Past Events

  • Physics Department Colloquium: "Cal-Bridge and CAMPARE/CHAMP: Engaging Underrepresented Students in Physics and Astronomy"

    David Rittenhouse Laboratory - A8

    Alex Rudolph (Cal Poly Pomona) hosted by: James Aguirre

    The level of participation by underrepresented minority (URM) and female students in physics and astronomy PhD programs is shamefully low (2-4% for URM v. 30% in the general population; 20% for women v. 50% in the general population). I will begin by discussing research into why these participation rates are so low for these groups, highlighting role the physics and general GRE tests play in suppressing diversity in our field, while providing little to no benefit in helping predict long-term success.

  • Physics Department Colloquium: Eye patches: The Evolution of Novel Soft Matter

    David Rittenhouse Laboratory - A8

    Alison Sweeney (U of Penn)

    Life on Earth constitutes the most sophisticated iterations in the known universe of what physicists classify as soft matter.  Research in my group focuses on learning the physical rules of soft matter self-assembly phenomena via the evolutionary processes by which they arose over Earth’s history.  In this view of life as soft matter, evolution, with its own formal rules and algorithms, governs the appearance and diversification of novel forms of soft matter.  The field of soft matter was until very recently restricted to analytical consideration of simpler systems like isotr

  • Department Colloquium: "Simulating the self-assembly of nano-puzzles"

    David Rittenhouse Laboratory, A8

    Daan Frenkel (Cambridge University) hosted by Tom Lubensky

    A holy grail of nano-technology is to create truly complex, multi-component structures by self-assembly. Most self-assembly has focused on the creation of "structural complexity." In my talk, I will discuss "Addressable Complexity": the creation of structures that contain hundreds or thousands of distinct building blocks that all must find their place in a 3D structure. Recent experiments have demonstrated the feasibility of making such structures. Simulation and theory yield surprising insights that can inform the design of novel structures and materials [1].

  • Rittenhouse Lecture: "Early Results from Juno's Exploration of Jupiter"

    David Rittenhouse Laboratory, A8

    Scott Bolton, Southwest Research Institute

    NASA's Juno mission to Jupiter launched in 2011 and arrived at Jupiter on July 4, 2016.  Juno's scientific objectives include the study of Jupiter's interior, atmosphere and magnetosphere with the goal of understanding Jupiter's origin, formation and evolution.  As the largest and most massive planet in our solar system, Jupiter offers unique insight in the history of our solar system and how planetary systems in general form and evolve.  Juno's multidisciplinary study of Jupiter constrains the interior structure and atmospheric composition, investigates Jupiter's de

  • Department Colloquium: "Results from the New Horizons Flyby of Pluto"

    David Rittenhouse Laboratory, A8

    Marc Buie (Southwest Research Institute) hosted by Mariangela Bernardi

    July 2015 saw the culmination of decades of work to get a detailed look at a distant and intriguing world.  As of late 2016, the transmission of all data from the encounter was completed and the project is now turning its attention to the upcoming extended mission flyby of 2014MU69 on 2019 Jan 1.  The encounter was crucial for pinning down seemingly simple quantities such as size and albedo but opened the door to much more in-depth studies of the origin and evolution of Pluto and its constraints on the history of our solar system.

  • Department Colloquium: "The Pope of Physics: Enrico Fermi and the Birth of the Atomic Age"

    David Rittenhouse Laboratory, A8

    Gino Segre (University of Pennsylvania) and Bettina Hoerlin

    Enrico Fermi was unique in a number of ways, including the staggering breadth of his research, from relativity theory and magnetohydrodynamics to instrument development. He was the only 20th century physicist to have attained the very heights of the profession as a theorist and experimentalist as well as the only one to be essentially self-taught. His 1938 Nobel Prize was picked up en route in his flight from fascist Italy with his Jewish wife and children to find a new life in America.

  • Department Colloquium: "The New Era of Gravitational-Wave Physics and Astrophysics"

    David Rittenhouse Laboratory, A8

    Alessandra Buonanno (MPI Munich) hosted by Justin Khoury

    The detection by LIGO of gravitational waves emitted by coalescing binary black holes heralded a new era in physics and astrophysics. I will review the theoretical work aimed at solving the two-body problem in General Relativity that has paved the way to observe such gravitational-wave signals and highlight the main implications of the discovery focusing on its astrophysical and fundamental physics aspects. I will also discuss the unique science that lies ahead of us with upcoming gravitational-wave observations.

  • Department Colloquium:"The Maps Inside Your Head"

    David Rittenhouse Laboratory, A8

    Vijay Balasubramanian (UPenn) hosted by: Joe Kroll

    How do our brains make sense of a complex and unpredictable world? In this talk, I will discuss a physicist's approach to the neural topography of information processing in the brain. First I will review the brain's architecture, and how neural circuits map out the sensory and cognitive worlds. Then I will describe how highly complex sensory and cognitive tasks are carried out by the cooperative action of many specialized neurons and circuits, each of which has a simple function. I will illustrate my remarks with one sensory example and one cognitive example.

  • Primakoff Lecture: From (Astro)particle Physics to Applications: The Role of Scientific Institutes for the Development of Society

    David Rittenhouse Laboratory, A8

    Rolf Heuer (CERN) Hosted by Joe Kroll

    With the start of the Large Hadron Collider (LHC) at CERN, particle physics entered a new era. The LHC project will provide a deeper understanding of the universe and the insights gained could change our view of the world.

  • Department Colloquium: "Perturbation and Control of Human Brain Network Dynamics"

    David Rittenhouse Laboratory, A8

    Danielle Bassett (UPenn), Hosted by: Andrea Liu

    The human brain is a complex organ characterized by heterogeneous patterns of interconnections. New non-invasive imaging techniques now allow for these patterns to be carefully and comprehensively mapped in individual humans, paving the way for a better understanding of how wiring supports our thought processes.