Professor, Arizona State University
I am a Professor in the Department of Chemistry and Biochemistry at Arizona State University. My expertise is in microanalysis of involatile materials, both “hard” (minerals, semiconductors, metals) and “soft” (biomaterials) using secondary ion mass spectrometry (SIMS). The ASU SIMS facilities include two Cameca instruments, one of which (NanoSIMS 50L) will be used in the NASA work. This instrument can obtain SIMS images with < 50 nm spatial resolution. The Williams lab also has an imaging time-of-flight secondary ion mass spectrometer used for novel bioimaging applications.