The Penn State Research Foundation

Government of the United States of America, as Represented by the Secretary of Commerce

Patrick M Lenahan

Corey Cochrane

Kin P Cheung

Jason T Ryan

Jason Campbell

A sensing apparatus for detecting and determining the magnitude of a static magnetic field has a first set of coils capable of producing a sweeping, quasi static, magnetic field when driven by a direct current and a second set of coils, for magnetic field modulation, positioned between the first set of coils capable of producing a low-frequency (audio), oscillating magnetic field when driven by an oscillating current. The magnetic fields induce a current through the semiconductor device which sampled to identify changes as a function of sweeping, quasi static magnetic field. To create an apparatus for detecting and identifying atomic scale defects in fully processed devices, a radio frequency circuit with a resonant component is added which provides an oscillating electromagnetic field in a direction perpendicular to that of the static magnetic field produced by the first set of coils.

Zero- and low-field transport detection system

An electron spin resonance spectrometer includes a bridge to transmit an excitation frequency and to receive a signal frequency; a probe electrically connected to the bridge and comprising: a first conductor in electrical communication with the bridge to transmit the signal frequency to the bridge; a shorting member electrically connected to the first conductor to transmit the excitation frequency to a sample, to produce the signal frequency, and to transmit the signal frequency to the first conductor; and a second conductor electrically connected to the shorting member; and a magnet disposed proximate to the probe.

Electron spin resonance spectrometer and method for using same

This method of adaptive signal averaging is used to enhance the signal to noise ratio of magnetic resonance and other analytical measurements which involve repeatable signals partially or completely obscured by noise in a single measurement at a rate much faster than that observed with conventional signal averaging. This technique expedites the signal averaging process because it filters each individual scan in real time with an adaptive algorithm and then averages them separately to provide an averaged filtered signal with less noise. This technique is particularly useful for any type of continuous wave magnetic resonance experiment or any other noisy measurement where signal averaging is utilized.

Growing community of inventors

Boalsburg, PA, United States of America

Patrick M Lenahan