Nenad Velisavljevic joined LLNL in March of 2019 as a staff scientist in the Condensed Matter Physics Section and the Director for High Pressure Collaborative Access Team (HPCAT), NNSA funded high pressure research user facility located within the Advanced Photon Source at Argonne National Laboratory. Nenad is responsible for HPCAT leadership, planning, implementing strategic priorities of the HPCAT Executive Council, and addressing the mission needs of the stakeholders, which consists of LLNL-LANL-SNL, NNSA-Stockpile Stewardship Academic Program University partners, and a large multidisciplinary high-pressure research international user community.

Nenad has a broad range of experience in high-pressure science and leadership roles. Prior to joining LLNL he has served in a range of roles supporting NNSA missions at LANL, including: serving as LANL PI for joint LANL-SNL actinide and other experiments on SNL Z-machine and reporting to the DMP-C2, C1, Global Security, and other program managers; serving as a deputy group leader, team leader, staff member, and post-doctoral fellow, all within the Shock and Detonation Physics Group. Prior to joining LANL, Nenad obtained his Ph.D. in condensed matter physics with focus on high-pressure research with Professor Yogesh K. Vohra at the University of Alabama at Birmingham. Over the course of his career, Nenad has performed experiments at various x-ray user facilities, including HPCAT/APS/ANL, NSLS/BNL, CHESS/Cornell and ECB/Petra-III/DESY, and he has authored numerous publications in the field of high-pressure science.

PhD, Physics, University of Alabama Birmingham, AL, 2006

BS, Physics, Kutztown University, PA, 2000

1. B. Jensen, F. Cherne, and N. Velisavljevic, Dynamic experiments to study the α-ε phase transition in Cerium,  JAP 127, 095901 (2020) - selected as one of the journal's best and chosen by JAP Editors to be promoted as a Featured Article
2. D. Popov, N. Velisavljevic, W. Liu, R. Hrubiak, C. Park, G. Shen, Unexpected grain enlargement in zirconium across the α to ω phase transition under room-temperature compression, Scientific Reports volume 9, Article number: 15712 (2019).
3. M. Jain, N. Velisavljevic, K. Baldwin, M. Knezevic, I. J. Beyerlein, S. Pathak, Structure and Properties of Pseudomorphically Transformed bcc Mg in Mg/Nb Multilayered Nanolaminates studied using Synchrotron X-Ray Diffraction, J. J. Appl. Phys. 126, 025302 (2019)
4. D. Dattelbaum and N. Velisaavljevic (LANL), T. Arsenlis, and D. McNabb (LLNL), (U) Dynamic Plutonium Experiments (DPE): A National Strategy for the National Nuclear Security Administration, Los Alamos Classified Reports LA-CP 18-01048, Submitted to NNSA on behalf of NNSA Multi-Laboratory Team, October, 2018
5. M. Jacobsen, N. Velisavljevic, D. M. Dattelbaum, R. Chellappa, and C. Park, High pressure and temperature equation of state and spectroscopic study of CeO2, J. Phys.: Condens. Matter 28, 155401 (2016) - selected for feature as one of the journal Highlights of 2016
6. M. Jacobsen and N. Velisavljevic, Containment System for Experiments on Radioactive and Other Hazardous Materials in a Paris-Edinburgh Press, RSI. 86, 113904 (2015)
7. M. Bishop, N. Velisavljevic, R. Chellappa, Y. Vohra, The High Pressure-Temperature Phase Diagram of 1,1-diamino-2,2-dinitroethylene (FOX-7), J. Phys. Chem. A Chem. A 119, 9739 (2015)
8. R. Chellappa, D. Dattelbaum, N. Velisavljevic, and S. Sheffield, The Phase Diagram of Ammonium Nitrate, J. Chem. Phys. 137, 064504 (2012)
9. N. Velisavljevic, G. N. Chesnut, L. L. Stevens, and D. M. Dattelbaum, Effects of Interstitial Impurities on the High Pressure Martensitic α to ω Structural Transformation and Grain Growth in Zirconium, J. Phys.: Condens. Matter 23, 125402 (2011)
10. L. L. Stevens, N. Velisavljevic, D. E. Hooks, and D. M. Dattelbaum, Hydrostatic Compression Curve for Triamino-Trinitrobenzene (TATB) Determined to 13.0 GPa with Powder X-Ray Diffraction, Propellants, Explosives, and Pyrotechnics, Vol. 33, Issue 4, 286 (2008)
11. N. Velisavljevic and G. N. Chesnut, Direct hcp→bcc Structural Phase Transition Observed in Titanium Alloy at High Pressure, Appl. Phys. Lett. 91, 101906 (2007)
12. N. Velisavljevic and Y. K. Vohra, Distortion of Alpha Uranium Structure in Praseodymium Metal to 313 GPa, High Pressure Research Vol. 24, No.2, 295 (2004) - selected as one of the 25 most successful articles from the first 25 years of publication, J High-P Research Jubilee Anniversary

(2019) Distinguished Performance Award from Los Alamos National Laboratory

(2019) Award of Excellence from DOE-NNSA Defense Program

(2012 – 2019) Governing Board - Executive Council member for HPCAT

(2009 – 2019) Carnegie/Department of Energy Alliance Center (CDAC) External Steering Committee (ESC) Member 2009 – 2019 and ESC chair 2015 – 2019

(2014) Award of Excellence from DOE-NNSA Defense Programs

(2008) Certificate of Recognition for Exceptional Contribution to Los Alamos National Laboratory Postdoc Association

(2006) Co-founder of Los Alamos Postdoc Association (LANL-LAPA)