Faculty

Jonah Erlebacher

Professor

Secondary Appointment: Chemical and Biomolecular Engineering

Research Interests

Nanomaterials and Materials for Energy

Jonah Erlebacher is recognized for his advances in materials for energy technologies, computational materials science, and new methods for manufacturing of nanostructured metals.

Erlebacher joined the faculty of the Whiting School in 2000, and also holds a secondary appointment in the Department of Chemical and Biomolecular Engineering. He is most well-known for his contributions to dealloying as a processing tool and dealloyed materials as functional materials for a wide variety of applications. Dealloying – selective dissolution from a multi-component material – is ubiquitous today, with dozens of groups working on the problem internationally and multiple conference symposia devoted to this subject alone. Dealloying is no longer seen as primarily a corrosion problem to be avoided, but instead as a flexible and wide-ranging processing tool used to make bulk amounts of nanostructured (porous) materials for advanced catalysts, (bio)sensing, and energy technologies such as batteries, supercapacitors, and hydrogen fuel cells. The applications for this class of this materials is growing daily.

Erlebacher’s current research includes expanding our understanding of materials processing, using variations of dealloying to create ultra-high strength nanocomposite metals that may survive extreme environments, and discovering next-generation fuel cell catalysts. In addition, his team is developing new chemistry to de-carburize natural gas, simultaneously generating hydrogen and high-value carbon materials from fossil fuels, without co-generation of greenhouse gasses.

Erlebacher holds six patents for processes encompassing the creation of nanoporous gold leaf, advanced fuel cell catalysts, and methane decomposition to hydrogen and solid carbon. He has also developed computer models to model the morphological evolution of nanostructured materials over time.

His numerous awards include the Johns Hopkins University Inaugural Gordon Croft Investment Faculty Scholar, the JHU William H. Huggins Excellence in Teaching Award, Whiting School of Engineering and a 2001 National Science Foundation CAREER Faculty Young Investigator Award. Widely published, he co-authored Nanoporous Gold: From an Ancient Technology to a High-tech Material (Royal Society for Chemistry, 2012) and is a sought-after presenter at academic conferences, industry and government seminars around the world. He is a member of the Materials Research Society, the Electrochemical Society, TMS, the American Physical Society, and the American Association for Crystal Growth and Epitaxy. His current service activities include membership on the American Chemical Society Committee on the Petroleum Research Fund and meeting chair for the 2019 International Materials Research Congress in Cancun, Mexico. In addition to past service as associate editor of the Journal of the Electrochemical Society, he has led or co-led several conferences, among them the “Emerging Methods of Synthesis at all Length Scales,” for the Department of Energy’s 2016 Basic Research Needs Workshop on Synthesis, International Symposia on Nanoporosity Formation by Alloy Corrosion (2016 and 2017), and  the 2009 Gordon Research Conference on Thin Film and Crystal Growth Mechanisms (chair).

Erlebacher served as Chair for the Department of Materials Science & Engineering from 2014 to 2020.

Erlebacher holds a BS in physics and history of art, summa cum laude, from Yale University (1991), and a PhD in applied physics from Harvard University (1999).

Education
  • Ph.D. 1999, Harvard University
Experience
  • 2015 - Present:  CSO, EtCH
  • 2001 - Present:  Faculty Mentor, Unspecified
  • 1999 - 2000:  Postdoctoral Fellow, Harvard University
  • 1993 - 1999:  Research Assistant, Harvard University
Research Areas
  • Computational Materials Science and Solid State Physics
  • Materials for energy technology
  • Nanoporous Metals via Dealloying
  • Physics of Pattern Forming Instabilities during Crystal Growth and Dissolution
Awards
  • 2019:  Judge, Regeneron Science Talent Search
  • 2012:  William H. Huggins Excellence in Teaching Award (Whiting School of Engineering)
  • 2010:  Invited Participant, NAE Indo-American Frontiers of Engineering
  • 2010:  Invited Participant, TMS Energy Materials Technical Working Groups Workshop
  • 2009:  Chair, Gordon Research Conference on Thin Film and Crystal Growth Mechanisms
  • 2008:  Inaugural Gordon Croft Investment Faculty Scholar
  • 2007:  Vice-chair, Gordon Research Conference on Thin Film and Crystal Growth Mechanisms
  • 2001:  NSF CAREER Faculty Young Investigator Award
  • 1996:  Materials Research Society Graduate Student Award
  • 1994:  National Defense Science and Engineering Graduate Fellowship
  • 1992:  Wolman Fellowship
  • Over the last three years, the Erlebacher group has been studying the morphological stability (shape) of nanoparticles. The Erlebacher group focuses on the motion of atoms at interfaces and surfaces and understands that in many environments the static picture of nanoparticles is wildly inaccurate.

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  • Through experiments and simulations we explore the underlying mechanisms involved in dealloying, as well as in the post processing of porous metals. The goal is to further our understanding of dealloying and develop new porous materials.

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  • Developing new catalysts for the oxygen reduction reaction in fuel cells.

