Sensor devices comprising field-structured composites
US6194769A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 27, 1999 |
| Grant date | Feb 27, 2001 |
| Priority date | — |
| Expiry date | May 27, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10F77/12
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A new class of sensor devices comprising field-structured conducting composites comprising a textured distribution of conducting magnetic particles is disclosed. The conducting properties of such field-structured materials can be precisely controlled during fabrication so as to exhibit a large change in electrical conductivity when subject to any environmental influence which changes the relative volume fraction. Influences which can be so detected include stress, strain, shear, temperature change, humidity, magnetic field, electromagnetic radiation, and the presence or absence of certain chemicals. This behavior can be made the basis for a wide variety of sensor devices.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.