Related Experiment Video
Updated: May 31, 2026

A Stable Phantom Material for Optical and Acoustic Imaging
Published on: June 16, 2023
Eddy-current non-inertial displacement sensing for underwater infrasound measurements
Dimitri M Donskoy1, Benjamin A Cray
1Stevens Institute of Technology, 711 Hudson Street, Hoboken, New Jersey 07030, USA. ddonskoy@stevens.edu
Abstract:
A non-inertial sensing approach for an Acoustic Vector Sensor (AVS), which utilizes eddy-current displacement sensors and operates well at Ultra-Low Frequencies (ULF), is described here. In the past, most ULF measurements (from mHertz to approximately 10 Hertz) have been conducted using heavy geophones or seismometers that must be installed on the seafloor; these sensors are not suitable for water column measurements. Currently, there are no readily available compact and affordable underwater AVS that operate within this frequency region. Test results have confirmed the validity of the proposed eddy-current AVS design and have demonstrated high acoustic sensitivity.
Related Concept Videos
Electronic Distance Measuring Instruments
Eddy Currents
Other major applications of eddy currents appear in metal detectors and the braking systems of trains and roller...
