Publications
D. Khanan, J.J. Beaman, and D. Kovar, “Static and Dynamic Open Loop Control of Selective Laser Flash Sintering with DC Electric Fields,” International Journal of Applied Ceramic Technology, in press, (10 pages) 2024. DOI:10.1111/ijac.14955
R.F.P. Stone, M. Gammage, J. Wang, M. Cullinan, D. Kovar, and Z. Sha, “A Cooperative Framework for Multi-Nozzle Micro-Cold Spray Systems, Proceedings of the 35th Annual International Solid Freeform Fabrication Symposium, Austin, TX, August 11-14, 2024. In press.
T. Kothapalle, A.V. Melachuri, J.J. Rogers, B. Tran, M.F. Becker, and D. Kovar, “Simulation of High Strain Rate Contact of Single Crystal Al Spheres,” Computational Materials Science, 246 113415 (12 pages) (2024). DOI: 10.1016/j.commatsci.2024.113415
S. Bierschenk and D. Kovar, “Micro-cold Spray Deposition of YSZ Films from Ultrafine Powders Using a Pressure Relief Channel Nozzle,” Journal of Thermal Spray Technology, 33, pp. 2022–2033 (2024). DOI: 10.1007/s11666-024-01813-4
S. Bierschenk and D. Kovar, “A Nozzle Design for Mitigating Particle Slowing in the Bow Shock Region during Micro-Cold Spray of 8-YSZ Films,” Journal of Aerosol Science, 179 106360 (16 pages) (2024). DOI: 10.1016/j.jaerosci.2024.106360
A. Moyers, M.F. Becker, and D. Kovar, “A Strain Density Function to Analyze Particle Size Effects During High Velocity Impacts of Yttria,” Journal of the American Ceramic Society, 107 [6] pp. 3925-3944 (2024). DOI: 10.1111/jace.19708
S. Landsberger, W. Charlton, K. Clarno, O. Ezekoye, D. Kovar, D. Haas, and M. Pryor, “Distance Learning at the MS and PhD Levels in the Nuclear and Radiation Engineering Program, Nuclear and Applied Robotics, Materials Science and Engineering and Walker Department of Mechanical Engineering at the University of Texas at Austin,” Proceedings of the 2023 ANS Winter Conference and Expo, November 12–15, 2023, Washington, D.C., pp. 98-99 (2023). DOI: 10.13182/T129-42480
T.V. Chitrakar, M.F. Becker, and D. Kovar, “Influence of Crystallographic Orientation on the Deformation of Ag Nanoparticles During High-Speed Impact,” Journal of Thermal Spray Technology, 32 pp. 2683–2700 (2023). DOI:10.1007/s11666-023-01664-5
K.J. Bayazitoglu, M. Cassoli, J.J. Beaman, and D. Kovar, “Spreading and Packing of Alumina Powder Using a Displacement-controlled Roller in SLFS,” Proceedings of the 34th Annual International Solid Freeform Fabrication Symposium, pp 1356-1364. August 14-16, 2023. weblink
S. Bierschenk, M.F. Becker, and D. Kovar, “Effect of an Oxide Layer on High Velocity Impact of Tantalum Particles Characterized using Molecular Dynamics,” Applied Surface Science, 640 158394 (15 pages) (2023). DOI: 10.1016/j.apsusc.2023.158394
L.G. Matto, D. Hagen, J.J. Beaman, and D. Kovar, “The Onset of Selective Laser Flash Sintering in Undoped and Doped Lanthanum Chromite,” International Journal of Ceramic Engineering and Science, 5 [6] e10189 (16 pages), (2023). DOI: 10.1002/ces2.10189
S. Burlison, M.F. Becker, and D. Kovar, “A Molecular Dynamics Study of the Effects of Particle Velocity and Particle Diameter on the Impact Behavior of Zinc Oxide Nanoparticles,” Modelling and Simulation in Materials Science and Engineering,” 31 075008 (17 pages) (2023). DOI: 10.1088/1361-651X/acf060
D. Hagen, J.J. Beaman, and D. Kovar, “Mechanisms Responsible for the Onset of Selective Laser Flash Sintering of 8-YSZ, Journal of the American Ceramic Society, 106 [8] pp. 4592-4604 (2023). DOI: 10.1111/jace.19138
