Faculty

Kevin Hemker

Alonzo G. Decker Chair in Mechanical Engineering

Research Interests

Atomic-scale processes that govern the mechanical behavior of advanced material systems. Making key observations and discoveries that define the way the mechanics and materials community thinks about and understands the properties of: nanocrystalline materials, MEMS and micro-lattice materials, thermal barrier coatings, armor ceramics, and high temperature structural materials.

Education
  • Ph.D. 1990, Stanford University
  • M.S. 1987, Stanford University
  • B.S. 1985, University of Cincinnati
Research Areas
  • Relatively new research topics include the characterization and modeling of bond coat layers for thermal barrier coatings, deformation behavior of nanocrystalline materials, and characterization of materials for MEMS applications.
  • Research aimed at identifying the microstructural details that govern the macroscopic mechanical response of metals, alloys and advanced structural materials.
  • Traditional interests include: high temperature mechanical behavior, transmission electron microscopy, deformation behavior of intermetallic alloys, experimental characterization of dislocation core structure, and microsample testing.
Awards
  • 2016:  Member
  • 2016:  Vice-President
  • 2016:  Fellow - American Association for the Advancement of Science (AAAS)
  • 2014:  Fellow - The Minerals, Metals, Materials Society (TMS)
  • 2010:  Member - Defense Sciences Research Council (DSRC)
  • 2010:  Member - Energy Materials Blue Ribbon Panel - convened by TMS - ASM and Energetics Inc. for DOE-EERE Office of Industrial Technologies
  • 2009:  Co-chair - 2009 Gordon Research Conference on Physical Metallurgy (elected)
  • 2009:  Fellow - American Society of Materials (ASM International)
  • 2009:  Fellow - American Society of Mechanical Engineers (ASME)
  • 2009:  Member - Alpha Sigma Mu
  • 2009:  Member - Tau Beta Pi
  • 2007:  McMaster Manufacturing Research Institute - Ontario Centres of Excellence Distinguished Lecturer - McMaster University
  • 2001:  Materials Science Research Silver Medal - American Society of Materials (ASM)
  • 1994:  NSF National Young Investigator - Division of Materials Research - Metals Research Program
  • 1994:  NSF Research Initiation Award - Directorate for Engineering - Mechanics and Materials Program
  • 1990:  Society of Advanced Manufacturing and Process Engineers Graduate Scholar
  • 1985:  Herman Schneider Medal (Top graduate: University of Cincinnati-College of Engineering)
  • 1983:  American Society of Metals National Scholar
Journal Articles
  • Levinson, A. J., Rowenhurst, D. J., Sharp, K. W., Ryan, S. M., Hemker, K., Fonda, R. W. (2017).  Automated methods for the quantification of 3D woven architectures.  Materials Characterization.  124.  241-249.
  • Zhao, L., Ryan, S. M., Lin, S., Xue, J., Ha, S., Igusa, T., Sharp, K. W., Guest, J. K., Hemker, K., Weihs, T. P. (2017).  Combining a distributed flow manifold and 3D woven metallic lattices to enhance fluidic and thermal properties for heat transfer applications.  International Journal of Heat and Mass Transfer.
  • Farbaniec, L., Hogan, J. D., Xie, K. Y., Schaeffer, M., Hemker, K., Ramesh, K. T. (2017).  Damage evolution of hot-pressed boron carbide under confined dynamic compression.  International Journal of Impact Engineering.  99.  75-84.
  • Toksoy, M. F., Hemker, K. (2017).  Densification and characterization of rapid carbothermal synthesized boron carbide.  International Journal of Applied Ceramic Technology.
  • Levinson, A. J., Rowenhorst, D. J., Sharp, K. W., Ryan, S. M., Hemker, K., Fonda, R. W. (2017).  Automated methods for the quantification of 3D woven architectures.  Materials Characterization.
  • Zhao, L., Ryan, S. M., Lin, S., Xue, J., Ha, S., Igusa, T., Sharp, K. W., Guest, J. K., Hemker, K., Weihs, T. P. (2016).  Combining a distributed flow manifold and 3D woven metallic lattices to enhance fluidic and thermal properties for heat transfer applications.  International Journal of Heat and Mass Transfer.
  • Eastman, D. W., Alam, Z., Weber, G., Shade, P. A., Uchic, M. D., Pollock, T. M., Lenthe, W. C., Hemker, K. (2016).  Benchmarking crystal plasicity models with microtensile evolution and 3D characterization of Rene 88DT.  Superalloys 2016.
  • Xie, K. Y., An, Q., Sato, T., Breen, A. J., Ringer, S. P., Goddard, W. A., Cairney, J. M., Hemker, K. (2016).  Breaking the icosahedra in boron carbide.  Proceedings of the National Academy of Sciences.  113.  12012-12016.
  • Xie, K. Y., Alam, Z., Caffee, A., Hemker, K. (2016).  Deformation behavior of Mg single crystals compressed along c-axis.  Magnesium Technology.
  • Alam, Z., Eastman, D., Jo, M., Hemker, K. (2016).  Development of high-temperature tensile tester for micromechanical characterization of materials supporting meso-scale ICME models.  JOM.  68.  2754-2760.
  • Florando, J. N., El-Dasher, B. S., Chen, C., Swift, D. S., Barton, N. R., McNaney, J. M., Ramesh, K. T., Hemker, K., Kumar, M. (2016).  Effect of strain rate and dislocation density on the twinning behavior in tantalum.  AIP Advances.  6.  45120.
  • Zhao, L., Ryan, S. M., Ortega, J. K., Ha, S., Sharp, K. W., Guest, J. K., Hemker, K. (2016).  Experimental investigation of 3D woven Cu lattices for heat exchanger applications.  International Journal of Heat and Mass Transfer.  96.  296-311.
  • Alam, Z., Eastman, D., Weber, G., Ghosh, S., Hemker, K. (2016).  Microstructural aspects of fatigue crack initiation and short crack growth in Rene 88DT.  Superalloys 2016.
  • Xie, K. Y., Kuwelkar, K., Haber, R. A., LaSalvia, J. C., Hemker, K. (2016).  Microstructural characterization of a commercial hot-pressed boron carbide armor plate.  Journal of the American Ceramic Society.  99.  2834-2841.
  • An, Q., Reddy, K. M., Xie, K. Y., Hemker, K., Goddard, W. A. (2016).  New ground-state crystal structure of elemental boron.  Physical Review Letters.  117(206).  085501.
  • An, Q., Reddy, K. M., Qian, J., Hemker, K., Chen, M., Goddard, W. A. (2016).  Nucleation of amorphous shear bands at nanotwins in boron suboxide.  Nature Communications.  7.  11001.
  • Reddy, K. M., Hwang, C., Ornek, M., Miller, S. L., Mayo, W. E., Burgess, A., Haber, R., Hemker, K. (2016).  Observations of nanocrystalline cubic boron nitride formed with plasma spraying.  Acta Materialia.  116.  155-165.
  • Xie, K. Y., Alam, Z., Caffee, A., Hemker, K. (2016).  Pyramidal I slip in c-axis compressed Mg single crystals.  Scripta Materialia.  112.  75-78.
  • 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.  46-50.
  • An, Q., Goddard, W. A., Xie, K. Y., Sim, G., Hemker, K., Munhollon, T., Toksoy, M. F., Haber, R. A. (2016).  Superstrength through nanotwinng.  Nano Letters.  16.  7573-7579.
  • Huang, W., Besar, K., Zhang, Y., Yang, S., Wiedman, G., Liu, Y., Guo, W., Song, J., Hemker, K., Hristova, K., others. (2015).  A High-Capacitance Salt-Free Dielectric for Self-Healable, Printable, and Flexible Organic Field Effect Transistors and Chemical Sensor.  Advanced Functional Materials.  25(24).  3745–3755.
  • Xie, K. Y., An, Q., Toksoy, M. F., McCauley, J. W., Haber, R. A., Goddard, III, W. A., Hemker, K. (2015).  Atomic-Level Understanding of “Asymmetric Twins” in Boron Carbide.  Physical review letters.  115(17).  175501.
