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Years Active: 2006-2007
Title: John Matthews: Innovator in Scanning SQUID Microscopy
Introduction
John Matthews is a notable inventor based in Greenbelt, MD (US), recognized for his contributions to the field of scanning SQUID microscopy. With a total of 3 patents, Matthews has made significant advancements in imaging technology that enhance the detection of magnetic fields.
Latest Patents
One of his latest patents is the "Scanning SQUID microscope having position noise compensation." This invention aims to improve output imaging by utilizing a vertically adjustable housing that securely retains a SQUID loop or sensor. The scanning stage of this microscope supports a sample while moving it along a predetermined path, allowing for the detection of magnetic field information from specific portions of the sample. A position control processor processes this information to provide corresponding position noise data, establishing criteria for expected noise levels under various experimental conditions.
Another significant patent is the "High frequency scanning SQUID microscope and method of measuring high frequency magnetic fields." This innovative microscope employs a hysteretic SQUID detector and a pulsed sampling technique, extending the bandwidth of the SQUID microscope into the GHz region. This system can be integrated into a 4.2 scanning SQUID microscope for imaging chips at room temperature. By biasing the hysteretic SQUID with pulses of predetermined amplitude and adjusting the modulation flux, the system can effectively represent the magnetic field emanating from the sample under study.
Career Highlights
Throughout his career, John Matthews has worked with esteemed organizations such as the University System of Maryland and the National Security Agency. His work has significantly impacted the field of magnetic field measurement and imaging technology.
Collaborations
Matthews has collaborated with notable colleagues, including Frederick Charles Wellstood and Soun Pil Kwon, contributing to advancements in their shared field of expertise.
Conclusion
John Matthews stands out as an influential inventor in the realm of scanning SQUID microscopy, with his innovative patents paving the way for enhanced imaging techniques. His contributions continue to shape the future of magnetic field detection and measurement.