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Journal Articles
  • Greenidge G, Erlebacher J (2020).  Porous graphite fabricated by liquid metal dealloying of silicon carbide.  Carbon.  165.  45-54.
  • Gaskey B, McCue I, Chuang A, Erlebacher J (2019).  Self-assembled porous metal-intermetallic nanocomposites via liquid metal dealloying.  Acta Materialia.  164.  293-300.
  • Erlebacher JD, L. Lai, B. Gaskey, A. Chuang, A. Karma (2019).  Topological Control of Liquid-Metal-Dealloyed Structures.  Nature Communications.
  • Erlebacher J, Kubal J, Zeng Z, Greeley J, Struk K, Steinbach AJ (2019).  Kinetic Monte Carlo simulations of electrochemical oxidation and reduction of Pt(111).  Journal of the Electrochemical Society.  166(16).  H888-H896.
  • Erlebacher JD, J. Kubal, Z. Zeng, J. Greeley, K. Struk, A.J. Steinbach (2019).  Kinetic Monte Carlo Simulations of Electrochemical Oxidation and Reduction of Pt(111).  Electrochemical Society.  166.  H888-H896.
  • Erlebacher JD, Y. Zeng, B. Gaskey, E. Benn, I. McCue, G. Greenidge (2019).  Electrochemical Dealloying with Simultaneous Phase Separation.  Acta Materialia.  171.  8-17.
  • Erlebacher JD, B. Gaskey, I. McCue, A. Chuang (2019).  Self-Assembled Porous Metal-Intermetallic Nanocomposites via Liquid Metal Dealloying.  Acta Materialia.  164.  293-300.
  • Lu Z, Li C, Han J, Zhang F, Liu P, Wang H, Wang Z, Cheng C, Chen L, Hirata A, Fujita T, Erlebacher J, Chen M (2018).  Three-dimensional bicontinuous nanoporous materials by vapor phase dealloying.  Nature Communications.  9(1).
  • Erlebacher JD, Zeng Y, Gaskey B, Benn E, McCue I, Greenidge G, Livi K, Zhang X, Jiang J (2018).  Electrochemical Dealloying with Simultaneous Phase Separation.  submitted to Acta Mat..
  • Erlebacher JD, Cullen D.A, Myers D, Greeley J, Thoma G, Steinbach A.J (2018).  Exploring the activity and stability of Pt-based catalysts through analytical electron microscopy.  Microscopy and Microanalysis.  24.  276.
  • McCue I, Karma A, Erlebacher J (2018).  Pattern formation during electrochemical and liquid metal dealloying.  MRS Bulletin.  43(1).  27-34.
  • Kim YT, Lopes PP, Park SA, Lee AY, Lim J, Lee H, Back S, Jung Y, Danilovic N, Stamenkovic V, Erlebacher J, Snyder J, Markovic NM (2017).  Balancing activity, stability and conductivity of nanoporous core-shell iridium/iridium oxide oxygen evolution catalysts.  Nature Communications.  8(1).
  • Benn EE, Gaskey B, Erlebacher JD (2017).  Suppression of Hydrogen Evolution by Oxygen Reduction in Nanoporous Electrocatalysts.  Journal of the American Chemical Society.  139(10).  3663-3668.
  • Pounds T, Sieradzki K, Erlebacher J, Cammarata RC (2017).  Effects of acetic acid, tartaric acid and Pb UPD on Cu electrodeposition in sub-micron trenches.  Journal of the Electrochemical Society.  164(6).  D307-D314.
  • McCue I, Gaskey B, Crawford B, Erlebacher J (2016).  Local heterogeneity in the mechanical properties of bicontinuous composites made by liquid metal dealloying.  Applied Physics Letters.  109(23).
  • McCue I, Gaskey B, Geslin PA, Karma A, Erlebacher J (2016).  Kinetics and morphological evolution of liquid metal dealloying.  Acta Materialia.  115.  10-23.
  • McCue I, Benn E, Gaskey B, Erlebacher J (2016).  Dealloying and Dealloyed Materials.  Annual Review of Materials Research.  46.  263-286.
  • Seita M, Volpi M, Patala S, McCue I, Schuh CA, Diamanti MV, Erlebacher J, Demkowicz MJ (2016).  A high-throughput technique for determining grain boundary character non-destructively in microstructures with through-thickness grains.  npj Computational Materials.  2.
  • Liu P, Guan P, Hirata A, Zhang L, Chen L, Wen Y, Ding Y, Fujita T, Erlebacher J, Chen M (2016).  Visualizing Under-Coordinated Surface Atoms on 3D Nanoporous Gold Catalysts.  Advanced Materials.  28(9).  1753-1759.
  • McCue I, Ryan S, Hemker K, Xu X, Li N, Chen M, Erlebacher J (2016).  Size Effects in the Mechanical Properties of Bulk Bicontinuous Ta/Cu Nanocomposites Made by Liquid Metal Dealloying.  Advanced Engineering Materials.  18(1).  46-50.
  • Geslin PA, McCue I, Gaskey B, Erlebacher J, Karma A (2015).  Topology-generating interfacial pattern formation during liquid metal dealloying.  Nature Communications.  6.
  • Benn E, Uvegi H, Erlebacher J (2015).  Characterization of nanoporous metal-ionic liquid composites for the electrochemical oxygen reduction reaction.  Journal of the Electrochemical Society.  162(10).  H759-H766.
  • Steinbach AJ, Van Der Vliet D, Hester AE, Erlebacher J, Duru C, Davy I, Kuznia M, Cullen DA (2015).  Recent progress in Nanostructured Thin Film (NSTF) ORR electrocatalyst development for PEM fuel cells.  ECS Transactions.  69(17).  291-301.
