Associate Researcher at Prof. Zalman Rosenwaks' and Prof. Boris Baramshenko's Diode Pumped Alkali Laser (DPAL) Group Past researcher at Prof. Ilana Bar's Laser Matter Interaction (LMI) Group Department of physics, Ben-Gurion University, Be'er Sheva, Israel Email mayorkas(at)post.bgu.ac.il Phone (Office) +972-8-64-72582 Phone (Lab) +972-8-64-72588/9 Fax +972-8-64-72588 Office Building/room 54/ -117 Lab Building/room 54/ -108

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• Post Doctoral Position, Department of Physics, Ben-Gurion University, Israel. (2013-2016)
  
  Advisor: Prof. Ilana Bar
  Research Field: "Spectral signatures of molecules with biological interest and their hydrated clusters"
  
  Short term research at A.P.E.Research, Trieste, Italy (10-12/2015)
  
  
• Ph.D. Physics, Electro-Optics, Department of Physics, Ben-Gurion University, Israel. (2008-2013)
  
  Advisor: Prof. Ilana Bar
  Research Field: "The link between spectral signatures and the shape of flexible molecules"
  
  Short term research at the Physical and Theoretical Chemistry Laboratory(PTCL), University of Oxford (3-10/2010)
  
  Advisor: Prof. J. P. Simons
  
Research Field: "Spectral motifs of carbohydrates and their hydrted clusters"




• M.Sc Physics, Electro-Optics, Department of Physics, Ben-Gurion University, Israel. (2006-2008)
  
  Thesis Title: "Spectral Signatures of Biomolecules"
  The structure of biomolecules plays an important role in determining their selectivity and functionality. Molecular shapes and conformations of gas phase biomolecules are mostly investigated by coupling infrared (IR) excitation of fundamental vibrational modes with resonant two photon ionization (R2PI) in the ultraviolet (UV). However, due to the lack of tunable laser sources in the entire IR region, spectral features can be monitored only in a limited range. Therefore, we develop and employ, for the first time, a method combining Stimulated Raman Excitation (SRE) with ion dip spectroscopy (IDS) to investigate and map conformations of small biomolecules. Our results show the great potential of the ILSRS technique, for obtaining the spectral signatures of biomolecules, while using available laser sources.
  
  Advisor: Prof. Ilana Bar
  
  
  
• B.A Natural Science, Department of Natural Sciences, The Open University of Israel. (1997-2002)
  
  Project I: "Analysis methods in the investigation of crystal structure of Fluorite"
  Project II: "Analysis and comparison of the structure differences in Fluorite and Apatite crystals"
  Advisor: Dr. Michael Gaft

Related to research

• A. Shachar, N. Mayorkas and I. Bar, Structural features of monohydrated 2-(4-fluorophenyl)ethylamine: a combined spectroscopic and computational study, Phys. Chem. Chem. Phys., 2017, DOI: 10.1039/c7cp04195k

• A. Shachar, N. Mayorkas, H. Sachs and I. Bar, The conformational landscape of 2-(4-fluoro-phenyl)-ethylamine: Consequences of fluorine substitution at the para position , Phys. Chem. Chem. Phys., 2017,19, 510-522

• N. Mayorkas, H. Sachs, M. Schütz, S.-i. Ishiuchi, M. Fujii, O. Dopfer and I. Bar, Structural motifs of 2-(2-fluoro-phenyl)-ethylamine conformers , Phys. Chem. Chem. Phys., 2016, 18, 1191-1201.

• N. Mayorkas, S. Cohen, H. Sachs, and I. Bar, Photofragment Ionization-loss Stimulated Raman Spectroscopy of a Hydrated Neurotransmitter: 2-Phenylethylamine–water, RSC Adv., 2014, 4, 58752

• N. Mayorkas, A. Bernat, S. Izbitski, and I. Bar, Vibrational and vibronic spectra of tryptamine conformers, J. Chem. Phys. 138, 124312 (2013).

• M. Epshtein, A. Portnov, N. Mayorkas, S. Rosenwaks, B. Brauer and I. Bar, Revealing the Hot Bands in the Regions of the N-H and C-H Stretch Fundamentals of Pyrrole, J. Phys. Chem. A. 2013, 117, 11618−11623.

