Very Dense Magnetic Sensor Arrays for Precision Measurement and Detection
NVE CORP EDEN PRAIRIE MN
Pagination or Media Count:
Very dense arrays of micron-sized magnetic sensors combined with micron sensor spacing on a single chip can detect very small magnetic fields with high spatial resolution. These changes in magnetic fields are in the milligauss range, approximately 500 times less than Earths field, and are required for magnetic biosensors, nondestructive testinspectionevaluation, precision position measurement, document validation and magnetic imaging applications. By using a silicon substrate for the sensor elements, the signal conditioning and logic capability of integrated circuits can be utilized to reduce size, weight and power while optimizing system performance when compared to a collection of sensors supplying raw signals to a processor. This integrated technique, also, reduces the effect of noise and greatly simplifies the sensorsignal processing interface. Applications of these very dense and sensitive micro-arrays will be discussed during the presentation including its possible implications for Homeland Security.
- Magnetic and Electric Field Detection and Detectors