BNL Home
October 2018
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1

There are no conferences scheduled at this time.

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2

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3

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4

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5

There are no conferences scheduled at this time.

  1. NSLS-II Friday Seminar

    12 pm, NSLS-II Bldg. 743 Rm 156

    Hosted by: Ignace Jarrige

    Light olefins production utilizes the energy intensive process of steam cracking. Fischer-Tropsch to olefins (FTO) synthesis potentially offers a more sustainable alternative. Here we show a promising FTO catalyst comprised of iron oxide nanoparticles supported on carbon nanosheets (CNS) fabricated from the carbonization of potassium citrate, which incorporates well dispersed K-promoter throughout the CNS support. This catalyst exhibits, to the best of our knowledge, the highest iron time yield of 1790–1990 μmolCO/gFe•s reported in the literature, 41% light olefins selectivity, and over 100 hours stable activity, making it one of the best performing FTO catalysts. Detailed characterization, including synchrotron X-ray spectroscopy, illustrates that the CNS support facilitates iron oxide reduction to metallic iron, leading to efficient transformation to the active iron carbide phase during FTO reaction. Since K is a commonly used promoter, our K-promoted CNS support potentially has broad utility beyond the FTO reactions demonstrated in the current study.

6

There are no conferences scheduled at this time.

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7

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8

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9

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10

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11

There are no conferences scheduled at this time.

  1. NSLS-II Colloquium Series

    4 pm, Large Seminar Room, Bldg. 510

    Hosted by: John Hill

    Nudaurelia Capensis ? Virus (N?V) is a eukaryotic, quasi-equivalent, RNA virus, with a T=4 surface lattice, where maturation is dramatic (a change in particle size of 100Å) and is novel in that it can be investigated in vitro. Here we use X-ray crystallography, biochemistry, Small Angle X-ray Scattering, and electron cryo-microscopy and image reconstruction (CryoEM), to characterize maturation intermediates, an associated auto-catalytic cleavage, the kinetics of morphological change and to demonstrate that regions of N?V subunit folding are maturation-dependent and occur at rates determined by their quasi-equivalent position in the capsid. Matsui, T., Lander, G. C., Khayat, R., and Johnson, J. E. 2010. Subunits fold at position-dependent rates during maturation of a eukaryotic RNA virus. Proc Natl Acad Sci U S A 107:14111-5. Veesler, D., and Johnson, J.E. 2012. Virus Maturation. Annual review of biophysics 41:473-496. Doerschuk, P. C., Gong, Y., Xu, N., Domitrovic, T., and Johnson, J. E. 2016. Virus particle dynamics derived from CryoEM studies. Curr Opin Virol 18:57-63.

12

There are no conferences scheduled at this time.

  1. NSLS-II Friday Seminar Series

    12 pm, NSLS-II Bldg. 743 Rm 156

    Hosted by: Ignace Jarrige

    Nickel-rich lithium transition metal oxides have been recently considered as one of most promising cathode materials for high energy density lithium-ion batteries. However, the instability of the cathode electrolyte interface has been the major technological barrier for the development of nickel-rich cathodes. The early research has simply assigned this interfacial instability to the electrochemical oxidation of the commonly used carbonate solvents without much discussion on the nature of the parasitic reactions. A proprietary high precision electrochemical system was built in-house to quantitatively measure the rate and kinetics of the side reactions between the delithiated cathode and the non-aqueous electrolyte. Our results clearly indicated the dominant chemical reaction within the working potential window is the chemical, not electrochemical, reaction between the intermediate phase of cathode and the electrolyte, generating locally concentrated protons at the surface of the cathode materials. Figure 1 shows a generic mechanism of parasitic reactions occurring at the interface of cathode materials. Additional help from advanced characterization tools, such as synchrotron probes, will be also be discussed.

13

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14

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15

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16

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17

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18

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19

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  1. OCT

    19

    Today

    NSLS-II Friday Lunchtime Seminar

    12 pm, NSLS-II Bldg. 743 Rm 156

    Friday, October 19, 2018, 12:00 pm

    Hosted by: Ignace Jarrige

    Different from the simple one-band Hubbard model prediction, it has been recognized that the cuprate superconductors are electron-hole asymmetric. Recent RIXS work on the electron-doped Nd2-xCexCuO4 by K. Ishii et al. [1] and W. S. Lee et al. [2] reported a hardening of the spin excitations and the emergence of a charge excitation mode. Both these observations are in distinct contrast to that reported on the hole doped side, and brought attention again to the profound electron-hole asymmetry issue in the cuprates. Taking the advantage of a La2-xCexCuO4 combi-film, namely a film with large range doping gradient distribution, we studied the evolution of the charge and magnetic excitations from optimal- to over-doping systematically in fine steps. Our results establish the universality of the previous observation for the electron-doped cuprates. And more importantly, the doping dependent evolutions show that the magnetic and charge excitations are not the two faces of a coin. Rather, the spin-correlation roots in the short range correlation, and the charge-fluctuation stems from long range Coulomb interaction. [1] K. Ishii et al, Nat. Commun. 5, 3714 (2014). [2] W. S. Lee et al, Nat. Phys. 10, 883 (2014).