  • Li X, Chen Q, McCue I, Snyder J, Crozier P, Erlebacher J, Sieradzki K (2014).  Dealloying of noble-metal alloy nanoparticles.  Nano Letters.  14(5).  2569-2577.
  • Erlebacher J, Margetis D (2014).  Mechanism of hollow nanoparticle formation due to shape fluctuations.  Physical Review Letters.  112(15).
  • Snyder J, Livi K, Erlebacher J (2013).  Oxygen reduction reaction performance of [MTBD][beti]-encapsulated nanoporous NiPt alloy nanoparticles.  Advanced Functional Materials.  23(44).  5494-5501.
  • Livi KJT, Schaffer B, Azzolini D, Seabourne CR, Hardcastle TP, Scott AJ, Hazen RM, Erlebacher JD, Brydson R, Sverjensky DA (2013).  Atomic-scale surface roughness of rutile and implications for organic molecule adsorption.  Langmuir.  29(23).  6876-6883.
  • Kertis F, Khurshid S, Okman O, Kysar JW, Govada L, Chayen N, Erlebacher J (2012).  Heterogeneous nucleation of protein crystals using nanoporous gold nucleants.  Journal of Materials Chemistry.  22(41).  21928-21934.
  • Erlebacher J, McCue I (2012).  Geometric characterization of nanoporous metals.  Acta Materialia.  60(17).  6164-6174.
  • McCue I, Snyder J, Li X, Chen Q, Sieradzki K, Erlebacher J (2012).  Apparent inverse Gibbs-Thomson effect in dealloyed nanoporous nanoparticles.  Physical Review Letters.  108(22).
  • Snyder J, McCue I, Livi K, Erlebacher J (2012).  Structure/Processing/Properties relationships in nanoporous nanoparticles as applied to catalysis of the cathodic oxygen reduction reaction.  Journal of the American Chemical Society.  134(20).  8633-8645.
  • Fujita T, Guan P, McKenna K, Lang X, Hirata A, Zhang L, Tokunaga T, Arai S, Yamamoto Y, Tanaka N, Ishikawa Y, Asao N, Yamamoto Y, Erlebacher J, Chen M (2012).  Atomic origins of the high catalytic activity of nanoporous gold.  Nature Materials.  11(9).  775-780.
  • Erlebacher J, Newman C, Sieradzki K (2012).  Fundamental physics and chemistry of nanoporosity evolution during dealloying.  RSC Nanoscience and Nanotechnology.  11-29.
  • Snyder J, Erlebacher J (2011).  The active surface area of nanoporous metals during oxygen reduction.  ECS Transactions.  41(1).  1021-1030.
  • Erlebacher J (2011).  Mechanism of coarsening and bubble formation in high-genus nanoporous metals.  Physical Review Letters.  106(22).
  • Moffat TP, Erlebacher J, Newman RC (2010).  ECS Transactions: Preface.  ECS Transactions.  28(25).
  • Kertis F, Snyder J, Govada L, Khurshid S, Chayen N, Erlebacher J (2010).  Structure/processing relationships in the fabrication of nanoporous gold.  JOM.  62(6).  50-56.
  • Snyder J, Erlebacher J (2010).  Kinetics of crystal etching limited by terrace dissolution.  Journal of the Electrochemical Society.  157(3).
  • Snyder J, Fujita T, Chen MW, Erlebacher J (2010).  Oxygen reduction in nanoporous metal-ionic liquid composite electrocatalysts.  Nature Materials.  9(11).  904-907.
  • Erlebacher J, Snyder J (2009).  Dealloyed nanoporous metals for PEM fuel cell catalysis.  ECS Transactions.  25(1 PART 1).  603-612.
  • Snyder JD, Erlebacher JD (2009).  Electrochemical measurement of the surface alloying kinetics of underpotentially deposited Ag on Au(111).  Langmuir.  25(16).  9596-9604.
  • Artymowicz DM, Erlebacher J, Newman RC (2009).  Relationship between the parting limit for de-alloying and a particular geometric high-density site percolation threshold.  Philosophical Magazine.  89(21).  1663-1693.
  • Erlebacher J (2009).  Chapter 2 Materials Science of Hydrogen/Oxygen Fuel Cell Catalysis.  Solid State Physics - Advances in Research and Applications.  61.  77-141.
  • Erlebacher J, Seshadri R (2009).  Hard materials with tunable porosity.  MRS Bulletin.  34(8).  561-568.
  • Erlebacher JD (2009).  Materials Science of Proton Exchange Membrane Fuel Cell Catalysts.  Solid State Physics.  61.  77-141.
  • Snyder J, Asanithi P, Dalton AB, Erlebacher J (2008).  Stabilized nanoporous metals by dealloying ternary alloy precursors.  Advanced Materials.  20(24).  4883-4886.
  • Mathur A, Erlebacher J (2008).  Effects of substrate shape, curvature and roughness on thin heteroepitaxial films of Pt on Au(1 1 1).  Surface Science.  602(17).  2863-2875.
  • Snyder J, Livi K, Erlebacher J (2008).  Dealloying silver/gold alloys in neutral silver nitrate solution: Porosity evolution, surface composition, and surface oxides.  Journal of the Electrochemical Society.  155(8).
  • Fujita T, Qian LH, Inoke K, Erlebacher J, Chen MW (2008).  Three-dimensional morphology of nanoporous gold.  Applied Physics Letters.  92(25).
