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Fundamental and Computational Sciences Directorate

Staff information

Libor Kovarik

Interfacial Sciences & Simulation
Pacific Northwest National Laboratory
PO Box 999
MSIN: K8-93
Richland, WA 99352

PNNL Publications


  • Shi D, H Wang, L Kovarik, F Gao, C Wan, JZ Hu, and Y Wang. 2018. "WOx supported on ?-Al2O3 with different morphologies as model catalysts for alkanol dehydration." Journal of Catalysis 363:1-8.  doi:10.1016/j.jcat.2018.04.004
  • Stevens AJ, L Luzi, H Yang, L Kovarik, BL Mehdi, AV Liyu, M Gehm, and ND Browning. 2018. "A Sub-Sampled Approach to Extremely Low-Dose STEM." Applied Physics Letters 112(4):Article No. 043104.  doi:10.1063/1.5016192
  • Baylon RA, J Sun, L Kovarik, MH Engelhard, H Li, AD Winkelman, KJ Martin, and Y Wang. 2018. "Structural Identification of ZnxZryOz Catalysts for Cascade Aldolization and Self-Deoxygenation Reactions." Applied Catalysis. B, Environmental 234:337-346.  doi:10.1016/j.apcatb.2018.04.051
  • Dagle V, MD Flake, TL Lemmon, J Saavedra Lopez, L Kovarik, and RA Dagle. 2018. "Effect of the SiO2 Support on the Catalytic Performance of Ag/ZrO2/SiO2 Catalysts for the Single-Bed Production of Butadiene from Ethanol." Applied Catalysis. B, Environmental 236:576-587.  doi:10.1016/j.apcatb.2018.05.055
  • Devaraj A, L Kovarik, EJ Kautz, BW Arey, S Jana, CA Lavender, and VV Joshi. 2018. "Grain Boundary Engineering to Control the Discontinuous Precipitation in Multicomponent U10Mo Alloy." Acta Materialia 151:181-190.  doi:10.1016/j.actamat.2018.03.039
  • Liu X, H Dong, X Yang, L Kovarik, Y Chen, and Q Zeng. 2018. "Effects of Citrate on Hexavalent Chromium Reduction By Structural 1 Fe(II) in Nontronite." Journal of Hazardous Materials 343:245-254.  doi:10.1016/j.jhazmat.2017.09.038
  • Qafoku O, ES Ilton, ME Bowden, L Kovarik, X Zhang, RK Kukkadapu, MH Engelhard, CJ Thompson, HT Schaef, BP McGrail, KM Rosso, and JS Loring. 2018. "Synthesis of Nanometer-Sized Fayalite and Magnesium-Iron(II) Mixture Olivines." Journal of Colloid and Interface Science 515:129-138.  doi:10.1016/j.jcis.2018.01.036


  • Dohnalkova A, BW Arey, T Varga, MD Miller, and L Kovarik. 2017. "Imaging and Analytical Approaches for Characterization of Soil Mineral Weathering." Microscopy and Microanalysis 23(S1):2172-2173.  doi:10.1017/S1431927617011527
  • Kautz EJ, A Devaraj, L Kovarik, CA Lavender, and VV Joshi. 2017. Effect of Silicon in U-10Mo AlloyPNNL-26790, Pacific Northwest National Laboratory, Richland, WA. 
  • Li W, L Kovarik, Y Cheng, L Nie, ME Bowden, J Liu, and Y Wang. 2017. "Stabilization and Transformation of Pt Nanocrystals Supported on ZnAl2O4 Spinel." RSC Advances 7(6):3282-3286.  doi:10.1039/C6RA26159K
  • Li W, L Nie, Y Chen, L Kovarik, J Liu, and Y Wang. 2017. "Surface Enrichment of Pt in Stable Pt-Ir Nano-alloy Particles on MgAl2O4 Spinel in oxidizing atmosphere." Catalysis Communications 93:57-61.  doi:10.1016/j.catcom.2017.01.012
  • Varga T, TC Droubay, L Kovarik, MI Nandasiri, V Shutthanandan, D Hu, B Kim, S Jeon, S Hong, Y Li, and SA Chambers. 2017. "Coupled Lattice Polarization and Ferromagnetism in Multiferroic NiTiO3 Thin Films." ACS Applied Materials & Interfaces 9(26):21879-21890.  doi:10.1021/acsami.7b04481
  • Davidson SD, KA Spies, D Mei, L Kovarik, IV Kutnyakov, XS Li, V Dagle, KO Albrecht, and RA Dagle. 2017. "Steam Reforming of Acetic Acid over Co-supported Catalysts: Coupling Ketonization for Greater Stability." ACS Sustainable Chemistry & Engineering 5(10):9136-9149.  doi:10.1021/acssuschemeng.7b02052
  • Elsaidi SK, MA Sinnwell, D Banerjee, A Devaraj, RK Kukkadapu, TC Droubay, Z Nie, L Kovarik, V Murugesan, S Manandhar, MI Nandasiri, BP McGrail, and PK Thallapally. 2017. "Reduced Magnetism in Core-Shell Magnetite@MOF Composites." Nano Letters 17(11):6968-6973.  doi:10.1021/acs.nanolett.7b03451
  • Jana S, A Devaraj, L Kovarik, BW Arey, LE Sweet, T Varga, CA Lavender, and VV Joshi. 2017. "Kinetics of cellular transformation and competing precipitation mechanisms during sub-eutectoid annealing of U10Mo alloys." Journal of Alloys and Compounds 723:751-771.  doi:10.1016/j.jallcom.2017.06.292
