Magnetic Sensors for Detection
Abstract
In this program, we propose investigations of ME laminate sensors using the modulation/demodulation detection method. We will determine the mechanism of ME nonlinearity under E-field modulation, and optimize the relevant nonlinear ME coefficient by use of geometrical and materials parameters. Optimization will include the development of self-biased ME laminates for E-field modulation, in order to maximize the transfer function without the need of a required DC magnetic bias. In particular, we will focus on the promising potential for rejection of mechanical/vibrational noise using this E-field modulated mode, compare their noise floors with respect to that of the Hfield modulated one, and understand the limiting noise sources that set the equivalent magnetic noise floor. We will also focus on developing triaxial ME sensors and gradiometers based upon Efield modulation, and subsequently perform an investigation of the relative merits of using triaxial versus total field magnetometers. Gradiometric arrangements of magnetic sensors that are E-field modulated will be developed and studied.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Aug 12, 2016
- Source ID
- N000141512457
Entities
People
- Dwight D. Wiehland
Organizations
- Office of Naval Research
- United States Navy
- Virginia Tech