David Seidman is a Walter P. Murphy professor of materials science and engineering at Northwestern University, since 1996. He is a pioneer in the development and application of field-ion microscopy (FIM), atom-probe FIM and atom-probe tomography to a wide range of scientific and technological problems, which require spatial resolution at the subnanometer scale and chemical information at the same length scale. He received his Ph.D. degree from the University of Illinois at Urbana-Champaign, where he studied the kinetics of formation of vacancies in up-quenched gold: his advisor was Robert W. Balluffi. His current research interests are in atomistic mechanisms of phase-separation in multicomponent Ni-based superalloys, development of high-temperature (greater than 723 K) Al-based alloys, development of high-temperature Co-based alloys, high-strength tough-steels with good blast and projectile resistance, and the use of silicon nanowires for sensors. Seidman is a member of the National Academy of Engineering, a fellow of the American Academy of Arts & Sciences, American Association for the Advancement of Science, American Physical Society, ASM International, John Simon Guggenheim Memorial Foundation, Materials Research Society, TMS (Minerals•Metals•Materials). Gold Medal Award and Albert Sauveur Achievement Award of ASM International, David Turnbull Lecturer Award of the Materials Research Society, Alexander von Humboldt Stiftung Prize, Max Planck Research Prize.