  • Jiang W, J Zhang, L Kovarik, Z Zhu, L Price, J Gigax, E Castanon, X Wang, L Shao, and DJ Senor. 2017. "Irradiation effects and hydrogen behavior in H2+ and He+ implanted gamma-LiAlO2 single crystals." Journal of Nuclear Materials 484:374-381.  doi:10.1016/j.jnucmat.2016.03.014
  • Kovarik L, NM Washton, RK Kukkadapu, A Devaraj, A Wang, Y Wang, J Szanyi, CHF Peden, and F Gao. 2017. "Transformation of active sites in Fe/SSZ-13 SCR catalysts during hydrothermal aging: a spectroscopic, microscopic and kinetics study." ACS Catalysis 7(4):2458-2470.  doi:10.1021/acscatal.6b03679
  • Kruska K, A Rohatgi, VRS Vemuri, L Kovarik, TH Moser, JE Evans, and ND Browning. 2017. "Grain growth in nanocrystalline Mg-Al thin films." Metallurgical and Materials Transactions. A, Physical Metallurgy and Materials Science 48A(12):6118-6125.  doi:10.1007/s11661-017-4350-0
  • Mozaffari S, W Li, CB Thompson, S Ivanov, S Siefert, B Lee, L Kovarik, and AM Karim. 2017. "Colloidal nanoparticle size control: experimental and kinetic modeling investigation of the ligand-metal binding role in controlling the nucleation and growth kinetics." Nanoscale 9(36):13772-13785.  doi:10.1039/c7nr04101b
  • Nie L, D Mei, H Xiong, B Peng, Z Ren, XI Pereira Hernandez, A DelaRiva, M Wang, MH Engelhard, L Kovarik, AK Datye, and Y Wang. 2017. "Activation of Surface Lattice Oxygen in Single-atom Pt/CeO2 for Low-temperature CO Oxidation." Science 358(6369):1419-1423.  doi:10.1126/science.aao2109
  • Okolie C, YF Belhseine, Y Lyu, M Yung, MH Engelhard, L Kovarik, E Stavitski, and C Sievers. 2017. "Conversion of Methane into Methanol and Ethanol over Nickel Oxide on Ceria-Zirconia Catalysts in a Single Reactor." Angewandte Chemie 56(44):13876-13881.  doi:10.1002/anie.201704704
  • Qafoku O, CI Pearce, A Neumann, L Kovarik, M Zhu, ES Ilton, ME Bowden, CT Resch, BW Arey, E Arenholz, AR Felmy, and KM Rosso. 2017. "Tc(VII) and Cr(VI) Interaction with a Naturally Reduced Ferruginous Smectite from the Redox Transition Zone." Environmental Science & Technology 51(16):9042-9052.  doi:10.1021/acs.est.7b02191
  • Romano CA, M Zhou, Y Song, VH Wysocki, A Dohnalkova, L Kovarik, L Pasa Tolic, and BM Tebo. 2017. "Biogenic manganese oxide nanoparticle formation by a multimeric multicopper oxidase Mnx." Nature Communications 8:746.  doi:10.1038/s41467-017-00896-8
  • Song J, Y Wang, ED Walter, NM Washton, D Mei, L Kovarik, MH Engelhard, S Prodinger, Y Wang, CHF Peden, and F Gao. 2017. "Towards rational design of Cu/SSZ-13 selective catalytic reduction catalysts: Implications from atomic-level understanding of hydrothermal stability." ACS Catalysis 7(12):8214-8227.  doi:10.1021/acscatal.7b03020
  • Veghte DP, S China, J Weiss, L Kovarik, MK Gilles, and A Laskin. 2017. "Optical Properties of Airborne Soil Organic Particles." ACS Earth and Space Chemistry 1(8):511-521.  doi:10.1021/acsearthspacechem.7b00071
  • Xiong H, S Lin, JG Goetze, P Pletcher, H Guo, L Kovarik, K Artyushkova, BM Weckhuysen, and AK Datye. 2017. "Thermally Stable and Regenerable Platinum-Tin Clusters for Propane Dehydrogenation Prepared by Atom Trapping on Ceria." Angewandte Chemie International Edition 56(31):8986-8991.  doi:10.1002/anie.201701115
  • Xu M, SL Riechers, ES Ilton, Y Du, L Kovarik, T Varga, BW Arey, O Qafoku, and SN Kerisit. 2017. "Manganese-Calcium Intermixing Facilitates Heteroepitaxial Growth at the (10-14) Calcite-Water Interface." Chemical Geology 470:152-163.  doi:10.1016/j.chemgeo.2017.09.001
  • Zheng Y, L Kovarik, MH Engelhard, Y Wang, Y Wang, F Gao, and J Szanyi. 2017. "Low-Temperature Pd/Zeolite Passive NOx Adsorbers: Structure, Performance and Adsorption Chemistry." Journal of Physical Chemistry C 121(29):15793-15803.  doi:10.1021/acs.jpcc.7b04312
  • Zhu Y, P Sushko, D Melzer, E Jensen, L Kovarik, C Ophus, M Sanchez-Sanchez, JA Lercher, and ND Browning. 2017. "Formation of Oxygen Radical Sites on MoVNbTeOx by Cooperative Electron Redistribution." Journal of the American Chemical Society 139(36):12342-12345.  doi:10.1021/jacs.7b05240


  • Devaraj A, L Kovarik, VV Joshi, S Jana, S Manandhar, BW Arey, and CA Lavender. 2016. High-Resolution Characterization of UMo Alloy MicrostructurePNNL-26020, Pacific Northwest National Laboratory, Richland, WA. 