  • Ryan, S. M., Szyniszewski, S., Ha, S., Xiao, R., Nguyen, T., Sharp, K. W., Weihs, T., Guest, J., Hemker, K. (2015).  Damping behavior of 3D woven metallic lattice materials.  Scripta Materialia.  106.  1–4.
  • Szyniszewski, S., Ryan, S., Ha, S., Zhang, Y., Weihs, T., Hemker, K., Guest, J. (2015).  Damping modeling in woven micro lattice materials.
  • Flores-Johnson, E., Rupert, T. J., Hemker, K., Gianola, D. S., Gan, Y. (2015).  Extreme Mechanics Letters.
  • Zhang, Y., Ha, S., Sharp, K., Guest, J., Weihs, T., Hemker, K. (2015).  Fabrication and mechanical characterization of 3D woven Cu lattice materials.  Materials & Design.  85.  743–751.
  • Rottmann, P., Hemker, K. (2015).  In Situ Analysis of the Fracture Behavior of Nanocrystalline Copper Using Precession-Assisted Crystal Orientation Mapping.  Microscopy and Microanalysis.  21(S3).  273–274.
  • Dixit, N., Xie, K. Y., Hemker, K., Ramesh, K. (2015).  Microstructural evolution of pure magnesium under high strain rate loading.  Acta Materialia.  87.  56–67.
  • Flores-Johnson, E., Rupert, T. J., Hemker, K., Gianola, D. S., Gan, Y. (2015).  Modelling wrinkling interactions produced by patterned defects in metal thin films.  Extreme Mechanics Letters.  4.  175–185.
  • Xie, K. Y., Livi, K. J., McCauley, J. W., Hemker, K. (2015).  Precipitation of AlN in a commercial hot-pressed boron carbide.  Scripta Materialia.  101.  95–98.
  • Pandey, A., Hemker, K. (2015).  Temperature Dependence of the Anisotropy and Creep in a Single-Crystal Nickel Superalloy.  JOM.  67(7).  1617–1623.
  • Dixit, N., Xie, K. Y., Hemker, K., Ramesh, K. T. (2015).  Microstructural evolution of pure magnesium under high strain rate loading.  Acta Materialia.  87.  56-67.
  • Trimby, P., Cairney, J., Cao, Y., Chen, Z., Hemker, K.,  Liao, X., Rottmann, P., Samudrala, S., Sun, J., Wang, J., Wheeler, J. (2014).  Characterizing deformed ultrafine grained and nanocrystalline materials using transmission Kikuchi diffraction in the scanning electron microscope.  Acta Materialia.  62.  69-80.
  • Trimby, P. W., Cao, Y., Chen, Z., Han, S., Hemker, K., Lian, J., Liao, X., Rottmann, P., Samudrala, S., Sun, J., others. (2014).  Characterizing deformed ultrafine-grained and nanocrystalline materials using transmission Kikuchi diffraction in a scanning electron microscope.  Acta Materialia.  62.  69–80.
  • Sharon, J. A., Zhang, Y., Mompiou, F., Legros, M., Hemker, K. (2014).  Discerning size effect strengthening in ultrafine-grained Mg thin films.  Scripta Materialia.  75.  10–13.
  • Sharon, J. A., Zhang, Y., Mompiou, F., Legros, M., Hemker, K. (2014).  Discerning size effect strengthening in ultrafine-grained Mg thin films.  Scripta Materialia.  75.  10-13.
  • Ayyagari, R. S., Farbaniec, L., Hazeli, K., Xie, K., Hemker, K., KT, R. (2014).  Dynamic response of ECAE-AZ31 magnesium under pressure shear.
  • Xie, K. Y., Toksay, M. F., Kuwelkar, K., Zhang, B., Krogstad, J. A., Haber, R. R., Hemker, K. (2014).  Effect of Alumina on the Structure and Mechancial Properties of Spark Plasma Sintered Boron Carbide.  Journal of the American Ceramic Society.  97(11).  3710-3718.
  • Xie, K. Y., Toksoy, M. F., Kuwelkar, K., Zhang, B., Krogstad, J. A., Haber, R. A., Hemker, K. (2014).  Effect of alumina on the structure and mechanical properties of spark plasma sintered boron carbide.  Journal of the American Ceramic Society.  97(11).  3710–3718.
  • Hemker, K. (2014).  Elastic properties and interfacial toughness of thermal barrier coatings.
  • Krogstad, J. A., Keimel, C., Hemker, K. (2014).  Emerging materials for microelectromechanical systems at elevated temperatures.  Journal of Materials Research.  15.  1597-1608.
  • Krogstad, J. A., Keimel, C., Hemker, K. (2014).  Emerging materials for microelectromechanical systems at elevated temperatures.  Journal of Materials Research.  29(15).  1597–1608.
  • Young, A. T., Farias, S. L., Hemker, K., Cammarata, R. (2014).  Enhanced Yield and Fracture Strength of Multilayered Metal-Ceramic Nanocomposites.  Mater. Res. Soc. Symp. Proc..
  • Chen, C., Florando, J., Kumar, M., Ramesh, K., Hemker, K. (2014).  Incipient deformation twinning in dynamically sheared bcc tantalum.  Acta Materialia.  69.  114–125.
  • Young, A. T., Farias, S. L., Hemker, K., Cammarata, R. (2014).  Manufacturing and Fracture Behavior of Large Scale Multilayered Metal-Ceramic Nanocomposites.  MRS Proceedings.  1650.  mrsf13–1650.
  • Hemker, K., Rottmann, P., Dasgupta, S. (2014).  Observations of stress-coupled grain boundary migration in nanocrystalline thin films.
  • Zhao, L., Ha, S., Sharp, K. W., Geltmacher, A. B., Fonda, R. W., Kinsey, A. H., Zhang, Y., Ryan, S. M., Erdeniz, D., Dunand, D. C., Hemker, K., Guest, J., Weihs, T. (2014).  Permeability measurements and modeling of topology-optimized metallic 3-D woven lattices.  Acta Materialia.  81.  326-336.
  • Zhao, L., Ha, S., Sharp, K. W., Geltmacher, A. B., Fonda, R. W., Kinsey, A. H., Zhang, Y., Ryan, S. M., Erdeniz, D., Dunand, D. C., others. (2014).  Permeability measurements and modeling of topology-optimized metallic 3-D woven lattices.  Acta Materialia.  81.  326–336.
  • Burns, D. E., Zhang, Y., Weihs, T., Hemker, K. (2014).  Properties of sputter deposited Ni-base superalloys for microelectromechanical systems.  Thin Solid Films.  558.  20–23.
  • Burns, D. E., Zhang, Y., Weihs, T., Hemker, K. (2014).  Properties of sputter deposited Ni-base superalloys for microelectromechanical systems.  Thin Solid Films.  558.  20-23.
  • Szyniszewski, S., Ryan, S., Ha, S., Zhang, Y., Weihs, T., Hemker, K., Guest, J. (2014).  Simulation of frictional damping in metallic woven materials.  Proceedings of the 9th International Conference on Structural Dynamics.  1-4.
  • McCue, I., Ryan, S., Hemker, K., Xu, X., Li, N., Chen, M. W., Erlebacher, J. (2014).  Size Effects in Bulk, Hierarchical Bicontinuous Nanocomposite Metals.  Science.
  • Pandey, A., Shyam, A., Watkins, T. R., Lara-Curzio, E., Stafford, R. J., Hemker, K. (2014).  The Uniaxial Tensile Response of Porous and Microcracked Ceramic Materials.  Journal of the American Ceramic Society.  97(3).  899–906.
  • Pandy, A., Shyam, A., Watkins, T. R., Lara-Curzio, E., Stafford, R. J., Hemker, K. (2014).  The Uniaxial Tensile Response of Porous and Microcracked Ceramic Materials.  Journal of the American Ceramic Society.  97.  899-906.
  • He, M. R., Felfer, P., Dasgupta, S., Samudrala, S., Malone, P. J., Feng, G., Hemker, K. (2014).  Understanding the mechanical behavior of nanocrystalline Al-O thin films with complex microstructures.  Acta Materialia.  77.  269-283.
