Events Archive

Biophysics seminar: Marc Gershow, New York University| TBD
Mon, May 2, 2022, 12:30 pm12:30 pm
Speaker
A free lecture open to the public.
Biophysics Seminar: Arseny Finkelstein, Tel-Aviv University| TBA
Sun, May 1, 2022, 12:30 pm1:30 pm
Speaker
Free and open to the public
Biophysics seminar: Andrea Liu, University of Pennsylvania| How Materials Can Learn
Mon, Apr 25, 2022, 12:30 pm12:30 pm

How does learning occur? Neural networks learn via optimization, where a loss function is minimized by a computer to achieve the desired result. But physical networks such as mechanical spring networks or flow networks have no central processor so they cannot minimize such a loss function. An alternative is to encode local rules into those…

Speaker
A free lecture open to the public.
Biophysics seminar: David Wolpert, Santa Fe Institute| Stochastic Thermodynamics of Distributed Systems
Mon, Apr 18, 2022, 12:30 pm12:30 pm

The new field of stochastic thermodynamics allows us to analyze the thermodynamic behavior of dynamic systems arbitrarily far from thermal equilibrium, and has produced many powerful theorems concerning phenomena completely absent in traditional statistical physics. However, to date stochastic thermodynamics has (mostly) been applied to systems…

Speaker
A free lecture open to the public.
Biophysics Seminar: Gijsje Koenderink, Delft University of Technology|Cytoskeletal crosstalk in cell shape and mechanics|Zoom
Mon, Apr 11, 2022, 12:30 pm12:30 pm

Mechanical stability and shape changes of cells are determined by the dynamic interplay of four distinct cytoskeletal networks, made of actin filaments, microtubules, intermediate filaments and septins. These four filamentous systems contribute different structural and dynamical properties, enabling specific cellular…

Speaker
A free lecture open to the public.
Biophysics seminar: Sarah L. Keller, University of Washington| Phase-separating membranes of hungry yeast are tiny, living thermostats
Mon, Apr 4, 2022, 12:30 pm12:30 pm

Liquid-liquid phase separation of cell membranes exemplifies a biological system leveraging a physical concept to achieve a chemical end. Here, we show that yeast actively tune the transition temperature of their vacuole membranes to be close to the yeast's growth temperature, which implies that the membrane's proximity to the miscibility…

Speaker
A free lecture open to the public.
Biophysics Seminar: Arnold Mathijssen, University of Pennsylvania|Transport and delivery by active droplets and artificial microtubules
Mon, Mar 28, 2022, 12:30 pm12:30 pm

Understanding the physics of living systems allows us to design new materials that are active and adaptive, akin to cells and tissues. Conversely, these active matter systems can reveal fundamental principles in physics and biology. In this talk, I will discuss three systems that feature this synergy, ranging from the molecular to the…

Speaker
A free lecture open to the public.
Canceled and will be re-scheduled. Biophysics Seminar: Na Ji| UC Berkeley| Imaging the brain at high spatiotemporal resolution
Mon, Mar 21, 2022, 12:30 pm12:30 pm

To understand computation in the brain, one needs to understand the input-output relationships for neural circuits and the anatomical and functional properties of individual neurons therein. Optical microscopy has emerged as an ideal tool in this quest, as it is capable of recording the activity of neurons distributed over millimeter dimensions…

Speaker
A free lecture open to the public.
Biophysics Seminar: Madhav Mani, Northwestern University| A Statistical (Physics) view of Organismal Development
Mon, Feb 28, 2022, 12:30 pm12:30 pm

After a century of biochemical and genetic onslaught on the embryo we are left with an inexhaustive parts list with an increasingly baroque logic. How do we begin to assemble complex living systems from knowledge of the parts list? In this talk I will attempt to pursue a statistical (physics) approach to discerning the design principles that…

Speaker
A free lecture open to the public.
Virtual Biophysics Seminar: Zvonimir Dogic, UCSB, Brandeis|Sculpting liquid interfaces with active stresses
Mon, Feb 7, 2022, 12:30 pm12:30 pm