  • Wang B, HT Harder, ST Kelly, D`Y Piens, S China, L Kovarik, M Keiluweit, BW Arey, MK Gilles, and A Laskin. 2016. "Airborne Soil Organic Particles Generated by Precipitation." Nature Geoscience 9(6):433-438.  doi:10.1038/NGEO2705
  • Aguiar JA, S Wozny, NR Alkurd, M Yang, L Kovarik, T Holesinger, MM Al-Jassim, K Zhu, W Zhou, and JJ Berry. 2016. "Effect of Water Vapor, Temperature, and Rapid Annealing on Formamidinium Lead Triiodide Perovskite Crystallization." ACS Energy Letters 1(1):155-161.  doi:10.1021/acsenergylett.6b00042
  • China S, B Wang, J Weis, LV Rizzo, J Brito, G Cirino, L Kovarik, P Artaxo, MK Gilles, and A Laskin. 2016. "Rupturing of biological spores as a source of secondary particles in Amazonia." Environmental Science & Technology 50(22):12179 - 12186.  doi:10.1021/acs.est.6b02896
  • Kali A, I Cokic, R Tang, A Dohnalkova, L Kovarik, HJ Yang, A Kumar, FS Prato, JC Wood, D Underhill, E Marban, and R Dharmakumar. 2016. "Persistent Microvascular Obstruction After Myocardial Infarction Culminates in the Confluence of Ferric Iron Oxide Crystals, Proinflammatory Burden, and Adverse Remodeling." Circulation 9(11):Article No. e004996.  doi:10.1161/CIRCIMAGING.115.004996
  • Kovarik L, AJ Stevens, AV Liyu, and ND Browning. 2016. "Implementing an Accurate and Rapid Sparse Sampling Approach for Low-Dose Atomic Resolution STEM Imaging." Applied Physics Letters 109(16):Article No. 164102.  doi:10.1063/1.4965720
  • Lao D, RK Kukkadapu, L Kovarik, BW Arey, DJ Heldebrant, and SK Nune. 2016. "Switchable Ionic Liquids: An Environmentally-friendly Medium to Synthesize Nanoparticulate Green Rust." Current Inorganic Chemistry 6(2):92-99.  doi:10.2174/1877944106999160317160621
  • Lebarbier VM, RA Dagle, L Kovarik, A Genc, Y Wang, ME Bowden, H Wan, MD Flake, VA Glezakou, DL King, and RJ Rousseau. 2016. "Steam Reforming of Hydrocarbons from Biomass-Derived Syngas over MgAl2O4-Supported Transition Metals and Bimetallic IrNi Catalysts." Applied Catalysis. B, Environmental 184:142-152.  doi:10.1016/j.apcatb.2015.11.022
  • Levitskaia TG, S Chatterjee, BW Arey, EL Campbell, Y Hong, L Kovarik, JM Peterson, N Pence, J Romero, V Shutthanandan, B Schwenzer, and T Varga. 2016. "RedOx-Controlled Sorption of Iodine Anions by Hydrotalcite Composites." RSC Advances 6(79):76042-76055.  doi:10.1039/c6ra13092e
  • Levitskaia TG, S Chatterjee, N Pence, J Romero, T Varga, MH Engelhard, Y Du, L Kovarik, BW Arey, ME Bowden, and ED Walter. 2016. "Inorganic Tin Aluminophosphate Nanocomposite for Reductive Separation of Pertechnetate." Environmental Science: Nano 3(2):1003-1013.  doi:10.1039/C6EN00130K
  • Muntifering BR, L Kovarik, ND Browning, RC Pond, WB Knowlton, and P Mullner. 2016. "Stress assisted removal of conjugation boundaries in non-modulated Ni-Mn-Ga by coordinated secondary twinning." Journal of Materials Science 51(1):457-466.  doi:10.1007/s10853-015-9236-1
  • Smith CD, VM Lebarbier, MD Flake, KK Ramasamy, L Kovarik, ME Bowden, T Onfroy, and RA Dagle. 2016. "Conversion of Syngas-Derived C2+ Mixed Oxygenates to C3-C5 Olefins over ZnxZryOz Mixed Oxides Catalysts." Catalysis Today 6(7):2325-2316.  doi:10.1039/C5CY01261A
  • Xing R, VM Lebarbier, MD Flake, L Kovarik, KO Albrecht, CA Deshmane, and RA Dagle. 2016. "Steam Reforming of Fast Pyrolysis-Derived Aqueous Phase Oxygenates over Co, Ni, and Rh Metals Supported on MgAl2O4." Catalysis Today 269:166-174.  doi:10.1016/j.cattod.2015.11.046


  • Stevens AJ, L Kovarik, P Abellan, X Yuan, L Carin, and ND Browning. 2015. "TEM Video Compressive Sensing." Microscopy and Microanalysis 21(Suppl 3):1583-1584. 
