People by Discipline

Name	Discipline	Category	Phone	Office
Katz Nadav	Atomic, Molecular and Optical Physics	Faculty	02 6584 133	Kaplun 3
Khodas Maxim	Condensed Matter Physics	Faculty	02 6585 239	Danciger B 211
Kirscher Johannes	Nuclear Hadronic and Few-Body Physics	Post-Docs		Ross 1C
Kirsh Naftali	Atomic, Molecular and Optical Physics	Graduate Students	02 6586 745	Kaplun Bldg.
Kol Barak	High Energy Physics	Faculty	02 6584 929	Kaplun 210
Kolinski John	Nonlinear	Post-Docs	02 6586 104	Levin 17
Korenblit Simcha	Atomic, Molecular and Optical Physics	Adjunct Scientists	02 5494 681	Rothberg A111
Kostinski Sarah	Atomic, Molecular and Optical Physics	Post-Docs	02 6584 648	Danciger B 208
Kramer Eric David	High Energy Physics	Post-Docs		Ross -2 1D
Krief Menahem	Nuclear Hadronic and Few-Body Physics	Graduate Students		Popick Bldg.

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Upcoming Events

Today

Semester start
- End date: Sunday, May 5th
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Tuesday, May 7th

Astrolunch: Anna Lisa Varri
- Start time: 12:30pm
- End date: Tuesday, May 7th
- End time: 01:30pm
- Speaker: Anna Lisa Varri (University of Edinburgh) https://alvarri.com/Title: Rotating stellar systems and their black holesAbstract: The study of self-gravitating spheroidal rotating bodies is a classical fluid dynamics problem with a distinguished history, yet its kinetic counterpart has rarely been explored. As an example, I will present a family of self-consistent kinetic equilibria describing uniformly rotating, axisymmetric quasi-isothermal stellar systems. Such equilibria define a singular perturbation Vlasov-Poisson problem with a free boundary which can be approached by means of an asymptotic expansion based on the rotation strength parameter. I will then illustrate an extension to the case of self-consistent equilibria with a central black hole. Explicit asymptotic results are obtained over three nested regimes surrounding the sharp transition between equilibria dominated by the mass of the host stellar system or by the mass of the central black hole. I will conclude by discussing the astrophysical implications of these results for current multi-messanger explorations of black hole demographics. Contact: Zhaozhou
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Wednesday, May 8th

Bio Physics Seminar: "Chiral life and the electron spin"
- Start time: 10:00am
- End date: Wednesday, May 8th
- End time: 11:30am
- Lecturer: Yossi Paltiel, HUJI Abstract:Living organisms rely on chiral molecules, such as nucleic acids and proteins. A chiral molecule is not superimposable on its mirror image, also known as its enantiomer, just like our right hand cannot be superimposed on our left hand. Organisms contain only one enantiomeric form of a molecule, a selectivity that has prevailed through evolution. The chiral induced spin selectivity (CISS) effect studied by us [1], can explain why enantiomeric purity might provide an advantage in biology [2]. CISS is an electronic phenomenon in which electron transmission through chiral molecules depends on the direction of the electron spin, a quantum mechanical property associated with its magnetic moment. Thus, charge displacement and transmission in chiral molecules generates a spin-polarized electron distribution. This effect: enhance electron transfer in proteins, enable nano metric charge separation, and explain biorecognition [3].The effect also explains the high efficiency of multiple electrons process in biology (light harvesting and respiration). This understanding can be utilized to increase the employment of green energy by enhancing the efficiency and selectivity of the production process. Thus, improving in a significant way the efficiency of electrolyzers, fuel cells, batteries, and solar cells [4].
  1. Ron Naaman, Yossi Paltiel, David H. Waldeck; Chiral molecules and the electron spin; Nature Review Chemistry3, 250–260 (2019) DOI: 10.1038/s41570-019-0087-1 (2019).
  2. K. B. Ghosh, O. Ben Dor, F. Tassinari, E. Capua, S. Yochelis, A. Capua, S.-H. Yang, S. S. P. Parkin, S. Sarkar, L. Kronik, L. T. Baczewski, R. Naaman, and Y. Paltiel; Enantio-Specific Interaction of Chiral Molecules with Magnetic Substrates Science 360, 1331 10.1126/science.aar4265 (2018).
  3. Yael Kapon, Abhijit Saha, Tal Duanis-Assaf, Thijs Stuyver, Amir Ziv, Tzuriel Metzger, Shira Yochelis, Sason Shaik, Ron Naaman, Meital Reches, and Yossi Paltiel, Evidence for New Enantiospecific Interaction Force in Chiral Biomolecules CHEM 7, 1–13 (2021). https://doi.org/10.1016/j.chempr.2021.08.002
  4. Wenyan Zhang, Koyel Banerjee-Ghosh, Francesco Tassinari, and Ron Naaman, Enhanced Electrochemical Water Splitting with Chiral Molecule-Coated Fe3O4 Nanoparticles ACS Energy Lett. 3, 2308−2313 (2018).
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