  • He, M., Felfer, P. J., Dasgupta, S., Samudrala, S. K., Malone, P. J., Feng, G., Hemker, K., Cairney, J. M., Gianola, D. S. (2014).  Understanding the mechanical behavior of nanocrystalline Al–O thin films with complex microstructures.  Acta Materialia.  77.  269–283.
  • Chen, C. Q., Florando, J. N., Kumar, M., Ramesh, K., Hemker, K. (2014).  Incipient deformation twinning in dynamically sheared bcc tantalum.  ACTA MATERIALIA.  69.  114-125.
  • Chen, C., Hu, G., Florando, J., Kumar, M., Hemker, K., Ramesh, K. (2013).  Interplay of dislocation slip and deformation twinning in tantalum at high strain rates.  Scripta Materialia.  69(10).  709–712.
  • Chen, C., Florando, J., Kumar, M., Ramesh, K., Hemker, K. (2013).  Mechanism of Deformation Twinning in Tantalum Driven by Extremely Dynamic Shear-Compression at Low Temperature.  Microscopy and Microanalysis.  19(S2).  1766–1767.
  • Jones, J. S., Sharon, J. A., Mohammed, J. S., Hemker, K. (2013).  Small-scale mechanical characterization of space-exposed fluorinated ethylene propylene recovered from the Hubble Space Telescope.  Polymer Testing.  32(3).  602–607.
  • Zhang, Y., Sharon, J., Hu, G., Ramesh, K., Hemker, K. (2013).  Stress-driven grain growth in ultrafine grained Mg thin film.  Scripta Materialia.  68(6).  424–427.
  • Gianola, D., Lee, Z., Ophus, C., Luber, E., Mitlin, D., Dahmen, U., Hemker, K., Radmilovic, V. (2013).  Tensile behavior of Al 1- xMox crystalline and amorphous thin films.  Acta Materialia.  61(5).  1432–1443.
  • Pandey, A., Tolpygo, V. K., Hemker, K. (2013).  Thermomechanical Behavior of Developmental Thermal Barrier Coating Bond Coats.  JOM.  65(4).  542–549.
  • Kim, C., Sharpe, Jr, W. N., Hemker, K. (2012).  An Optical Method for Strain-Controlled Fatigue Testing of Microspecimens.  Microelectromechanical Systems, Journal of.  21(4).  774–775.
  • Pandey, A., Tolpygo, V., Hemker, K. (2012).  Characterization of High Temperature Mechanical Properties of Two Unique Experimental Coatings.  AIP Conference Proceedings.
  • Burns, D. E., Zhang, Y., Teutsch, M., Bade, K., Aktaa, J., Hemker, K. (2012).  Development of Ni-based superalloys for microelectromechanical systems.  Scripta Materialia.  67(5).  459–462.
  • Burns, D., Zhang, Y., Weihs, T., Hemker, K. (2012).  Fabrication Routes and the Effect of Microstructure on the Mechanical Behavior of Ni-Base Superalloy Thin Films and MEMS Structures.  AIP Conference Proceedings.
  • Mompiou, F., Legros, M., Radetic, T., Dahmen, U., Gianola, D., Hemker, K. (2012).  In situ TEM observation of grain annihilation in tricrystalline aluminum films.  Acta Materialia.  60(5).  2209–2218.
  • Pollock, T., Lipkin, D., Hemker, K. (2012).  Multifunctional coating interlayers for thermal-barrier systems.  MRS bulletin.  37(10).  923–931.
  • Chen, C., Ramesh, K., Hemker, K., Kumar, M., Florando, J. (2012).  Nucleation Versus Propagation of Deformation Twins in Tantalum Driven by High Shear Strain Rate at Low Temperature.  AIP Conference Proceedings.
  • Tang, F., Gianola, D., Moody, M., Hemker, K., Cairney, J. (2012).  Observations of grain boundary impurities in nanocrystalline Al and their influence on microstructural stability and mechanical behaviour.  Acta Materialia.  60(3).  1038–1047.
  • Sharon, J., Mompiou, F., Legros, M., Hemker, K. (2012).  Observations of Stress-Coupled Grain Boundary Migration.  AIP Conference Proceedings.
  • Burns, D. E., Zhang, Y., Weihs, T., Hemker, K. (2012).  Sputtered Ni-base Superalloys for Microscale Devices.  Superalloys 2012.  569-575.
  • Burns, D. E., Zhang, Y., Weihs, T., Hemker, K. (2012).  Sputtered Ni-Base Superalloys for Microscale Devices.  Superalloys 2012.  569–575.
  • Zhang, Y., Sharon, J., Hemker, K. (2012).  Stress-Driven Grain Boundary Migration in Ultrafine-Grained Mg Film.  AIP Conference Proceedings.
  • Eberl, C., Gianola, D., Wang, X., He, M., Evans, A., Hemker, K. (2011).  A method for in situ measurement of the elastic behavior of a columnar thermal barrier coating.  Acta Materialia.  59(9).  3612–3620.
  • Chen, C., Ramesh, K., Hemker, K., Kumar, M., Florando, J. (2011).  Deformation Twinning in Tantalum.  Minerals, Metals and Materials Society/AIME, 420 Commonwealth Dr., P. O. Box 430 Warrendale PA 15086 United States.[np]. Feb.
  • Teutsch, M., Burns, D., Bade, K., Hemker, K., Aktaa, J. (2011).  Entwicklung von galvanisch abgeschiedenem LIGA-Ni-Al für Hochtemperaturanwendungen.  MikroSystemTechnik.
  • Funk, M., Ma, K., Eberl, C., Schoenung, J., Göken, M., Hemker, K. (2011).  High-Temperature Mechanical Behavior of End-of-Life Cryomilled NiCrAlY Bond Coat Materials.  Metallurgical and Materials Transactions A.  42(8).  2233–2241.
  • Eberl, C., Wang, X., Gianola, D. S., Nguyen, T., He, M. Y., Evans, A. G., Hemker, K. (2011).  In situ measurement of the toughness of the interface between a thermal barrier coating and a Ni alloy.  Journal of the American Ceramic Society.  94(s1).
  • Eberl, C., Wang, X., Gianola, D. S., Nguyen, T., He, M. Y., Evans, A. G., Hemker, K. (2011).  In Situ Measurement of the Toughness of the Interface Between a Thermal Barrier Coating and a Ni Alloy.  Journal of the American Ceramic Society.  94(s1).  s120–s127.
  • Sharon, J., Su, P., Prinz, F., Hemker, K. (2011).  Stress-driven grain growth in nanocrystalline Pt thin films.  Scripta Materialia.  64(1).  25–28.
  • Thompson, R., Zhao, J., Hemker, K. (2010).  Effect of ternary elements on a martensitic transformation in $β$-NiAl.  Intermetallics.  18(5).  796–802.
  • Eberl, C., Gianola, D., Hemker, K. (2010).  Mechanical characterization of coatings using microbeam bending and digital image correlation techniques.  Experimental Mechanics.  50(1).  85–97.
  • Suresha, S., Haj-Taieb, M., Bade, K., Aktaa, J., Hemker, K. (2010).  The influence of tungsten on the thermal stability and mechanical behavior of electrodeposited nickel MEMS structures.  Scripta Materialia.  63(12).  1141–1144.
  • Rupert, T., Gianola, D., Gan, Y., Hemker, K. (2009).  Experimental observations of stress-driven grain boundary migration.  Science.  326(5960).  1686–1690.
  • Joshi, S., Eberl, C., Cao, B., Ramesh, K., Hemker, K. (2009).  On the occurrence of Portevin–Le Chatelier instabilities in ultrafine-grained 5083 aluminum alloys.  Experimental mechanics.  49(2).  207–218.
  • Balk, T. J., Eberl, C., Sun, Y., Hemker, K., Gianola, D. S. (2009).  Tensile and compressive microspecimen testing of bulk nanoporous gold.  JOM.  61(12).  26–31.
  • Hemker, K. (2009).  TMS: Advocating for the importance of science and technology.  JOM Journal of the Minerals, Metals and Materials Society.  61(7).  16–16.
  • Mendis, B., Hemker, K. (2008).  Bloch wave analysis of the Eshelby twist contrast around end-on screw dislocations in bcc Mo.  Ultramicroscopy.  108(9).  855–864.
