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Faculty of Physics

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News

07.03.2019 Dr. Ofer Firstenberg has been awarded the 2019 Krill prize

10.01.2019 Prof. Victor Malka Awarded the Alfven Prize from European Physical Society (EPS)

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TOUCHING SOMETHING
NO ONE FOUND

THE FACULTY

Departments

  • Department of Particle Physics and Astrophysics
  • Department of Physics of Complex Systems
  • Department of Condensed Matter Physics
  • Department of Physics Core Facilities

 

Centers and Institutes

The Andre' Deloro Institute for Space and Optics Research

The Center for Experimental Physics

The Crown Photonics Center

The Gruber Center for Quantum Electronics

The Joseph H. and Belle R. Braun Center for Submicron Research

The Maurice and Gabriela Goldschleger Center for Nanophysics

The Nella and Leon Benoziyo Center for Astrophysics

The Nella and Leon Benoziyo Center for High Energy Physics

Schwartz/Reizmann Institute for Theoretical Physics

The Nella and Leon Benoziyo Center for Astrophysics

The Andre' Deloro Institute for Space and Optics Research

Schwartz/Reizmann Institute for Theoretical Physics

Clore Center for Biological Physics

Center for Quantum Science and Technology

Upcoming events

Thu
28 Mar
Colloquium

Towards a Periodic Table Topological Materials

Andrei bernevig
Colloquium Towards a Periodic Table Topological Materials Andrei bernevig Edna and K.B. Weissman Building of Physical Sciences
Room Auditorium 11:15 11:00 – coffee, tea, and more In the past few years the field of topological materials has uncovered many materials which have topological bands: bands which cannot be continuable to a trivial, “atomic” limit, and which are characterized by an integer topological index. We will review the progress in the field and the new types of topological behavior that is expected from the many predictions in the field. We will also show how, using a new theory called Topological Quantum Chemistry, thousands of new topological materials can be predicted, classified and discovered. The result is that- so far - out of 30000 materials investigated - at least 30 percent of all materials in nature can be classified as topological. One ultimately aims for a full classification of topological materials, available on database websites such as www.topologicalquantumchemistry.com
Sun
31 Mar
Seminars

Geometry, defects and motion in active matter

Luca Giomi
Seminars Geometry, defects and motion in active matter Luca Giomi Edna and K.B. Weissman Building of Physical Sciences
Room Drory Auditorium 13:00 The paradigm of “active matter” has had notable successes over the past decade in describing self-organization in a surprisingly broad class of biological and bio-inspired systems: from flocks of starlings to robots, down to bacterial colonies, motile colloids and the cell cytoskeleton. Active systems are generic non-equilibrium assemblies of anisotropic components that are able to convert stored or ambient energy into motion. In this talk, I will discuss some recent theoretical and experimental work on active nematic liquid crystals confined on two-dimensional curved interfaces and highlight how the geometrical and topological structure of the environment can substantially affect collective motion in active materials, leading to spectacular life-like functionalities.
Thu
04 Apr
Colloquium

Physics Colloquium

Philip Walter
Colloquium Physics Colloquium Philip Walter Edna and K.B. Weissman Building of Physical Sciences
Room Auditorium 11:15 TBA
Mon
08 Apr
Seminars

Emergence and stability of a Brownian motor

Alex Feigel
Seminars Emergence and stability of a Brownian motor Alex Feigel Edna and K.B. Weissman Building of Physical Sciences
Room Room A 14:15 A Brownian motor rectifies thermal noise and creates useful work. Here we address how this machine can emerge without predefined energy minimum in a system out of thermal equilibrium. Intuitively, Brownian motor as any artificial or biological machine should degrade with time. I will show that on contrary, a system with multiple degrees of freedom out of thermal equilibrium can be stable at a state that generates useful work. It is demonstrated with the help of ab initio analysis of a modified Feynman-Smoluchowski ratchet with two degrees of freedom. Out of thermal equilibrium, an environment imposes effective mechanical forces on nano-fabricated devices as well as on microscopic chemical or biological systems. Thus out of thermal equilibrium environment can enforce a specific steady state on the system by creating effective potentials in otherwise homogeneous configuration space. I present an ab initio path from the elastic scattering of a single gas particle by a mechanical system to the transition rate probability between the states of the system with multiple degrees of freedom, together with the corresponding Masters-Boltzmann equation and the average velocities of the system’s degrees of freedom as functions of the macroscopic parameters of the out-of-equilibrium environment. It results in Onsager relations that include the influence of the different degrees of freedom on each other. An interesting finding is that some of these forces persist even in a single temperature environment if the thermodynamic limit does not hold. In addition, the spatial asymmetry of the system’s stable state, together with the corresponding directed motion, may possess preferred chiral symmetry.
Thu
18 Apr
Colloquium

Physics Colloquium

Federica Petricca
Colloquium Physics Colloquium Federica Petricca Edna and K.B. Weissman Building of Physical Sciences
Room Auditorium 11:15 11:00 – coffee, tea, and more TBA
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Weizmann Institute of Science | Contact: hadar.lappin@weizmann.ac.il | Last Updated: Tuesday, March 26, 2019 - 02:13