Materials Science and Engineering
Main energy field:
Renewable Energy Sources
Thermoelectric waste heat recovery
2011 – Asst. Prof. at the Department of Materials Science and Engineering, Technion, Israel.
2009 – Scientific Consultant at the Northwestern University Center for Atom-Probe Tomography (NUCAPT), Northwestern University, Evanston IL.
2007 – 2010 – Post-doctoral Fellow at the Department of Materials Science and Engineering, Northwestern University, Evanston IL.
2009 – An Initiative for Sustainability and Energy at Northwestern University (ISEN) Fellowship.
2008 – A Marie Curie International Outgoing Fellowship (IOF) of the seventh program (FP-7) of the Commission of the European Community (CEC).
2005 – A Germany-Israel Minerva Seed Grant Fellowship.
Ph.D. 2007, Technion, Materials Engineering
M.Sc. 2003, Technion, Materials Engineering
B.Sc. 2001, Technion, Materials Engineering
B.A. 2001, Technion, Physics
Research Area in Energy:
Thermoelectric materials; Designing functional properties of crystalline materials, Computational materials science based on the density functional theory (DFT), Atom-probe tomography (APT), Phase transformations in alloys, Energetics of interfaces in crystalline materials.
Energy conversion and renewable energy: Adjusting the properties of thermoelectric materials for energy applications by nanostructuring Thermoelectric (TE) devices are capable of capturing waste heat and converting it into electricity; this has major implications for energy harvesting. We employ nanostructuring approaches for reducing thermal conductivity, based on the formation of coherent nanometer- size precipitates dispersed in a TE matrix. Utilizing advanced characterization techniques, we analyze the materials structure and chemistry down to the nanometer length-scale, correlating their microstructures with their TE properties. Supplemented by computational methods, we attempt to model the underlying physics of TE materials.
P. Shekhter, D. Schwendt, Y. Amouyal, T. F. Wietler, H. J. Osten, and M. Eizenberg: Strain-induced phase variation and dielectric constant enhancement of epitaxial Gd2O3, J. Appl. Phys. 120 (1), 014101 (2016).
Baranovskiy and Y. Amouyal: Structural stability of calcium-manganate based CaO(CaMnO3)m (m = 1, 2, 3, ∞) compounds for thermoelectric applications, Journal of Alloys and Compounds 687, 562 (2016).
L. Popilevsky, V. M. Skripnyuk, M. Beregovsky, M. Sezen, Y. Amouyal, and E. Rabkin: Hydrogen storage and thermal transport properties of pelletized porous Mg-2 wt.% multiwall carbon nanotubes and Mg-2 wt.% graphite composites, International Journal of Hydrogen Energy 41 (32), 14461 (2016).
P. Shekhter, C. Uzan-Saguy, J. Schubert, Y. Amouyal, and M. Eizenberg: Experimental and computational study of zero dimensional metallic behavior at the LaLuO3/SrTiO3 interface, J. Vac. Sci. Tech. B 34 (2), 021204 (2016).
Y. Amouyal and G. Schmitz: Atom probe tomography—A cornerstone in materials characterization. MRS Bulletin 41 (01), 13 (2016).
Graff and Y. Amouyal: Effects of Lattice Defects and Niobium Doping on Thermoelectric Properties of Calcium Manganate Compounds for Energy Harvesting Applications. J. Elect. Mater. 45 (3), 1508 (2016).
D. Amram, Y. Amouyal, and E. Rabkin: Encapsulation by segregation – a multifaceted approach to gold segregation in iron particles on sapphire. Acta Mater. 102 342 (2016).
E. Joseph and Y. Amouyal: Enhancing thermoelectric performance of PbTe-based compounds by substituting elements: a first-principles study. J. Elect. Mater. 44 (6), 1460 (2015).
E. Joseph and Y. Amouyal: Towards a predictive route for selection of doping elements for the thermoelectric compound PbTe from first-principles. J. Appl. Phys. 117 (17), 175102 (2015).
Y. Amouyal: Reducing Lattice Thermal Conductivity of the Thermoelectric Compound AgSbTe2 (P4/mmm) by Lanthanum Substitution: Computational and Experimental Approaches. J. Elect. Mater. 43 (10), 3772 (2014).
Y. Amouyal, Z. Mao, and D. N. Seidman: Combined atom- probe tomography and first-principles calculations for studying atomistic interactions between tungsten and tantalum in nickel-based alloys. Acta Mater. 74, 296 (2014).
A. Graff and Y. Amouyal: Reduced thermal conductivity in niobium-doped calcium-manganate compounds for thermoelectric applications. Appl. Phys. Lett. 105 (18), 181906 (2014).
Y. Amouyal: On the role of lanthanum substitution defects in reducing lattice thermal conductivity of the AgSbTe2 (P4/mmm) thermoelectric compound for energy conversion applications. Comp. Mater. Sci. 78, 98 (2013).