  • Hemker, K., Mendis, B., Eberl, C. (2008).  Characterizing the microstructure and mechanical behavior of a two-phase NiCoCrAlY bond coat for thermal barrier systems.  Materials Science and Engineering: A.  483.  727–730.
  • Lewis, A. C., van Heerden, D., Eberl, C., Hemker, K., Weihs, T. (2008).  Creep deformation mechanisms in fine-grained niobium.  Acta Materialia.  56(13).  3044-3052.
  • Lewis, A., Van Heerden, D., Eberl, C., Hemker, K., Weihs, T. (2008).  Creep deformation mechanisms in fine-grained niobium.  Acta Materialia.  56(13).  3044–3052.
  • Lewis, A., Eberl, C., Hemker, K., Weihs, T. (2008).  Grain boundary strengthening in copper/niobium multilayered foils and fine-grained niobium.  Journal of Materials Research.  23(02).  376–382.
  • Lewis, A. C., Eberl, C., Hemker, K., Weihs, T. (2008).  Grain boundary strengthening in copper/niobium multilayered foils and fine-grained niobium.  Journal of Materials Research.  23(2).  376-382.
  • Gianola, D., Mendis, B., Cheng, X., Hemker, K. (2008).  Grain-size stabilization by impurities and effect on stress-coupled grain growth in nanocrystalline Al thin films.  Materials Science and Engineering: A.  483.  637–640.
  • Legros, M., Gianola, D. S., Hemker, K. (2008).  In situ TEM observations of fast grain-boundary motion in stressed nanocrystalline aluminum films.  Acta Materialia.  56(14).  3380–3393.
  • Hemker, K., Nix, W. D. (2008).  Nanoscale deformation: seeing is believing.  Nature materials.  7(2).  97–98.
  • Gianola, D. S., Eberl, C., Cheng, X., Hemker, K. (2008).  Stress-Driven Surface Topography Evolution in Nanocrystalline Al Thin Films.  Advanced materials.  20(2).  303–308.
  • Haj-Taieb, M., Haseeb, A., Caulfield, J., Bade, K., Aktaa, J., Hemker, K. (2008).  Thermal stability of electrodeposited LIGA Ni–W alloys for high temperature MEMS applications.  Microsystem Technologies.  14(9-11).  1531–1536.
  • Mendis, B., Hemker, K. (2008).  Thermal stability of microstructural phases in commercial NiCoCrAlY bond coats.  Scripta Materialia.  58(4).  255–258.
  • Jain, P., Raj, S. V., Hemker, K. (2007).  Characterization of NiCrAlY coatings for a high strength, high conductivity GRCop-84 copper alloy.  Acta Materialia.  55(15).  5103–5113.
  • Mendis, B., Hemker, K. (2007).  Evolution of the premartensitic state in the NiAl phase of a NiCoCrAlY bond coat during thermal cycling.  Philosophical Magazine.  87(27).  4229–4251.
  • Power, C., Antony, L., McKechnie, T., O Dell, J., Hemker, K., Mendis, B. (2007).  Fabrication of Nano Materials.  ADVANCES IN POWDER METALLURGY AND PARTICULATE MATERIALS.  2.  09.
  • Hemker, K., Sharpe, Jr, W. (2007).  Microscale characterization of mechanical properties.  Annu. Rev. Mater. Res..  37.  93–126.
  • Balk, T. J., Hemker, K., Kubin, L. P. (2007).  On anomalous strain hardening in iridium crystals.  Scripta materialia.  56(5).  389–392.
  • Thompson, R., Hemker, K. (2007).  Thermal expansion measurements on coating materials by digital image correlation.  Proceedings of the 2007 SEM Annual Conference and Exposition on Experimental and Applied Mechanics, Springfield, Massachusetts.
  • Chen, M., Ma, E., Hemker, K. (2006).  17 Mechanical Behavior of Nanocrystalline Metals.
  • Eberl, C., Thompson, R., Gianola, D., Sharpe, Jr, W., Hemker, K. (2006).  Digital image correlation and tracking.  MatLabCentral, Mathworks file exchange server, FileID.  12413.
  • Gianola, D., Warner, D., Molinari, J., Hemker, K. (2006).  Increased strain rate sensitivity due to stress-coupled grain growth in nanocrystalline Al.  Scripta Materialia.  55(7).  649–652.
  • Mendis, B., Tryon, B., Pollock, T., Hemker, K. (2006).  Microstructural observations of as-prepared and thermal cycled NiCoCrAlY bond coats.  Surface and Coatings Technology.  201(7).  3918–3925.
  • Mendis, B., Livi, K., Hemker, K. (2006).  Observations of reactive element gettering of sulfur in thermally grown oxide pegs.  Scripta materialia.  55(7).  589–592.
  • Gianola, D., Van Petegem, S., Legros, M., Brandstetter, S., Van Swygenhoven, H., Hemker, K. (2006).  Stress-assisted discontinuous grain growth and its effect on the deformation behavior of nanocrystalline aluminum thin films.  Acta Materialia.  54(8).  2253–2263.
  • Antony, L. V., O’Dell, J. S., McKechnie, T. N., Power, C., Hemker, K., Mendis, B. (2006).  US pioneers ‘high speed’tiny tungsten.  Metal Powder Report.  61(11).  16–19.
  • Mendis, B., Mishin, Y., Hartley, C., Hemker, K. (2006).  Use of the Nye tensor in analyzing HREM images of bcc screw dislocations.  Philosophical Magazine.  86(29-31).  4607–4640.
  • Aktaa, J., Reszat, J. T., Walter, M., Bade, K., Hemker, K. (2005).  High cycle fatigue and fracture behavior of LIGA Nickel.  Scripta materialia.  52(12).  1217–1221.
  • Chen, M., McCauley, J., LaSalvia, J., Hemker, K. (2005).  Microstructural Characterization of Commercial Hot-Pressed Boron Carbide Ceramics.  Journal of the American Ceramic Society.  88(7).  1935–1942.
  • Lee, J. K., Hemker, K. (2005).  Philosophical magazine first published in 1798.  Philosophical Magazine.  85(2-3).  115–116.
  • Chichili, D. R., Ramesh, K., Hemker, K. (2004).  Adiabatic shear localization in $α$-titanium: experiments, modeling and microstructural evolution.  Journal of the Mechanics and Physics of Solids.  52(8).  1889–1909.
  • Thompson, R., Hemker, K., Uchic, M. (2004).  Experimental techniques for scale-specific tension testing of aerospace alloys.  TMS Lett.  1.  143–44.
  • Mendis, B., Mishin, Y., Hartley, C., Hemker, K. (2004).  HREM imaging of screw dislocation core structures in bcc metals.  MRS Proceedings.  839.  P3–13.
  • Jain, P., Hemker, K., Raj, S. V. (2004).  Microsample Characterization of Coatings for GRCop-84 for High Temperature High Heat Flux Application.
  • Glynn, M., Chen, M., Ramesh, K., Hemker, K. (2004).  Terence E. Mitchell Symposium on the Magic of Materials: Structures and Properties-The Influence of a Martensitic Phase Transformation on Stress Development in Thermal Barrier Coating Systems.  Metallurgical and Materials Transactions-Series A.  35(8).  2279–2286.
  • Glynn, M., Chen, M., Ramesh, K., Hemker, K. (2004).  The influence of a martensitic phase transformation on stress development in thermal barrier coating systems.  Metallurgical and Materials Transactions A.  35(8).  2279–2286.
  • Tryon, B., Pollock, T., Gigliotti, M., Hemker, K. (2004).  Thermal expansion behavior of ruthenium aluminides.  Scripta Materialia.  50(6).  845–848.
  • Hemker, K. (2004).  Understanding how nanocrystalline metals deform.  Science.  304(5668).  221.
  • Chen, M. W., Glynn, M. L., Ott, R. T., Hufnagel, T., Hemker, K. (2003).  Characterization and modeling of a martensitic transformation in a platinum modified diffusion aluminide bond coat for thermal barrier coatings.  Acta Materialia.  51(14).  4279-4294.
  • Chen, M., Glynn, M., Ott, R., Hufnagel, T., Hemker, K. (2003).  Characterization and modeling of a martensitic transformation in a platinum modified diffusion aluminide bond coat for thermal barrier coatings.  Acta Materialia.  51(14).  4279–4294.