• N. Mayorkas, S. Izbitski, A. Bernat and I. Bar, Simultaneous Ionization-Detected Stimulated Raman and Visible− Visible−Ultraviolet Hole-Burning Spectra of Two Tryptamine Conformers, J. Phys. Chem. Lett. 2012, 3, 603−607

• N. Mayorkas, S. Rudic, E. J. Cocinero, B. G. Davis and J. P. Simons, Carbohydrate hydration: heavy water complexes of a and b anomers of Glucose, Galactose, fucose and Xylose, Phys. Chem. Chem. Phys., 2011, 13 (41), 18671 - 18678

• N. Mayorkas, S. Rudic, B. G. Davis and J. P. Simons, Heavy water hydration of mannose: the anomeric effect in solvation, laid bare, Chem. Sci., 2011, 2 (6), 1128 - 1134

• M. Pincu, E. J. Cocinero, N. Mayorkas, B. Brauer, B. G. Davis, R. B. Gerber and J. P. Simons, Isotopic hydration of cellobiose: vibrational spectroscopy and dynamical simulations, J. Phys. Chem. A., 2011, 115 (34), 9498–9509

• N. Mayorkas, I. Malka and I. Bar, Ionization-loss stimulated Raman spectroscopy for conformational probing of flexible molecules, Phys. Chem. Chem. Phys, 2011, 13, 6808 - 6815

• A. Golan, N. Mayorkas, S. Rosenwaks and I. Bar. Raman spectral signatures as conformational probes of gas phase flexible molecules, J. Chem. Phys. 131, 024305 (2009)

• A. Golan, N. Mayorkas, S. Rosenwaks and I. Bar, A new method for determining absorption cross sections out of initially excited vibrational states, J. Chem. Phys. 130, 054303 (2009)

Publications in PC Magazine

• Grid Computing, The next big FLOP, Computing for the 21st century", PC Magazine, 157, 2006. (Hebrew)

26.11.2015 "Electron Spin Noise Scanning-Tunnelling Microscopy ESN-STM", Poster Presentation, NanotechItaly2015, Bologna, Italy.
15.01.2013 "The Link Between Spectral Signatures and the Shape of Flexible Molecules",talk on Ph.D. thesis work, Lasers seminar, Ben Gurion University of the Negev, Beer Shava Israel.
14.04.2011 "Structural Probing of Flexible Molecules", Talk, Physics Festival, Sde-Boker, Israel.
06-08.04.2011 "Ionization-Loss Stimulated Raman Spectroscopy for Conformational Probing of Flexible Molecules", Poster Presentation, Faraday Discussions 150 Conference, Basel Switzerland.
06-08.04.2011 "IR-UV Ion Dip Spectroscopy of Mannose•D2On Complexes: the Anomeric Effect Laid Bare", Poster Presentation, Faraday Discussions 150 Conference, Basel Switzerland.
12-17.06.2010 "Raman Spectral Signatures as Conformational Probes of Gas Phase Flexible Molecules", Poster Presentation, IBBI Conference, Berlin Germany.
28.04.2010 "Raman Spectral Signatures as Conformational Probes of Gas Phase Flexible Molecules", Poster Presentation, LSF user meeting, Abingdon United Kingdom.
03.06.2008 "Spectral Signatures of Biomolecules", talk on M.Sc thesis work, Lasers seminar, Ben Gurion University of the Negev, Beer Shava Israel.

2016-2017 Lecturer in physics, Negishut Program for Pupils seeking Higher education, Ben-Gurion University of the Negev.
2009-2016 Advisor for pupils in research, Ilan Ramon Center for youth seeking science.
2008-2015 Advanced Physics Course, Lab assitant in X-Ray, STM, HeNe, UHV-LEED and NMR Labs, Physics department, Ben-Gurion University of the Negev.

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My Software Cartes Du Ciel	My Camera SAC 7B CCD camera+Paltier Cooling	My Telescope Meade® 8" LX90 Schmidt-Cassegrain Telescope
Ring Nebula M57 or NGC6720	Mars at close proximity to Earth	The Moon