  • Varga T, TC Droubay, ME Bowden, L Kovarik, D Hu, and SA Chambers. 2015. "Strain-dependence Of The Structure And Ferroic Properties Of Epitaxial NiTiO3 Thin Films Grown On Different Substrates." Advances in Condensed Matter Physics 2015:Art. No. 493045.  doi:10.1155/2015/493045
  • Sun J, AM Karim, XS Li, JE Rainbolt, L Kovarik, Y Shin, and Y Wang. 2015. "Hierarchically structured catalysts for cascade and selective steam reforming/hydrodeoxygenation reactions." Chemical Communications 51(93):16617-16620.  doi:10.1039/C5CC07244A
  • Ewbank JL, L Kovarik, FZ Diallo, and C Sievers. 2015. "Effect of Metal-Support Interactions in Ni/Al2O3 Catalysts with Low Metal Loading for Methane Dry Reforming." Applied Catalysis. A, General 494:57-67.  doi:10.1016/j.apcata.2015.01.029
  • Felmy AR, O Qafoku, BW Arey, L Kovarik, J Liu, DE Perea, and ES Ilton. 2015. "Enhancing Magnesite Formation at Low Temperature and High CO2 Pressure: The Impact of Seed Crystals and Minor Components." Chemical Geology 395:119-125.  doi:10.1016/j.chemgeo.2014.12.003
  • Ilton ES, TC Droubay, AM Chaka, L Kovarik, T Varga, BW Arey, and SN Kerisit. 2015. "Epitaxial single-crystal thin films of MnxTi1-xO2-d grown on (rutile)TiO2 substrates with pulsed laser deposition: Experiment and theory." Surface Science 632:185-194.  doi:10.1016/j.susc.2014.10.013
  • Jiang W, HJ Jung, L Kovarik, Z Wang, TJ Roosendaal, Z Zhu, DJ Edwards, SY Hu, CH Henager, Jr, RJ Kurtz, and Y Wang. 2015. "Magnesium behavior and structural defects in Mg+ ion implanted silicon carbide." Journal of Nuclear Materials 458:146-155.  doi:10.1016/j.jnucmat.2014.12.071
  • Jiang W, HJ Jung, L Kovarik, Z Wang, TJ Roosendaal, Z Zhu, DJ Edwards, SY Hu, CH Henager, Jr, RJ Kurtz, and Y Wang. 2015. "MAGNESIUM PRECIPITATION AND DIFUSSION IN Mg+ ION IMPLANTED SILICON CARBIDE." Chapter 3.3 in FUSION MATERIALS SEMIANNUAL PROGRESS REPORT FOR THE PERIOD ENDING December 31, 2014, vol. DOE-ER-0313/57, ed. PJ Pappano, pp. 85-86.  Oak Ridge National Laboratory, Oak Ridge, TN. 