20

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21

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22

  1. OCT

    22

    Monday

    NOBUGS 2018: New Opportunities for Better User Group Software

    October 22-26, 2018

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23

  1. OCT

    22

    Monday

    NOBUGS 2018: New Opportunities for Better User Group Software

    October 22-26, 2018

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24

  1. OCT

    22

    Monday

    NOBUGS 2018: New Opportunities for Better User Group Software

    October 22-26, 2018

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25

  1. OCT

    22

    Monday

    NOBUGS 2018: New Opportunities for Better User Group Software

    October 22-26, 2018

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26

  1. OCT

    22

    Monday

    NOBUGS 2018: New Opportunities for Better User Group Software

    October 22-26, 2018

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27

There are no conferences scheduled at this time.

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28

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29

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30

There are no conferences scheduled at this time.

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31

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  1. OCT

    19

    Today

    NSLS-II Friday Lunchtime Seminar

    "RIXS study of the charge and magnetic evolution in La2-xCexCuO4 combi-film"

    Presented by Xuerong Liu, Shanghai Tech University, China

    12 pm, NSLS-II Bldg. 743 Rm 156

    Friday, October 19, 2018, 12:00 pm

    Hosted by: Ignace Jarrige

    Different from the simple one-band Hubbard model prediction, it has been recognized that the cuprate superconductors are electron-hole asymmetric. Recent RIXS work on the electron-doped Nd2-xCexCuO4 by K. Ishii et al. [1] and W. S. Lee et al. [2] reported a hardening of the spin excitations and the emergence of a charge excitation mode. Both these observations are in distinct contrast to that reported on the hole doped side, and brought attention again to the profound electron-hole asymmetry issue in the cuprates. Taking the advantage of a La2-xCexCuO4 combi-film, namely a film with large range doping gradient distribution, we studied the evolution of the charge and magnetic excitations from optimal- to over-doping systematically in fine steps. Our results establish the universality of the previous observation for the electron-doped cuprates. And more importantly, the doping dependent evolutions show that the magnetic and charge excitations are not the two faces of a coin. Rather, the spin-correlation roots in the short range correlation, and the charge-fluctuation stems from long range Coulomb interaction. [1] K. Ishii et al, Nat. Commun. 5, 3714 (2014). [2] W. S. Lee et al, Nat. Phys. 10, 883 (2014).

  2. DEC

    13

    Thursday

    NSLS-II Colloquium Series

    "pending"

    Presented by Prof. Robert Cava, Princeton University, NJ

    4 pm, Hamilton Seminar Room, Bldg. 555

    Thursday, December 13, 2018, 4:00 pm

    Hosted by: John Hill

  1. NSLS-II Friday Seminar Series

    "Chasing Protons in Lithium Batteries"

    Presented by Zonghai Chen, Argonne National Laboratory

    Friday, October 12, 2018, 12 pm
    NSLS-II Bldg. 743 Rm 156

    Hosted by: Ignace Jarrige

    Nickel-rich lithium transition metal oxides have been recently considered as one of most promising cathode materials for high energy density lithium-ion batteries. However, the instability of the cathode electrolyte interface has been the major technological barrier for the development of nickel-rich cathodes. The early research has simply assigned this interfacial instability to the electrochemical oxidation of the commonly used carbonate solvents without much discussion on the nature of the parasitic reactions. A proprietary high precision electrochemical system was built in-house to quantitatively measure the rate and kinetics of the side reactions between the delithiated cathode and the non-aqueous electrolyte. Our results clearly indicated the dominant chemical reaction within the working potential window is the chemical, not electrochemical, reaction between the intermediate phase of cathode and the electrolyte, generating locally concentrated protons at the surface of the cathode materials. Figure 1 shows a generic mechanism of parasitic reactions occurring at the interface of cathode materials. Additional help from advanced characterization tools, such as synchrotron probes, will be also be discussed.

  2. NSLS-II Colloquium Series

    "Biophysical Studies of an RNA Virus particle and its Maturation: Insights into an Elegantly Programmed Nano-machine"

    Presented by John E. (Jack) Johnson, Department of Integrative Structural and Computational Biology, The Scripps Research Institute

    Thursday, October 11, 2018, 4 pm
    Large Seminar Room, Bldg. 510

    Hosted by: John Hill

    Nudaurelia Capensis ? Virus (N?V) is a eukaryotic, quasi-equivalent, RNA virus, with a T=4 surface lattice, where maturation is dramatic (a change in particle size of 100Å) and is novel in that it can be investigated in vitro. Here we use X-ray crystallography, biochemistry, Small Angle X-ray Scattering, and electron cryo-microscopy and image reconstruction (CryoEM), to characterize maturation intermediates, an associated auto-catalytic cleavage, the kinetics of morphological change and to demonstrate that regions of N?V subunit folding are maturation-dependent and occur at rates determined by their quasi-equivalent position in the capsid. Matsui, T., Lander, G. C., Khayat, R., and Johnson, J. E. 2010. Subunits fold at position-dependent rates during maturation of a eukaryotic RNA virus. Proc Natl Acad Sci U S A 107:14111-5. Veesler, D., and Johnson, J.E. 2012. Virus Maturation. Annual review of biophysics 41:473-496. Doerschuk, P. C., Gong, Y., Xu, N., Domitrovic, T., and Johnson, J. E. 2016. Virus particle dynamics derived from CryoEM studies. Curr Opin Virol 18:57-63.

