High-sensitivity magnetoelectric laminate for passive
This technology is a layered material sandwich that converts magnetic fields into electrical signals (and vice versa) with exceptional efficiency. It combines piezoelectric fibers — which generate electricity when mechanically stressed — with special high-permeability metal alloys that physically deform in the presence of a magnetic field. When stacked and bonded in a specific arrangement, the magnetic deformation of one layer mechanically squeezes the piezoelectric layer, producing an electrical output far larger than prior designs. The key innovation is the combination of high-permeability alloy selection, fiber orientation, and interdigitated electrode poling that together achieve what the inventors call 'colossal, near-ideal' magnetoelectric coupling.
What you could build
A highly sensitive magnetic field sensor or low-frequency signal transducer that requires no power source to detect magnetic fields, suitable for buyers in defense electronics, medical imaging (e.g., magnetocardiography), and industrial non-destructive testing equipment.
Who in Virginia should care
Defense contractors and naval systems integrators with Virginia presence — such as those in the Hampton Roads or Northern Virginia corridors — working on low-power magnetic anomaly detection or submarine-related sensing would find this relevant.
Readiness: Lab validated
Concept — described but not yet demonstrated. Lab validated — supported by experimental results in the patent. Prototype likely — the text describes a built, working embodiment.
Readiness is inferred from the patent text, not from a lab visit.
The record
- Inventors
- Dwight Viehland, Shuxiang Dong, Jie-Fang Li, Junyi Zhai
- Granted
- August 10, 2010
- Status
- Granted patent
- Patent number
- 7771846
Ready to talk?
Virginia Tech Intellectual Properties handles licensing for this technology.
Prosim summaries are generated from public patent text and are not legal advice.