  • Chen, M., Ma, E., Hemker, K., Sheng, H., Wang, Y., Cheng, X. (2003).  Deformation twinning in nanocrystalline aluminum.  Science.  300(5623).  1275–1277.
  • Chen, M. W., Ma, E., Hemker, K., Sheng, H. W., Wang, Y. M., Cheng, X. M. (2003).  Deformation twinning in nanocrystalline aluminum.  Science.  300(5623).  1275-1277.
  • Pan, D., Chen, M., Wright, P., Hemker, K. (2003).  Evolution of a diffusion aluminide bond coat for thermal barrier coatings during thermal cycling.  Acta Materialia.  51(8).  2205–2217.
  • Chen, M., Glynn, M., Pan, D., Ramesh, K., Hemker, K., Ott, R., Hufnagel, T. (2003).  IMECE2003-43203 Influence of Martensitic Transformation on the Durability of TBC Systems.  ASME-PUBLICATIONS-AD.  68.  489–496.
  • Chen, M., Ma, E., Hemker, K., Sheng, H., Wang, Y., Cheng, X. (2003).  MATERIALS SCIENCE: Deformation Twinning in Nanocrystalline Aluminum.  SCIENCE-NEW YORK THEN WASHINGTON-.  1275–1276.
  • Cho, H., Hemker, K., Lian, K., Goettert, J., Dirras, G. (2003).  Measured mechanical properties of LIGA Ni structures.  Sensors and Actuators A: Physical.  103(1).  59–63.
  • Hemker, K. (2003).  Microsample Characterization of Coatings for GRCop-84 for High Heat Flux Applications.
  • Wang, Y., Wang, K., Pan, D., Lu, K., Hemker, K., Ma, E. (2003).  Microsample tensile testing of nanocrystalline copper.  Scripta materialia.  48(12).  1581–1586.
  • Wang, Y. M., Wang, K., Pan, D., Lu, K., Hemker, K., Ma, E. (2003).  Microsample tensile testing of nanocrystalline copper.  Scripta Materialia.  48(12).  1581-1586.
  • Chen, M. W., Ott, R., Hufnagel, T., Wright, P. K., Hemker, K. (2003).  Microstructural evolution of platinum modified nickel aluminide bond coat during thermal cycling.  Surface & Coatings Technology.  163.  25-30.
  • Chen, M., Ott, R., Hufnagel, T., Wright, P., Hemker, K. (2003).  Microstructural evolution of platinum modified nickel aluminide bond coat during thermal cycling.  Surface and Coatings Technology.  163.  25–30.
  • Chen, M., McCauley, J. W., Hemker, K. (2003).  Shock-induced localized amorphization in boron carbide.  Science.  299(5612).  1563–1566.
  • Chen, M., Glynn, M., Ott, R., Hufnagel, T., Hemker, K. (2003).  Submitted to Acta Mater..
  • Zupan, M., Hemker, K. (2003).  Yielding behavior of aluminum-rich single crystalline $γ$-TiAl.  Acta materialia.  51(20).  6277–6290.
  • Zupan, M., Hemker, K. (2002).  Application of Fourier analysis to the laser based interferometric strain/displacement gage.  Experimental mechanics.  42(2).  214–220.
  • Fritz, T., Cho, H., Hemker, K., Mokwa, W., Schnakenberg, U. (2002).  Characterization of electroplated nickel.  Microsystem Technologies.  9(1-2).  87–91.
  • Pan, D., Glynn, M., Chen, M., Hemker, K. (2002).  Elevated temperature mechanical behavior of diffusion aluminide bond coat layers.  Creep Deformation: Fundamentals and Applications as held at the 2002 TMS Annual Meeting.  209–218.
  • Sharpe, W., Hemker, K. (2002).  Mechanical testing of free-standing thin films.  Materials Research Society Symposium Proceedings.  687.  293–304.
  • Legros, M., Hemker, K., Gouldstone, A., Suresh, S., Keller-Flaig, R., Arzt, E. (2002).  Microstructural evolution in passivated Al films on Si substrates during thermal cycling.  Acta materialia.  50(13).  3435–3452.
  • Boehlert, C., Dimiduk, D., Hemker, K. (2002).  The phase evolution, mechanical behavior, and microstructural instability of a fully-lamellar Ti–46Al (at.%) alloy.  Scripta materialia.  46(4).  259–267.
  • Cho, H., Babcock, W., Last, H., Hemker, K. (2001).  Annealing effects on the microstructure and mechanical properties of LIGA nickel for MEMS.  MATERIALS RESEARCH SOCIETY SYMPOSIUM PROCEEDINGS.  657.  EE5–23.
  • Blum, M., Fellmann, H., Franz, H., Jarczyk, G., Ruppel, T., Segtrop, K., Laudenberg, H., Hemker, K. (2001).  Commissioning of a prototype plant for the economical mass production of TiAl-valves.  Structural Intermetallics.  131–135.
  • Savage, M., Tatalovich, J., Zupan, M., Hemker, K., Mills, M. (2001).  Deformation mechanisms and microtensile behavior of single colony Ti–6242Si.  Materials Science and Engineering: A.  319.  398–403.
  • Zupan, M., Hayden, M. J., Boehlert, C., Hemker, K. (2001).  Development of high-temperature microsample testing.  Experimental Mechanics.  41(3).  242–247.
  • Xu, F., Trolier-McKinstry, S., Ren, W., Xu, B., Xie, Z., Hemker, K. (2001).  Domain wall motion and its contribution to the dielectric and piezoelectric properties of lead zirconate titanate films.  Journal of Applied Physics.  89(2).  1336–1348.
  • Legros, M., Dehm, G., Keller-Flaig, R., Arzt, E., Hemker, K., Suresh, S. (2001).  Dynamic observation of Al thin films plastically strained in a TEM.  Materials Science and Engineering: A.  309.  463–467.
  • Sharpe, Jr, W. N., Jackson, K. M., Hemker, K., Xie, Z. (2001).  Effect of specimen size on Young’s modulus and fracture strength of polysilicon.  Microelectromechanical Systems, Journal of.  10(3).  317–326.
  • Balk, T., Hemker, K. (2001).  Experimental observations of dislocation core structures in gold and iridium.  Materials Science and Engineering: A.  309.  108–112.
  • Balk, T., Hemker, K. (2001).  High resolution transmission electron microscopy of dislocation core dissociations in gold and iridium.  Philosophical Magazine A.  81(6).  1507–1531.
  • Zupan, M., Hemker, K. (2001).  High temperature microsample tensile testing of $γ$-TiAl.  Materials Science and Engineering: A.  319.  810–814.
  • Balk, T., Kumar, M., Hemker, K. (2001).  Influence of Fe substitutions on the deformation behavior and fault energies of Ni 3 Ge–Fe 3 Ge L1 2 intermetallic alloys.  Acta materialia.  49(10).  1725–1736.
  • Sharpe, W., Hemker, K. (2001).  Mechanical Testing of Free-Standing Thin Films.  MRS Proceedings.  687.  B10–6.
  • Hemker, K., Last, H. (2001).  Microsample tensile testing of LIGA nickel for MEMS applications.  Materials Science and Engineering: A.  319.  882–886.
  • Hemker, K., Dimiduk, D., Clemens, H., Darolia, R., Inui, H., Larsen, J., Sikka, V., Thomas, M., Whittenberger, J. (2001).  Structural intermetallics 2001.  Third International Symposium on Structural Intermetallics.  2001.
  • Zupan, M., Hemker, K. (2000).  High temperature microsample tensile experiments.  Microscale Systems: Mechanics and Measurements Symposium.  50–55.
  • Schneibel, J., Hemker, K., Noebe, R., Hanada, S., Sauthoff, G. (2000).  High-Temperature Ordered Intermetallic Alloys IX as held at the 2000 MRS Fall Meeting.
  • Zupan, M., Hemker, K. (2000).  Measurement of the Tension/Compression Asymmetry Exhibited by Single Crystalline $γ$-Ti 55.5 at% Al.  MRS Proceedings.  646.  N7–9.
