Two positions are available immediately at the University of California, Berkeley to study the environmental impact and toxicity of nanowires. Ph.D. must have been received recently. The first position will work on a collaborative study with Dr. Ben Gilbert at LBNL to investigate nanowire aggregation, oxidation and dissolution in aqueous media to determine the physicochemical properties affecting their toxicity. The applicant should have a PhD in chemistry, biogeochemistry, environmental science or related area and a record of independent experimental work with analytical experimental techniques. Experience in aqueous chemical methods, synchrotron x-ray spectroscopy and spectromicroscopy or geochemical modeling would be of benefit. The second position will be a collaborative effort with Dr. Frank Chen at LBNL to study nanowire surface modification and effects on biological system. The applicant will identify biomarkers for nanowire exposure to in vitro cultured primary cells using high-content screening assays involving optical and high resolution spectral methods for multiplexed detection and characterization of nano-bio interactions. The applicant should have a Ph.D. in molecular biology or related area. Send CV to Dr. Chris Vulpe (vulpe@berkeley.edu), Dept. of Nutritional Sciences and Toxicology, Univ. of California, Berkeley, Ca 94720. Salary range: $35,400-39,636. Application deadline is November 9, 2009.