  • Karim AM, NM Al Hasan, SA Ivanov, S Siefert, RT Kelly, NG Hallfors, AD Benavidez, L Kovarik, A Jenkins, RE Winans, and AK Datye. 2015. "Synthesis of 1 nm Pd Nanoparticles in a Microfluidic Reactor: Insights from in Situ X ray Absorption Fine Structure Spectroscopy and Small-Angle X ray Scattering ." Journal of Physical Chemistry C 119(23):13257-13267.  doi:10.1021/acs.jpcc.5b01681
  • Kovarik L, ME Bowden, D Shi, NM Washton, A Anderson, JZ Hu, J Lee, J Szanyi, JH Kwak, and CHF Peden. 2015. "Unraveling the Origin of Structural Disorder in High Temperature Transition Al2O3: Structure of ?-Al2O3." Chemistry of Materials 27(20):7042-7049.  doi:10.1021/acs.chemmater.5b02523
  • Li Y, Z Wei, F Gao, L Kovarik, RA Baylon, CHF Peden, and Y Wang. 2015. "Effect of Oxygen Defects on the Catalytic Performance of VOx/CeO2 Catalysts for Oxidative Dehydrogenation of Methanol." ACS Catalysis 5(5):3006-3012.  doi:10.1021/cs502084g
  • Perea DE, I Arslan, J Liu, Z Ristanovic, L Kovarik, BW Arey, JA Lercher, SR Bare, and BM Weckhuysen. 2015. "Determining the Location and Nearest Neighbors of Aluminum in Zeolites with Atom Probe Tomography." Nature Communications 6:Article No. 7589.  doi:10.1038/ncomms8589
  • Viswanathan GB, R Shi, A Genc, VA Vorontsov, L Kovarik, CMF Rae, and MJ Mills. 2015. "Segregation At Stacking Faults Within The ?' Phase Of Two Ni-base Superalloys Following Intermediate Temperature Creep." Scripta Materialia 94:5-8.  doi:10.1016/j.scriptamat.2014.06.032


  • Xu M, L Kovarik, BW Arey, AR Felmy, KM Rosso, and SN Kerisit. 2014. "Kinetics and Mechanisms of Cadmium Carbonate Heteroepitaxial Growth at the Calcite (1014) Surface." Geochimica et Cosmochimica Acta 134:221-233.  doi:10.1016/j.gca.2013.11.036
  • Bhattacharya P, EN Nasybulin, MH Engelhard, L Kovarik, ME Bowden, S Li, DJ Gaspar, W Xu, and J Zhang. 2014. "Dendrimer-Encapsulated Ruthenium Nanoparticles as Catalysts for Lithium-O2 Batteries." Advanced Functional Materials 24(47):7510-7519.  doi:10.1002/adfm.201402701
  • Bishop ME, P Glasser, H Dong, BW Arey, and L Kovarik. 2014. "Reduction And Immobilization Of Hexavalent Chromium By Microbially Reduced Fe-bearing Clay Minerals." Geochimica et Cosmochimica Acta 133:186-203.  doi:10.1016/j.gca.2014.02.040
  • Ewbank JL, L Kovarik, CC Kenvin, and C Sievers. 2014. "Effect Of Preparation Methods On The Performance Of Co/Al2O3 Catalysts For Dry Reforming Of Methane." Green Chemistry 16(2):885-896.  doi:10.1039/c3gc41782d
  • Fan D, R Anitori, BM Tebo, PG Tratnyek, JS Lezama Pacheco, RK Kukkadapu, L Kovarik, MH Engelhard, and ME Bowden. 2014. "Oxidative Remobilization of Technetium Sequestered by Sulfide-Transformed Nano Zerovalent Iron." Environmental Science & Technology 48(13):7409-7417.  doi:10.1021/es501607s
  • Jiang W, L Kovarik, Z Zhu, T Varga, MH Engelhard, ME Bowden, TM Nenoff, and T Garino. 2014. "Microstructure and Cs Behavior of Ba-Doped Aluminosilicate Pollucite Irradiated with F+ Ions." Journal of Physical Chemistry C 118(31):18160-18169.  doi:10.1021/jp5045223
  • Kovarik L, ME Bowden, A Genc, J Szanyi, CHF Peden, and JH Kwak. 2014. "Structure of d-Alumina: Toward The Atomic Level Understanding Of Transition Alumina Phases." Journal of Physical Chemistry C 118:18051-18058.  doi:10.1021/jp500051j
  • Lebarbier VMC, RA Dagle, L Kovarik, KO Albrecht, XS Li, L Li, CE Taylor, X Bao, and Y Wang. 2014. "Sorption-Enhanced Synthetic Natural Gas (SNG) Production from Syngas: A Novel Process Combining CO Methanation, Water-Gas Shift, and CO2 Capture." Applied Catalysis. B, Environmental 144:223-232.  doi:10.1016/j.apcatb.2013.06.034
  • Li WZ, L Kovarik, D Mei, MH Engelhard, F Gao, J Liu, Y Wang, and CHF Peden. 2014. "A general mechanism for stabilizing the small sizes of precious metal nanoparticles on oxide supports." Chemistry of Materials 26(19):5475-5481.  doi:10.1021/cm5013203
  • Li Y, Z Wei, F Gao, L Kovarik, CHF Peden, and Y Wang. 2014. "Effects of CeO2 Support Facets on VOx/CeO2 Catalysts in Oxidative Dehydrogenation of Methanol." Journal of Catalysis 315(1):15-24.  doi:10.1016/j.jcat.2014.04.013
