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The Materials Map is an open tool for improving networking and interdisciplinary exchange within materials research. It enables cross-database search for cooperation and network partners and discovering of the research landscape.

The dashboard provides detailed information about the selected scientist, e.g. publications. The dashboard can be filtered and shows the relationship to co-authors in different diagrams. In addition, a link is provided to find contact information.

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Kumar, Amit

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Queen's University Belfast

in Cooperation with on an Cooperation-Score of 37%

Topics

Publications (23/23 displayed)

  • 2023Ferrielectricity in the archetypal antiferroelectric, PbZrO336citations
  • 2023Unraveling Spatiotemporal Transient Dynamics at the Nanoscale via Wavelet Transform-Based Kelvin Probe Force Microscopy5citations
  • 2023Ferroelectric domain wall p-n junctions14citations
  • 2022Conducting ferroelectric domain walls emulating aspects of neurological behavior10citations
  • 2022Deterministic Dual control of phase competition in Strained BiFeO3 : A Multi-Parametric Structural Lithography Approachcitations
  • 2020Direct Processing of PbZr0.53Ti0.47O3 Films on Glass and Polymeric Substrates9citations
  • 2020Nanodomain Patterns in Ultra-Tetragonal Lead Titanate (PbTiO3)12citations
  • 2018Revealing the interplay of structural phase transitions and ferroelectric switching in mixed phase BiFeO38citations
  • 2018Electromechanical-mnemonic effects in BiFeO3 for electric field history dependent crystallographic phase patterning5citations
  • 2017Functional and structural effects of layer periodicity in chemicalsolution-deposited Pb(Zr,Ti)O3thin films6citations
  • 2017Mapping grain boundary heterogeneity at the nanoscale in a positive temperature coefficient of resistivity ceramic16citations
  • 2016Local probing of ferroelectric and ferroelastic switching through stress-mediated piezoelectric spectroscopy19citations
  • 2015Sub-nA spatially resolved conductivity profiling of surface and interface defects in ceria films3citations
  • 2014Spatially-resolved mapping of history-dependent coupled electrochemical and electronical behaviors of electroresistive NiO12citations
  • 2014Influence of a Single Grain Boundary on Domain Wall Motion in Ferroelectrics77citations
  • 2013Nanoscale mapping of oxygen vacancy kinetics in nanocrystalline Samarium doped ceria thin films25citations
  • 2013Ferroelectric hafnium oxide: A CMOS-compatible and highly scalable approach to future ferroelectric memories434citations
  • 2013Nanometer-scale mapping of irreversible electrochemical nucleation processes on solid Li-ion electrolytes33citations
  • 2013Nanoscale Probing of Voltage Activated Oxygen Reduction/Evolution Reactions in Nanopatterned (LaxSr1-x)CoO3-delta Cathodes20citations
  • 2013Giant energy density in [001]-textured Pb(Mg1/3Nb2/3)O-3-PbZrO3-PbTiO3 piezoelectric ceramics103citations
  • 2011Measuring oxygen reduction/evolution reactions on the nanoscale238citations
  • 2007Adsorption-controlled molecular-beam epitaxial growth of BiFeO391citations
  • 2006Multiferroic domain dynamics in strained strontium titanate97citations

