Lutz Wiegart

Brookhaven National Laboratory

National Synchrotron Light Source II
Bldg. 744
P.O. Box 5000
Upton, NY 11973-5000

(631) 344-8064
lwiegart@bnl.gov

Research | Education | Appointments | Publications

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. 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

• 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
• Yavitt BM, Wiegart L, Salatto D, Huang Z, Endoh MK, Poeller S, Petrash S, Koga T (2020) Structural Dynamics in UV Curable Resins Resolved by In Situ 3D Printing X-ray Photon Correlation Spectroscopy. ACS Applied Polymer Materials 2:4096–4108. doi: 10.1021/acsapm.0c00716
• Chubar O, Wiegart L, Fluerasu A, Rakitin M, Condie J, Moeller P, Nagler R (2020) Simulations of coherent scattering experiments at storage ring synchrotron radiation sources in the hard x-ray range. Advances in Computational Methods for X-Ray Optics V. doi: 10.1117/12.2568833
• 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
• Rodriguez JA, Xu R, Chen C-C, Huang Z, Jiang H, Chen AL, Raines KS, Pryor Jr A, Nam D, Wiegart L, Song C, Madsen A, Chushkin Y, Zontone F, Bradley PJ, Miao J (2015) Three-dimensional coherent X-ray diffractive imaging of whole frozen-hydrated cells. IUCrJ 2:575–583. doi: 10.1107/s205225251501235x
• Terech P, K. P. Velu S, Pernot P, Wiegart L (2012) Salt Effects in the Formation of Self-Assembled Lithocholate Helical Ribbons and Tubes. The Journal of Physical Chemistry B 116:11344–11355. doi: 10.1021/jp305365m
• Lima E, Wiegart L, Pernot P, Howells M, Timmins J, Zontone F, Madsen A (2009) Cryogenic X-Ray Diffraction Microscopy for Biological Samples. Physical Review Letters. doi: 10.1103/physrevlett.103.198102
• Wiegart L, O'Flaherty SM, Terech P, Struth B (2006) Observation of the desorption of mineralnanoparticles from a hybrid Langmuir monolayer: an in situ grazing incidence X-ray (GIXOS) study. Soft Matter 2:54–56. doi: 10.1039/b512715g
• Wiegart L, Struth B, Tolan M, Terech P (2005) Thermodynamic and Structural Properties of Phospholipid Langmuir Monolayers on Hydrosol Surfaces. Langmuir 21:7349–7357. doi: 10.1021/la050478m