Andrei Fluerasu
CHX Lead Beamline Scientist, Complex scattering, National Synchrotron Light Source II

Brookhaven National Laboratory
National Synchrotron Light Source II
Bldg. 744
P.O. Box 5000
Upton, NY 11973-5000
(631) 344-4645
(631) 569-0008
fluerasu@bnl.gov
I am a Physicist at Brookhaven National Laboratory and Lead Beamline Scientist of the Coherent X-ray Scattering group in the Photon Sciences Directorate (NSLS-II). My research interest focus on novel applications of X-ray scattering methods. I have 20+ yer experience in developing coherent X-ray scattering methods, to study "mesoscale" dynamics of materials. More recently I have become interested in "quantum scattering" applications of bright Synchrotron beams where we create pairs of correlated photons to extract the maximum information from a scattering or imaging experiment while minimizing beam-induced artifacts.
Expertise | Education | Appointments | Publications | Highlights
Expertise
X-ray Scattering; Coherent X-ray Scattering; X-ray Photon Corrlation Spectroscopy
Spontaneous Parametric Down Conversion; Ghost Imaging;
Dynamics of Materials; Colloids; Microrheology; Microfluidics
Education
Ph.D. Physics, McGill University, Montreal Canada, 2003
M.Sc. Applied Physics, NJIT/Rutgers, 1996
B.Sc. Physics, University of Bucharest, 1994
Professional Appointments
Lead Beamline Scientist, NSLS-II, BNL 2009 - present
Beamline Scientist, ESRF, 2007 - 2009
Post-doctoral Researcher, ESRF, 2003-2007
Research Staff, Syprotech Inc. Montreal, Canada 1996-1998
Analysist Programmer, Val Infonet S.R.L., Bucharest, Romania, 1994-1995
Selected Publications
- Liu R, Gura A, Sauyet T, et al (2025) Dynamics of Thermally Driven Domain Transformation in Ferroelectric Thin Films. Physical Review Letters 134:. https://doi.org/10.1103/physrevlett.134.056801
- Tian J, Motezakker AR, Wang R, et al (2025) Probing the Self-Assembly dynamics of cellulose nanocrystals by X-ray photon correlation spectroscopy. Journal of Colloid and Interface Science 683:1077–1086. https://doi.org/10.1016/j.jcis.2024.12.234
- Goodrich JC, Mahon R, Hanrahan J, et al (2024) Quantum Imaging with X-rays
- Porter Z, Shen L, Plumley R, et al (2024) Understanding the superconductivity and charge density wave interaction through quasi-static lattice fluctuations. Proceedings of the National Academy of Sciences 121:. https://doi.org/10.1073/pnas.2412182121
- Hurley MJ, Tanner CPN, Portner J, et al (2024) In situ coherent x-ray scattering reveals polycrystalline structure and discrete annealing events in strongly coupled nanocrystal superlattices. Physical Review Research 6:. https://doi.org/10.1103/physrevresearch.6.023119
- 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
- Myint P, Ludwig KF, Wiegart L, et al (2021) de Gennes Narrowing and Relationship between Structure and Dynamics in Self-Organized Ion-Beam Nanopatterning. Physical Review Letters 126:. https://doi.org/10.1103/physrevlett.126.016101
- Hill J, Campbell S, Carini G, et al (2020) Future trends in synchrotron science at NSLS-II. Journal of Physics: Condensed Matter 32:374008. https://doi.org/10.1088/1361-648x/ab7b19
- Madsen A, Fluerasu A, Ruta B (2020) Structural Dynamics of Materials Probed by X-Ray Photon Correlation Spectroscopy. Synchrotron Light Sources and Free-Electron Lasers 1989–2018. https://doi.org/10.1007/978-3-030-23201-6_29
- Headrick RL, Ulbrandt JG, Myint P, et al (2019) Coherent X-ray measurement of step-flow propagation during growth on polycrystalline thin film surfaces. Nature Communications 10:. https://doi.org/10.1038/s41467-019-10629-8
- Nogales A, Fluerasu A (2016) X Ray Photon Correlation Spectroscopy for the study of polymer dynamics. European Polymer Journal 81:494–504. https://doi.org/10.1016/j.eurpolymj.2016.03.032
- Li L, Kwasniewski P, Orsi D, et al (2014) Photon statistics and speckle visibility spectroscopy with partially coherent X-rays. Journal of Synchrotron Radiation 21:1288–1295. https://doi.org/10.1107/s1600577514015847
- Kwasniewski P, Fluerasu A, Madsen A (2014) Anomalous dynamics at the hard-sphere glass transition. Soft Matter 10:8698–8704. https://doi.org/10.1039/c4sm01671h
- Orsi D, Fluerasu A, Moussaïd A, et al (2012) Dynamics in dense hard-sphere colloidal suspensions. Physical Review E 85:. https://doi.org/10.1103/physreve.85.011402
- Fluerasu A, Kwasniewski P, Caronna C, et al (2010) Dynamics and rheology under continuous shear flow studied by x-ray photon correlation spectroscopy. New Journal of Physics 12:035023. https://doi.org/10.1088/1367-2630/12/3/035023
- Fluerasu A, Moussaïd A, Madsen A, Schofield A (2007) Slow dynamics and aging in colloidal gels studied by x-ray photon correlation spectroscopy. Physical Review E 76:. https://doi.org/10.1103/physreve.76.010401
- Fluerasu A, Sutton M, Dufresne EM (2005) X-Ray Intensity Fluctuation Spectroscopy Studies on Phase-Ordering Systems. Physical Review Letters 94:. https://doi.org/10.1103/physrevlett.94.055501
Research Highlights
Slow Atomic Movements Shed New Light on Unconventional Superconductivity (Dec. 2024)
Quantum X-ray Microscope Underway at Brookhaven Lab (Nov. 2020)
Creating 'Movies' of Thin Film Growth at NSLS-II (July 2019)
CHX Beamline Taking Shape at NSLS-II (Nov. 2013)

Brookhaven National Laboratory
National Synchrotron Light Source II
Bldg. 744
P.O. Box 5000
Upton, NY 11973-5000
(631) 344-4645
(631) 569-0008
fluerasu@bnl.gov