Seminars

• Astrophysics and Cosmology Seminar

  Applications of Gravitational Lensing: Revealing the Structure of Quasars

  Carina Fian, Hctpa/Tau

  03 Mar 2021, 11:10 Sacta-Rashi Building for Physics (54), room 207

• Biological and soft-matter physics

  Growth laws for unicellular organisms from ribosome biogenesis

  Sarah Kostinski, School Of Chemistry, Tel-Aviv University

  04 Mar 2021, 12:10 ZOOM only - Meeting ID: 874 2021 0979

Biological and Soft Matter Physics

Nonlinear Dynamics and Biological Applications

Arik Yochelis

Biological systems show a plethora of fascinating self-organized behaviors that range from organ to cellular levels, such as spiral waves, pulses, synchronization, and steady states that are periodic in space. These non-equilibrium phenomena emerge through either spontaneous or forced symmetry breaking mechanisms. Employing nonlinear dynamics methods, we attempt to understand specific cases (localized waves in the inner ear) as well as gain general insights into the emergence of traveling waves with motivation taken from molecular motors, actin polymerization and cardiac system.

High-Energy Physics

Quantum gravity & quantun black holes

Ram Brustein

Are Einstein's equations and general relativity compatible with quantum mechanics? In spite of intense efforts over the last 40 years by some of the best physicists we still do not know the answer . I study the properties of black holes and other space-times with horizons to probe the laws of quantum gravity. Based on our recent research, our proposed answer is: Yes. The apparent incompatibilities between general relativity and quantum mechanics originate from the extreme approximation of treating spacetime as a strictly classical geometric object.

Seminars

• Astrophysics and Cosmology Seminar

  Applications of Gravitational Lensing: Revealing the Structure of Quasars

  Carina Fian, Hctpa/Tau

  03 Mar 2021, 11:10 Sacta-Rashi Building for Physics (54), room 207

• Biological and soft-matter physics

  Growth laws for unicellular organisms from ribosome biogenesis

  Sarah Kostinski, School Of Chemistry, Tel-Aviv University

  04 Mar 2021, 12:10 ZOOM only - Meeting ID: 874 2021 0979

Condensed Matter Experimental

Mechanical properties on the nm scale

Yishay Manassen

Strain map from Gd islands and Local young modulus of nanoparticles.

The scanning tunneling microscope is a device capable of observing an image with atomic resolution and is capable of observing physical phenomena on the atomic scale. In this study we are interested in the nm scale mechanical properties, normally studied macroscopically, which can vary in different locations on the surface. These properties are the stress and strain tensors, the elastic constants, the surface energy and stress. These values can be measured either using a external perturbation (the STM tip) or internal perturbation (a heteroepitaxial island, chemical reaction).

Astrophysics and Cosmology

Gravitational Lensing and High Redshift Galaxies

Adi Zitrin

Galaxy Cluster Abell 370 and its famous gravitational arcs, imaged with the Hubble Space Telescope.

Massive galaxy clusters bend light rays from background sources to form magnified, distorted, and multiple arcs. Using this Gravitational Lensing phenomenon, we can map the Dark Matter distribution of the lens, invisible otherwise. Thanks to the magnification power from lensing we can also access increasingly fainter and high-redshift (earlier) galaxies, and study the evolution of the first generation galaxies and the Reionization of the Universe.

Seminars

• Astrophysics and Cosmology Seminar

  Applications of Gravitational Lensing: Revealing the Structure of Quasars

  Carina Fian, Hctpa/Tau

  03 Mar 2021, 11:10 Sacta-Rashi Building for Physics (54), room 207

• Biological and soft-matter physics

  Growth laws for unicellular organisms from ribosome biogenesis

  Sarah Kostinski, School Of Chemistry, Tel-Aviv University

  04 Mar 2021, 12:10 ZOOM only - Meeting ID: 874 2021 0979

Condensed Matter Theory

Mesoscopics

Ora Entin-Wohlman

*** Molecular junctions and thermoelectricity: studying transport of electrons and of heat through single-molecule bridges (e.g. nano-tubes). Finding bounds on the thermoelectric efficiencies. *** Superconducting-insulator transition: studying the way the conductance of hybrid systems are modified as part of the sample goes superconducting. *** Persistent current in metalic rings: Superconducting fluctuations generate persistent currents around rings even above the superconduction temperature, which may be reduced by proximity to normal metals.

Atomic, Molecular and Optical Physics

Attosecond science and nanophotonics Lab

Eugene Frumker

*Tracing and control of electronic motion in atoms, molecules, and nanostructures in space and time (4D). Progress in lightwave electronics. *Table-top XUV and soft X-ray laser-like sources. Nano-scale spatial resolution to optical science of attosecond pulses. *New dynamic imaging modalities – significantly improved spatial/temporal resolution, new contrast imaging for lifescience and nanotechnology. *And much more…