  • Ahl S, Cameron PJ, Liu J, Knoll W, Erlebacher J, Yu F (2008).  A comparative plasmonic study of nanoporous and evaporated gold films.  Plasmonics.  3(1).  13-20.
  • Erlebacher JD, Fujita T, Qian L, Inoke K, M. Chen (2008).  Quantitative Transmission Electron Tomography of Nanoporous Gold.  Applied Physics Letters.  92.
  • Zeis R, Lei T, Sieradzki K, Snyder J, Erlebacher J (2008).  Catalytic reduction of oxygen and hydrogen peroxide by nanoporous gold.  Journal of Catalysis.  253(1).  132-138.
  • Artymowicz DM, Newman RC, Erlebacher J (2007).  Insights into the parting limit for de-alloying from revision of atomistic considerations.  ECS Transactions.  3(31).  499-506.
  • Zeis R, Mathur A, Fritz G, Lee J, Erlebacher J (2007).  Platinum-plated nanoporous gold: An efficient, low Pt loading electrocatalyst for PEM fuel cells.  Journal of Power Sources.  165(1).  65-72.
  • Mathur A, Erlebacher J (2007).  Size dependence of effective Young's modulus of nanoporous gold.  Applied Physics Letters.  90(6).
  • Rugolo J, Erlebacher J, Sieradzki K (2006).  Length scales in alloy dissolution and measurement of absolute interfacial free energy.  Nature Materials.  5(12).  946-949.
  • Yu F, Ahl S, Caminade AM, Majoral JP, Knoll W, Erlebacher J (2006).  Simultaneous excitation of propagating and localized surface plasmon resonance in nanoporous gold membranes.  Analytical Chemistry.  78(20).  7346-7350.
  • Parida S, Kramer D, Volkert CA, Rösner H, Erlebacher J, Weissmüller J (2006).  Volume change during the formation of nanoporous gold by dealloying.  Physical Review Letters.  97(3).
  • Drews TO, Radisic A, Erlebacher J, Braatz RD, Searson PC, Alkire RC (2006).  Stochastic simulation of the early stages of kinetically limited electrodeposition.  Journal of the Electrochemical Society.  153(6).
  • Mathur A, Brown AD, Erlebacher J (2006).  Self-ordering of colloidal particles in shallow nanoscale surface corrugations.  Langmuir.  22(2).  582-589.
  • Erlebacher J, Brown AD (2005).  Nonlinear stabilization mechanisms in amplitude saturation during sputter ripple formation on silicon.  Materials Research Society Symposium Proceedings.  849.  59-68.
  • Brown AD, Erlebacher J (2005).  Temperature and fluence effects on the evolution of regular surface morphologies on ion-sputtered Si(111).  Physical Review B - Condensed Matter and Materials Physics.  72(7).
  • Brown AD, Erlebacher J, Chan WL, Chason E (2005).  Transient topographies of ion patterned Si(111).  Physical Review Letters.  95(5).
  • Ding Y, Mathur A, Chen M, Erlebacher J (2005).  Epitaxial casting of nanotubular mesoporous platinum.  Angewandte Chemie - International Edition.  44(26).  4002-4006.
  • George HB, Brown AD, McGrath MR, Erlebacher J, Aziz MJ (2005).  Quantifying the order of spontaneous ripple patterns on ion-irradiated Si(111).  Materials Research Society Symposium Proceedings.  908.  1-6.
  • Erlebacher J (2004).  An atomistic description of dealloying porosity evolution, the critical potential, and rate-limiting behavior.  Journal of the Electrochemical Society.  151(10).
  • Ding Y, Kim YJ, Erlebacher J (2004).  Nanoporous gold leaf: "Ancient technology "/advanced material.  Advanced Materials.  16(21).  1897-1900.
  • Ding Y, Chen M, Erlebacher J (2004).  Metallic mesoporous nanocomposites for electrocatalysis.  Journal of the American Chemical Society.  126(22).  6876-6877.
  • Ji C, Oskam G, Ding Y, Erlebacher JD, Wagner AJ, Searson PC (2003).  Deposition of AuxAg1-x/AuyAg1-y multilayers and multisegment nanowires.  Journal of the Electrochemical Society.  150(8).
  • Ding Y, Erlebacher J (2003).  Nanoporous metals with controlled multimodal pore size distribution.  Journal of the American Chemical Society.  125(26).  7772-7773.
  • Erlebacher J, Sieradzki K (2003).  Pattern formation during dealloying.  Scripta Materialia.  49(10 SPEC.).  991-996.
  • Brown AD, George HB, Aziz MJ, Erlebacher J (2003).  One and two-dimensional pattern formation on ion sputtered silicon.  Materials Research Society Symposium - Proceedings.  792.  315-320.
  • Sieradzki K, Dimitrov N, Movrin D, McCall C, Vasiljevic N, Erlebacher J (2002).  The dealloying critical potential.  Journal of the Electrochemical Society.  149(8).
  • Erlebacher JD, Aziz MJ, Chason E, Sinclair MB, Floro JA (2002).  Reply: Erlebacher, et al..  Physics Review Letter.  88.
  • Chason E, Erlebacher J, Aziz MJ, Floro JA, Sinclair MB (2001).  Dynamics of pattern formation during low-energy ion bombardment of Si(0 0 1).  Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms.  178(1-4).  55-61.