  • Pan, D., Wright, P., Hemker, K. (2000).  Measuring the Properties of Diffusion Aluminide Bond Coat Layers with Microsample Tensile Testing.  MATERIALS RESEARCH SOCIETY SYMPOSIUM PROCEEDINGS.  645.  43.
  • Legros, M., Elliott, B., Rittner, M., Weertman, JR., Hemker, K. (2000).  Microsample tensile testing of nanocrystalline metals.  Philosophical magazine A.  80(4).  1017–1026.
  • Agnew, SR., Elliott, B., Youngdahl, C., Hemker, K., Weertman, JR. (2000).  Microstructure and mechanical behavior of nanocrystalline metals.  Materials Science and Engineering: A.  285(1).  391–396.
  • Glynn, M. L., Ramesh, K., Wright, P., Hemker, K. (2000).  Modeling effects of material properties and three-dimensional surface roughness on thermal barrier coatings.  MRS Proceedings.  645.  M4–6.
  • Dirras, G. F., Coles, G., Wagner, A. J., Carlo, S., Newman, C., Hemker, K., Sharpe, W. (2000).  On the Role of the Underlying Microstructure on the Mechanical Properties of Microelectromechanical Systems (MEMS) Materials.  MRS Proceedings.  657.  EE5–22.
  • Xie, Z., Pan, D., Last, H., Hemker, K. (1999).  Effect of as-processed and annealed microstructures on the mechanical properties of LIGA Ni MEMS.  MRS Proceedings.  605.  197.
  • Keller-Flaig, R., Legros, M., Sigle, W., Gouldstone, A., Hemker, K., Suresh, S., Arzt, E. (1999).  In situ transmission electron microscopy investigation of threading dislocation motion in passivated thin aluminum films.  Journal of materials research.  14(12).  4673–4676.
  • Wang, Y., Edwards, R. L., Hemker, K. (1999).  Mechanical Properties of Al Thin Films as Measured by Bulge Testing.  MRS Proceedings.  594.  135.
  • Last, H. R., Hemker, K., Witt, R. (1999).  MEMS material microstructure and elastic property modeling.  MRS Proceedings.  605.  191.
  • Zupan, M., Dimiduk, D., Hemker, K. (1999).  Microsample testing of single crystalline Ti-52 at. pct Al and Ti-55. 5 at. pct Al.  High temperature ordered intermetallic alloys VIII.
  • Jayaraman, S., Edwards, R., Hemker, K. (1999).  Relating mechanical testing and microstructural features of polysilicon thin films.  Journal of materials research.  14(03).  688–697.
  • Weertman, JR., Farkas, D., Hemker, K., Kung, H., Mayo, M., Mitra, R., Van Swygenhoven, H. (1999).  Structure and mechanical behavior of bulk nanocrystalline materials.  Mrs Bulletin.  24(02).  44–53.
  • Chichili, D., Ramesh, K., Hemker, K. (1999).  The influence of deformation twinning on the mechanical response of alpha-titanium.  Advances in Twinning.  187–196.
  • Kumar, M., Hemker, K. (1998).  Characterization of superdislocation dissociations in Al 66 Ti 25 Cr 9 with transmission electron microscopy observations and image simulations.  Journal of materials research.  13(03).  610–624.
  • Wang, P., Kumar, M., Hemker, K., Vasudevan, V. K. (1998).  Characterization of unusual stacking faults and dislocations in the massive $γ$ m-phase in a quenched Ti–46 at% Al alloy.  Materials Letters.  35(5).  283–289.
  • Balk, T., Kumar, M., Mryasov, O., Freeman, A., Hemker, K. (1998).  Characterizing Deformation Mechanisms in Ni 3 Ge-Fe 3 Ge Intermetallic Alloys.  MRS Proceedings.  552.  KK10–8.
  • Kazeoka, M., Hiramatsu, H., Seo, W., Koumoto, K., Shima, K., Mitsugi, N., Nagata, H., Adolf, D., Martin, J., Chambers, R., others. (1998).  iJMR Abstracts.  MRS BULLETIN.
  • Kumar, M., Balk, T., Hemker, K. (1998).  Measurement of Planar Fault Energies in Ni 3 Ge-Fe 3 Ge Intermetallic Alloys.  MRS Proceedings.  538.  329.
  • Zupan, M., Dimiduk, D., Hemker, K. (1998).  Microsample Testing of Single Crystalline Ti-52 at% Al and Ti-55.5 at% Al.  MRS Proceedings.  552.  KK8–15.
  • Lu, M., Hemker, K. (1998).  Microstructural evolution during creep of single-phase gamma TiAl.  Metallurgical and Materials Transactions A.  29(1).  99–104.
  • Balk, T., Kumar, M., Hemker, K. (1998).  Relating alloy chemistry, dislocation structure and flow strength in the (Ni x Fe 1- x) 3 Ge system.  Scripta materialia.  39(4).  577–582.
  • Agnew, SR., Elliott, B., Youngdahl, C., Hemker, K., Weertman, JR. (1998).  Structure and mechanical properties of nanocrystalline metals- with opportunities for modeling.  Nineteenth Riso International Symposium on Materials Science 1998.  1–14.
  • Zupan, M., Hemker, K. (1998).  Tension and compression testing of single-crystalline gamma Ti-55.5 pct Al.  Metallurgical and Materials Transactions A.  29(1).  65–71.
  • Chichili, D., Ramesh, K., Hemker, K. (1998).  The high-strain-rate response of alpha-titanium: experiments, deformation mechanisms and modeling.  Acta materialia.  46(3).  1025–1043.
  • Lu, M., Hemker, K. (1998).  The influence of pre-strain on the flow strength and microstructural evolution of polycrystalline $γ$-TiAl.  Philosophical Magazine A.  77(2).  325–339.
  • Kumar, M., Hemker, K. (1997).  Characterization of dislocation structures associated with small-angle boundaries in annealed L1 Ni Ge.  Philosophical magazine letters.  76(6).  399–408.
  • Hemker, K. (1997).  Correlating dislocation core structures with weak beam transmission electron microscopy observations.  Philosophical Magazine A.  76(1).  241–265.
  • Jayaraman, S., Edwards, R., Hemker, K. (1997).  Determination of the mechanical properties of polysilicon thin films using bulge testing.  MRS Proceedings.  505.  623.
  • Lu, M., Hemker, K. (1997).  Intermediate temperature creep properties of gamma TiAl.  Acta materialia.  45(9).  3573–3585.
  • Legros, M., Kumar, M., Jayaraman, S., Hemker, K., Sharpe, W. (1997).  Microstructural observations of LPCVD double layer polysilicon thin film tensile specimens.  MRS Proceedings.  472.  275.
  • Lu, M., Hemker, K. (1997).  Transient creep experiments for single phase gamma TiAl above the peak temperature.  Creep and fracture of engineering materials and structures.  299–308.
  • Viguier, B., Hemker, K. (1996).  Characterizing faulted dipoles in deformed gamma TiAl.  Philosophical Magazine A.  73(3).  575–599.
  • Ti47Al51Mn, S. P., Lu, M., Hemker, K. (1996).  COTTRELL-STOKES TEMPERATURE CHANGE EXPERIMENTS FOR.  Deformation and fracture of ordered intermetallic materials III: proceedings of a symposium sponsored by the Structural Materials Division (SMD) of the Minerals, Metals & Materials Society (TMS), held during Materials Week’96, in Cincinnati, Ohio, October 6-10, 1996, hosted by the Minerals, Metals & Materials Society and the Materials Information Society (ASM International).  3.  239.
  • Chichili, D., Ramesh, K., Hemker, K. (1996).  High strain rate deformation mechanisms in alpha titanium.  The Johannes Weertman Symposium.  437–448.
  • Hemker, K., Mills, M. (1996).  Measurements of Antiphase Boundary and Complex Stacking Fault Energies in Binary and Binary-Doped Ni sub 3 Al Using TEM.  Philos. Mag. A.  2.  305–324.
  • Legros, M., Hemker, K., LaVan, D., Sharpe, W., Rittner, M., Weertman, JR. (1996).  Micro-tensile testing of nanocrystalline Al/Zr alloys.  MRS Proceedings.  457.  273.
