Past Events

  • Condensed Matter Seminar: "The Physics of Electron-Conducting Microbial Nanowires"

    Room A4, DRL

    Mark Tuominen , University of Massachusetts

    This talk will discuss the experimental investigations of “natural organic metals” -- nanowires produced from amino acids by a common soil bacteria, Geobacter sulfurreducens. These protein nanofilaments, pili, extend outside of the cell for long distances and tangle into a network. Electron conductivity is observed in bacterial biofilms, and also in networks of pili extracted from the bacteria.
  • Astrophysics and Cosmology Seminar

    DRL, A6

    Elisa Chisari, Princeton

  • High Energy Theory Seminar


    Simone Giombi (Princeton)

  • Condensed Matter Seminar: "Single-molecule force spectroscopy: Theory meets experiment"

    Room A4, DRL22

    Olga Dudko, U.C. San Diego

    Single-molecule biophysical tools are making it possible to measure the response of individual biomolecules to external force – in real time and with unprecedented resolution – revealing information that is typically lost when studied though traditional “bulk” methods. I will present a general analytical theory of force-induced molecular transitions. The theory is based on Kramers picture of diffusive barrier crossing and on a generalization of this picture to many dimensions.

  • High Energy Theory Seminar

    DRL 2N36

    Maria J. Rodriguez (Harvard)

  • High Energy Theory Seminar

    DRL 2N362

    Nishant Agarwal (CMU)

  • Condensed Matter Seminar: "Topological Edge States at a Tilt Boundary in Gated Multilayer Graphene"

    A4 DRL

    Eun-Ah Kim , Cornell University

    Despite much interest in engineering new topological surface (edge) states using structural defects, such topological surface states have not been observed yet. We show that recently imaged tilt boundaries in gated multilayer graphene should support topologically protected gapless edge states. We approach the problem from two perspectives: the microscopic perspective of a tight-binding model and an ab initio calculation on a bilayer, and the symmetry-protected topological (SPT) state perspective for a general multilayer.

  • Nano-Noses: Cyborg Devices for Detecting Molecules

    A.T. Charlie Johnson, World Cafe Live, 3025 Walnut Street

  • Dissertation Defense, Adam Roth

    Structure and Coarsening of Foams: Beyond Von Neumann's Law, Rm. 2C2 DRL

  • Advances in Biomedical Optics Seminar

    Donner Auditorium

    Roy Hamilton, Hospital of the University of Pennsylvania

    Optical Imaging of Noninvasive Brain Stimulation
    Roy Hamilton
    Assistant Professor of Neurology
    Hospital of the University of Pennsylvania