  • Erlebacher J, Aziz MJ, Karma A, Dimitrov N, Sieradzki K (2001).  Evolution of nanoporosity in dealloying.  Nature.  410(6827).  450-453.
  • Erlebacher J, Aziz MJ, Chason E, Sinclair MB, Floro JA (2000).  Nonclassical smoothening of nanoscale surface corrugations.  Physical Review Letters.  84(25).  5800-5803.
  • Erlebacher J (2000).  Nonlinear amplitude evolution during spontaneous patterning of ion-bombarded Si(001).  Journal of Vacuum Science and Technology A: Vacuum, Surfaces and Films.  18(1).  115-120.
  • Newman RC, Corcoran SG, Erlebacher J, Aziz MJ, Sieradzki K (1999).  Alloy corrosion.  MRS Bulletin.  24(7).  24-28.
  • Erlebacher J, Aziz MJ, Chason E, Sinclair MB, Floro JA (1999).  Spontaneous pattern formation on ion bombarded Si(001).  Physical Review Letters.  82(11).  2330-2333.
  • Erlebacher JD, Aziz MJ (1997).  Ion-sputter induced rippling of Si(111).  Materials Research Society Symposium - Proceedings.  440.  461-466.
  • Erlebacher JD, Aziz MJ (1997).  Surface relaxation mechanisms in the morphological equilibration of crystal surfaces.  Materials Research Society Symposium - Proceedings.  440.  59-64.
  • Erlebacher JD, Aziz MJ (1997).  Morphological equilibration of rippled and dimpled crystal surfaces: The role of terrace-width fluctuations.  Surface Science.  374(1-3).  427-442.
  • Erlebacher J, Sieradzki K, Searson PC (1994).  Computer simulations of pore growth in silicon.  Journal of Applied Physics.  76(1).  182-187.
  • Erlebacher JD, Cheng B, Hobbs JD, Debrunner PG, Shelnutt JA, Scheidt WR (1994).  An Unusual Near-Eclipsed Porphyrin Ring Orientation in Two Crystalline Forms of m-Oxo[bis((octaethylporphyrinato)iron(III))]. Structural and Molecular Mechanics Studies.  Inorganic Chemistry.  34.  102-110.
  • Kaxiras E, Erlebacher J (1994).  Adatom diffusion by orchestrated exchange on semiconductor surfaces.  Physical Review Letters.  72(11).  1714-1717.
  • Erlebacher J, Searson PC, Sieradzki K (1993).  Computer simulations of dense-branching patterns.  Physical Review Letters.  71(20).  3311-3314.
  • Erlebacher JD, Rossi M, Zacharias D, Carrell HL, Ianucci B (1991).  The Crystal and Molecular Structure of Ellagic Acid Dihydrate: A Dietary Anti-Cancer Agent.  Carcinogenesis.  (12).  2227-2232.
  • Erlebacher JD, Carrell C, Carrell HL, Glusker JP (1988).  Structural Aspects of Metal Ion-Carboxylate Interactions.  Journal of American Chemisty.  (110).  8651-8656.
Book Chapters
  • Snyder J, Erlebacher J (2011).  The Active Surface Area of Nanoporous Metals during Oxygen Reduction.  Polymer Electrolyte Fuel Cells 11.  41.  1021-1030.
  • Erlebacher J (2009).  Materials Science of Hydrogen/Oxygen Fuel Cell Catalysis.  Solid State Physics.  61.  77-141.
  • Erlebacher JD (2004).  Dealloying of Binary Alloys: Evolution of Nanoporosity.  Dekker Encyclopedia of Nanoscience and Nanotechnology.  893-901.
Conference Proceedings
  • Erlebacher JD (2019).  Meeting Chair.  International Materials Science Congress (MRS).
  • "Synthesis and Applications of Porous Refractory Metal Membranes", Advanced Membranes Workshop.  Pennsylvania, United States of America (the).  December 17, 2019
  • "Carbon Dioxide-Free Hydrogen and Solid Carbon from Natural Gas via Metal Salt Intermediates", ARPA-E Methane Pyrolysis Cohort Meeting.  Houston Texas, United States of America (the).  December 9, 2019
  • "The Carbon Age: Prospects for Decreasing CO2 Emissions by Efficient Fossil Fuel Utilzation", JHU Faculty Forum.  United States of America (the).  May 13, 2019
  • "New Nanoarchitected Materials via Liquid Metal Dealloying", TMS.  United States of America (the).  March 13, 2019
  • "Ancillary Challenges in Dealloying", 3rd Annual Symposium on Nanoporosity Formation by Alloy Corrosion.  United States of America (the).  February 25, 2019
  • "Microstructure Evolution of Refractory Alloys During Powder-Based Dealloying", Fall MRS.  United States of America (the).  January 1, 2019
  • "Formation of Self-Organized Metallic Composites by Liquid Metal Dealloying", ICMAT (MRS Asia).  United States of America (the).  January 1, 2019
  • "Formation of Self-Organized Metallic Composites by Liquid Metal Dealloying", ICMAT (MRS Asia).  January 1, 2019
  • "TMS".  January 1, 2019
  • "3rd Annual Symposium on Nanoporosity Formation by Alloy Corrosion".  January 1, 2019
  • "Are We There Yet? Recent Insights into Fuel Cell Electrocatalysis using Dealloyed Nanoporous Metals".  December 7, 2018