  • Lu, M., Hemker, K. (1996).  Monotonic and transient creep experiments for single phase gamma TiAl at intermediate temperatures.  MRS Proceedings.  460.  269.
  • Hemker, K., Kumar, M., Balk, T. (1996).  OBSERVING DISLOCATION CORES AND RELATING THEIR STRUCTURE TO MACROSCOPIC DEFORMATION PROCESSES.  Deformation and fracture of ordered intermetallic materials III: proceedings of a symposium sponsored by the Structural Materials Division (SMD) of the Minerals, Metals & Materials Society (TMS), held during Materials Week’96, in Cincinnati, Ohio, October 6-10, 1996, hosted by the Minerals, Metals & Materials Society and the Materials Information Society (ASM International).  3.  311.
  • Balk, T. J., Kumar, M., Hemker, K. (1996).  Relating Mechanical Properties with Dislocation Cores in Ni 3 Ge-Fe 3 Ge Intermetallic Alloys.  MRS Proceedings.  460.  641.
  • Zupan, M., LaVan, D., Hemker, K. (1996).  Tensile and Compression Testing of Single-Crystal Gamma Ti-55.5 Al.  MRS Proceedings.  460.  171.
  • Ramesh, K., Chichili, D., Hemker, K. (1996).  The high-strain-rate response of alpha-titanium: experiments, deformation mechanisms and modeling.  Acta Materialia(USA).  46(3).  1025–1043.
  • Viguier, B., Hemker, K., Bonneville, J., Louchet, F., Martin, J. (1995).  Modelling the flow stress anomaly in $γ$-TiAl I. Experimental observations of dislocation mechanisms.  Philosophical Magazine A.  71(6).  1295–1312.
  • Viguier, B., Hemker, K., Martin, J. (1994).  Dislocation Core Structures in Single Phase TiAl.  STRENGTH OF MATERIALS-INTERNATIONAL CONFERENCE-.  113–113.
  • Viguier, B., Hemker, K., Vanderschaeve, G. (1994).  Factors affecting stacking fault contrast in transmission electron microscopy Comparisons with image simulations.  Philosophical Magazine A.  69(1).  19–32.
  • Viguier, B., Cieslar, M., Hemker, K., Martin, J. (1994).  Quantitative Observations in Dislocation Mechanisms in Gamma TiAl.  MRS Proceedings.  364.  653.
  • Viguier, B., Bonneville, J., Hemker, K., Martin, J. (1994).  The temperature dependence of the mechanical properties of gamma TiAl.  MRS Proceedings.  364.  629.
  • Viguier, B., Hemker, K., Schaeublin, R., Martin, J. (1993).  Characterizing faulted dipoles in TiAl with electron microscopy and computed image simulations.  Le Journal de Physique IV.  3(C7).  C7–441.
  • Hemker, K., Viguier, B., Mills, M. (1993).  Dislocation core structures in the ordered intermetallic alloy TiAl.  Materials Science and Engineering: A.  164(1).  391–394.
  • Hemker, K., Nix, W. (1993).  High-temperature creep of the intermetallic alloy Ni3Al.  Metallurgical Transactions A.  24(2).  335–341.
  • Hemker, K., Mills, M. (1993).  Measurements of antiphase boundary and complex stacking fault energies in binary and B-doped Ni3Al using TEM.  Philosophical Magazine A.  68(2).  305–324.
  • Baluc, N., Bonneville, J., Hemker, K., Martin, J., Schäublin, R., Spätig, P. (1993).  On the relationship between unusual mechanical properties and deformation substructures in ordered Ni 3 Al.  Materials Science and Engineering: A.  164(1).  379–383.
  • Nix, W. (1992).  A critical analysis of existing models for plastic flow in N13AI: Comparisons with transient deformation experiments.  J. Mater. Res.  7(8).
  • Hemker, K., Viguier, B., Schäublin, R., Mills, M. (1992).  Characterizing Defect Structures in Ordered Alloys Using Electron Microscopy and Computed Image Simulations.  MRS Proceedings.  288.  329.
  • Hemker, K., Mills, M., Forbes, K., Sternbergh, D., Nix, W. (1991).  A Description of Octahedral Glide in Ni sub 3 Al Based on Observations of Transient Deformation.  Strength of Metals and Alloys..  1.  271–278.
  • Hemker, K. (1991).  A Study of the High-Temperature Deformation of the Intermetallic Alloy Ni sub 3 Al.  Dissertation Abstracts International.  51(12).  206.
  • Hemker, K., Mills, M., Nix, W. (1991).  An investigation of the mechanisms that control intermediate temperature creep of Ni 3 Al.  Acta metallurgica et materialia.  39(8).  1901–1913.
  • Hemker, K. (1991).  C. Transient Deformation in the Intermetallic Alloy, Ni3A!.  MAR 0 8 1991 Attention: Dr. Alan Rosenstein.  15.
  • Baluc, N., Schäublin, R., Hemker, K. (1991).  Methods for determining precise values of antiphase boundary energies in Ni3Al.  Philosophical magazine letters.  64(5).  327–334.
  • Hemker, K., Nix, W. (1990).  AN INVESTIGATION OF CREEP IN Ni3AI (B, Hf).  Creep and fracture of engineering materials and structures: proceedings of the Fourth International Conference held at University College, Swansea, 1st-6th April, 1990.  463.  51.
  • Hemker, K., Nix, W. (1988).  An Investigation of the Creep of Ni sub 3 Al (B, Hf) Single Crystals at Intermediate Temperatures.  High-Temperature Ordered Intermetallic Alloys. III.  481–486.
  • Hemker, K., Glasgow, T. K. (1987).  Chill block melt spinning of nickel-molybdenum alloys.  Journal of materials science.  22(3).  798–802.
  • Miner, R., Gabb, T., Gayda, J., Hemker, K. (1986).  Orientation and temperature dependence of some mechanical properties of the single-crystal nickel-base superalloy René N4: Part III. Tension-compression anisotropy.  Metallurgical Transactions A.  17(3).  507–512.
  • Tewari, N. J., Hemker, K., Glasgow, T. (1985).  MICROSTRUCTURES IN RAPIDLY SOLIDIFIED NI-MO ALLOYS.  Rapidly solidified materials: proceedings of an international conference, San Diego, California, USA, 3-5 February 1985.  243.
  • Jayaraman, N., Tewari, S., Hemker, K., Glasgow, T. (1985).  Microstructures in rapidly solidified Ni-Mo alloys.
Books
  • Hemker, K. (2010).  Shear Stresses, Dislocations and Grain Boundaries.  Minerals, Metals and Materials Society/AIME, 420 Commonwealth Dr., P. O. Box 430 Warrendale PA 15086 USA.
  • Jonnalagadda, K., Sharon, J., Hemker, K., Ramesh, K. (2010).  Visualization of Failure Mechanisms in Nanocrystalline Thin Films.  Minerals, Metals and Materials Society/AIME, 420 Commonwealth Dr., P. O. Box 430 Warrendale PA 15086 USA.
  • Hemker, K., Lee, J. K., Yoo, M. (2005).  Festschrift in Honour of Dr. Man Hyung Yoo: Selected Papers from the Symposium on Defects and Deformation of Crystalline Solids Held as Part of the 2003 TMS Annual Meeting San Diego, California, 2-6 March 2003.
  • Yoo, M., Lee, J., Hemker, K. (2005).  Selected papers from the symposium on defects and deformation of crystalline solids.  Taylor & Francis Limited.
  • Hemker, K. (1990).  A Study of the High Temperature Deformation of the Intermetallic Alloy Ni3A1.
Book Chapters
  • Mills, M., Hemker, K., Nix, W. (1991).  Dislocation models for anomalous flow in L1 2 compounds.  120th TMS annual meeting.
Other Publications
  • Sharon, J. A., Jones, J., Mohammed, J., Hemker, K. (2012).  Small-scale mechanical characterization of space-exposed fluorinated ethylene propylene recovered from the Hubble Space Telescope..  Sandia National Laboratories.
  • Hemker, K. (2012).  Society Perspective: Getting the Word Out About the Importance of MSE.  SPRINGER 233 SPRING ST, NEW YORK, NY 10013 USA.
