Past Events

  • Penn I-Corps Site Summer Start-Up Accelerator Featuring Professore A. T. Charlie Johnson

    World Cafe Live Upstairs

    Professor Charlie Johnson and Alan Greenberger, Deputy Mayor for Economic Development and Director of Commerce, City of Philadelphia

    Launch Event

    • The Penn I-Corps Site summer accelerator offers 30 teams
    • Education, mentorship, and funding to develop startup ideas.
    • Faculty, students, and local entrepreneurs are welcome.


    More info:  

  • Special Seminar: "New Views on Iron Superconductivity: From a Mott Insulator’s Perspective"

    DRL Faculty Lounge

    Byron Freelon, M.I.T.

    Seeking to understand the nature of high-temperature superconductivity (HTSC) in iron-based materials, we discuss a new class of compounds in which unconventional superconductivity may occur.  When first discovered in 2008, superconductivity in iron-containing materials was thought to manifest by charge doping materials with metallic normal states.  By 2011, 

  • Astro Seminar: "Circumstellar Disk Composition and Evolution"

    David Rittenhouse Laboratory A6

    Alycia Weinberger (Carnegie Institution)

    Abstract:  The vast diversity of planetary systems arises from formation
    processes within circumstellar disks. These disks start out gas rich and end
    full of planets and some remnant debris dust. I will concentrate on stars in
    nearby young stellar associations and show how multi-wavelength imaging of
    their disks can reveal their compositions and dynamical states. I will
    highlight recent results with the Hubble Space Telescope and Magellan
    Adaptive Optics that both reveal the disks in amazing detail and hint at

  • Condensed Matter seminar: "Low-Dimensional Properties of Atomically-Thin Materials and Systems"

    DRL A4

    Douglas Strachan, University of Kentucky

    Atomically-thin materials represent the thinnest possible components of future device applications with extreme reduction in size scales. While tremendous progress has recently been made in understanding the large-scale properties of atomically-thin materials, the low-dimensional aspects, although critical to the smallest device sizes, have received comparatively much less attention.

  • Dissertation Defense:"Bulges and Disks in the Nearby Universe:Applications to Evolution and Formation of Galaxies"

    David Rittenhouse Laboratory, 4E19

    Alan Meert, University of Pennsylvania

  • Astro Seminar: CDM's Most Severe Small-scale Problem: The Ubiquity of Co-orbiting Satellite Galaxy Planes

    David Rittenhouse Laboratory A6

    Marcel Pawlowski (Case Western)

    Comparisons of observed satellite galaxies with CDM
    simulations have revealed numerous 'small-scale' problems. While the
    missing-satellites, the core-cusp and potentially even the
    too-big-to-fail problems might be solved by invoking baryonic
    processes such as feedback not incorporated in the initial
    simulations, the problem I will present lacks a viable solution in
    the CDM framework and became increasingly severe in recent years.
    The satellites of the Milky Way and of the Andromeda galaxy

  • Dissertation Defense:"Encoding of Ultrasonic Communication Signals in Rat Auditory Cortex"

    David Rittenhouse Laboratory, 3W2

    Isaa Carruthers, University of Pennsylvaniac

  • Department Colloquium: Einstein and Quantum Mechanics: It’s Not What You Think

    David Rittenhouse Laboratory A8 Refreshments available in DRL 2nd floor Faculty Lounge @ 3:30pm

    Douglas Stone, Yale

    Einstein is well known for his rejection of quantum mechanics in the form it emerged from the work of Heisenberg, Born and Schrodinger in 1926.  Much less appreciated are the many seminal contributions he made to quantum theory prior to his final scientific verdict: that the theory was at best incomplete.  In this talk I present an overview of Einstein’s many conceptual breakthroughs and place them in historical context.  I argue that Einstein, much more than Planck, introduced the concept of quantization of energy in atomic mechanics.

  • Advances in Biomedical Optics Seminar: "Optogenetic Tools for Controlling Biological Circuits"

    Donner Auditorium, Basement Donner Building- 3400 Spruce St.

    Professor Brian Chow (University of Pennsylvania)

    *Pizza to be served @ 11:45A* 

  • Condensed Matter Seminar: "Spin Fluctuations and Entanglement"

    DRL A4

    Ari Turner, Johns Hopkins University

    I will compare the effects of quantum and thermal fluctuations in a
    spin chain by calculating the probability distribution for spin
    fluctuations in a segment.

    The calculation will use the concept of an "entanglement Hamiltonian."
    The entanglement Hamiltonian can be used to identify topological phases,
    but I will show that it is helpful for long-wavelength correlations
    as well as topological ones.

    The entanglement Hamiltonian is an imaginary system that
    describes the correlations of the ground state.  It cannot be measured