S. Bierschenk, M.F. Becker, and D. Kovar, "Gas and Ceramic Particle Velocities for Micro-Cold Spray," Journal of Aerosol Science, 169 106113 (20 pages) (2023). DOI: 10.1016/j.jaerosci.2022.10611
D.M. Sassaman, M.S. Ide, J.J. Beaman, and D. Kovar, “A Model for Bonding Mechanisms in Indirect Laser Powder Bed Fusion of Nylon/Alumina Blends” Additive Manufacturing, 59 103163 (11 pages) (2022). DOI: 10.1016/j.addma.2022.103163
T.V. Chitrakar, M.F. Becker, and D. Kovar, “A Quantitative Criterion to Predict Atomic Disordering During High Velocity Nanoparticle Impact,” Journal of Aerosol Science, 165 106042 (13 pages) (2022). DOI: 10.1016/j.jaerosci.2022.106042
D. Hagen, J.J. Beaman, and D. Kovar, “Effects of Inter-Particle Neck Development on the Initiation of Selective Laser Flash Sintering of 8-YSZ," Journal of the American Ceramic Society, 105 [10] pp. 6023-6040 (2022). DOI: 10.1111/jace.18574
D. Davies, A. Moyers, M.F. Becker, and D. Kovar, “Deformation and Film Formation Mechanisms During High Velocity Impact of SiC Nanoparticles,” Journal of Aerosol Science, 163 105997 (18 pages) (2022). DOI: 10.1016/j.jaerosci.2022.105997
A. Moyers, D. Davies, M.F. Becker, and D. Kovar, “Impact-induced Amorphization in Yttria Nanoparticles: A Molecular Dynamics Survey Study,” Journal of Aerosol Science, 162 105967 (15 pages) (2022). DOI: 10.1016/j.jaerosci.2022.105976
D.M. Sassaman, M.S. Ide, D. Kovar, and J.J. Beaman, “Design of an In-situ Microscope for Selective Laser Sintering, Additive Manufacturing Letters, 2 100033 (6 pages) (2022). DOI:10.1016/j.addlet.2022.100033.
M.F. Becker and D. Kovar, "A Quantitative Criterion for Predicting Solid-State Disordering During Biaxial, High Strain Rate Deformation" Modelling and Simulation in Materials Science and Engineering, 30 015006 (19 pages) (2022). DOI:10.1088/1361-651X/ac3cca
D. Sassaman, M. Ide, J. Beaman, and D. Kovar, “Geometry Limitations in Indirect Selective Laser Sintering of Alumina,” Proceedings of the 32nd Annual International Solid Freeform Fabrication Symposium, pp. 688-701, 2021. Link
P.P. Radyjowski, D.L. Bourell, D. Kovar, and J.L. Ellzey, “Additive Manufacturing of Si-SiC for Combustion Device Applications,” Proceedings of the 32nd Annual International Solid Freeform Fabrication Symposium, pp. 157-168, 2021. Link
A. Gouws, D. Hagen, A. Chen, E. Kardoulaki, J.J. Beaman, and D. Kovar, “Onset of Selective Laser Flash Sintering of AlN, International Journal of Applied Ceramic Technology, 18 [6] pp. 1988-1998 (2021). DOI: 10.1111/ijac.13840
J. Nissen, D. Sassaman, S. Lee, J. Desjardins, J.J. Beaman, and D. Kovar, “Methodology for Determining Design Rules for Helical Channels in Glass Components Produced by Selective Laser Sintering, International Journal of Applied Ceramic Technology, 18 [5] pp. 1751-1763 (2021). DOI: 10.1111/ijac.13778
S. Cortes, N. Cobo-Losey, C. Morris, M.R. Haberman, C.C. Seepersad, and D. Kovar, “Stiffness and Energy Dissipation of Polymer Matrix Composites Containing Embedded Metallic Negative Stiffness Structures,” Journal of Experimental Mechanics, 61 pp. 843–858 (2021). DOI: 10.1007/s11340-021-00705-w
J.J.H. McCallister, M.D. Gammage, J.W. Keto, M.F. Becker, and D. Kovar, “Influence of Agglomerate Morphology on Micro-Cold Spray of Ag Nanopowders,” Journal of Aerosol Science, 151 105648 (12 pages) (2021). DOI: 10.1016/j.jaerosci.2020.105648.
J.J. Beaman, D.B. Bourell, C.C. Seepersad, and D. Kovar “Additive Manufacturing: Early Past to Current Research, ASME Journal of Manufacturing Science and Engineering, 142 [11] 110812 (20 pages) (2020). DOI: 10.1115/1.4048193.