  • Mei D, VA Glezakou, VMC Lebarbier, L Kovarik, H Wan, KO Albrecht, MA Gerber, RJ Rousseau, and RA Dagle. 2014. "Highly Active and Stable MgAl2O4 Supported Rh and Ir Catalysts for Methane Steam Reforming: A Combined Experimental and Theoretical Study." Journal of Catalysis 316:11-23.  doi:10.1016/j.jcat.2014.04.021
  • Muntifering BR, RC Pond, L Kovarik, ND Browning, and P Muller. 2014. "Intra-variant Substructure in Ni-Mn-Ga Martensite: Conjugation Boundaries ." Acta Materialia 71:255-263.  doi:10.1016/j.actamat.2014.03.018
  • Xin H, S Alayoglu, R Tao, A Genc, CM Wang, L Kovarik, EA Stach, LW Wang, M Salmeron, GA Somorjai, and H Zheng. 2014. "Revealing the Atomic Restructuring of Pt-Co Nanoparticles." Nano Letters 14(6):3203-3207.  doi:10.1021/nl500553a


  • Sun J, AM Karim, H Zhang, L Kovarik, XS Li, A Hensley, JS McEwen, and Y Wang. 2013. "Carbon-Supported bimetallic Pd-Fe catalysts for vapor-phase hydrodeoxygenation of guaiacol." Journal of Catalysis 306(1):47-57.  doi:10.1016/j.jcat.2013.05.020
  • Wang CM, TC Kaspar, V Shutthanandan, AG Joly, L Kovarik, BW Arey, M Gu, A Devaraj, BD Wirth, and RJ Kurtz. 2013. "Structure And Radiation Damage Behavior Of Epitaxial CrxMo1-x Alloy Thin Films On MgO." Journal of Nuclear Materials 437(1-3):55-61.  doi:10.1016/j.jnucmat.2013.01.345
  • Arey BW, L Kovarik, O Qafoku, Z Wang, NJ Hess, and AR Felmy. 2013. "Identification of Fragile Microscopic Structures during Mineral Transformations in Wet Supercritical CO2." Microscopy and Microanalysis 19(2):268-275.  doi:10.1017/S1431927612014171
  • Fan D, R Anitori, BM Tebo, PG Tratnyek, JS Lezama Pacheco, RK Kukkadapu, MH Engelhard, ME Bowden, L Kovarik, and BW Arey. 2013. "Reductive Sequestration Of Pertechnetate (99TcO4-) By Nano Zerovalent Iron (nZVI) Transformed By Abiotic Sulfide." Environmental Science & Technology 47(10):5302-5310.  doi:10.1021/es304829z
  • Genc A, L Kovarik, M Gu, H Cheng, P Plachinda, L Pullan, B Freitag, and CM Wang. 2013. "XEDS STEM Tomography For 3D Chemical Characterization Of Nanoscale Particles." Ultramicroscopy 131:24-32.  doi:10.1016/j.ultramic.2013.03.023
  • Jagielski J, PA Jozwik, I Jozwik Biala, L Kovarik, BW Arey, J Gaca, and W Jiang. 2013. "RBS/C, HRTEM and HRXRD study of damage accumulation in irradiated SrTiO3." Radiation Effects and Defects in Solids 168(6):442-449.  doi:10.1080/10420150.2013.787796
  • Jiang W, L Kovarik, and TM Nenoff. 2013. "Chemical and Charge Imbalance Induced by Radionuclide Decay: Effects on Waste Form Structure." In Separations and Waste Forms Research and Development FY 2013 Accomplishments Report, vol. INL/EXT-13-30961, pp. 122-127.  Idaho National Laboratory, Idaho Falls, ID. 
  • Jozwik Biala I, JK Jagielski, BW Arey, L Kovarik, G Sattonay, A Debelle, S Mylonas, I Monnet, and L Thome. 2013. "Effect of combined local variations in elastic and inelastic energy losses on the morphology of tracks in ion-irradiated materials." Acta Materialia 61(12):4669-4675.  doi:10.1016/j.actamat.2013.04.037
  • Jozwik PA, N Sathish, L Nowicki, J Jagielski, AW Turos, L Kovarik, BW Arey, V Shutthanandan, W Jiang, J Dyczewski, and A Barcz. 2013. "Analysis of Crystal Lattice Deformation by Ion Channeling." Acta Physica Polonica. Series A: General Physics, Physics of Condensed Matter, Optics and Quantum Electronics, Atomic and Molecular Physics, Applied Physics 123(5):828-830.  doi:10.12693/APhysPolA.123.828
  • Kovarik L, A Genc, CM Wang, A Qiu, CHF Peden, J Szanyi, and JH Kwak. 2013. "Tomography and High-Resolution Electron Microscopy Study of Surfaces and Porosity in a Plate-Like ?-Al2O3." Journal of Physical Chemistry C 117(1):179-186.  doi:10.1021/jp306800h
  • Kwak JH, L Kovarik, and J Szanyi. 2013. "CO2 Reduction on Supported Ru/Al2O3 Catalysts: Cluster Size Dependence of Product Selectivity." ACS Catalysis 3(11):2449-2455.  doi:10.1021/cs400381f
  • Kwak JH, L Kovarik, and J Szanyi. 2013. "Heterogeneous Catalysis on Atomically Dispersed Supported Metals: CO2 Reduction on Multifunctional Pd Catalysts." ACS Catalysis 3(9):2094-2100.  doi:10.1021/cs4001392
  • Li WZ, L Kovarik, D Mei, J Liu, Y Wang, and CHF Peden. 2013. "Stable platinum nanoparticles on specific MgAl2O4 spinel facets at high temperatures in oxidizing atmospheres." Nature Communications 4:Article No. 2481.  doi:10.1038/ncomms3481