Places of action

Chart of shared publication
Bassiri-Gharb, Nazanin
5 / 12 shared
Tian, Mengkun
1 / 6 shared
Naden, Aaron
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Lisenkov, Sergey
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Kacher, Josh
1 / 2 shared
Yao, Yulian
2 / 5 shared
Beller, Zachary
1 / 2 shared
Ponomareva, Inna
1 / 2 shared
Sharma, Surbhi
1 / 3 shared
Jiang, Wenjun
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Morelli, Alessio
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Yu, Zidong
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Biglarbeigi, Pardis
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Soin, Navneet
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Pauly, Serene
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Farokh-Payam, Amir
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Finlay, Dewar D.
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Mccluskey, Conor
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Suna, Ahmet
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Mcquaid, Raymond G. P.
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Maguire, Jesi R.
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Holsgrove, Kristina M.
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Gregg, Marty
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Baxter, Olivia
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Suna, A.
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Mcconville, J. P. V.
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Guy, Joseph G. M.
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Browne, Niall
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Sharma, Niyorjyoti
1 / 2 shared
Naden, Aaron B.
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Rodriguez, Brian J.
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Edwards, David
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Black, Nathan
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Zhang, Fengyuan
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Joshi, Pooran
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Guy, Joseph
1 / 1 shared
Zhang, Linxing
1 / 2 shared
Scott, James
1 / 1 shared
Chen, Jun
1 / 19 shared
Neumayer, Sabine M.
2 / 4 shared
Bassiri-Gharb, N.
1 / 1 shared
Rodriguez, B. J.
1 / 14 shared
Naden, A. B.
1 / 1 shared
Neumayer, S. M.
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Browne, N.
1 / 1 shared
Edwards, D.
1 / 3 shared
Mazumdar, D.
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Deng, Carmen Z.
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Williams, Samuel C.
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Brewer, Steven J.
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Ramasse, Quentin M.
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Douglas, Alan M.
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Ward, Michael B.
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Haigh, Sarah J.
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Prestat, Eric
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Brewer, Steven
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Jesse, Stephen
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Chen, Long-Qing
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Cao, Ye
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Kalinin, Sergei V.
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Arruda, Thomas M.
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Belianinov, Alex
1 / 2 shared
Farrow, Tim
1 / 1 shared
Balestrino, Giuseppe
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Yang, Nan
1 / 4 shared
Doria, Sandra
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Yamamoto, Takahisa
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Tselev, Alexander
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Rahani, Ehasan Kabiri
1 / 1 shared
Ikuhara, Yuichi
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Shibata, Naoya
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Strelcov, Evgheni
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Shenoy, Vivek B.
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Kim, Yunseok
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Sugiyama, Issei
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Randall, Clive A.
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Rainforth, W. M.
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Reaney, Ian M.
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Zhang, Huairuo
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Marincel, Daniel M.
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Trolier-Mckinstry, Susan
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Kalinin, S. V.
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Jesse, S.
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Licoccia, S.
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Aruta, C.
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Bartolomeo, E. Di
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Balestrino, G.
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Tebano, A.
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Yang, N.
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Doria, S.
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Polakowski, P.
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Muller, S.
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Leonard, Donovan N.
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Khachaturyan, Armen
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Kalinin, Sergei
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Cho, Kyung-Hoon
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Priya, Shashank
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Gopalan, V.
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Li, Y. L.
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Reiche, P.
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Chart of publication period
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Co-Authors (by relevance)

