Barry T O'Connell

Title: Barry T O'Connell: Innovator in Giant Magnetoresistive Technology

Introduction

Barry T O'Connell is a notable inventor based in Worcester, MA (US). He has made significant contributions to the field of sensor technology, particularly through his innovative work on giant magnetoresistive sensors. His expertise and inventions have paved the way for advancements in various applications.

Latest Patents

Barry T O'Connell holds a patent for a "Giant magnetoresistive resistor and sensor apparatus and method." This invention describes a giant magnetoresistive sensor apparatus that enhances multilayer quality, hysteresis, linearity, and sensitivity. The multilayer structure incorporates NiFeCr as buffer and cap layers. The design features a serpentine structure for the sensing resistor, which is tapered and elongated to minimize hysteresis and improve linearity. The sensor is configured in a Wheatstone bridge, where two resistors are shielded by thick NiFe layers, while the other two sensing resistors remain unshielded to external signal fields. This innovative design not only shields the influence of external fields but also acts as magnetic flux concentrators, amplifying the external field on the unshielded resistors. The bridge output effectively reflects the resistance change of the two unshielded sensing resistors.

Career Highlights

Barry T O'Connell is associated with Advanced Microsensors, Inc., where he continues to develop cutting-edge sensor technologies. His work has been instrumental in advancing the capabilities of magnetoresistive sensors, making them more efficient and reliable for various applications.

Collaborations

Throughout his career, Barry has collaborated with talented individuals such as Zhenghong Qian and Gunther Baubock. These collaborations have contributed to the success of his projects and the advancement of sensor technology.

Conclusion

Barry T O'Connell is a distinguished inventor whose work in giant magnetoresistive technology has significantly impacted the field of sensor development. His innovative designs and collaborations continue to drive advancements in this important area of research.