received his undergraduate physics degree from Case Western Reserve University (Cleveland, Ohio), and his physics Ph.D. from U. C. Berkeley.
He has worked for a number of instrumentation companies such as AMRAY, KLA-Tencor, and FEI, where he worked on imaging systems, detectors, and electron optics. He was one of the founding scientists of the startup company, ALIS, where he worked to mature the gas field ion source (GFIS) to a point where it was commercially viable. This technology became the ion source for the original ORION Helium Ion Microscope (HIM) instruments. Acquired by Zeiss in 2006, the product has diversified to be a versatile instrument with many nanofabrication and analysis capabilities.
Presently, John serves as chief scientist for business development and “technology evangelist” at Carl Zeiss in Peabody, Massachusetts. John has over 30 journal publications, and is named in over 100 patents around the globe.