  • McCloy JS, W Jiang, TC Droubay, T Varga, L Kovarik, JA Sundararajan, M Kaur, Y Qiang, E Burks, and K Liu. 2013. "Ion irradiation of Fe-Fe oxide core-shell nanocluster films: Effect of interface on stability of magnetic properties." Journal of Applied Physics 114(8):083903:1-9.  doi:10.1063/1.4818309
  • Mei D, VMC Lebarbier, RJ Rousseau, VA Glezakou, KO Albrecht, L Kovarik, MD Flake, and RA Dagle. 2013. "Comparative Investigation of Benzene Steam Reforming over Spinel Supported Rh and Ir Catalysts." ACS Catalysis 3(6):1133-1143.  doi:10.1021/cs4000427
  • Yang F, DR Coughlin, PJ Phillips, L Yang, A Devaraj, L Kovarik, RD Noebe, and MJ Mills. 2013. "Structure Analysis of a Precipitate Phase in an Ni-Rich High Temperature NiTiHf Shape Memory Alloy." Acta Materialia 61(9):3335-3346.  doi:10.1016/j.actamat.2013.02.023


  • Kovarik L, and MJ Mills. 2012. "Ab Initio Analysis of Guinier-Preston-Bagaryatsky Zone Nucleation in Al-Cu-Mg Alloys." Acta Materialia 60(9):3861-3872.  doi:10.1016/j.actamat.2012.03.044
  • Qafoku O, L Kovarik, RK Kukkadapu, ES Ilton, BW Arey, J Tucek, and AR Felmy. 2012. "Fayalite Dissolution and Siderite Formation in Water-Saturated Supercritical CO2." Chemical Geology 332-333:124-135.  doi:10.1016/j.chemgeo.2012.09.028
  • Wang CM, X Li, Z Wang, W Xu, J Liu, F Gao, L Kovarik, J Zhang, J Howe, DJ Burton, Z Liu, X Xiao, S Thevuthasan, and DR Baer. 2012. "In Situ TEM Investigation of Congruent Phase Transition and Structural Evolution of Nanostructured Silicon/Carbon Anode for Lithium Ion Batteries." Nano Letters 12(3):1624-1632.  doi:10.1021/nl204559u
  • Benavidez AD, L Kovarik, A Genc, N Agrawal, EM Larsson, TW Hansen, AM Karim, and AK Datye. 2012. "Environmental Transmission Electron Microscopy Study of the Origins of Anomalous Particle Size Distributions in Supported Metal Catalysts." ACS Catalysis 2(11):2349-2356.  doi:10.1021/cs3005117
  • Brandes MC, L Kovarik, MK Miller, and MJ Mills. 2012. "Morphology, structure, and chemistry of nanoclusters in a mechanically alloyed nanostructured ferritic steel." Journal of Materials Science 47(8):3913-3923.  doi:10.1007/s10853-012-6249-x
  • Ilton ES, JS Lazama Pacheco, JR Bargar, Z Shi, J Liu, L Kovarik, MH Engelhard, and AR Felmy. 2012. "Reduction of U(VI) Incorporated in the Structure of Hematite." Environmental Science & Technology 46(17):9428-9436.  doi:10.1021/es3015502
  • Jiang W, RM Van Ginhoven, L Kovarik, JE Jaffe, and BW Arey. 2012. "Superlattice Structure and Precipitates in O+ and Zr+ Ion Coimplanted SrTiO3: a Model Waste Form for 90Sr." Journal of Physical Chemistry C 116(31):16709-16715.  doi:10.1021/jp301343b
  • Jozwik Biala I, JK Jagielski, L Thome, BW Arey, L Kovarik, G Sattonay, A Debelle, and I Monnet. 2012. "HRTEM study of track evolution in 120-MeV U irradiated Gd2Ti2O7." Nuclear Instruments and Methods in Physics Research. Section B, Beam Interactions with Materials and Atoms 286:258-261.  doi:10.1016/j.nimb.2011.12.040
  • Karim AM, CJ Howard, BQ Roberts, L Kovarik, L Zhang, DL King, and Y Wang. 2012. "In Situ X-ray Absorption Fine Structure Studies on the Effect of pH on Pt Electronic Density during Aqueous Phase Reforming of Glycerol." ACS Catalysis 2(11):2387-2394.  doi:10.1021/cs3005049
  • Kwak JH, RG Tonkyn, DN Tran, D Mei, SJ Cho, L Kovarik, JH Lee, CHF Peden, and J Szanyi. 2012. "Size-dependent catalytic performance of CuO on ?-Al2O3: NO reduction versus NH3 oxidation." ACS Catalysis 2(7):1432-1440.  doi:10.1021/cs3002463
  • Lebarbier VMC, RA Dagle, L Kovarik, JA Lizarazo Adarme, DL King, and DR Palo. 2012. "Synthesis of Methanol and Dimethyl Ether from Syngas over Pd/ZnO/Al2O3 Catalysts." Catalysis Science & Technology 2(10):2116-2127.  doi:10.1039/C2CY20315D
  • Lemmon JP, E Polikarpov, WD Bennett, and L Kovarik. 2012. "Thin Metal Oxide Films to Modify a Window Layer in CdTe-Based Solar Cells for Improved Performance." Applied Physics Letters 100(21):Article No, 213908.  doi:10.1063/1.4722921
  • Peretyazhko T, JM Zachara, RK Kukkadapu, SM Heald, IV Kutnyakov, CT Resch, BW Arey, CM Wang, L Kovarik, JL Phillips, and DA Moore. 2012. "Pertechnetate (TcO4-) reduction by reactive ferrous iron forms in naturally anoxic, redox transition zone sediments from the Hanford Site, USA." Geochimica et Cosmochimica Acta 92:48-66. 