  • Sharon, J. A., Zhang, Y., Hu, G., Ramesh, K., Hemker, K. (2012).  Stress-driven grain growth in ultrafine-grained Mg thin film..  Sandia National Laboratories.
  • Sharon, J. A., Hemker, K., Zhang, Y., Legros, M. (2011).  Mechanical Behavior and Active Deformation Mechanisms in Thin Film Mg..  Sandia National Laboratories (SNL-NM), Albuquerque, NM (United States).
  • Haj-Taieb, M., Aktaa, J., Bade, K. (2009).  Development of high temperature electrodeposited LIGA MEMS materials.  Forschungszentrum Karlsruhe.
  • Shende, A., Nair, A., Jiang, W., Das, K., Ramesh, K., Hemker, K., Igusa, T. (2008).  Vrginia Tech Student Support.  JOHNS HOPKINS UNIV BALTIMORE MD GWC WHITING SCHOOL OF ENGINEERING.
  • Srolovitz, D., Hemker, K., Evans, A., Hutchinson, J., Pollock, T., Smith, J. (2006).  Knowledge Oriented Materials Engineering of Layered Thermal Barrier Systems (NOMELT).  DTIC Document.
  • Hemker, K., Evans, A., Hou, P., Hutchinson, J., Pollock, T., Smith, J., Srolovitz, D. (2005).  Knowledge Oriented Materials Engineering of Layered Thermal Barrier System (Nomelt).  JOHNS HOPKINS UNIV BALTIMORE MD.
  • Lee, J., Hemker, K. (2005).  Special issue: Selected papers from the symposium of defects and deformation of crystalline solids, San Diego, California, 2-6 March, 2003-Preface.  TAYLOR & FRANCIS LTD 4 PARK SQUARE, MILTON PARK, ABINGDON OX14 4RN, OXON, ENGLAND.
  • Hemker, K. (2004).  Characterization of Dislocation Core Structures in BCC Metals.  DTIC Document.
  • Hemker, K., Chen, M. (2001).  Experimental Determination of Dislocation Core Structures by HRTEM.  DTIC Document.
  • Balk, T., Kumar, M., Mryasov, O., Freeman, A., Hemker, K. (1999).  Characterizing deformation mechanisms in Ni ${$sub 3$}$ Ge-Fe ${$sub 3$}$ Ge intermetallic alloys.  Johns Hopkins Univ., Baltimore, MD (US).
  • Kumar, M., Balk, T., Hemker, K. (1999).  Measurement of planar fault energies in Ni ${$sub 3$}$ Ge-Fe ${$sub 3$}$ Ge intermetallic alloys.  Johns Hopkins Univ., Baltimore, MD (US).
  • Hemker, K. (1998).  Promoting Atomic Scale Engineering by Quantifying Experimental Observations of Dislocation Cores.  DTIC Document.
  • Balk, T., Kumar, M., Hemker, K. (1997).  Relating mechanical properties with dislocation cores in Ni ${$sub 3$}$ Ge-Fe ${$sub 3$}$ Ge intermetallic alloys.  Materials Research Society, Pittsburgh, PA (United States).
  • Lennon, A., Ramesh, K., Hemker, K. (1996).  Mechanical properties of polycrystalline tungsten.  Metal Powder Industries Federation, Princeton, NJ (United States).
  • Viguier, B., Cieslar, M., Bonneville, J., Martin, J., Hemker, K. (1995).  Deformation mechanisms in polycrystalline gamma TiAl.  Minerals, Metals and Materials Society, Warrendale, PA (United States).
Conference Proceedings
  • Mompiou, F., Legros, M., Boé, A., Coulombier, M., Raskin, J., Pardoen, T., SHARON, J., Hemker, K.  Exploring grain boundary response to a mechanical stress in small grained metals by in-situ Transmission Electron Microscopy.  XIV International Conference on Intergranular and Interphase Boundaries in Materials, IIB 2013.
  • Young, A. T., Farias, S. L., Hemker, K., Cammarata, R. C. (2014).  Manufacturing and Fracture Behavior of Large Scale Multilayered Metal-Ceramic Nanocomposites.  MRS Symp. Proc..  1650.  jj01-05.
  • Szyniszewski, S., Ryan, S., Ha, S., Zhang, Y., Weihs, T., Hemker, K., Guest, J. (2014).  Simulation of frictional damping in metallic woven materials.
  • Florando, J., Barton, N., El-Dasher, B., Kumar, M., Chen, C., Ramesh, K., Hemker, K. (2013).  Effect of Pre-Strain on the Twinning Behavior in Tantalum.  APS Shock Compression of Condensed Matter Meeting Abstracts.  1.  1003.
  • Florando, J., McNaney, J., LeBlanc, M., Kumar, M., Chen, C., Ramesh, K., Hemker, K. (2011).  Effect of strain rate and dislocation density on the twinning behavior in Tantalum.  APS Shock Compression of Condensed Matter Meeting Abstracts.  1.  5001.
  • Boe, A., Coulombier, M., Colla, M., Brugger, C., Dille, J., Proost, J., Godet, S., Legros, M., Mompiou, F., Sharon, J., others. (2009).  Lab-on-chip tensile stages for nanomechanical testing and TEM analysis.  35th International Conference on Micro & Nano Engineering-MNE’09.
  • Sharpe, W., Pulskamp, J., Mendis, B., Eberl, C., Gianola, D., Polcawich, R., Hemker, K. (2006).  Tensile stress-strain curves of gold film.  ASME 2006 International Mechanical Engineering Congress and Exposition.  533–540.
  • Chen, M., Glynn, M., Pan, D., Ramesh, K., Hemker, K., Ott, R., Hufnagel, T. (2003).  Influence of martensitic transformation on the durability of TBC systems.  ASME 2003 International Mechanical Engineering Congress and Exposition.  489–495.
  • Cho, H., Hemker, K., Lian, K., Goettert, J. (2002).  Tensile, creep and fatigue properties of LIGA nickel structures.  Micro Electro Mechanical Systems, 2002. The Fifteenth IEEE International Conference on.  439–442.
  • Hemker, K., Mills, M. J. (1993).  Measuring APB and CSF Energies in Ni3Al with Weak-Beam TEM and Image Simulations.  Solid State Phenomena.  35.  449–454.
  • HEMKER, K., GLASGOW, T. (1984).  CHILL BLOCK MELT SPINNING OF NI-MO ALLOYS.  JOURNAL OF METALS.  36(7).  14–14.
  • MINER, R., GABB, T., GAYDA, J., HEMKER, K. (1984).  TEMPERATURE, ORIENTATION, AND TENSION-COMPRESSION DEPENDENCE OF YIELDING IN A SINGLE-CRYSTAL NICKEL-BASE SUPERALLOY.  JOURNAL OF METALS.  36(12).  80–80.
Patents
  • Hemker, K., Guest, J., Ryan, S., Szyniszewski, S., Weihs, T., Zhao, L.  "Woven Lattices for Chemical Sensing "
  • Hemker, K., Weihs, T., Ryan, S., Zhao, L., Ha, S., Zhang, Y., Guest, J.  "Combining complex flow manifold with three dimensional woven lattices as a thermal management unit", 2016.
  • Hemker, K., Weihs, T., Ryan, S., Zhao, L., Ha, S., Zhang, Y., Lin, S., Guest, J., Sharp, K.  "Three dimensional woven lattices as multi-functional heat exchanger", 2016.
  • Hemker, K., Guest, J., Ryan, S., Szyniszewski, S., Weihs, T.  "3D Lattice Weaves with Tailored Damping Properties"
  • Hemker, K., Guest, J., Ha, S., Lin, S., Ryan, S., Sharp, K., Weihs, T., Zhang, Y., Zhao, L.  "3D Woven Lattices as Multi-Functional Heat Exchanger "
  • Hemker, K., Guest, J., Ha, S., Kuznetsov, S., Ryan, S., Szyniszewski, S., Weihs, T., Zhang, Y., Zhao, L.  "3D Woven Lattices as Novel Multi-Functional Architectures "
  • Hemker, K., Guest, J., Ha, S., Ryan, S., Weihs, T., Zhang, Y., Zhao, L.  "Combining Complex Flow Manifold with 3D Woven Lattices as a Thermal Management Unit "
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