  3. NSLS-II Friday Seminar

    "Highly Active and Stable Carbon Nanosheets Supported Iron Oxide for Fischer-Tropsch to Olefins Synthesis"

    Presented by Congjun Wang, National Energy Technology Laboratory, Pittsburgh, PA

    Friday, October 5, 2018, 12 pm
    NSLS-II Bldg. 743 Rm 156

    Hosted by: Ignace Jarrige

    Light olefins production utilizes the energy intensive process of steam cracking. Fischer-Tropsch to olefins (FTO) synthesis potentially offers a more sustainable alternative. Here we show a promising FTO catalyst comprised of iron oxide nanoparticles supported on carbon nanosheets (CNS) fabricated from the carbonization of potassium citrate, which incorporates well dispersed K-promoter throughout the CNS support. This catalyst exhibits, to the best of our knowledge, the highest iron time yield of 1790–1990 μmolCO/gFe•s reported in the literature, 41% light olefins selectivity, and over 100 hours stable activity, making it one of the best performing FTO catalysts. Detailed characterization, including synchrotron X-ray spectroscopy, illustrates that the CNS support facilitates iron oxide reduction to metallic iron, leading to efficient transformation to the active iron carbide phase during FTO reaction. Since K is a commonly used promoter, our K-promoted CNS support potentially has broad utility beyond the FTO reactions demonstrated in the current study.

  4. NSLS-II Friday Lunchtime Seminar

    "Shape-Symmetry Incommensurate Polymer Crystals Directed by Liquid-liquid Interface"

    Presented by Prof. Christopher Li, Department of Materials Science and Engineering, Drexel University

    Friday, September 28, 2018, 12 pm
    NSLS-II Bldg. 743 Rm 156

    Hosted by: Ignace Jarrige

    Crystallization is ubiquitous in nature and semicrystalline polymers are of crucial importance in our daily life. Compared with small molecules, polymers crystallize via a more complex pathway because of their long chain nature and various metastable states associated with polymer crystals. In this talk, I will show that this complex conformational change of polymer chains upon crystallization can be employed to design and fabricate functional nanomaterials. We will focus on crystallization directed by liquid/liquid interface. Not only can this type of dynamic interface direct the crystallization pathway, it can also alter chain packing in the final crystals, leading to intriguing macroscopic properties. In particular, curved interface, which is incommensurate with the classical translation symmetry, frustrates chain packing, and induced defect formation, a topic that will be discussed in the context of recently reported spherical crystallography.

  5. NSLS-II Friday Luncheon Seminar

    "X-ray sparse-angle Bragg ptychography"

    Presented by Dr. Peng Li, Institut Fresnel (CNRS), Marseille, France

    Friday, September 21, 2018, 12:30 pm
    NSLS-II Bldg. 743 Rm 156

    Hosted by: Ignace Jarrige

    X-ray Bragg ptychography is a scanning coherent diffraction imaging microscopy technique that can produce 3D maps of the crystalline structure of an extended nanostructured crystal at about 10nm resolution. With sparse-angle Bragg ptychography, the 3D maps can be extracted from an extremely undersampled data-set. This new strategy substantially reduces the acquisition time and mitigates problems, linked to radiation damage and instabilities, faced by conventional Bragg ptychography. However, the success of the image reconstruction is based on a good knowledge of the probe, whose uncertainties degrade the object reconstruction. In this talk, we solve this problem by proposing a simultaneous reconstruction of the probe and object functions. This is based on a strong but natural constraint of the probe properties. We demonstrate our approach on a He-implanted poly-crystalline Tungsten sample measured at ID01-ESRF. These findings open new possibilities for this imaging technique.

  6. NSLS-II Seminar

    "X-ray spectroscopy of transition metal oxides"

    Presented by Frank de Groot, Utrecht University, Netherlands

    Thursday, August 23, 2018, 11 am
    NSLS-II Building 744 Room 156

    Hosted by: Lisa Miller

    Some new developments in x-ray absorption (XAS) and resonant inelastic x-ray scattering (RIXS) will be discussed. An introduction is given of XAS, including the oxygen K edge, metal K edge and metal L edge [1,2]. The main part of the talk deals with resonant inelastic x-ray scattering (RIXS) In 2p3d RIXS one scans through the 2p XAS edge and measures the low energy excitations, including phonons, magnons, dd-excitations and charge transfer. The 100 meV resolved 2p3d RIXS spectra of ruby (Cr3+ in Al2O3), Fe3O4 and LaCoO3 will be discussed [3,4]. The present experimental resolution of 30 to 100 meV allows the detailed observation of the electronic structure, including the determination of crystal field parameters, covalency parameters and spin-orbit coupling, but also the momentum dependence of magnons and other low energy excitations. Related to the RIXS measurements is the analysis of Fluorescence yield (FY) detected x-ray absorption spectra (XAS), including the intrinsic deviations of FY-XAS spectral shape from the XAS spectrum that is important for measurements with x-ray free electron lasers [5,6]. [1] Core Level Spectroscopy of Solids Frank de Groot and Akio Kotani (Taylor & Francis CRC press, 2008) [2] Download the x-ray spectroscopy simulation software at http://www.anorg.chem.uu.nl/CTM4XAS/ [3] Huang et al. Nature Comm. 8, 15929 (2017). [4] Tomiyasu et al. Phys. Rev. Lett. 119, 196402 (2017) [5] F.M.F. de Groot, Nature Chemistry 4, 766 (2012) [6] Mitzner et al. J. Phys. Chem. Lett. 4, 3641 (2013)