M.F. Becker and D. Kovar, “A Quantitative Criterion for Predicting Solid-State Disordering During High Strain Rate Deformation, Journal of Physics: Condensed Matter, 33 [6] 065405 (14 pages) (2020). DOI: 10.1088/1361-648X/abc4ef
J.J. Beaman, D. Kovar, D.B. Bourell, D. Hagen, “Systems and Methods for Additive Manufacturing of Ceramics”, US Patent 10,611,694, April 7, 2020.
C.C. Seepersad, J. Allison, A. Dressler, B. Boyce, D. Kovar , “An Experimental Approach for Enhancing the Predictability of Mechanical Properties of Additively Manufactured Architected Materials with Manufacturing-Induced Variability,” Chapter 17 in Uncertainty Quantification in Multiscale Materials Modeling (D. McDowell and Y. Wang, Eds.), Elsevier, March 1, 2020. ISBN: 9780081029411
D. Hagen, J.J. Beaman, and D. Kovar, “Laser Flash Sintering of YSZ,” Journal of the American Ceramic Society, 103 [2] pp. 800-808 (2020) DOI: 10.1111/jace.16771.
D. Hagen, A. Chen, J. Beaman, and D. Kovar, "Moisture Effects on Selective Laser Flash Sintering of Yttria-Stabilized Zirconia," in Proceedings of the 30th Annual International Solid Freeform Fabrication Symposium, pp. 873-891, 2019. Link
C. Knapp, T. Lienert, P. Burgardt, D. Kovar, “A Model to Predict Deposition Parameters for Directed Energy Deposition: Part I Theory and Modeling,” Rapid Prototyping Journal, 25 [6] pp. 998-1006 (2019). DOI: 10.1108/RPJ-08-2018-0221.
T.V. Chitrakar, G.J.J. Noiseau, J.W. Keto, M.F. Becker, and D. Kovar, “An Experimental and Computational Study of High-Speed Impact of Ag Nanoparticles,” Journal of Applied Physics, 125 195104 (13 pages) (2019). DOI: 10.1063/1.5063345.
D. Hagen, D. Kovar, J. Beaman, M. Gammage, “Laser Flash Sintering for Additive Manufacturing of Ceramics,” ARL-TR-8657, March 2019.
J.J.H. McCallister, J.W. Keto, M.F. Becker, and D. Kovar, “Influence of Normal Velocity on Microstructure and Density of Films Produced by Nanoparticle Impact,” AIP Advances, 9 035226 (9 pages) (2019). DOI: 10.1063/1.5080949
D. Hagen, D. Kovar and J.J. Beaman, “Effects of Electric Field on Selective Laser Sintering of Nano-Scale Ceramic Powder,” in Proceedings of the 29thAnnual International Solid Freeform Fabrication Symposium, pp. 909-915, 2018. Link
A. Drach, D. Kovar, J.M. Mikulak, and G.R. Rodin, “The Determination of In-Plane Modulus of Honeycomb Specimens Under Bending,” Journal of the American Ceramic Society, 101 [1] pp. 376–385 (2018). DOI: 10.1111/jace15189
M. Gammage, H. Celio, M.F. Becker, J.W. Keto, and D. Kovar, "Coarsening-Resistant Ag Nanoparticles Stabilized on TiOx Nanoparticles," Journal of Nanoparticle Research, 19 276 (12 pages) (2017). DOI: 10.1007/s11051-017-3981-9
T.V. Chitrakar, J.W. Keto, M.F. Becker, and D. Kovar, "Particle Deposition and Deformation from High Speed Impaction of Ag Nanoparticles," Acta Materialia, 135 pp. 252-262 (2017). DOI: 0.1016/j.actamat.2017.05.062
S.A. Cortes, J. Allison, C. Morris, M.R. Haberman, C.C. Seepersad, and D. Kovar, "Design, Manufacture and Quasi-static Testing of Metallic Negative Stiffness Structures within a Polymer Matrix," Experimental Mechanics, 57 [8] pp. 1183-1191 (2017). DOI: 10.1007/s11340-017-0290-2
C.M. Knapp, T.J. Lienert, J.S. Carpenter, and D. Kovar, “In Situ Monitoring of Directed Energy Deposition,” Proceedings of the Materials Science and Technology Conference 2016, pp. 115-122, Salt Lake City, UT, October 23-27, 2016.
