Andrew G Ewing

Title: The Innovations of Andrew G Ewing

Introduction

Andrew G Ewing is a prominent inventor based in State College, PA (US). He has made significant contributions to the field of electrophoresis, holding a total of 5 patents. His work focuses on enhancing the efficiency and accuracy of electrochemical detection methods.

Latest Patents

One of Ewing's latest patents is titled "Real time monitoring of electroosmotic flow in capillary electrophoresis." This invention involves an electrophoretic separation apparatus that utilizes a capillary tube to facilitate the flow of solutes through a solvent. The apparatus includes a first power supply that applies a direct voltage separation potential, establishing an electrophoretic flow of the solute. A second power supply applies an alternating voltage, allowing for the direct measurement of electroosmotic flow by determining and subtracting DC and AC impedance values.

Another notable patent is the "Machine-accessible electrochemical detector for capillary electrophoresis." This invention features end-column detectors that utilize either a sensing microelectrode or optical fiber positioned at the end of the separation capillary. The design includes an alignment apparatus that simplifies the positioning of the sensing device, resulting in detectors that are sensitive, reliable, and easy to construct and operate.

Career Highlights

Ewing has had a distinguished career, contributing to various research initiatives. He has worked with the Penn State Research Foundation and Leland Stanford Junior University, where he has furthered his research in electrophoresis and electrochemical detection.

Collaborations

Throughout his career, Ewing has collaborated with notable colleagues, including Mark A Hayes and Richard Neil Zare. These collaborations have enriched his research and contributed to the advancement of his inventions.

Conclusion

Andrew G Ewing's innovative work in the field of electrophoresis has led to significant advancements in electrochemical detection methods. His patents reflect a commitment to improving scientific techniques and enhancing the accuracy of measurements in various applications.