  7. NSLS-II Colloquium Series

    "Mulling over Nanoemulsions: Interfacial Molecular Structure, Stabilization and Assembly"

    Presented by Prof. Geraldine (Geri) Richmond, University of Oregon

    Thursday, August 9, 2018, 4 pm
    Large Seminar Room, Bldg. 510

    Hosted by: John Hill

    Nanoemlusions are finding numerous applications in the fields of pharmaceuticals, food production, materials synthesis and cosmetics. With the search for broader and improved usage of these unique droplets comes the need to better understand the molecular interactions at the surface that lead to their stabilization. This presentation will focus on our most recent efforts in measuring the molecular structure of the oil-water interface and the unique environment it provides for adsorption of molecules, surfactants and macromolecules at both planar and nanoemulsion oil/water interfaces. The studies are a combination of spectroscopic and thermodynamic measurements coupled with theoretical simulations.

  8. NSLS-II Friday Luncheon Seminar

    "Homoepitaxial growth of SrTiO3 by Pulsed Laser Deposition: energetic vs thermal growth"

    Presented by Jeff Ulbrandt, University of Vermont

    Friday, August 3, 2018, 12 pm
    NSLS-II Bldg. 743 Room 156

    Hosted by: M. Abeykoon, S. Chodankar, B. Ocko, T. Tanabe, J. Thieme

  9. Summer Sundays

    "Brilliant Light, Dazzling Discoveries - National Synchrotron Light Source II"

    Sunday, July 29, 2018, 10 am
    Berkner Hall, Room B

  10. NSLS-II Friday Lunchtime Seminar

    "Manipulating sound propagation beyond the hypersonic range: recent IXS results"

    Presented by Alessandro Cunsolo, NSLS-II / BNL

    Friday, July 13, 2018, 12 pm
    NSLS-II

    Hosted by: M. Abeykoon, S. Chodankar, B. Ocko, J. Thieme, G. Wang

  11. NSLS-II Friday Lunchtime Series

    "Investigating slow kinetic processes using synchrotron radiation: A case study of cement hydration in nuclear waste cements"

    Presented by Claire L. Corkhill, University of Sheffield, United Kingdom

    Friday, June 29, 2018, 12 pm
    NSLS-II Bldg. 743 Room 156

    Hosted by: M. Abeykoon, S. Chodankar, B. Ocko, J. Thieme, G. Wang

  12. NSLS-II Friday Luncheon Series

    "The Helmholtz Imaging Platform (HIP): Imaging Sciences in Germany"

    Presented by Alexander Pichler, DESY Hamburg, Germany

    Friday, June 22, 2018, 12 pm
    NSLS-II Bldg. 743 Room 156

    Hosted by: M. Abeykoon, S. Chodankar, B. Ocko, T. Tanabe, J. Thieme

  13. NSLS-II Seminar

    "Understanding microstructure evolution in lithium battery electrodes through coupled modeling and experiments"

    Presented by Ming Tang, Dept of Materials Science & NanoEngineering, Rice University, Houston, TZ

    Monday, May 7, 2018, 11 am
    NSLS-II Bldg. 744 Room 156

    Hosted by: Yong Chu & Jun Wang

    Like most materials, there exist very rich microstructure evolution phenomena in lithium battery electrode compounds during battery operation. Elucidating such phenomena through combined modeling and characterization including synchrotron-based techniques could yield valuable insights on how electrode structure should be designed and tailored at the mesoscale to enable stepwise improvement in battery performance. In this talk, I will first present our recent study on the unique aspects of phase transformation kinetics in Li-ion battery electrodes, using LiFePO4 as a model system. Through combined phase-field modeling and transmission x-ray microscopic observation of Li deintercalation process in LiFePO4 microrods, we discovered that intercalation-induced phase transformations can proceed in several distinct kinetic modes with varied electrochemical conditions and particle geometry. In particular, a hybrid mode, in which phase growth is surface-reaction-limited or bulk-diffusion-limited along different directions, is revealed for the first time. In the surface-reaction-limited transformation regime, we predict a surprising effect of antisite defects on accelerating phase boundary migration velocity by two orders of magnitude over defect-free LiFePO4 due to defect-induced increase in the surface reaction area. This finding suggests defect engineering as a fruitful approach to enhance the rate performance of intercalation compounds. The second part of this talk concerns the fundamental mechanism of dendrite growth on Li metal surface during electroplating, which presents a major challenge to the adoption of Li metal anodes in rechargeable batteries. Combining Li electroplating experiments and modeling, we obtained a key insight that Li dendrite growth is a stress-driven process, which is initiated by the compressive residual stress developed in deposited Li during battery cycling. Accordingly, elimination of the plating stress, e.g. via the use of soft substrate for Li

  14. Brookhaven Women In Science Speaker

    "The Exciting World of Molecules: An Image From Within Using Light Sources and Free Electron Lasers"

    Nora Berrah, University of Connecticut

    Thursday, April 26, 2018, 4 pm
    Large Seminar Room, Bldg. 510

    Professor Berrah, chair of the University of Connecticut Physics Department, will take us on a fascinating voyage through the molecular world. All that surrounds us is ultimately made of atoms and molecules; these materials are not static—they are dynamic and move. Berrah uses x-rays from light sources and free electron lasers (FELs) to study how they move, why they move, and what it means to us. During her talk, she will share her recent studies on fullerenes, a molecule that may be used for drug delivery systems to the body, in lubricants, and as catalysts. Nora is the recipient of numerous awards. She recently received the Davisson-Germer Prize from the American Physical Society. Nora is also an active member of COACh, an organization that is working to increase the number of women scientists and engineers, and the success of their careers, through innovative programs and strategies. Coffee and cookies will be available at 3:30 p.m.