M.D. Gammage, S. Stauffer, G. Henkelman, M.F. Becker, J.W. Keto, and D. Kovar, “Ethylene Binding to Au/Cu Alloy Nanoparticles,” Surface Science, 653 pp. 66-70 (2016). DOI:10.1016/j.susc.2016.05.008
D.M. Correa, T.D. Klatt, S.A. Cortes, M.R. Haberman, D. Kovar, and C.C. Seepersad, “Negative Stiffness Honeycombs for Recoverable Shock Isolation,” Rapid Prototyping Journal, 21 [2] pp. 193 - 200 (2015). DOI: 10.1108/RPJ-12-2014-0182
M. Nahar, M.F. Becker, J.W. Keto, and D. Kovar, “Low Temperature Sintering of Nanoparticulate Ag,” Journal of Electronic Materials, 44 [8] pp. 2559-2565 (2015). DOI: 10.1007/s11664-015-3678-8
D.M. Correa, T.D. Klatt, S.A. Cortes, M.R. Haberman, D. Kovar, and C.C. Seepersad, “Negative Stiffness Honeycombs for Recoverable Shock Isolation,” Proceedings of the 25th Annual International Solid Freeform Fabrication Symposium, pp. 702-713, 2014. Link to Article
C.M. Knapp, T.J. Lienert, C. Chen, and D. Kovar, “Additive Manufacturing of 1018 Steel: Process Observations and Calculations,” Proceedings of the 25th Annual International Solid Freeform Fabrication Symposium, Austin, TX, August 4-6, 2014. Link to Article
M. Asoro, P.J. Ferreira, and D. Kovar, "In situ TEM and STEM Studies of Sintering of Ag and Pt Nanoparticles, Acta Materialia, 181 pp. 173-183 (2014). DOI: 10.1016/j.actamat.2014.08.028.
M. Asoro, D. Kovar. and P.J. Ferreira, “Effects of Surface Carbon Coating on Sintering of Silver Nanoparticles: In-situ TEM Observations,” Chem. Comm., 50 [37] pp. 4835 - 4838 (2014). DOI: 10.1039/c4cc01547a
M. Asoro, D. Kovar, and P.J. Ferreira, “In-situ TEM Observations of Sublimation in Silver Nanoparticles”ACS Nano, 7 [9] pp. 7844–7852 (2013). DOI: 10.1021/nn402771j
G. Noiseau, M.F. Becker, J.W. Keto, and D. Kovar, “Deformation of Porous, Nanostructured Silver at Room Temperature and 150 ˚C,” Proceedings of the MRS Fall Meeting Symposium, Symposium GG: Mechanical Behavior of Metallic Nanostructured Materials, Boston, MA, November 25-30, 2012, Vol. 1513 mrsf12-1513-gg10-01. (6 pages) DOI: 10.1557/opl.2013.963
K.L. Gleason, J.W. Keto, D. Kovar, and M.F. Becker, "Metal and Metal-Oxide Nanoparticle Synthesis by Laser Ablation of Aqueous Aerosols," Laser Material Interactions at Micro/Nanoscales, Proceedings of the MRS Spring Meeting, Symposium TT, San Francisco, CA, April 25-29, 2011. Vol. 1365 mrss11-1365-tt03-02. DOI: 10.1557/opl.2011.1385.
