On Monday July 6th, the nanoHUB will be intermittently unavailable due to scheduled maintenance. We apologize for any inconvenience this may cause. close
Professor of Physics
John Carroll University, Cleveland Ohio B.S. (Physics - Magna cum Laude) 1970; University of Chicago, Chicago, Illinois M.Sc. (Physics) 1972; University of Chicago, Chicago, Illinois Ph.D. (Physics) 1976
Research insterests include Scanning Tunneling Microscopy (STM) and Atomic Force Microscopy (AFM); nanometer-size clusters and cluster-assembled materials; electronic transport properties in nanowires; field emission; molecular electronics; nanoelectronics; and novel chem-bio sensing paradigms
Scanning probe microscopy has been the cornerstone of nanotechnology since the late 1980s. Scanning probe instruments allow the visualization and characterization of nanometer-scale objects with minimal sample preparation. The Hall Nanometrology Laboratory in the Birck Center is the home of a custom UHV scanning probe microscope system built around an Omicron STM and AFM. This instrument is primarily for atomic-scale imaging. The STM/AFM has been integrated into stainless steel chambers equipped with fast-entry load locks and a versatile sample preparation chamber which allows for thermal or ion gun cleaning of substrates, adlayer (either molecular or metals) deposition, and tip cleaning. The Hall Laboratory is a unique nanometrology laboratory designed and built to minimize unwanted building vibrations, maintain a constant temperature and shield equipment from stray EM fields.