  15. NSLS-II Friday Luncheon Seminar

    "Macromolecular Interactions in Polymer-based Complex Fluids"

    Presented by Sudipta Gupta, Louisiana Consortium for Neutron Scattering, Department of Chemistry, Louisiana State Univ, Baton Rouge, LA

    Friday, April 20, 2018, 12 pm
    NSLS-II Bldg. 743 Rm 156

    Hosted by: M. Abeykoon, S. Chodankar, B. Ocko, T. Tanabe, J. Thieme

  16. NSLS-II Friday Lunchtime Seminar

    "Interactive Ray-Tracing in XRT Code"

    Presented by Roman Chernikov, Canadian Light Source

    Friday, April 13, 2018, 12 pm
    NSLS-II Bldg. 743 Room 156

    Hosted by: M. Abeykoon, S. Chodankar, B. Ocko, T. Tanabe, J. Thieme

  17. NSLS-II Friday Lunchtme Seminar Series

    "SMI Beamline Status Update"

    Presented by Mikhail Zhernenkov, NSLS-II

    Friday, April 13, 2018, 12 pm
    NSLS-II Building 743 Room 156

    Hosted by: M. Abeykoon, S. Chodankar, B. Ocko, T. Tanabe, J. Thieme

  18. NSLS-II Colloquium Series

    "Sustainable chemical energy storage: critiques and crystallography"

    Presented by William (Bill) David, University of Oxford, United Kingdom

    Thursday, April 12, 2018, 4 pm
    Physics Bldg. 510 Large Seminar Room

    Hosted by: John Hill

    Our increasing dependence on intermittent renewable energy production places a greater focus on the development of novel, affordable energy storage. The recent emphasis on electrochemical storage, and on lithium batteries in particular, addresses a significant component of our future energy storage requirements but future low-carbon energy scenarios must utilise a broad range of storage options. This talk will focus on several examples the underline the role that synchrotron X-ray and neutron powder diffraction can play in the understanding of both electrochemical and chemical energy storage systems.

  19. NSLS-II Friday Lunchtime Seminar Series

    "ISR Beamline Status Update"

    Presented by Christie Nelson, NSLS-II

    Friday, April 6, 2018, 12 pm
    NSLS-II Bldg. 743 Rm 156

    Hosted by: M. Abeykoon, S. Chodankar, B. Ocko, T. Tanabe, J. Thieme

  20. NSLS-II Friday Lunchtime Seminar Series

    "ESM Beamline Status Update"

    Presented by Elio Vescovo, NSLS-II

    Friday, March 30, 2018, 12 pm
    NSLS-II Bldg. 743 Rm 156

    Hosted by: M. Abeykoon, S. Chodankar, B. Ocko, T. Tanabe, J. Thieme

  21. NSLS-II Friday Lunchtime Seminar Series

    "Automated robot based systems for crystallography on beamlines and in laboratories: developments performed on FIP-BM30A at the ESRF"

    Presented by Jean-Luc Ferrer, IBS, Grenoble, France

    Friday, March 30, 2018, 12 pm
    NSLS-II Bldg. 743 Rm 156

    Hosted by: M. Abeykoon, S. Chodankar, B. Ocko, T. Tanabe, J. Thieme

  22. NSLS-II Friday Lunchtime Seminar Series

    "Design and Initial Commissioning Results for SIX, the Soft Inelastic X-ray Scattering Beamline"

    Presented by Joseph Dvorak, NSLS-II

    Friday, March 23, 2018, 12 pm
    NSLS-II Bldg. 743 Rm 156

    Hosted by: M. Abeykoon, S. Chodankar, B. Ocko, T. Tanabe, J. Thieme

  23. NSLS-II Friday Lunchtime Seminar Series

    "SR tomographic imaging studies at the ESRF"

    Presented by Paul Tafforeau, ESRF, France

    Friday, March 9, 2018, 12 pm
    NSLS-II Bldg. 743 Room 156

    Hosted by: Ben Ocko, Shirish Chodankar, Milinda Abeykoon, Juergen Thieme and Guimei Wang

  24. NSLS-II Friday Lunchtime Seminar Series

    "Probing crystal structures of complex materials using the atomic Pair Distribution Function"

    Presented by Milinda Abeykoon, NSLS-II

    Friday, March 2, 2018, 12 pm
    NSLS-II Bldg. 743 Rm 156

    Hosted by: Ben Ocko, Shirish Chodankar, Milinda Abeykoon, Juergen Thieme and Guimei Wang

  25. NSLS-II Friday Lunchtime Seminar Series

    "Using X-ray Fluorescence Microprobe to Elucidate the Chemistry of Trace Elements in Soils and Plants"