  • Bassiri-Gharb, Nazanin
  • Tian, Mengkun
  • Naden, Aaron
  • Lisenkov, Sergey
  • Kacher, Josh
  • Yao, Yulian
  • Beller, Zachary
  • Ponomareva, Inna
  • Sharma, Surbhi
  • Jiang, Wenjun
  • Morelli, Alessio
  • Yu, Zidong
  • Biglarbeigi, Pardis
  • Soin, Navneet
  • Pauly, Serene
  • Farokh-Payam, Amir
  • Finlay, Dewar D.
  • Mccluskey, Conor
  • Suna, Ahmet
  • Mcquaid, Raymond G. P.
  • Maguire, Jesi R.
  • Holsgrove, Kristina M.
  • Gregg, Marty
  • Baxter, Olivia
  • Suna, A.
  • Mcconville, J. P. V.
  • Guy, Joseph G. M.
  • Browne, Niall
  • Sharma, Niyorjyoti
  • Naden, Aaron B.
  • Rodriguez, Brian J.
  • Edwards, David
  • Black, Nathan
  • Zhang, Fengyuan
  • Joshi, Pooran
  • Guy, Joseph
  • Zhang, Linxing
  • Scott, James
  • Chen, Jun
  • Neumayer, Sabine M.
  • Bassiri-Gharb, N.
  • Rodriguez, B. J.
  • Naden, A. B.
  • Neumayer, S. M.
  • Browne, N.
  • Edwards, D.
  • Mazumdar, D.
  • Deng, Carmen Z.
  • Williams, Samuel C.
  • Brewer, Steven J.
  • Arredondo-Arechavala, Miryam
  • Kepaptsoglou, Demie M.
  • Ramasse, Quentin M.
  • Douglas, Alan M.
  • Ward, Michael B.
  • Haigh, Sarah J.
  • Prestat, Eric
  • Brewer, Steven
  • Jesse, Stephen
  • Chen, Long-Qing
  • Cao, Ye
  • Kalinin, Sergei V.
  • Arruda, Thomas M.
  • Belianinov, Alex
  • Farrow, Tim
  • Balestrino, Giuseppe
  • Yang, Nan
  • Doria, Sandra
  • Yamamoto, Takahisa
  • Tselev, Alexander
  • Rahani, Ehasan Kabiri
  • Ikuhara, Yuichi
  • Shibata, Naoya
  • Strelcov, Evgheni
  • Shenoy, Vivek B.
  • Kim, Yunseok
  • Sugiyama, Issei
  • Randall, Clive A.
  • Rainforth, W. M.
  • Reaney, Ian M.
  • Zhang, Huairuo
  • Marincel, Daniel M.
  • Trolier-Mckinstry, Susan
  • Kalinin, S. V.
  • Jesse, S.
  • Licoccia, S.
  • Aruta, C.
  • Bartolomeo, E. Di
  • Balestrino, G.
  • Tebano, A.
  • Yang, N.
  • Arruda, T. M.
  • Doria, S.
  • Mikolajick, T.
  • Polakowski, P.
  • Boscke, T. S.
  • Muller, S.
  • Paul, J.
  • Yurchuk, E.
  • Riedel, S.
  • Schenk, T.
  • Martin, D.
  • Khullar, K.
  • Seidel, K.
  • Kersch, A.
  • Weinreich, W.
  • Boschke, R.
  • Schlosser, T.
  • Schroder, U.
  • Bentum, R. Van
  • Muller, J.
  • Zawodzinski, Thomas A.
  • Lawton, Jamie S.
  • Zayats, Sergey
  • Ivanov, Ilia N.
  • Butyaev, Oleg
  • Crumlin, Ethan J.
  • Shao-Horn, Yang
  • Christen, Hans M.
  • Biegalski, Michael D.
  • Borisevich, Albina Y.
  • Mutoro, Eva
  • Leonard, Donovan N.
  • Khachaturyan, Armen
  • Kalinin, Sergei
  • Maurya, Deepam
  • Yan, Yongke
  • Cho, Kyung-Hoon
  • Priya, Shashank
  • Ciucci, Francesco
  • Morozovska, Anna N.
  • Ke, X.
  • Gopalan, V.
  • Schlom, D. G.
  • Chen, Y. B.
  • Chu, Y. H.
  • Pan, X. Q.
  • Orenstein, J.
  • Schiffer, P.
  • Heeg, T.
  • Ramesh, R.
  • Schubert, J.
  • Ihlefeld, J. F.
  • Martin, L. W.
  • Uecker, R.
  • Jia, Q. X.
  • Eklund, C. -J.
  • Tian, L.
  • Li, Y. L.
  • Rabe, K. M.
  • Gopalan, Venkatraman
  • Haeni, J. H.
  • Vasudevarao, A.
  • Chen, L. Q.
  • Reiche, P.
OrganizationsLocationPeople

article

Measuring oxygen reduction/evolution reactions on the nanoscale

  • Kumar, Amit
  • Jesse, Stephen
  • Ciucci, Francesco
  • Morozovska, Anna N.
  • Kalinin, Sergei V.
Abstract

The efficiency of fuel cells and metal-air batteries is significantly limited by the activation of oxygen reduction and evolution reactions. Despite the well-recognized role of oxygen reaction kinetics on the viability of energy technologies, the governing mechanisms remain elusive and until now have been addressable only by macroscopic studies. This lack of nanoscale understanding precludes optimization of material architecture. Here, we report direct measurements of oxygen reduction/evolution reactions and oxygen vacancy diffusion on oxygen-ion conductive solid surfaces with sub-10 nm resolution. In electrochemical strain microscopy, the biased scanning probe microscopy tip acts as a moving, electrocatalytically active probe exploring local electrochemical activity. The probe concentrates an electric field in a nanometre-scale volume of material, and bias-induced, picometre-level surface displacements provide information on local electrochemical processes. Systematic mapping of oxygen activity on bare and platinum-functionalized yttria-stabilized zirconia surfaces is demonstrated. This approach allows direct visualization of the oxygen reduction/evolution reaction activation process at the triple-phase boundary, and can be extended to a broad spectrum of oxygen-conductive and electrocatalytic materials.

Topics
  • impedance spectroscopy
  • surface
  • phase
  • Oxygen
  • Platinum
  • activation
  • vacancy
  • phase boundary
  • scanning probe microscopy