Mehmet Topsakal

Brookhaven National Laboratory

Nuclear Science and Technology Department
Bldg. 817
P.O. Box 5000
Upton, NY 11973-5000

(631) 344-5162
(631) 974-9334
mtopsakal@bnl.gov

Preferred Gender Pronouns (PGPs): he, him, his

Expertise | Education | Publications | Highlights

Expertise

• Operation of synchrotron radiation beamline (28ID2 at NSLS-II) and user support
• X-ray diffraction (XRD),  X-ray Fluorescence (XRF), absorption-contrast & diffraction-contrast computed-tomography (CT)
• Design, installation, and commissioning of advanced scientific equipment
• Experimental and theoretical core-level spectroscopy (XAS, XES, EELS)
• First-principles simulations (VASP, QE, EXCITING, FEFF, OCEAN...)
• Machine learning & data analysis
• High-performance computing
• Code development (Python & MATLAB)

Education

• Ph. D. in Materials Science, Bilkent University, 2012.
• M.S. in Materials Science, Bilkent University, 2008.
• B.S. in Physics, Bogazici University, 2007.

Selected Publications

• Carbone MR, Topsakal M, Lu D, Yoo S (2020) Machine-Learning X-Ray Absorption Spectra to Quantitative Accuracy. Physical Review Letters 124:. https://doi.org/10.1103/physrevlett.124.156401
• Carbone MR, Yoo S, Topsakal M, Lu D (2019) Classification of local chemical environments from x-ray absorption spectra using supervised machine learning. Physical Review Materials 3:. https://doi.org/10.1103/physrevmaterials.3.033604
• Zhang W, Topsakal M, Cama C, et al (2017) Multi-Stage Structural Transformations in Zero-Strain Lithium Titanate Unveiled by in Situ X-ray Absorption Fingerprints. Journal of the American Chemical Society 139:16591–16603. https://doi.org/10.1021/jacs.7b07628
• Yan D, Topsakal M, Selcuk S, et al (2019) Ultrathin Amorphous Titania on Nanowires: Optimization of Conformal Growth and Elucidation of Atomic-Scale Motifs. Nano Letters 19:3457–3463. https://doi.org/10.1021/acs.nanolett.8b04888
• Singh H, Topsakal M, Attenkofer K, et al (2018) Identification of dopant site and its effect on electrochemical activity in Mn-doped lithium titanate. Physical Review Materials 2:. https://doi.org/10.1103/physrevmaterials.2.125403
• Topsakal M, Wentzcovitch RM (2014) Accurate projected augmented wave (PAW) datasets for rare-earth elements (RE=La–Lu). Computational Materials Science 95:263–270. https://doi.org/10.1016/j.commatsci.2014.07.030
• Cahangirov S, Topsakal M, Aktürk E, et al (2009) Two- and One-Dimensional Honeycomb Structures of Silicon and Germanium. Physical Review Letters 102:. https://doi.org/10.1103/physrevlett.102.236804

Research Highlights

• https://www.bnl.gov/newsroom/news.php?a=219269
• https://cse.umn.edu/college/news/conductive-nature-crystal-structures-revealed-magnification-10-million-times 
• https://www.bnl.gov/newsroom/news.php?a=217215 
• https://www.bnl.gov/newsroom/news.php?a=215605 
• https://www.bnl.gov/newsroom/news.php?a=115559
• https://www.bnl.gov/nsls2/news/highlights/news.php?a=218800 
• https://www.bnl.gov/newsroom/news.php?a=117060