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Alexie M. Kolpak
Researcher at Massachusetts Institute of Technology
Publications - 101
Citations - 6571
Alexie M. Kolpak is an academic researcher from Massachusetts Institute of Technology. The author has contributed to research in topics: Ferroelectricity & Boltzmann equation. The author has an hindex of 34, co-authored 100 publications receiving 5187 citations. Previous affiliations of Alexie M. Kolpak include University of Pennsylvania & Yale University.
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Journal ArticleDOI
Water electrolysis on La(1-x)Sr(x)CoO(3-δ) perovskite electrocatalysts.
J. Tyler Mefford,Xi Rong,Artem M. Abakumov,Artem M. Abakumov,William G. Hardin,Sheng Dai,Alexie M. Kolpak,Keith P. Johnston,Keith J. Stevenson +8 more
TL;DR: This work attempts to rationalize the high activities of La1−xSrxCoO3−δ through the electronic structure and participation of lattice oxygen in the mechanism of water electrolysis as revealed through ab initio modelling.
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Remote epitaxy through graphene enables two-dimensional material-based layer transfer
Yunjo Kim,Samuel S. Cruz,Kyusang Lee,Babatunde Alawode,Chanyeol Choi,Yi Song,Jared M. Johnson,Christopher Heidelberger,Wei Kong,Shinhyun Choi,Kuan Qiao,Ibraheem Almansouri,Ibraheem Almansouri,Eugene A. Fitzgerald,Jing Kong,Alexie M. Kolpak,Jinwoo Hwang,Jeehwan Kim +17 more
TL;DR: It is shown that the weak van der Waals potential of graphene cannot completely screen the stronger potential field of many substrates, which enables epitaxial growth to occur despite its presence, and is also applicable to InP and GaP.
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Ferroelectric Phase Transition in Individual Single-Crystalline BaTiO3 Nanowires
Jonathan E. Spanier,Alexie M. Kolpak,Jeffrey J. Urban,Ilya Grinberg,Lian Ouyang,Wan Soo Yun,Andrew M. Rappe,Hongkun Park +7 more
TL;DR: Measurements show that the ferroelectric phase transition temperature (TC) is depressed as the nanowire diameter (dnw) decreases, following a 1/dnw scaling, and density functional theory (DFT) calculations indicate that ferroElectricity in nanowires is stabilized by molecular adsorbates such as OH and carboxylates.
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A Fundamental Relationship between Reaction Mechanism and Stability in Metal Oxide Catalysts for Oxygen Evolution
TL;DR: In this paper, the surface structure and OER mechanism for LaNiO3, a perovksite oxide that exhibits high activity but low stability, were determined using ab initio computations.
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Ferroelectricity in ultrathin perovskite films
TL;DR: In this paper, the effect of metal-oxide interfaces on thin perovskite films was investigated under short-circuit boundary conditions, and it was shown that metallic screening from the electrodes is affected by the difference in work functions at oxide surfaces.