  • "Engineering Nanoporous Metals for Improved Electrocatalysis", ISE Fisher Symposium.  Kloster Seeon, Germany.  May 1, 2018
  • "Oxide-Stabilized Nanoporous Ni-Pt for Enhanced Durabiloity in ORR Catalysis", ECS.  May 1, 2018
  • "Methane Decomposition to Carbon and Hydrogen using Nickel Salt Intermediates: Opportunities and Challenges in Natural Gas Utilization".  Billerica Massachusetts, United States of America (the).  January 19, 2018
  • "Are We There Yet? Recent Insights into Fuel Cell Electrocatalysis using Dealloyed Nanoporous Metals".  December 7, 2017
  • "Pre-Sequestration – A Concept for Generating Energy from Fossil Fuels without Carbon Dioxide", NAS-BRS Sackler Forum: Dealing with Carbon Dioxide at Scale,.  Chicheley Manor, United Kingdom of Great Britain and Northern Ireland (the).  October 18, 2017
  • "An argument for methane decomposition to hydrogen and solid carbon", ARPA-E Advanced Carbon Materials and Clean Hydrogen from Natural Gas Workshop.  Washington, D.C., United States of America (the).  September 21, 2017
  • "Transport and Activity in Dealloyed Nanoporous Electrocatalysts", International Society of Electrochemistry.  Providence Rhode Island, United States of America (the).  August 1, 2017
  • "Less is More : New Innovations and Applications for Materials made by Dealloying".  Maryland, United States of America (the).  June 6, 2017
  • "Less is More : New Innovations and Applications for Materials made by Dealloying", Spring MRS.  April 10, 2017
  • "Mechanically Robust Nanocomposites via Liquid Metal Dealloying", Spring MRS.  April 10, 2017
  • "Scale and Phase Evolution in Dealloyed Nanoporous Materials".  March 10, 2017
  • "Scale and Phase Evolution in Dealloyed Nanoporous Materials", AIMR Symposium.  February 1, 2017
  • "Recent Insights into Electrocatalysis Using Dealloyed Nanoporous Metals".  College Park MD, United States.  October 11, 2016
  • "Less is More: New Innovations and Applications for Materials Made by Dealloying".  University of Michigan.  October 6, 2016
  • "Anomalous Faceting in the Dealloying of Silicon Alloys", Second International Symposium on Nanoporous Materials by Alloy Corrosion.  Germany.  September 1, 2016
  • "Oxygen Reduction in Nanoporous Metals Under Proton Diffusion Limited Conditions", 229th ECS Meeting.  San Diego, CA.  May 30, 2016
  • "Functional Composites by Liquid Metal Dealloying", Fall MRS.  January 1, 2016
  • "Self-Organized Bicontinuous Intermetallic Coatings", Fall MRS.  January 1, 2016
  • "Kinetics of Morphological Evolution during Liquid Metal Dealloying", Fall 2015 MRS.  Boston, MA.  December 2, 2015
  • "Bulk Bicontinuous Ta/Cu Nanocomposites Made by Liquid Metal Dealloying: Structure and Mechanical Properties", Fall 2015 MRS.  Boston, MA.  December 1, 2015
  • "Controlling Electrocatalysis in Nanoporous Metals", Fall MRS.  Boston Massachusetts, United States of America (the).  November 30, 2015
  • "Controlling Electrocatalysis in Nanoporous Metals", Fall 2015 MRS.  Boston, MA.  November 30, 2015
  • "Are we there yet? Advanced Catalysts for Automotive Fuel Cells via Electrochemical Dealloying".  University of Connecticut.  November 20, 2015
  • "Less is More: New Innovations and Applications for Materials Made by Dealloying".  October 29, 2015
  • "Are we there yet? Advanced Catalysts for Automotive Fuel Cells via Electrochemical Dealloying".  March 23, 2015
  • "Are we there yet? Advanced Catalysts for Automotive Fuel Cells via Electrochemical Dealloying".  February 12, 2015
  • "Bulk Nanostructured Metals by Dealloying", Materials Today Asia.  December 9, 2014
  • "New Nanostructured Materials via Dealloying", Robert M. and Mary Haythornthwaite Foundation's Distinguished Lecture.  November 19, 2014
  • "Dealloying: Past, Present, and Future", 1st International Symposium on Nanoporosity Formation by Alloy Corrosion.  Germany.  September 1, 2014
  • "Nanoporosity Formation in Materials: New Systems and New Materials".  July 1, 2014
  • "On the Utility of Dealloyed Nanoporous Catalysts for PEM Fuel Cells", Gordon Research Conference on Fuel Cells.  July 1, 2014
  • "Characterization of Nanoporous Platinum-Ionic Liquid Composites for the Oxygen Reduction Reaction".  December 1, 2013
  • "Theory and Modeling of the Inverse Kirkendall Effect (or Lack Thereof) in Core-Shell Nanoparticle Electrocatalysts".  December 1, 2013
  • "Liquid Metal Dealloying of Binary Refractory Alloys".  December 1, 2013
  • "Control of the Interface Mobility During Dealloying: New Systems and New Materials".  December 1, 2013
