Dr. Ahmed Ayyad


Dr. Ahmed Ayyad

Head of Chemistry Department, Hebron University


Dr. Ahmed Ayyad obtained his B.Sc. From Alquds Universiyt in 1995. He obtained his master degree from Leiden University in the Netherlands in the year 1998. He then moved to Germany for his Ph.D degree. In 2002 he obtained his Ph.D in physical chemistry from the University of Karlsruhe. Right now Dr. Ayyad is working as a teaching staff at the University of Hebron since 2007. 

Office No.
+972 (2) 2220995
Hebron University, P.O.Box: 40, Hebron, West-Bank, Palestine.


1991-1995         B.Sc. in chemistry, minor: chemical technology, Jerusalem University, East Jerusalem.

1996-1998         M.Sc./drs. in physical chemistry, Leiden University, Institute for Physical and Macromolecular Chemistry, Gorlaeus Laboratories, Leiden, The Netherlands.

1998-2002         Ph.D.  in physical chemistry, magna cum laude, Karlsruhe University (TH), Institute for Physical and Electrochemistry (group: physical chemistry of condensed matter), Karlsruhe, Germany.

Academic and Administrative Experience

Post-doc, Christian-Albrechts University Kiel, Institute for Applied and Experimental Physics, Kiel, Germany, research group ’surfaces and interfaces’, Prof. Dr. Olaf Magnussen

Sept. 2003-2005: as an Alexander-von-Humboldt fellow (Alexander-von-Humboldt Foundation, Germany.

Jan 2019-now    Associate Professor of Physical Chemistry, Hebron University.

2015-2017        Associate Professor of Physical Chemistry, Hebron University.

2007-2015            Assistant Professor of Physical Chemistry, Hebron University.




1.    A.H. Ayyad, Test of the des Cloiseaux Law by Membrane Osmometry on Pullulan, Macromolecular Rapid Communications 22(8) (2001) 652. 

2.    N. F. El-Ansary, G. A. Hoshoudy, A. S. Abd-Elrady, A. H. A. Ayyad,  Effects of surface tension and rotation on the Rayleigh–Taylor instability, Physical Chemistry Chemical Physics 4 (2002) 1464.

3.    A.H. Ayyad, I. Mechdiev, W. Freyland, Light scattering study of surface freezing and surface viscoelasticity in a eutectic liquid Ga–Bi alloy, Chemical Physics Letters 6 (2002).

4.    A. Ayyad and W. Freyland, Surface free energy and wetting in Ga-Bi alloys: a capillary wave spectroscopy study, Surface Science 506 (2002) 1-11.

5.    W. Freyland and A. Ayyad, Wetting, prewetting and surface freezing transitions in fluid Ga-based alloys: Surface light scattering study, Journal of Physics Condensed Matter 15 (2003) 151.

6.    A. H. Ayyad, J. Stettner, O. M. Magnussen, Electrocompression of the Au(111) surface layer during Au electrodeposition, Physical Review Letters 94(6) (2005) 066106.

7.    K.Krug, A. Ayyad, K. Koelln, J. Stettner and O.M. Magnussen, In-situ X-ray investigation of the electrodeposition of Au on Au single crystal surfaces, Fruehjahrstagung der Deutschen Physikalischen Gesellschaft Berlin DPG2005 (2005).

8.    D. Kaminski, K. Krug, A.H. Ayyad and J. Stettner, In situ diffraction studies of Au(001) electrode surface structure during Au electrodeposition, poster (2006).

9.    O.M. Magnussen, K. Krug, A.H. Ayyad, J. Stettner, In situ diffraction studies of electrode surface structure during gold electrodeposition, Electrochimica Acta (2008).

10.  A. H. Ayyad, Theoretical calculation of the temperature coefficient of surface excess entropy of pure liquid metals, Applied Surface Science; 256 (2010) 4081.

11.  A. Ayyad, F. Aqra, Theoretical consideration of the anomalous temperature dependence of the surface tension of pure liquid Gallium, Theoretical Chemistry Accounts 127(5-6) (2010) 443.

12.  A. H. Ayyad, 2D-isothermal compressibility of deposited gold layer on Au(111) surface, Applied Surface Science; 256 (2010) 3303.

13.  A. Ayyad, F. Aqra, Physicochemical properties of two-layer liquid drop, Journal of Emerging Trends in Engineering and Applied Sciences1(1) (2010) 109.

14.  A. Ayyad, F. Aqra, Application of Young’s Equation to Two Immiscible Liquids Resting on a Solid Substrate, Russian Journal of Physical Chemistry 84(13) (2010) 2290.

15.  A. H. Ayyad, Thermodynamic derivation of the Young-Dupré form equations for the case of two immiscible liquid drops resting on a solid substrate, Journal of Colloid and Interface Science 346(2) (2010) 483.