M. Asoro, D. Kovar, and P. Ferreira, "In-Situ TEM Study of Sintering of Capped Silver Nanoparticles," Microscopy and Microanalysis 17 (S2) pp. 486-487 (2011). DOI: 10.1017/S1431927611003308
J. Ma, M.F. Becker, J.W. Keto, and D. Kovar, "Compositional and Microstructural Evolution During Annealing of Terfenol-D Nanoparticulate Films, J. Mater. Res., 26 [20] pp. 2672-2681 (2011). DOI: 10.1557/jmr.2011.244
M. Nahar, I.F. Gallardo, K.L. Gleason, M.F. Becker, J.W. Keto, and D. Kovar, "Metal-on-Oxide Nanoparticles Produced Using Laser Ablation of Microparticle Aerosols," J. Nanopart. Res. 13 pp. 3455-3464 (2011). DOI: 10.1007/s11051-011-0267-5
S. Rajasekhara, B. Neuner III, C. Zorman, G. Shvets, P.J. Ferreira, D. Kovar, “Influence of Impurities and Planar Defects on the Infrared Properties of Silicon Carbide Films” Appl. Phys. Lett., 98 191904 (3 pages) (2011). DOI: 10.1063/1.3585098
J. Ma, M.F. Becker, J.W. Keto, and D. Kovar, “Laser Ablation of Nanoparticles and Nanoparticulate, Thick Fe1.92Tb0.3Dy0.7 Films,” J. Mater. Res., 25 [10] pp. 1733-1740 (2010). DOI: 10.1557/JMR.2010.0234
M.A. Asoro, D. Kovar, Y. Shao-Horn, L.F. Allard, and P.J. Ferreira, “Coalescence and Sintering of Pt Nanoparticles: In-situ Observation by Aberration-Corrected HAADF STEM,” Nanotechnology 21 025701 (2010). DOI: 10.1088/0957-4484/21/2/025701
M.A. Asoro, D. Kovar, J. Damiano, and P.J. Ferreira, "Scale Effects on the Melting Behavior of Silver Nanoparticles," Microscopy and Microanalysis 16 (S2) pp. 1802-1803 (2010). DOI: 10.1017/S1431927610060812
S. Rajasekhara, B. Neuner III, G. Shvets, P.J. Ferreira, D. Kovar, “The Influence of Microstructure on the Optical Quality of Silicon Carbide Films,” Microscopy and Microanalysis 16 (S2) pp. 1450-1451 (2010). DOI: 10.1017/S1431927610060587
M. Nahar and D. Kovar, “Morphological Stability of Gold Nanoparticles on Titania Nanoparticles,” Ceramic Transactions vol. 223 – Proceedings of the International Symposium on Controlled Processing of Nanoparticle Structures and Composites, pp. 23-30, Ed. by K. Lu, C. Li, E. Medvedovski, and E.A. Olevsky, MS&T’09, Pittsburgh, PA, October 25 – 29, 2009. DOI: 10.1002/9780470931011.ch3
J. Ma, D.T. O’Brien, and D. Kovar, “Amorphous Terfenol-D Films using Nanosecond Pulsed Laser Deposition,” Thin Solid Films, 518 pp. 319-323 (2009). DOI: 10.1016/j.tsf.2009.07.131
M. Asoro, Y. Shao-Horn, D. Kovar, L.F. Allard, and P.J. Ferreira, "Determination of Sintering Parameters from In-Situ Aberration-Corrected STEM Imaging of Coalescence of Pt Nanoparticles," Microscopy and Microanalysis 15 (S2) pp. 730-731 (2009). DOI: 10.1017/S1431927609096913
C. Huang, E.-J. Yun, J. Ma, J. Keto, M.F. Becker, and D. Kovar, “Synthesis and Characterization of Permalloy Nanostructured Films by Deposition of Laser Ablated Nanoparticles,” J. Magn. Mag. Mater.321, pp. 2537-2540 (2009). DOI: 10.1016/j.jmmm.2009.03.029
M.F. Becker, J.W. Keto, and D. Kovar, “Methods for Producing Coated Nanoparticles from Microparticles,” US Patent Number 7,527,824, May 5, 2009. Licensed to Intellectual Ventures in 2008.
C. Torres-Garibay and D. Kovar, “Perovskite-Related Intergrowth Cathode Materials with Thin YSZ Electrolytes for Intermediate Temperature Solid Oxide Fuel Cells,” J. Power Sources 192 pp. 396-399 (2009). DOI: 10.1016/j.jpowsour.2009.02.072
C. Torres-Garibay, D. Kovar and A. Manthiram “Ln0.6Sr0.4Co1-yFeyO3-δ (Ln = La and Nd; y = 0 and 0.5) Cathodes With Thin Yttria-Stabilized Zirconia Electrolytes for Intermediate Temperature Solid Oxide Fuel Cells,” J. Power Sources, 187, 480-486 (2009). DOI: 10.1016/j.jpowsour.2008.11.025