Controlling interfacial structure and dynamics of phase separating fluid mixtures is key to creating diverse functional materials. Traditionally, this is accomplished by controlling interface chemistry, through the presence of surface-modifying amphiphilic agents. Using a phase separating mixture of active and passive fluids, we study how…

Speaker
A free lecture open to the public.
Biophysics Seminar: Chris Wiggins, Columbia University|TBD|Zoom
Mon, Dec 13, 2021, 1:15 pm1:15 pm
Speaker
A free lecture open to the public.
Biophysics Seminar: Chris Wiggins, Columbia University| Just do the best you can: statistical physics approaches to reinforcement learning
Mon, Dec 13, 2021, 1:15 pm1:15 pm

The most celebrated corners of machine learning over the past decades are those successful at predicting - e.g., spam classification, medical diagnoses, or cat faces. But machine learning as actually used in practice is commonly prescriptive rather than predictive: decisions must be made in order to maximize a reward. The…

Speaker
A free lecture open to the public.
Biophysics Seminar: Andrew Gordus, Johns Hopkins University| Untangling the web of behaviors used in spider orb-weaving
Mon, Dec 6, 2021, 12:30 pm12:30 pm

Many innate behaviors are the result of multiple sensorimotor programs that are dynamically coordinated to produce higher-order behaviors such as courtship or architecture. Extended phenotypes such as architecture are especially useful for ethological study because the structure itself is a physical record of behavioral intent. A particularly…

Speaker
A free lecture open to the public.
Biophysics Seminar: Jeff Gore, Massachusetts Institute of Technology| Emergent phases of ecological diversity and dynamics mapped in microcosms
Mon, Nov 15, 2021, 12:30 pm12:30 pm

Natural ecological communities display striking features, such as high biodiversity and a wide range of dynamics, that have been difficult to explain in a unified framework. Using experimental bacterial microcosms, we have performed the first direct test of recent theory predicting that simple aggregate parameters…

Speaker
A free lecture open to the public.
To Be Re-scheduled-Biophysics Seminar: Danielle Bassett, University of Pennsylvania|TBD
Mon, Nov 8, 2021, 12:30 pm12:30 pm
Speaker
A free lecture open to the public.
Biophysics Seminar: Alison Sweeney, Yale University| The Physical Design of Optimum Solar Resource Utilization in Giant Clams
Mon, Nov 1, 2021, 12:30 pm12:30 pm

Photosynthesis presents a paradox of solar energy: the maximum quantum efficiency of photosystem II likely surpasses that of any engineered system, but in environments with high solar flux, photosynthetic organisms are famously wasteful and resource inefficient. For example, even in agricultural systems bred for maximum resource efficiency such…

Speaker
A free lecture open to the public.
Biophysics Seminar: Jeanne Stachowiak|The University of Texas at Austin|Disordered protein networks as synergistic drivers of membrane traffic
Mon, Oct 25, 2021, 12:30 pm12:30 pm

Membrane curvature is required for many cellular processes, from assembly of highly curved trafficking vesicles to extension of needle-like filopodia. Consequently, defects in membrane curvature play a role in most human diseases, including altered recycling of receptors in cancer and diabetes, targeting of filopodia by pathogens, and hijacking…

Speaker
A free lecture open to the public.
Biophysics Seminar: Louise Jawerth, Leiden University| TBD|Zoom
Mon, Sep 27, 2021, 12:30 pm12:30 pm
Speaker
A free lecture open to the public.
Biophysics Seminar: Andrej Kosmrlj| Princeton University: Pattern formation in biological systems via mechanical instabilities and phase separation
Mon, Sep 20, 2021, 12:15 pm12:15 pm

Pattern formation is ubiquitous in biological systems. While pattern formations are often associated with Turing-like reaction-diffusion systems, biology also exploits many other mechanisms such as mechanical instabilities and phase separation. In this talk, I will discuss how mechanical instabilities cause the wrinkling of bacterial biofilms…

Speaker
A free lecture open to the public.
Biophysics: Welcome lunch
Mon, Sep 13, 2021, 12:15 pm12:15 pm
Speaker
A free lecture open to the public.