16.  F. Aqra, A. Ayyad, F. Takrori, Model calculation of the surface tension of liquid Ga–Bi alloy, Applied Surface Science 257(8) (2011) 3577.

17.  F. Aqra, A. Ayyad, Theoretical study of a thermophysical property of molten semiconductors, Journal of Metallurgy (Article ID 436704) (2011) 5 pages.

18.  F. Aqra, A. Ayyad, Theoretical temperature-dependence surface tension of pure liquid gold, Materials Letters 65(14) (2011) 2124.

19.  A. Ayyad, F. Aqra,  Mechanical stability of two immiscible liquid drops resting on a solid substrate, Physics and Chemistry of Liquids  49(4) (2011) 430. 

20.  F. Aqra, A. Ayyad, Surface tension of pure liquid bismuth and its temperature dependence: Theoretical calculations, Materials Letters 65(4) (2011) 760.

21.  F. Aqra, A. Ayyad, Erratum: Theoretical calculations of the surface tension of liquid transition metals, Metallurgical and Materials Transactions B42B(2) (2011) 435.

22.  A. H. Ayyad, F. Takrori, Can a Heavier Liquid Float on Top of a Lighter One? Chinese Physics Letters 28 (2011) 1.

23.  F. Aqra, A. Ayyad, Surface Tension of Liquid Alkali, Alkaline, and Main Group Metals: Theoretical Treatment and Relationship Investigations, Metallurgical and Materials Transactions A42(9) (2011) 2680.

24.  F. Aqra, A. Ayyad, Theoretical Estimation of Temperature-Dependent Surface Tension of Liquid Antimony, Boron, and Sulfur, Metallurgical and Materials Transactions B 42(3) (2011) 437.

25.  F. Aqra, A. Ayyad, Theoretical calculations of the surface tension of Ag(1−x)–Cu(x) liquid alloys, Journal of Alloys and Compounds 509(19) (2011) 5736.

26.  F. Aqra, A. Ayyad, Surface energies of metals in both liquid and solid states, Applied Surface Science 257(15) (2011) 6372.

27.  F. Aqra, A. Ayyad, Surface tension (γLV), surface energy (γSV) and crystal-melt interfacial energy (γSL) of metals, Current Applied Physics 12(1) (2012) 31.

28.  F. Aqra, A. Ayyad, Surface tension of pure liquid lanthanide and early actinide metals, Physics and Chemistry of Liquids 50(3) (2012) 336.

29.  F. Aqra, A. Ayyad and F. Takrori, Empirical relations for calculating selected physical properties of pure liquid metals and binary liquid alloys, Hebron University Research Journal (A). Vol.(6), pp.(01 – 17), 2012.

30.  F. Aqra and A. Ayyad, Surface free energy of alkali and transition metal nanoparticles, Applied Surface Science 314 (2014) 308–313.

31.  F. Aqra and A. Ayyad, Correlations of the surface tension and some thermodynamic and transport properties of the alkali metal halides at their melting temperatures based on their corresponding molar volumes, Fluid Phase Equilibria 385 (2015) 134–138.

32.  M. Natsheh, A. Ayyad, Temperature-induced adsorption of sodium poly(styrenesulfonate) to the Water-Air Interface, Materials Letters 160 (2015) 378-380.

33.  A. Ayyad, On the Surface Tension of Molten Salts and its Temperature Dependence, Physics and Chemistry of Liquids, 55 (2017), 120-130.

34.  F.M. Takrori and A. Ayyad. Surface Energy of Alloy Nanoparticles, Applied Surface Science 401, 65-68 (2017).

Research Interests

-       Researcher in the field of Physical chemistry, theoretical and experimental (see publication list). Current research themes: effect of temperature on the adsorption of polyelectrolytes (cationic and anionic) at water-air and water-oil interfaces, surface energy of alloy nanoparticles, surface and interfacial properties of room temperature molten salts. Group leader. Conductivity of Polyelectrolytes Solutions 

Courses Schedule

# Course No. Course Name Class No. Room Time
1 43481 Special Topics in Chemistry 1 s101 (10:50-09:30) الMon,الWed
2 43495 Field Training 1 0000 (17:20-14:30) الMon
3 82212 Physical Pharmacy 2 h001 (09:00-08:00) الSun,الThu
4 82213 Physical Pharmacy Lab. 2 o310 (13:50-11:00) الThu
5 82213 Physical Pharmacy Lab. 5 o310 (13:50-11:00) الSun

Scientific Awards

Award from Hebron University excellence in teaching and learinging for the best idea on teaching methodology 2013

Zouhair Hijawi award for best scientific research publication in chemistry in 2019


Alexsander Von Humblot foundation: Postdocatoral Research fellowship 2004