Publications associated with Spin Electronics

Versatile radiofrequency sensor

SENSOR ACTUAT A-PHYS 91 (2001) 39-41

RP Borges, M Bari, JMD Coey, JF Gregg, M Thornton, W Allen

A miniature, monolithic radiofrequency sensor operating with MESFET circuitry in the GHz range is able to detect a wide variety of magnetic, metallic and dielectric materials via the losses induced in the sensitive volume around a coil. Application of the sensor to detect plastic and metal gearwheels and falling liquid drops is illustrated; the signal-to-noise ratio falls off as the inverse distance from the coil to the liquid drop. (C) 2001 Elsevier Science B.V. All rights reserved.

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