  • "Dealloying and Annealing Optimization of High Mass Activity Pt3Ni7/NSTF ORR Cathodes for PEMFCs", ECS San Francisco.  October 1, 2013
  • "Electrochemistry at Nanoporous Metal/Ionic Liquid Composite Interfaces", International Society of Electrochemistry.  Queretaro, Mexico.  October 1, 2013
  • "Electrochemistry at Nanoporous Metal/Ionic Liquid Composite Interfaces".  Queretaro, Mexico.  October 1, 2013
  • "Dealloying and Porosity Evolution in Binary Alloy, Metallic Nanoparticles".  December 1, 2012
  • "Dealloying of Nanoparticles", ECS Honolulu.  October 1, 2012
  • "Growth and Design of Nanoporous Nanoparticle Catalysts", AACGE-W.  June 1, 2012
  • "Nanoporous Materials via Electrochemical Dealloying: Toward Applications in Energy Technologies", Lectures at the Leading Edge.  March 1, 2012
  • "The Active Surface Area of Nanoporous Metals during Oxygen Reduction", ECS Boston.  October 1, 2011
  • "Geometry and Nanoporous Metals", ECS Boston.  October 1, 2011
  • "Dealloyed Nanoporous Metals/Ionic Liquid Composites for High Performance Fuel Cell Electrocatalysis".  October 1, 2011
  • "Engineering Catalytic Nanoporous Metals for Reactions Important to the Hydrogen Economy", DOE/BES Catalysis Science Meeting.  October 1, 2011
  • "Dealloyed Nanoporous Metal/Ionic Liquid Catalysts for High Performance Oxygen Reduction in Fuel Cell Electrocatalysis".  September 1, 2011
  • "Evolution of Nanoporosity During Electrochemical Dealloying : Toward Applications in Energy Technologies".  June 1, 2011
  • "Nanoporous Metal/Ionic Liquid Catalysts for High Performance Oxygen Reduction in Fuel Cell Electrocatalysis", JHU APL Nanomaterials Symposium.  March 1, 2011
  • "Nanoporous Metal/Ionic Liquid Composite Electrocatalysts for the Oxygen Reduction Reaction".  December 1, 2010
  • "Heterogenous Nucleation of Lysozyme Crystals on Nanoporous Gold (NPG)".  December 1, 2010
  • "The importance of understanding nanoscale morphology and topology to make advanced catalysts for energy technologies", Non-equilibrium Interface and Surface Dynamics: Theory, Experiment and Simulation from Atomistic to Continuum Scales.  October 1, 2010
  • "Applications of Dealloyed Nanoporous Metals in Electrocatalysis", Gordon Research Conference on Electrodeposition.  August 1, 2010
  • "Engineering Catalytic Nanoporous Metals for Reactions Important to the Hydrogen Economy", DOE Contractor's Meeting.  June 1, 2010
  • "Simulations of Morphological and Topological Coarsening of Dealloyed Nanoporous Metals", ECS Vancouver.  April 1, 2010
  • "Assessment of the Electrocatalytic Properties of Nanoporous Metals formed by Dealloyed Binary and Ternary Alloys", ECS Vancouver.  April 1, 2010
  • "A Discussion of the Utility of Nanoporous Metals in Fuel Cell Catalysis".  January 1, 2010
  • "Activation Barrier for Terrace-limited Dissolution During Nanoporosity Evolution in Dealloying".  December 1, 2009
  • "Dealloyed Nanoporous Metals for PEM Fuel Cell Catalysis", Electrochemical Society.  Vienna.  October 1, 2009
  • "Kinetic Monte Carlo Simulation Studies of Coarsening in Mesoporous fcc Crystals: Topological and Morphological Evolution, Diffusion Pathways, and Void Formation".  College Park MD, United States.  October 1, 2009
  • "Catalysis by Nanoporous Metals by Electrochemical Dealloying".  April 1, 2009
  • "Fabrication and Properties of Nanoporous Metals by Electrochemical Dealloying", German Physical Society.  Dresden, Germany.  March 1, 2009
  • "Nanoporous Catalysts made by Electrochemical Dealloying: Bridging Fundamental Surface Physics and Applications in Energy Technologies", Arizona State University Physics Seminar.  Tempe AZ.  February 1, 2009
  • "On the Preparation of Nanoporous Metal Catalysts by Elechrochemical Dealloying".  Santa Barbara CA.  October 1, 2008
  • "The Preparation of Nanoporous Metal Catalysts by Electrochemical Dealloying".  September 1, 2008
  • "Recent Advances in the Preparation of Nanostructured Catalysts by Electrochemical Dealloying", NIST.  September 1, 2008
  • "The Preparation of Nanoporous Metal Catalysts by Electrochemical Dealloying".  September 1, 2008
  • "Effects of Substrate Shape, Curvature and Roughness on Thin Epitaxial Films of Pt on Au", AACGE-W.  June 1, 2008
  • "Materials Science and Engineering of Nanoporous Metals for Fuel Cell Electrocatalysis".  April 3, 2008
  • "Materials Science and Engineering of Nanoporous Metals for Fuel Cell Electrocatalysis", Solids Seminar.  Baltimore MD.  February 29, 2008
  • "Materials Science and Engineering of Nanoporous Metals for Fuel Cell Electrocatalysis".  February 6, 2008