  • Phillips PJ, M De Graef, L Kovarik, A Agrawal, W Windl, and MJ Mills. 2012. "Atomic-resolution defect contrast in low angle annular dark-field STEM." Ultramicroscopy 116:47-55.  doi:10.1016/j.ultramic.2012.03.013
  • Rajachidambaram MS, T Varga, L Kovarik, RP Sanghavi, V Shutthanandan, S Thevuthasan, S Han, C Chang, and GS Herman. 2012. "Formation of zinc oxide films using submicron zinc particle dispersions." Journal of Vacuum Science and Technology B--Microelectronics and Nanometer Structures 30(4):Article No. 041805.  doi:10.1116/1.4731255
  • Vorontsov VA, L Kovarik, MJ Mills, and C Rae. 2012. "High Resolution Electron Microscopy Of Dislocation Ribbons In A CMSX-4 Superalloy single crystal." Acta Materialia 60(12):4673-4996.  doi:10.1016/j.actamat.2012.05.014
  • Wu T, D Childers, C Gomez, AM Karim, N Schweitzer, A Kropf, H Wang, TB Bolin, Y Hu, L Kovarik, R Meyer, and JT Miller. 2012. "General Method for Determination of the Surface Composition in Bimetallic Nanoparticle Catalysts from the L Edge X-ray Absorption Near-Edge Spectra." ACS Catalysis 2(11):2433-2443.  doi:10.1021/cs3004566
  • Xiao J, X Chen, PV Sushko, ML Sushko, L Kovarik, J Feng, Z Deng, J Zheng, GL Graff, Z Nie, D Choi, J Liu, J Zhang, and MS Whittingham. 2012. "High-Performance LiNi0.5Mn1.5O4 Spinel Controlled by Mn3+ Concentration and Site Disorder." Advanced Materials 24(16):2109-2116.  doi:10.1002/adma.201104767
  • Xiao L, Y Cao, J Xiao, W Wang, L Kovarik, Z Nie, and J Liu. 2012. "High capacity, reversible alloying reactions in SnSb/C nanocomposites for Na-ion battery applications." Chemical Communications 48(27):3321-3323.  doi:10.1039/C2CC17129E
  • Yang F, L Kovarik, PJ Phillips, RD Noebe, and MJ Mills. 2012. "Characterizations Of Precipitate Phases In a Ti-Ni-Pd Alloy." Scripta Materialia 67(2):145-148.  doi:10.1016/j.scriptamat.2012.04.003
  • Zheng J, J Xiao, X Yu, L Kovarik, M Gu, F Omenya, X Chen, XQ Yang, J Liu, GL Graff, MS Whittingham, and J Zhang. 2012. "Enhanced Li+ ion transport in LiNi0.5Mn1.5O4 through Control of Site Disorder." Physical Chemistry Chemical Physics. PCCP 14(39):13515-13521. 


  • Kovarik L, and MJ Mills. 2011. "Structural Relationship Between One-Dimensional Crystals of Guinier-Preston-Bagaryatsky Zones in Al-Cu-Mg Alloys." Scripta Materialia 64(11):999-1002.  doi:10.1016/j.scriptamat.2011.01.033
  • Arey BW, L Kovarik, Z Wang, and AR Felmy. 2011. "Investigation of Mineral Transformations in Wet Supercritical CO2 by Electron Microscopy." Microscopy and Microanalysis 17(Suppl S2):1928-1929.  doi:10.1017/S1431927611010518
  • Bowker RH, MC Smith, M Pease, KM Slenkamp, L Kovarik, and ME Bussell. 2011. "Synthesis and Hydrodeoxygenation Properties of Ruthenium Phosphide Catalysts." ACS Catalysis 1(8):917-922.  doi:10.1021/cs200238v
  • Lea AS, BC Kabius, BW Arey, L Kovarik, CM Wang, G Orr, I Lyubinetsky, and RR Carper. 2011. "Quietly Building Capabilities: New Instruments, Expertise, "Quiet Wing" Available at DOE User Facility." Microscopy Today 19(5):48-53.  doi:10.1017/S1551929511000964
  • Sanghavi RP, R Devanathan, MI Nandasiri, SVNT Kuchibhatla, L Kovarik, S Thevuthasan, and S Prasad. 2011. "Integrated experimental and modeling study of the ionic conductivity of samaria-doped ceria thin films." Solid State Ionics 204-205:13-19.  doi:10.1016/j.ssi.2011.10.007
  • Unocic RR, N Zhou, L Kovarik, C Shen, Y Wang, and MJ Mills. 2011. "Dislocation decorrelation and relationship to deformation microtwins during creep of a y' precipitate strengthened Ni-based superalloy." Acta Materialia 59(19):7325-7339.  doi:10.1016/j.actamat.2011.07.069

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