A.D. Albert, M.F. Becker, J.W. Keto, and D. Kovar, “Low Temperature, Pressure-Assisted Sintering of Nanoparticulate Silver Films,” Acta Mater. 56, pp. 1820-1829 (2008). DOI:10.1016/j.actamat.2007.12.034
D. Kovar, A.D. Albert, M.F. Becker, and J.W. Keto, “Pressure-Assisted Sintering of Nanocrystalline Silver Lines Produced by Laser Ablation of Microparticle Aerosols,” Proceedings of the ASME Conference on Manufacturing Science and Engineering (MSEC 2007), Advances in Synergistic Effects of Materials and Processing, No. MSEC2007-31170, 2007, Atlanta, GA, October 15-18. DOI: 10.1115/MSEC2007-31170
C. Huang, M.F. Becker, J.W. Keto, and D. Kovar, "Annealing of Nanostructured Silver Films Produced by Supersonic Deposition of Nanoparticles," J. Appl. Phys. 102 054308 (2007). DOI: 10.1063/1.2776163
C. Huang, W.T. Nichols, D.T. O’Brien, M.F. Becker, D. Kovar, and J.W. Keto, “Supersonic Jet Deposition of Silver Nanoparticle Aerosols: Correlations of Impact Conditions and Film Morphologies,” J. Appl. Phys. 101 064902 (2007). DOI: 10.1063/1.2710304
J. Baek, J. Ma, M.F. Becker, J.W. Keto, and D. Kovar, "Correlations Between Optical Properties, Microstructure, and Processing Conditions of AlN Thin Films Fabricated by PLD," Thin Solid Films, 515 pp. 7096-7104 (2007). DOI: 10.1016/j.tsf.2007.03.003
A.D. Albert, C. Huang, M.F. Becker, J.W. Keto, and D. Kovar, “Deposition of Nanostructured Silver Lines and Films from Aerosols Produced by LAMA,” Proceedings of the International Symposium on Synergistic Effects of Materials and Processing (ISSEMP 2006), JSME No. 06-207, pp. 1-6, Japan Society of Mechanical Engineers, Kumamoto, Japan, September 19, 2006.
J.W. Keto, M.F. Becker, D. Kovar, G. Malyavanatham, A. Muller, D.T. O'Brien, C.K. Shih, and J. Wang, "Nanoparticles of Er-Doped Glass Produced by Laser Ablation of Microparticles,"J. Opt. Soc. Am. B., 23 [8] pp. 1581-1585 (2006). DOI: 10.1364/JOSAB.23.001581
D.S. Stoker, J. Baek, W. Wang, D. Kovar, M.F. Becker, J.W. Keto, “Ultrafast Third-harmonic Generation from Textured AlN/Sapphire Interfaces,” Phys. Rev. A., 73 053812 (12 pages) (2006). DOI: 10.1103/PhysRevA.73.053812
J. Baek, D. Kovar, J.W. Keto, and M.F. Becker, “Determination of Properties of Wedged, Rough, and Absorbing Thin Films Using a Novel Numerical Method,” Appl. Opt., 45 [7] pp. 1627-1639 (2006). DOI: 10.1364/AO.45.001627
J. Baek, D. Kovar, J.W. Keto, and M.F. Becker, “A Novel Method for the Determination of Optical Properties of Absorbing Thin Films with Thickness Variations,” Materials Research Society Fall Meeting-Symposium LL: Combinatorial Methods and Informatics in Materials Science, Vol. 894. 0894-LL03-20.1 MRS, Pittsburgh, PA, 2005. DOI: 10.1557/PROC-0894-LL03-20
D. Stoker, J. Baek, M.C. Downer, D. Kovar, M.F. Becker, J.W. Keto, “Interferometric third-harmonic generation in thin optical films using ultra-short laser pulses,” Proceedings of the Frontiers in Optics Conference; Optics Info Database Conference Papers, Tucson, AZ, October 16-21, 2005. DOI: 10.1364/FIO.2005.FME4
G. Malyavanatham, D.T. O'Brien, M.F. Becker, W.T. Nichols, J. W. Keto, D. Kovar, S. Euphrasie, T. Loue and P. Pernod, "Thick Films Fabricated by Laser Ablation of PZT Microparticles," J. Mater. Proc. Tech., 168 [2] pp. 273-279 (2005). DOI: 10.1016/j.jmatprotec.2005.02.255
P.J. Elverum, J.L. Ellzey, and D. Kovar, "Durability of YZA Ceramic Foams in a Porous Burner," J. Mater. Sci. 40 pp. 155-164 (2005). DOI: 10.1007/s10853-005-5701-6
M.F. Becker, J.W. Keto, and D. Kovar, “Nanoscale Manufacturing-Nonlinear Nanocomposites for Magnetostrictive Actuators and Photonic Devices,” 2005 NSF Design, Service and Manufacturing Grantees and Research Conference Proceedings, pp. 1-5, January 3-6, 2005, Scottsdale, AZ.