    Presented by Ryan Tappero, NSLS-II

    Friday, February 23, 2018, 12 pm
    NSLS-II Bldg. 743 Rm 156

    Hosted by: M. Abeykoon, S. Chodankar, B. Ocko, T. Tanabe, J. Thieme

  26. NSLS-II Friday Lunchtime Seminar

    "Tender-Energy Spectromicroscopy Applications to Natural and Engineered Materials: the Spectromicroscopy Paradox"

    Presented by Paul Northrup, NSLS-II

    Friday, February 16, 2018, 12 pm
    NSLS-II Bldg 743 Rm 156

    Hosted by: M. Abeykoon, S. Chodankar, B. Ocko, T. Tanabe, J. Thieme

  27. NSLS-II Friday Lunchtime Seminar Series

    "Fabrication of rotating lattice single crystal - a novel form of solid"

    Presented by Himanshu Jain, Lehigh University

    Friday, February 9, 2018, 12 pm
    NSLS-II Bldg. 743 Room 156

    Hosted by: M. Abeykoon, S. Chodankar, B. Ocko, T. Tanabe, J. Thieme

  28. NSLS-II Friday Lunchtime Seminar Series

    "Combining high energy x-ray diffraction techniques with laser-induced fluorescence in operando catalysis"

    Presented by Uta Hejral, Lund University, Sweden

    Friday, February 2, 2018, 12 pm
    NSLS-II Bldg. 743 Rm 156

    Hosted by: M. Abeykoon, S. Chodankar, B. Ocko, T. Tanabe, J. Thieme

  29. NSLS-II Friday Lunchtime Seminar Series

    "Revolutionizing synchrotron science: the National Synchrotron Light Source" and "Nanofabrication of Hard X-ray Optics for the APS and APS-Upgrade"

    Presented by John Hill and Michael Wojcik, NSLS-II at BNL and APS at ANL

    Friday, January 19, 2018, 12 pm
    NSLS-II, Bldg. 743 Room 156

    Hosted by: Ben Ocko, Shirish Chodankar, Milinda Abeykoon, Juergen Thieme and Guimei Wang

  30. NSLS-II Seminar

    "Using X-Ray and Infrared Imaging to Understand How Fungus can be used to Grow Bigger Plants"

    Presented by Tiffany Victor, PhD, Photon Sciences

    Friday, January 12, 2018, 12 pm
    NSLS-II Bldg. 743 Rm 156

    Hosted by: Lisa Miller

  31. NSLS-II Colloquium Series

    "Development of insertion devices at SOLEIL"

    Presented by Marie Emmanuelle Couprie, SOLEIL, France

    Thursday, January 11, 2018, 4 pm
    Large Seminar Room, Bldg. 510

    Hosted by: John Hill

    Insertion devices (undulators and wigglers) are essential components for accelerator based light sources, such as synchrotron radiation facilities implemented on storage rings and free electron lasers. The wide panoply of insertion devices developed at Synchrotron SOLEIL (electromagnetic, combined permanent magnet and electromagnetic for rapid switching of the polarization, permanent magnet APPLE-II, hybrid in-vacuum and cryogenic undulators, out and in-vacuum wigglers) enables to cover a very wide spectral range (from the UV to the hard X-rays), and to provide flexibility for the users of the SOLEIL third generation light source. Starting from the description of the developments carried out at SOLEIL on the different types of systems, some future perspectives will be given, considering the evolution of the specifications of the different light source types. The use of the undulator radiation for photon beam based alignment and adjustment (such as taper) will be discussed. Furthermore, undulator radiation can serve as an electron beam diagnostic and provide a further insight on the electron beam quality itself, as illustrated in the case of the COXINEL project, using laser plasma acceleration.

  32. NSLS-II Seminar

    "The Canadian Light Source – A Bright Light on the Prairies"

    Presented by Rob Lamb (CEO) and Dean Chapman (Science Director), Canadian Light Source, Canada

    Wednesday, December 13, 2017, 11 am
    NSLS-II, Bldg. 745

    Hosted by: Qun Shen

    The Canadian Light Source (CLS) began operations in 2005 with 7 beamlines. Now a dozen year later, the last of 22 beamlines are in the final stages of construction. The ring is now almost completely filled with only one straight remaining. As the second decade of the CLS begins and the CLS matures, a new strategic plan focuses on using our most precious resource – the staff – to be more engaged in helping solve problems of societal importance. Some aspects of this plan and unique highlights from the facility such as agricultural and medical imaging research will be discussed.

  33. NSLS-II Engineering Seminar Series

    "Introduction to NSLS-II Survey and Alignment"

    Chenghao Yu, Brookhaven National Laboratory

    Tuesday, December 12, 2017, 2 pm
    John Dunn Seminar Room, Bldg. 463

    Hosted by: Sushil Sharma & Steven Hulbert

    NSLS-II at Brookhaven National Laboratory is one of the newest and most advanced synchrotron facilities in the world. The accelerator and beamline components of this machine require very precise alignment to meet their performance requirements. For example, the alignment tolerance of magnets on a common girder of the storage ring is ± 30 µm and adjacent girders need to be aligned to within ± 100 µm. The precise alignment of the machine must be maintained throughout its lifetime. The alignment philosophy and processes, which are based on primary/secondary survey networks and modern laser trackers, will be discussed. The use of vibrating wire technique for a more precise alignment of the magnets will be described. Several "lessons–learned" examples will be presented to highlight good alignment practices and procedures. The Survey and Alignment group members, who are ready to support all survey and alignment requests across the lab, will be introduced.

