Lutz Wiegart
CHX Beamline Scientist, Complex Scattering Program, National Synchrotron Light Source II
Brookhaven National Laboratory
National Synchrotron Light Source II
Bldg. 744
P.O. Box 5000
Upton, NY 11973-5000
(631) 344-8064
lwiegart@bnl.gov
Lutz is a beamline scientist at the Coherent Hard X-ray (CHX) scattering beamline at the National Synchrotron Light Source II. The CHX beamline is optimized for coherent scattering experiments like X-ray Photon Correlation Spectroscopy (XPCS) in (GI)SAXS/(GI)WAXS geometries for studies of structure and dynamics in soft and hard condensed matter.
Research | Education | Appointments | Publications | Highlights | Video
Research Activities
Lutz has been applying coherent and incoherent scattering techniques to study structure and dynamics in the bulk and at the interface of soft condensed matter systems. He is developing experimental capabilities for in-situ/operando studies of structure and dynamics in polymer nanocomposites under out-of-equilibrium conditions during processing and application conditions. Studies include the temporal and spatial heterogeneous material evolution during advanced manufacturing (AM) processes like 3D printing, interaction of polymer nanocomposites with interfaces and kinetics of polymer crosslinking processes. He is also collaborating on the development of simulation methods for partially coherent X-ray scattering experiments.
Education
- Ph.D. 2007: Physics, Université Joseph Fourier (Grenoble, France)
- Diploma 2004: Physics, University of Dortmund (Germany)
Professional Appointments
2013 – Present: Physicist, National Synchrotron Light Source II, Brookhaven National Laboratory (BNL)
2011 – 2013: Associate Physicist, National Synchrotron Light Source II, BNL
2009 – 2011: Assistant Physicist, National Synchrotron Light Source II, BNL
2007 – 2009: Postdoctoral Fellow, European Synchrotron Radiation Facility (ESRF), France
Selected Publications
- Myint P, Woodward JM, Wang C, et al (2024) Coherent X-ray Spectroscopy Elucidates Nanoscale Dynamics of Plasma-Enhanced Thin-Film Growth. ACS Nano 18:1982–1994. https://doi.org/10.1021/acsnano.3c07619
- Goel H, Chubar O, Li R, et al (2024) Efficient end-to-end simulation of time-dependent coherent X-ray scattering experiments. Journal of Synchrotron Radiation 31:517–526. https://doi.org/10.1107/s1600577524001267
- Yavitt BM, Wiegart L, Salatto D, et al (2023) Spatial-Temporal Dynamics at the Interface of 3D-Printed Photocurable Thermoset Resin Layers. ACS Applied Engineering Materials 1:868–876. https://doi.org/10.1021/acsaenm.2c00248
- Yavitt BM, Salatto D, Zhou Y, et al (2021) Collective Nanoparticle Dynamics Associated with Bridging Network Formation in Model Polymer Nanocomposites. ACS Nano 15:11501–11513. https://doi.org/10.1021/acsnano.1c01283
- Konstantinova T, Wiegart L, Rakitin M, et al (2022) Machine Learning for analysis of speckle dynamics: quantification and outlier detection. Physical Review Research 4:. https://doi.org/10.1103/physrevresearch.4.033228
- Lin C-H, Dyro K, Chen O, et al (2021) Revealing meso-structure dynamics in additive manufacturing of energy storage via operando coherent X-ray scattering. Applied Materials Today 24:101075. https://doi.org/10.1016/j.apmt.2021.101075
- Torres Arango MA, Zhang Y, Li R, Doerk G, Fluerasu A, Wiegart L (2020) In-Operando Study of Shape Retention and Microstructure Development in a Hydrolyzing Sol–Gel Ink during 3D-Printing. ACS Applied Materials & Interfaces 12:51044–51056. doi: 10.1021/acsami.0c14743
- Torres Arango M, Zhang Y, Zhao C, Li R, Doerk G, Nykypanchuk D, Chen-Wiegart YK, Fluerasu A, Wiegart L (2020) Ink-substrate interactions during 3D printing revealed by time-resolved coherent X-ray scattering. Materials Today Physics 14:100220. doi: 10.1016/j.mtphys.2020.100220
- Johnson KJ, Wiegart L, Abbott AC, Johnson EB, Baur JW, Koerner H (2019) In Operando Monitoring of Dynamic Recovery in 3D-Printed Thermoset Nanocomposites by XPCS. Langmuir 35:8758–8768. doi: 10.1021/acs.langmuir.9b00766
- Headrick RL, Ulbrandt JG, Myint P, Wan J, Li Y, Fluerasu A, Zhang Y, Wiegart L, Ludwig KF (2019) Coherent X-ray measurement of step-flow propagation during growth on polycrystalline thin film surfaces. Nature Communications. doi: 10.1038/s41467-019-10629-8
Research Highlights
Insights into Preceramic Polymer-Based Inks for 3D Printing https://www.bnl.gov/newsroom/news.php?a=222286
Seeing the Forest Through the Trees: Brookhaven Lab Scientists Develop New Computational Approach to Reduce Noise in X-ray Data https://www.bnl.gov/newsroom/news.php?a=219533
Building Bridges for Reinforcing Polymers https://www.bnl.gov/newsroom/news.php?a=219272
Unraveling 3D Printing Dynamics https://www.bnl.gov/newsroom/news.php?a=218794
Optimizing the NSLS-II Beam Parameters https://www.bnl.gov/newsroom/news.php?a=218947
Creating 'Speckle Pattern' Movies of Thin Film Growth https://www.bnl.gov/newsroom/news.php?a=216725
AFRL Looks to Fine Tune Process of 3D Printing Composite Inks https://www.bnl.gov/newsroom/news.php?a=216759
Featured Video
Staying in Shape and Connected with 3D Printing
February 12, 2024
Lutz Wiegart, a physicist at Brookhaven Lab, describes how modern 3D printing can be used to make life-changing products, from heart valves to houses. In this installment of NSLS-II Science Shorts, learn how scientists can watch and improve additive manufacturing—the process by which many objects are 3D printed—in real time using synchrotron x-ray beams.
How modern 3D printing can be used to make life-changing products, from heart valves to houses. In this installment of NSLS-II Science Shorts, learn how scientists can watch and improve additive manufacturing—the process by which many objects are 3D printed—in real time using synchrotron x-ray beams.
Brookhaven National Laboratory
National Synchrotron Light Source II
Bldg. 744
P.O. Box 5000
Upton, NY 11973-5000
(631) 344-8064
lwiegart@bnl.gov