G. Malyavantham, D.T. O’Brien, M.F. Becker, J.W. Keto, and D. Kovar, "Au-Cu Nanoparticles Produced by Laser Ablation of Mixtures of Au and Cu Microparticles," J. Nanoparticle Res., 6 [6] pp. 661-664 (2004). DOI: 10.1007/s11051-004-3212-z
M.F. Becker, J.W. Keto, and D. Kovar, “Nanoscale Manufacturing-Nonlinear Nanocomposites for Magnetostrictive Actuators and Photonic Devices,” Proceedings of the 2004 NSF Nanoscale Science and Engineering Grantees Conference, pp. 1-3, December 13-15, 2004, Arlington, VA.
J. Wang, E.M. Taleff, and D. Kovar, "Superplastic Deformation of Al2O3/Y-TZP Particulate Composites and Laminates," Acta Mater., 52 [19] pp. 5485-5491 (2004). DOI: 10.1016/j.actamat.2004.08.008
J. Wang, E.M. Taleff, and D. Kovar, "High Temperature Deformation of Al2O3/Y-TZP Particulate Laminates," Acta Mater., 52 [15] pp. 4685-4693 (2004). DOI: 10.1016/j.actamat.2004.06.034
J. Wang, D. Kovar, and E.M. Taleff, “Deformation of Superplastic Al2O3/Y-TZP Particulate Composites and Particulate Laminate Composites” in Advances in Superplasticity and Superplastic Forming, ed. by E.M. Taleff, P.A. Friedman, P.E. Krajewski, R.S. Mishra, and J.G. Schroth, pp. 265-273, TMS, Warrendale, PA, 2004.
J. Ma, D.T. O’Brien, M.F. Becker, J.W. Keto, D. Kovar, “Nanoscale Manufacturing - Nanocomposites for Magnetostrictive Actuators,” 2004 NSF Design, Service and Manufacturing Grantees and Research Conference Proceedings, January 5-8, 2004, Dallas, TX.
D.E. Henneke, G. Malyavanatham, D. Kovar, W.T. Nichols, J.W. Keto, D.T. O'Brien, and M.F. Becker, "Stabilization of Silver Nanoparticles in Nonanoic Acid: A Temperature Activated Conformation Reaction Observed with Surface Enhanced Raman Spectroscopy," J. Chem. Phys., 119 [13] pp. 6802-6809 (2003). DOI: 10.1063/1.1603714
J.W. Keto, W. Nichols, D. O'Brien, M.F. Becker, and D. Kovar, “Nanoparticles: Building Blocks for Nanostructured Materials,” From the Atomic to the Nano-scale, Proceedings of the International Workshop, C. T. Whelan and J. H. McGuire, Eds. (Old Dominion, 2003) pp. 54-62.
J. Wang, E. M. Taleff, and D. Kovar, "High-Temperature Deformation of Al2O3/Y-TZP Particulate Composites, " Acta Mater., 51 [12] pp. 3571-3583 (2003). DOI: 10.1016/S1359-6454(03)00175-7
P.J. Elverum, J.L. Ellzey, and D. Kovar, "Material Performance in a Porous Ceramic Burner," in Proceedings of the Spring Meeting of the Western States Section of the Combustion Institute, La Jolla, California, Paper #02S-9, 2002. http://wssci.us/RecentTitles/wssci2002titles/
A. Hashimoto and D. Kovar, "Controlled Precracking of Fracture Mechanics Specimens Using Localized Contact Stresses," J. Am. Ceram. Soc. 85 [9] pp. 2251-2255 (2002). DOI: 10.1111/j.1151-2916.2002.tb00443.x
M.S. Noel and D. Kovar, "Laser Chemical Vapor Deposition of TiC on Tantalum," J. Mater. Sci. 37 pp. 689-697 (2002). DOI: 10.1023/A:1013871326880
T. Sullivan, J. Wang, D. Kovar, and E.M. Taleff, "Development of Superplastic Al2O3/Y-TZP Duplex Laminates" in Ceramic Transactions Vol 128: Advances in Ceramic-Matrix Composites VII, April 22-25, 2001; pp. 89-100, The American Ceramic Society, Westerville, OH, ed. by N.P. Bansal, J.P. Singh, and H.-T. Lin, 2001. DOI: 10.1002/9781118380925.ch7
P.W. Hall and D. Kovar, "Processing and Fracture Response of Morphologically Textured Alumina"; J. Mater. Proc. Tech., Vol. 117/3 "Special Issue", THERMEC 2000 - Proceedings of the International Conference on Processing and Manufacturing of Advanced Materials. Edited by T. Chandra, K. Higashi, C. Suryanarayana, and C. Tome. Elsevier Science, Las Vegas, NV, 2001.