  34. NSLS-II Seminar

    "Recent Infrastructure Developments in Materials Project"

    Presented by Patrick Huck, Lawrence Berkeley National Laboratory

    Tuesday, December 12, 2017, 11 am
    NSLS-II, Bldg. 743, Room 156

    Hosted by: Eli Stavitski

    Materials Project (MP, https://materialsproject.org) is harnessing the power of supercomputing together with state-of-the-art quantum mechanical theory and a scientific workflow stack driven by open-source Python software to compute the properties of all known inorganic materials and beyond, design novel materials and offer the data for free to the community together with online analysis and design algorithms. MP now also allows users to contribute and share new theoretical and experimental materials data with its community of more than 40,000 users via the MPContribs framework. The MPComplete service allows users to suggest new compounds for calculation by MP, thereby involving the community in the process of growing the available materials data. MPCite creates persistent citations and facilitates sharing amongst collaborators by assigning Digital Object Identifiers (DOIs) to all MP compounds. MPContribs, MPComplete and MPCite are important steps in MP's effort to deliver a next-generation collaborative platform for Materials (Data) Science.

  35. NSLS-II Friday Lunchtime Seminar Series

    "Synchrotron Radiation Calculations and Insertion Devices: Practical Examples from NSLS II Beamlines"

    Presented by Dean Hidas, Photon Sciences, BNL

    Friday, December 8, 2017, 12 pm
    NSLS-II Bldg 743 (LOB 3), room 156

    Hosted by: Ben Ocko, Shirish Chodankar, Milinda Abeykoon, Juergen Thieme and Guimei Wang

  36. NSLS-II Colloquium Series

    "Imaging dynamics of radiation-sensitive molecules."

    Presented by John Spence, Physics, Arizona State University, Tempe, AZ

    Thursday, November 9, 2017, 4 pm
    Large Seminar Room, Bldg. 510

    Hosted by: John Hill

    The possibility of out-running radiation damage by the "diffract-and-destroy method, using femtosecond pulses of either electrons or hard X-rays, opens completely new vistas for imaging molecular dynamics at atom resolution and sub-picosecond speeds (1). First, I'll compare high-energy electron beams for this purpose, and compare them in regard to damage mechanisms and time-scales with XFEL radiation. I'll suggest a fast mode of image formation which provides high resolution despite the use of the large incoherent photocathode. I'll then review our work using the hard X-ray pulsed laser at SLAC within our BioXFEL 6-campus NSF consortium (http://www.bioxfel.org), aimed at the application of X-ray lasers (XFELs) to Structural Biology. I'll show molecular movies from light-sensitive proteins with 150 fs time resolution and near-atomic spatial , using both crystals and solution scattering obtained from the LCLS XFEL at SLAC, and very recent single-particle virus images (one virus per shot) showing dynamics. I'll discuss work in my lab on methods for hydrated sample delivery for an XFEL, and the compact IC XFEL under construction on the ASU campus, which uses a laser as an undulator. Finally, I'll review a recent proposal for the use of intensity interferometry to analyze the angular dependence of inner-shell X-ray fluorescence from a molecule. See Google Scholar for references and the many collaborators whom I thank. 1. J.Spence. XFELS for structure and dynamics in biology. IUCrJ 4, 322 (2017).

  37. NSLS-II Friday Lunchtime Seminar Series

    "Fast switching between 2D and direct, 3D XRF imaging using Collimating Channel Arrays and the Maia detector" and "Sirepo – an open-source cloud-based software interface for X-ray source and optics simulations"

    Presented by Arthur Woll and Maksim Rakitin, CHESS, Cornell University and NSLS-II, BNL

    Friday, October 27, 2017, 12 pm
    NSLS-II Bldg 743 (LOB 3), room 156

    Hosted by: Ben Ocko, Shirish Chodankar, Milinda Abeykoon, Juergen Thieme and Guimei Wang

  38. NSLS-II Seminar

    "The Australian Synchrotron Imaging and Medical Beamline: Melting components, scanning rhinos and planning human imaging"

    Presented by Daniel Häusermann, Australian Synchrotron, Australia

    Friday, October 27, 2017, 10 am
    NSLS-II, Bldg. 743 Rm 156

    Hosted by: Andrew Broadbent

    The main characteristics of the Imaging and Medical Beamline (IMBL) are ? 150m long, 3 experiment enclosures ? 36kW X-ray power ? Water cooled monochromator, minimal optics ? Samples up to 1m x 1.2m ? Energies from 20 to 350keV ? Computed tomography ? In vivo imaging and CT ? Radiotherapy research ? Extensive support infrastructure ? Clinical programmes with human patients Total power, beam aspect ratio and beamline configuration flexibility present unique challenges and plenty of opportunity for destroying components. Despite this the IMBL reliability and science programmes are outstanding. Research ranges from palaeontology and materials to micro-beam radiotherapy (MRT) and world unique large animal in vivo imaging, including CT. Furthermore, preparation for clinical research with human patients has led the development of novel approaches to equipment and beamline safety. This presentation will cover technical features, accidents and their mitigation, science results and the preparation for human imaging and MRT trials, including the new beamline components and modifications these demand.

