Education:

Ph.D., Materials Science and Engineering, 2008
Iowa State University, Ames, IA, USA
       
M.S., Chemical Engineering, 2002
Middle East Technical University, Ankara, Turkey

B.S., Chemical Engineering, 1999
Middle East Technical University, Ankara, Turkey

Research Summary:

Investigation of heterogeneous catalysis for production of liquid fuels in
microreactors. Synthesis of colloidal nanoparticles for catalytic applications

Publications: Original and Review Articles

Unal, B., Lograsso, T.A., Ross, A., Jenks, C.J., Thiel, P.A. “Terrace Selection During Equilibration at an Icosahedral Quasicrystal Surface”, Physical Review B, 2005, 71, 165411.

Ledieu, J., Cox, E.J., McGrath, R., Richardson, N.V., Chen, Q., Fournée V., Lograsso T.A., Ross A.R., Caspersen K.J., Unal, B, Evans J.W., Thiel P.A. “Step Structure on the Fivefold Al-Pd-Mn Quasicrystal Surface, and on Related Surfaces”, Surface Science, 2005, 583, 4.

Fournée, V., Sharma, H.R., Shimoda, M., Tsai, A.P., Unal, B., Ross, A.R., Lograsso, T.A., Thiel, P.A. “Quantum Size Effects in Metal Thin Films Grown on Quasicrystalline Substrates”, Physical Review Letters, 2005, 95, 155504.

Unal, B., Lograsso, T.A., Ross, A.R., Jenks, C.J., Thiel, P.A. “Voids and Pits on Sputter-Annealed Fivefold Terraces of Icosahedral Al-Pd-Mn Quasicrystals”, Philosophical Magazine, 2006, 86, 819.

Unal, B., Fournée, V., Schnitzenbaumer, K. J., Ghosh, C.J., Jenks, C. J., Ross, A. R., Lograsso, T. A., Evans, J. W., Thiel, P. A. “Nucleation and Growth of Ag Islands on Fivefold Al-Pd-Mn Quasicrystal Surfaces: Dependence of Island Density on Temperature and Flux”, Physical Review B, 2007, 75, 641205.

Unal, B., Evans, J. W., Lograsso T.A., Ross, A. R., Jenks, C. J., Thiel, P.A. “Terrace-dependent Nucleation of Small Ag Clusters on a Five-fold Icosahedral Quasicrystal Surface”, Philosophical Magazine, 2007, 87, 2995.

Unal, B., Qin, F., Han,Y., Liu, D., -J., Jing, D., Layson, A. R., Jenks, C. J., Evans, J. W., Thiel, P.A. “Scanning Tunneling Microscopy and Density Functional Theory Study of Initial Bilayer Growth of Ag Films on NiAl(110)”, Physical Review B, 2007, 76, 195410

Qin, F., Hunt, B. Unal, B., Jing, D., Shen, M., Jenks, C.J.,Gleeson, B., Sordelet, D.J., Thiel, P.A. “Correlations between Structure and Chemical Composition on Oxidized (Pt,Ni)3Al(111) Surfaces”, Surface Science, 2008, 602, 1092.

Han, Y., Unal, B., Qin, F., Jing, D., Jenks, C.J., Liu, D-J, Thiel, P.A., Evans, J.W., “Kinetics of Facile Bilayer Island Formation at Low Temperature: Ag/NiAl(110)”, Physical Review Letters, 2008, 100, 116105.

Unal, B., Jenks, C.J., Thiel, P.A., “Comparison between Experimental Surface Data and Bulk Structure Models for Quasicrystalline Al–Pd–Mn: Average Atomic Densities and Chemical Compositions”, Physical Review B, 2008, 77, 195419.

Ünal, B., Jenks, C.J., Thiel, P.A., “Adsorption Sites on Icosahedral Quasicrystal Surfaces:  Dark Stars and White Flowers”, Journal of Physics: Condensed Matte, 2009, 21, 055009.          ***IOP Editor’s Select Article***

Jing, D., Ünal, B., Qin, F, Evans, J. W., Jenks, C.J., Sordelet, D.J., Thiel, P.A. “Stranski Krastanov-like Growth of a Ag film on a Metallic Glass”, Thin Solid Films,  2009, 517, 6486.

Ünal, B., Fournée, V., Evans, J. W., Thiel, P.A., “Structure and Growth of Height-Selected  Ag Islands on five-fold i-AlPdMn Quasicrystalline Surfaces: STM Analysis and Step  Dynamics Modeling”, Physical Review Letters, 2009, 102, 196103

Ünal, B., Sato, Y., McCarty, K. F., Bartelt, N. C., Duden, T., Jenks, C. J., Schmid, K.,  Thiel, P.A., “The Work Function of a Quasicrystal Surface: Icosahedral Al–Pd–Mn”,  Journal of Vacuum Science and Technology A, 2009, 27, 1249

Duguet, T., Ünal, B., de Weerd, M. C., Ledieu, J., Ribeiro, R. A., Canfield, P.C, Deloudi, S.,  Steurer, W., Jenks, C. J., Dubois, J.M., Fournee, V., Thiel, P.A., “Twofold Surface of the decagonal Al-Cu-Co Quasicrystal”, Physical Review B, 2009, 80, 24201

Han, Y., Ünal, B., Jing, D., Qin, F., Jenks, C. J., Liu, D.-J., Thiel, P.A., Evans, J.W., “Formation and coarsening of Ag(110) bilayer islands on NiAl(110): STM analysis and atomistic lattice-gas modeling”, Physical Review B, 2010, 81, 115461.

Ünal, B., Thiel, P.A., ” Surface Structures and Properties of Quasicrystals”, Encyclopedia of Surface Science and Colloids, Second Edition, 2010. Invited Review Article.

Sato, Y., Ünal, B., Lograsso, T.A., Thiel, P.A., Schmid, A.K., Duden, T., Bartelt N.C., McCarty, K.F., ” Periodic step arrays on the aperiodic i-Al-Pd-Mn Quasicrystal surface at high temperature”, Physical Review B Rapids, 2010, 81, 161406.

Ünal, B., Belianinov, A., Thiel, P.A., Tringides, M.C., ”Lattice Expansion in Islands Stabilized by Electron Confinement: Ag on Si(111)-7x7”, Physical Review B, 2010, 81, 085411.

Quiquandon, M., Ünal, B., Thiel, P.A., Gratias, D., “About the chemistry of the termination 5f-planes in i-Al-Pd-Mn: A comparison between Models and Surface Studies” Journal of   Physics: Conference Series, 2010, 226, 012007.