Past Events

  • Astro Seminar: "Simulating the Effect of Massive Neutrinos on Large Scale Structure"

    David Rittenhouse Laboratory, A4

    Simeon Bird (Johns Hopkins)

    The massive neutrino background makes up a component of the dark matter, and as such affects the growth of large-scale structure, such as galaxy clusters. This affords us an opportunity to measure the neutrino mass. However, to do this we must accurately and efficiently characterize how neutrinos affect structure growth. I will describe a new method for including massive neutrinos in N-body simulations which is uniquely accurate in the limit of small neutrino masses, and incurs no cost above that of the N-body simulation.

  • Special Energy Cluster Seminar: "Single-Molecule Sensors using Carbon Nanotube Electronics"

    Glandt Forum, 3rd floor Singh Center

    Delphine Bouilly, Columbia

    In many biological and optically-active materials, fundamental energy and charge transfer mechanisms occur at the molecular level. Individual molecules, however, are challenging to observe directly due to their small size, rapid fluctuations and complex interactions with their environment. My research focuses on the design and application of electronic single-molecule sensors, which are miniature electrical circuits capable to capture and probe individual molecules.


    David Rittenhouse Laboratory, A1

  • Department Colloquium: "The Event Horizon Telescope: Imaging and Time-Resolving a Black Hole"

    David Rittenhouse Laboratory, A8

    Shep Doeleman (MIT) Hosted by James Aguirre

    A convergence of high bandwidth radio instrumentation and Global mm and submm wavelength facilities are enabling assembly of the Event Horizon Telescope (EHT): a short-wavelength Very Long Baseline Interferometry

  • *Special Seminar*:"Control of Nanoparticle Self-assemblies using Distorted Liquid Crystals”

    LRSM, Reading Room

    Emmanuelle Lacaze (Institut de Nano-Sciences de Paris, Université Pierre et Marie Curie)

    Directed assembly of nanoparticles is a promising alternative for original nanoparticle organizations. New kinds of optical properties are expected when semi-conductive or metallic nanoparticles are concerned.  Using liquid crystal matrices oriented by their interfaces, it is possible to induce anisotropic nanoparticle organizations. We can then investigate the influence of these matrices on the optical properties of the nanoparticles.

  • ABO Seminars: "Label-Free Intraoperative Optical Imaging of Breast Tumor Margins and the Microenvironment"

    Donner Building 3400 Spruce Street Donner Auditorium, Basement *Pizza served at 11:45am*

    Stephen Boppart (University of Illinois Urbana-Champaign)

  • Condensed Matter seminar: "Managing Energy Far From Equilibrium"

    David Rittenhouse Laboratory, A4

    Carlos Ortiz, University of Pennsylvania

    Meaningful advances in energy generation, utilization, or storage require exquisite control and optimization of the transport properties of materials far-from-thermal-equilibrium.  Whether concerned with ion-transport through a battery, or molecule extraction through porous rock, or transporting granular matter, a central issue is that of designing materials and flow geometries that give use spatiotemporal control of the mobility of interacting particles.

  • Dissertation Defense: "Studying the Large-Scale Structure and Interstellar Medium of Galaxies During the Epochs of Peak Cosmic Star Formation and Reionization with Infrared Fine Structure Lines"

    David Rittenhouse Laboratory, 3W2

    Bade Uzgil (UPenn)

  • Department Colloquium: "Spotting the Elusive Majorana Under the Microscope"

    DRL A8

    Ali Yazdani (Princeton University) Hosted by Eleni Katifori

    Topological superconductors are a distinct form of matter that is predicted to host boundary Majorana fermions. The search for Majorana quasi-particles in condensed matter systems is motivated in part by their potential use as topological qubits to perform fault-tolerant computation aided by their non-Abelian characteristics. Recently, we have proposed a new patform for the realization of Majorana fermions in condensed matter, based on chains of magnetic atoms on the surface of a superconductor.
  • Dissertation Defense: "Theoretical Studies of Cosmic Acceleration"

    DRL 4E19

    James Stokes (UPenn)