. This unipolar signal is in the very low frequency (i.e. VLF) range. The signal combined with an extremely short electrical length of the rod, ensures the generation of a relatively strong fluctuating magnetic field, analogue to the signal transmitted, along and inside the antenna. This field is induced into a ferrolens and becomes visible in real-time within the normal human eyes frequency spectrum. The name we have given to the new observation apparatus is, SPIONs Superparamagnetic Ferrolens Microscope (SSFM), a powerful passive scientific observation tool with many other potential applications in the near future.