P.W. Hall, J.S. Swinnea, and D. Kovar, "Fracture Resistance of Highly Textured Alumina," J. Am. Ceram. Soc. 84 [7] pp. 1514-1520, (2001). DOI: 10.1111/j.1151-2916.2001.tb00870.x
S.Y. Lienard, D. Kovar, R.J. Moon, K.J. Bowman and J.W. Halloran, "Texture Development in Si3N4/BN Fibrous Monolithic Ceramics," J. Mater. Sci. 35 pp. 3365-3371 (2000). DOI: 10.1023/A:1004880901978
J.R. Mawdsley, D. Kovar, and J.W. Halloran, "Fracture Behavior of Alumina/Monazite Multilayer Laminates," J. Am. Ceram. Soc., 83 [4] pp. 802-807 (2000). DOI: 10.1111/j.1151-2916.2000.tb01278.x
D. Kovar, S.J. Bennison, and M.J. Readey, "Crack Stability and Strength Variability in Alumina Ceramics with T-Curve Behavior," Acta Mater. 48 pp. 565-578 (2000). DOI: 10.1016/S1359-6454(99)00350-X
D. Kovar and P.W. Hall, "Microstructure and Mechanical Behavior of Textured Alumina," in Proceedings of the 12th International Conference on Textures of Materials, August 9-13, 1999, Montreal, Canada; NRC Research Press. ed. by J.A. Szpunar; pp. 1501-1506 (1999).
D. Kovar, M.D. Thouless, and J.W. Halloran, "Crack Deflection and Propagation in Layered Silicon Nitride/Boron Nitride Ceramics," J. Am. Ceram. Soc. 81 [4] 1004-1012 (1998). DOI: 10.1111/j.1151-2916.1998.tb02438.x
D. Kovar, B.H. King, R.W. Trice, and J.W. Halloran, "Feature Article: Fibrous Monolithic Ceramics," J. Am. Ceram. Soc. 80 [10] pp. 2471-2487 (1997). DOI: 10.1111/j.1151-2916.1997.tb03148.x
D. Kovar and M.D. Thouless, "Simple Method for Measuring Frictional Sliding Resistance and Energy Dissipation in Layered Ceramics," J. Am. Ceram. Soc. 80 [3] pp. 673-679 (1997). DOI: 10.1111/j.1151-2916.1997.tb02883.x
D. Kovar, G.A. Brady, M.D. Thouless, and J.W. Halloran, "Interfacial Fracture Between Boron Nitride and Silicon Nitride and Its Applications to the Failure Behavior of Fibrous Monolithic Ceramics"; pp. 243-248 in Vol. 409, Materials Research Society Fall Meeting-Symposium Q, Instability Dynamics, Scaling, and Ductile/Brittle Behavior. Edited by R.L. Blumberg Selinger, J.J. Mecholsky, A.E. Carlsson, and E.R. Fuller, Jr. Materials Research Society, Pittsburgh, PA, Boston, MA, 1996. DOI: 10.1557/PROC-409-243
D. Kovar and M.J. Readey, "Grain Size Distributions and Strength Variability of High-Purity Alumina," J. Am. Ceram. Soc. 79 [2] 305-312 (1996). DOI: 10.1111/j.1151-2916.1996.tb08121.x
M.J. Readey and D. Kovar, "The Effect of Grain Shape on Strength Variability of Alumina Ceramics"; pp. 459-471 in Vol. 11, Fracture Mechanics of Ceramics. Edited by R.C. Bradt, D.P.H. Hasselman, D. Munz, M. Sakai, and V.Y. Shevchenko. Plenum Press; New York, NY, USA, Karlsruhe, Germany, 1996.
H.L. O'Donnell, D. Kovar, and M.J. Readey "The Effect of Glass Additions on the Indentation Strength Behavior of Alumina," J. Am. Ceram. Soc., 78 [4] 849-856 (1995). DOI: 10.1111/j.1151-2916.1995.tb08405.x
D. Kovar and M.J. Readey, "Role of Grain Size in Strength Variability of Alumina," J. Am. Ceram. Soc. 77 [7] pp. 1928-1938 (1994). DOI: 10.1111/j.1151-2916.1994.tb07073.x