J. Ribbe, G. Schmitz, D. Gunderov, Y. Estrin, Y. Amouyal, G. Wilde, S.V. Divinski: Effect of annealing on percolating porosity in ultrafine-grained copper produced by equal channel angular pressing. Acta Mater. 61, 5477 (2013).
Y. Amouyal and D. N. Seidman: Atom-Probe Tomography of Nickel-based Superalloys with Green or Ultraviolet Lasers: A Comparative Study. Microscopy and Microanalysis 18 (5), 971 (2012).
J.A. Rothschild, A. Cohen, A. Brusilovsky, L. Kornblum, Y. Kauffmann, Y. Amouyal, and M. Eizenberg: Fermi level tuning using the Hf-Ni alloy system as a gate electrode in metal-oxide-semiconductor devices. J. Appl. Phys. 112 (1), 013717 (2012).
Y. Ashuach, Y. Kauffmann, D. Isheim, Y. Amouyal, D.N. Seidman, and E. Zolotoyabko: Atomic intermixing in short-period InAs/GaSb superlattices. Appl. Phys. Lett. 100 (24), 241604 (2012).
L. Kornblum, P. Shekhter, Y. Slovatizky, Y. Amouyal, and M. Eizenberg: Composition and crystallography dependence of the work function: Experiment and calculations of Pt-Al alloys. Phys. Rev. B 86 (12), 125305 (2012).
Y. Amouyal and D. N. Seidman: The role of hafnium in the formation of misoriented defects in Ni-based superalloys: An atom-probe tomographic study. Acta Mater. 59 (2011) pp 3321-3333.
Y. Amouyal and D. N. Seidman: An atom-probe tomographic study of freckle formation in a nickel-based superalloy. Acta Mater. 59 (2011) pp 6729-6742.
Y. Amouyal, Z. Mao, and D. N. Seidman: Effects of tantalum on the partitioning of tungsten between the γ- and γ’- phases in nickel-based superalloys: Linking experimental and computational approaches. Acta Mater. 58 (2010) pp. 5898-5911.
Y. Amouyal, Z. Mao, C. Booth-Morrison, and D. N. Seidman: On the interplay between tungsten and tantalum atoms in Ni-based superalloys: An atom-probe tomographic and first-principles study. Appl. Phys. Lett. 94 (4), 041917 (2009).
L. Klinger, Y. Amouyal, S.V. Divinski, and E. Rabkin: Grain Boundary Diffusion in Recrystallizing Nanocrystalline Materials. Defect and Diffusion Forum Vols. 289-292 (2009) pp. 641-648.
Y. Amouyal, Z. Mao, and D. N. Seidman: Phase partitioning and site-preference of hafnium in the γ'(L12)/γ(fcc) system in Ni-based superalloys: An atom-probe tomographic and first-principles study. Appl. Phys. Lett. 95 (16), 161909 (2009).
Y. Amouyal, S.V. Divinski, L. Klinger, E. Rabkin: Grain Boundary Diffusion and Recrystallization in Ultrafine Grain Copper produced by Equal Channel Angular Pressing. Acta Mater. 56 (2008) pp. 5500-5513.
J. Ribbe, G. Schmitz, Y. Amouyal, Y. Estrin, and S.V. Divinski: Grain boundary radiotracer diffusion of Ni in ultra-fine grained Cu and Cu—1wt.% Pb alloy produced by equal channel angular pressing. Materials Science Forum Vols. 584-586 (2008) pp. 380-386.
Y. Amouyal, Z. Mao, D.N. Seidman: Segregation of tungsten at γ'(L12)/γ(f.c.c.) interfaces in a Ni-based superalloy: An atom-probe tomographic and first-principles study. Appl. Phys. Lett. 93 (20), 201905 (2008).
E. Rabkin, Y. Amouyal, L. Klinger: Scanning probe microscopy study of grain boundary migration in NiAl. Acta Mater. 52 (2004) pp. 4953-4959.
E. Rabkin, Y. Amouyal: Applications of scanning probe microscopy for studying of interfacial thermodynamics and kinetics. Arch. Met. Mat. 49 (2004) pp. 397-410.
Y. Amouyal, E. Rabkin, Y. Mishin: Correlation between grain boundary energy and geometry in Ni-rich NiAl. Acta Mater. 53 (2005) pp. 3795-3805.
Y. Amouyal, S.V. Divinski, Y. Estrin, E. Rabkin: Short-circuit Diffusion in an Ultrafine Grain Copper-Zirconium Alloy Produced by Equal Channel Angular Pressing. Acta Mater. 55 (2007) pp. 5968-5979.
Y. Amouyal, E. Rabkin: A Scanning Force Microscopy Study of Grain Boundary Energy in Copper Subjected to Equal Channel Angular Pressing. Acta Mater. 55 (2007) pp. 6681-6689.