  • "Structure and Properties of Nanoporous Metals Made by Dealloying Ternary Alloys", MRS.  Boston Massachusetts, United States of America (the).  November 28, 2007
  • "Influences of Minor Alloy Constituents in the Evolution of Nanoscale Porosity During Dealloying".  Amherst.  November 3, 2007
  • "Morphological Control and Applications of Nanoporous Metals", Metfoam 2007.  Montreal.  September 5, 2007
  • "Using Impurities to Tailor Mesoporous Metals: A KMC Study of Dealloying", Nonequilibrium Interface and Surface Dynamics.  April 24, 2007
  • "Gilded Fuel Cells : Interfacial Phenomena and Applications of Nanoporous Gold".  Madison.  February 1, 2007
  • "Gilded Fuel Cells : Interfacial Phenomena and Applications of Nanoporous Gold", Chemistry, Physics and Nanoscience Colloquium, Sandia National Labs.  Albuquerque.  January 24, 2007
  • "Atomic Scale Models of the Metal/Electrolyte Interface Incorporating Water", Future Perspectives of Corrosion Research.  Germany.  December 13, 2006
  • "Interfacial Phenomena in the Formation of Nanoporous Gold by Dealloying".  Boston MA.  November 28, 2006
  • "Gilded Fuel Cells: Interfacial Phenomena and Applications for Dealloying of Binary Alloys".  November 6, 2006
  • "Nanoporous Gold Leaf – A Traditional Metallurgist Goes High-Tech".  November 2, 2006
  • "The Dynamic Surface Morphology of Nanoporous Gold", CMSN-2006.  October 6, 2006
  • "Interfacial Phenomena in the Dealloying of Binary Alloys", Department of Chemical and Biomolecular Engineering Seminar.  Baltimore MD.  September 7, 2006
  • "Dealloying of Binary Alloys: The Atomic Scale Perspective", Gordon Research Conference.  July 1, 2006
  • "Interfacial Phenomena in the Formation of Nanoporosity by Dealloying", Workshop on Characterization of Nanostructured Materials.  March 1, 2006
  • "Interfacial Phenomena in the Formation of Ultra-High Surface Area Metals by Dealloying".  March 1, 2006
  • "Morphological Control and Applications of Nanoporous Metals".  Houston TX.  November 1, 2005
  • "Morphological Control and Applications of Nanoporous Metals".  October 1, 2005
  • "Probing the alloy/electrolyte interface of nanoporous metals", Materials Science & Technology.  September 1, 2005
  • "Nanoporous Gold: A Great New Functional Substrate for Biosensing, Etc.?", International Workshop on Functional Solid-Supported Bimolecular Lipid Membranes.  Schloss Ringberg, Germany.  September 1, 2005
  • "Nanoporous Gold: A Great New Functional Substrate for Biosensing, Catalysis, Etc.?".  Mainz, Germany.  September 1, 2005
  • "Thin Films on Thin Films: Epitaxial growth on mesoporous metal membranes", Thin Film and Crystal Growth Mechanisms.  July 1, 2005
  • "Atomic Scale Modeling of Dealloying Using the Kinetic Monte Carlo Method", ONR Corrosion Workshop.  Arlie Virginia, United States of America (the).  May 1, 2005
  • "Nanoporous Gold Leaf: A traditional metallurgist goes high-tech".  April 28, 2005
  • "Nanoscale Rippled Surfaces Spontaneously Formed Using Ion Beams", Physical Mathematics Seminar.  April 26, 2005
  • "Doubly Bicontinuous Mesoporous Metals", MRS.  March 28, 2005
  • "Nonlinear Stabilization Mechanisms in Amplitude Saturation During Sputter Ripple Formation on Silicon", MRS.  December 1, 2004
  • "Models for Porosity Evolution During Dealloying", MRS.  November 30, 2004
  • "Modern-Day Gilding: Mesoporous Gold Nanocomposite Membranes for Electrocatalysis, etc.", NRL.  November 23, 2004
  • "Myriad Surface Morphologies of Ion-Sputtered Silicon", ASME.  November 18, 2004
  • "Morphological Control and Applications of Nanporous Gold", TMS.  Charlotte North Carolina, United States of America (the).  March 17, 2004
  • "Nanoporous Metals," mini-conference entitled "Fast-Track Non-cryogenic Ignition on NIF: Double Shells", LLNL.  February 2, 2004
  • "Mesoporous Metals and Mesoporous Metal Nanocomposites".  December 12, 2003
  • "Morphological Control and Applications of Nanoporous Metals and Nanoporous Metal Nanocomposites".  October 30, 2003
  • "Morphological Control and Applications of Nanoporous Metals and Nanoporous Metal Nanocomposites".  September 23, 2003
  • "Properties and Applications of Metal Leaf Films and Membranes".  Arizona, United States of America (the).  June 1, 2003
  • "Nanoporous Metal Membranes: Formation Mechanisms and Application as Electrocatalyst Supports in PEM Fuel Cells".  New York City.  March 28, 2003
  • "New Horizons in Kinetic Monte Carlo Appreciation".  Laramie Wyoming, United States of America (the).  January 1, 2003
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