Currently showing events from the past year. See all past events »

  1. OCT

    22

    Monday

    NOBUGS 2018: New Opportunities for Better User Group Software

    October 22-26, 2018

  2. NOV

    6

    Tuesday

    Short Course: Introduction to X-ray Absorption Spectroscopy

    November 6-8, 2018

  3. JUN

    23

    Sunday

    11th International Conference on Inelastic X-ray Scattering (IXS2019)

    June 23-28, 2019

  1. NSLS-II Pair Distribution Function School 2018

    September 17-19, 2018

  2. 10th International Workshop on X-ray Radiation Damage to Biological Samples

    September 13-14, 2018

  3. Coherence 2018: International Workshop on Phase Retrieval and Coherent Scattering

    June 24-28, 2018

  4. 2018 NSLS-II and CFN Users' Meeting

    May 21-23, 2018

  5. Data Analysis and Modeling of XANES and EXAFS Spectra: Applications to Nanomaterials

    November 1-3, 2017

  6. Synchrotron Environmental Science Symposium 7: Illuminating the Links Between Environmental Science and Human Health

    October 30 - November 1, 2017

  7. 2017 NSLS-ll and CFN Users' Meeting

    May 15-17, 2017

  8. High-Brightness Synchrotron Light Source Workshop

    April 26-27, 2017

  9. X-ray Absorption Fine Structure Spectroscopy (XAFS) Short Course: Principles and Applications

    November 2-4, 2016

  10. 14th International Conference on Surface X-ray and Neutron Scattering (SXNS14)

    July 10-14, 2016

  11. 2016 NSLS-ll and CFN Users' Meeting

    May 23-25, 2016

  12. Advanced Topics in XAFS Data Analysis and Modeling

    November 5-7, 2015

  13. 8th International Workshop on Infrared Microscopy and Spectroscopy using Accelerator Based Sources

    October 11-15, 2015

  14. Collaboration Meeting on Simulation and Modeling for SR Sources and X-Ray Optics

    October 1-2, 2015

  15. NSLS-II Strategic Planning Workshop

    September 24-25, 2015

  16. 23rd International Congress on X-ray Optics and Microanalysis (ICXOM23)

    September 14-18, 2015

  17. 12th International Conference on Synchrotron Radiation Instrumentation (SRI 2015)

    July 6-10, 2015

  18. 2015 NSLS-II & CFN Joint Users' Meeting

    May 18-20, 2015

  19. First Science at the ABBIX Beamlines

    April 21-22, 2015

  20. Short Course: Methods and Applications of X-Ray Absorption Fine Structure Spectroscopy

    November 13-15, 2014

  21. NSLS "Last Light"

    September 30, 2014

  22. Joint NSLS/NSLS-II & CFN Users' Meeting

    May 19-21, 2014

  23. NSLS-II Early Experiment Workshop: IXS Focused Session

    October 1, 2013

  24. NSLS-II First-Experiments Workshop

    August 12-13, 2013

  25. NSLS and CFN Users' Meeting

    May 20-22, 2013

  26. Seventh International Workshop on Radiation Safety at Synchrotron Radiation Sources

    May 8-10, 2013

  27. RapiData 2013

    April 21-26, 2013

  28. X6A Workbench: Hands-on Synchrotron Structural Biology

    January 28 - February 1, 2013

  29. XANES Short Course: Theory, Analysis, Applications

    November 8-10, 2012

  30. Synchrotron Radiation in Art and Archaeology (SR2A)

    June 5-8, 2012

  31. 2012 NSLS/CFN Joint Users' Meeting

    May 21-23, 2012

  32. Operando IV

    4th International Congress on Operando Spectroscopy

    April 29 - May 3, 2012

  33. X6A Workbench: Hands-on Synchrotron Structural Biology

    March 27-30, 2012

  34. Photon Sciences Users' Executive Committee and Town Meetings

    August 12, 2011

  35. Materials Diffraction Suite Workshop

    July 18-20, 2011

  36. 2011 NSLS/CFN Users' Meeting

    May 23-25, 2011

  37. Workshop on Supercritical Carbon Dioxide-Materials Interactions

    March 21-23, 2011

  38. Advanced Topics in XAFS Data Modeling

    November 4-6, 2010

  39. EPICS Collaboration Meeting - Fall 2010

    October 7-14, 2010

  40. 2010 Joint NSLS and CFN Users Meeting

    May 24-26, 2010

  41. In Situ and Operando XAFS Experiments and Data Analysis

    October 22-24, 2009

  42. MX Frontiers at the One Micron Scale

    July 23-24, 2009

  43. The Experimental Program to Stimulate Competitive Research (EPSCoR) Review 2009

    July 20-23, 2009

  44. INCREASE Workshop

    Interdisciplinary Consortium for Research and Educational Access in Science and Engineering

    July 15-17, 2009

  45. International Workshop for New Opportunities in Hard X-ray Photoelectron Spectroscopy: HAXPES 2009

    May 20-22, 2009

  46. 2009 NSLS / CFN Users' Meeting

    May 18-20, 2009

  47. Applications of Synchrotron Techniques in Glass Research

    April 6-7, 2009