A dedicated powder diffraction beamline at the Advanced Photon Source: Commissioning and early operational results

Wang, Jun; Toby, Brian H.; Lee, Peter L.; Ribaud, Lynn; Antao, Sytle M.; Kurtz, C.; Ramanathan, Mala; Dreele, Robert B. Von; Beno, M. A.

doi:10.1063/1.2969260

Cited by 358 publications

(334 citation statements)

References 16 publications

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“…High resolution synchrotron powder diffraction data were collected using beamline 11-BM at the Advanced Photon Source (APS), Argonne National Laboratory using an average wavelength of 0.413850 Å. Discrete detectors covering an angular range from -6 to 16° 2θ were scanned over a 34° 2θ range, with data points collected every 0.001° 2θ at a scan speed of 0.01°/s. 23,24 Samples were diluted with amorphous SiO 2 to keep absorption µr to < 1.5 cm -1 and sealed inside polyimide capillaries. Magnetic measurements were carried out using a Quantum Design SQUID magnetometer in the temperature range 2-300 K on samples (c.a.…”

Section: Methodsmentioning

confidence: 99%

Synthesis, characterisation and properties of rare earth oxyselenides A₄O₄Se₃(A = Eu, Gd, Tb, Dy, Ho, Er, Yb and Y)

2015

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Section: Methodsmentioning

confidence: 99%

Synthesis, characterisation and properties of rare earth oxyselenides A₄O₄Se₃(A = Eu, Gd, Tb, Dy, Ho, Er, Yb and Y)

2015

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“…After the first centrifugation, precipitates were washed five times with 1.5 mL of 70% ethanol by centrifugation and decanting, and an aliquot of the resuspended products was then placed on a TEM copper-formvar grid and dried at 37°C overnight before analysis with a Tecnai G2 Sphera electron microscope at an operating voltage of 200 kV. High-resolution synchrotron powder diffraction data were collected using beamline 11-BM at the Advanced Photon Source, Argonne National Laboratory, using an average wavelength of 0.13702 Å (44). A mixture of National Institute of Standards and Technology standard reference materials, Si (SRM 640c), and Al 2 O 3 (SRM 676) was used to calibrate the instrument, with the Si lattice constant calibrating the wavelength for each detector.…”

Section: Methodsmentioning

confidence: 99%

Evolutionary selection of enzymatically synthesized semiconductors from biomimetic mineralization vesicles

Bawazer

Izumi

Kolodin

et al. 2012

Proc. Natl. Acad. Sci. U.S.A.

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The way nature evolves and sculpts materials using proteins inspires new approaches to materials engineering but is still not completely understood. Here, we present a cell-free synthetic biological platform to advance studies of biologically synthesized solid-state materials. This platform is capable of simultaneously exerting many of the hierarchical levels of control found in natural biomineralization, including genetic, chemical, spatial, structural, and morphological control, while supporting the evolutionary selection of new mineralizing proteins and the corresponding genetically encoded materials that they produce. DNA-directed protein expression and enzymatic mineralization occur on polystyrene microbeads in waterin-oil emulsions, yielding synthetic surrogates of biomineralizing cells that are then screened by flow sorting, with light-scattering signals used to sort the resulting mineralized composites differentially. We demonstrate the utility of this platform by evolutionarily selecting newly identified silicateins, biomineralizing enzymes previously identified from the silica skeleton of a marine sponge, for enzyme variants capable of synthesizing silicon dioxide (silica) or titanium dioxide (titania) composites. Mineral composites of intermediate strength are preferentially selected to remain intact for identification during cell sorting, and then to collapse postsorting to expose the encoding genes for enzymatic DNA amplification. Some of the newly selected silicatein variants catalyze the formation of crystalline silicates, whereas the parent silicateins lack this ability. The demonstrated bioengineered route to previously undescribed materials introduces in vitro enzyme selection as a viable strategy for mimicking genetic evolution of materials as it occurs in nature. directed evolution | in vitro compartmentalization | DNA shuffling | metal oxide nanoparticles | self-assembly

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“…This is somewhat disadvantageous due to the limited beam time available at neutron and synchrotron facilities. However, recent developments, like the mail-in service at beamline 11-BM of the Advanced Photon Source at Argonne National Laboratory [13], enable access to high resolution, synchrotron quality, powder diffraction data in a convenient and timely fashion.…”

Section: Description Of the Experimental Methodologymentioning

confidence: 99%

“…High resolution synchrotron powder diffraction data were collected using beamline 11-BM at the Advanced Photon Source (APS) at Argonne National Laboratory, using a wavelength of 0.413 52Å. Discrete detectors covering an angular range from −6 • to 16 • 2θ were scanned over a 34 • 2θ range, with data points collected every 0.001 • 2θ and a scan speed of 0.01 • s −1 [13,22,23]. For the Rietveld refinement we used EXPGUI software [24], a graphical interface for the GSAS package [25].…”

Section: X-ray Powder Diffraction (Xrd)mentioning

confidence: 99%

Methodology and search for superconductivity in the La–Si–C system

Venta

Basaran

Grant

et al. 2011

Supercond. Sci. Technol.

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In this paper we describe a methodology for the search for new superconducting materials. This consists of a parallel synthesis of a highly inhomogeneous alloy which covers large areas of the metallurgical phase diagram combined with a fast, microwave-based method which allows non-superconducting portions of the sample to be discarded. Once an inhomogeneous sample containing a minority phase superconductor is identified, we revert to well-known thorough identification methods which include standard physical and structural methods. We show how a systematic structural study helps in avoiding misidentification of new superconducting materials when there are indications from other methods of new discoveries. These ideas are applied to the La-Si-C system which exhibits promising normal state properties which are sometimes correlated with superconductivity. Although this system shows indications for the presence of a new superconducting compound, the careful analysis described here shows that the superconductivity in this system can be attributed to intermediate binary and single phases of the system.

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A dedicated powder diffraction beamline at the Advanced Photon Source: Commissioning and early operational results

Cited by 358 publications

References 16 publications

Synthesis, characterisation and properties of rare earth oxyselenides A₄O₄Se₃(A = Eu, Gd, Tb, Dy, Ho, Er, Yb and Y)

Synthesis, characterisation and properties of rare earth oxyselenides A₄O₄Se₃(A = Eu, Gd, Tb, Dy, Ho, Er, Yb and Y)

Evolutionary selection of enzymatically synthesized semiconductors from biomimetic mineralization vesicles

Methodology and search for superconductivity in the La–Si–C system

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A dedicated powder diffraction beamline at the Advanced Photon Source: Commissioning and early operational results

Cited by 358 publications

References 16 publications

Synthesis, characterisation and properties of rare earth oxyselenides A4O4Se3(A = Eu, Gd, Tb, Dy, Ho, Er, Yb and Y)

Synthesis, characterisation and properties of rare earth oxyselenides A4O4Se3(A = Eu, Gd, Tb, Dy, Ho, Er, Yb and Y)

Evolutionary selection of enzymatically synthesized semiconductors from biomimetic mineralization vesicles

Methodology and search for superconductivity in the La–Si–C system

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Product

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Synthesis, characterisation and properties of rare earth oxyselenides A₄O₄Se₃(A = Eu, Gd, Tb, Dy, Ho, Er, Yb and Y)

Synthesis, characterisation and properties of rare earth oxyselenides A₄O₄Se₃(A = Eu, Gd, Tb, Dy, Ho, Er, Yb and Y)