22 January (Thursday), 11:00am, B83 Conference Room. Hosted by Garry McIntyre Prof Thomas Vogt University of South Carolina "Real Space Imaging of Complex Materials"
Materials with complex structures and composition are ubiquitous in real world applications. To derive meaningful structure-property relationships detailed local structural and compositional characterization is important. I will give a short introduction into aberration-corrected scanning transmission electron microscopy and demonstrate its power as a real space imaging tool by describing the structural characterization of industrially employed selective oxidation catalysts.
30 January (Friday), 11:00am, B83 Conference Room. Hosted by Jamie Schulz Sung-Min Choi KAIST, Daejeon, Republic of Korea "Small Angle Neutron and X-ray Scattering Studies of Hierarchically Self Assembled Binary Superlattice of 1D Nanoparticles"
 Lim, S.-H.; Jang, H.-S.; Ha, J.-M.; Kim, T.-H.; Kwasniewski, P.; Narayanan, T.; Jin, K.S.; Choi, S.-M., Angew. Chem. Int. Ed. 2014, 53, 12548-12554.
 Doe, C.; Jang, H.-S.; Kim, T.-H.; Kline, S.R. and Choi, S.-M., J. Am. Chem. Soc. 2009, 131, 16568-16572.
 Jang, H.S.; Kim, T.-H.; Do, D.; Lee, M.-J.; Choi, S.-M. Soft Matter, 2013, 9, 3050-3056.
 Kim, T.-H.; Do, C.; Kang, S.-H.; Lee, M.-J.; Lim, S.-H.; Choi, S.-M., Soft Matter, 2012, 8, 9073-9078.
12 February (Thursday), 11:00am, B83 Conference Room. Hosted by Max Avdeev Prof John Evans University of Durham "New Infinitely Adaptive Transition Metal Oxychalcogenides: Synthesis, Structures, Modulations and Magnetism"
My group is interested in the synthesis and properties of functional inorganic materials, and we use a variety of experimental and theoretical methods to understand structure property relationships in the materials we make. One of our core techniques is powder diffraction (neutron and X-ray) and we have made a number of methodology contributions in this area including “distortion mode” Rietveld refinement, surface Rietveld refinement and methods for solving complex superstructures. Many of these are implemented in the Topas software package and distributed via my webpages (http://community.dur.ac.uk/john.evans/topas_academic/topas_main.htm; http://topas.dur.ac.uk/topaswiki/doku.php?id=topas)
In this presentation I’ll focus on a new family of materials of composition Ln2O2MSe2 (Ln = La & Ce, M = Fe, Zn, Mn & Cd) which are structurally related to the LaOFeAs superconductors. I’ll describe how it is possible to design and tune remarkably complex transition metal arrays in these structures and discuss how a superspace approach helps rationalize and unify an otherwise complex family of materials. I’ll emphasise how powder neutron diffraction is vital to understand both their nuclear and magnetic structures. I’ll introduce the concept of symmetry-adapted distortion mode refinements (S. Kerman, B.J. Campbell, K.K. Satyavarap, H.T. Stokes, F. Perselli, J.S.O. Evans, Acta Cryst., 2013, A68, 222–234.) and show how they can be a powerful yet simple tool for unravelling complex ordering phenomena in materials such as these.
13 February (Friday), 2:30pm, B83 Conference Room. Hosted by Frank Klose Joel Bertinshaw Bragg Institute, ANSTO "The role of epitaxy, chemistry and magnetic fields in multiferroic systems"
complex interplay between ferromagnetism and ferroelectricity found in
multiferroic systems represents an impressive opportunity for research and
technologies based upon the manipulation of both spin and charge
degrees of freedom, but also signifies a considerable challenge to reveal
the underlying mechanisms. An array of innovative approaches utilising
neutron scattering and complementary techniques, including polarised neutron
reflectometry, neutron diffraction, resonant synchrotron x-rays and modelling,
were used to investigate the effect of internal and external influences upon
the strong electron correlations in multiferroics with exciting
potential for future spintronic applications.
19 February (Thursday), 11:00am, B83 Conference Room Anthony Lanati Macquarie University "Bismuth calibrations and future work on commissioning the Rotational Paris-Edinburgh cell"
The Rotational Paris-Edinburgh Cell (RoPEC), is a unique and versatile high pressure apparatus capable of use on neutron beamlines. This talk will focus on work currently being undertaken to prepare and test the RoPEC for a final goal of commissioning it for use online. A crucial part in this process is running pressure calibrations, using bismuth, to understand the effect torsion has on pressure.
19 February (Thursday), 11:20am, B83 Conference Room Colleen McMahon Macquarie University "Neutron tomography as a tool for giant clam shell investigations"
The cross-sectional slice of a giant clam shell along its growth axis reveals banding of variable transparencies and thickness. This banding is believed to be a physical record of the specimen's age and climate fluctuations. At present, isotpic analyses and trace element ratios have been utilised to measure these variations. Here, neutron tomography is being tested for its viability as a visually complimentary or alternative technique to existing methods.
19 February (Thursday), 11:40am, B83 Conference Room Jack Binns Edinburgh University "Developing High-Pressure Single-Crystal Diffraction on KOALA"
26 February (Thursday), 11:00am, B83 Conference Room Jitendra Mata Bragg Institute, ANSTO "Nanoaggregates of bile salt and cationic surfactant"
3 March (Tuesday), 11:00am, B83 Conference Room tbc "tbc"
4 March (Wednesday), 10:00am, B3, upstairs seminar room Dr Joseph Bevitt ANSTO - Bragg Institute "Bragg Institute Facilities at OPAL"
Australia offers a number of large scale facilities offering the possibility of conducting research in a wide-range of fields. The Bragg Institute leads Australia in the use of neutron scattering and X-ray techniques to solve complex research and industrial problems in many important fields. OPAL and its high-performance cold neutron source assist in placing the Bragg Institute amongst the world's leading neutron research facilities. Neutrons act as a probe of atomic and nanoscale structures enabling us to unravel the mysteries of science in fields as diverse as molecular biology, and proteins to magnetism and materials engineering. Here we will present how to submit your research proposal to the Bragg Institute and which instrument is best suited to your scientific needs.
12 March (Thursday), 11:00am, B83 Conference Room. Hosted by Garry McIntyre Prof Thomas Vogt University of South Carolina "Hydration and Insertion of Chemical Species Under Pressure"
19 March (Thursday), 11:00am, B83 Conference Room Prof Markus Strobl ESS "ESS – status of facility and instrumentation"
In fall 2014 construction of the European Spallation Source (ESS) started with breaking ground and laying the foundation stone.
The long planned and designed ESS long pulse spallation neutron source and major European neutron science center is since becoming a reality, though the path to first neutrons in instruments in 2019 and producing cutting edge science is still a long one. However, first Neutron scattering instruments have entered their construction phase and many others have been decided upon after a long conceptual design phase involving many partner labs form the 17 European states realising this project together. The status of this process and examples of instruments in different project stages designed for this novel source with it s particular time structure will be introduced together with the current developments concerning final solutions serving the realisation of the complete suite of 22+ instruments.
20 March (Friday), 12:30pm, AINSE Theatre Claudio Tuniz ICTP, Italy "Homo sapiens. An unauthorized biography"
26 March (Thursday), 11:00am, B83 Conference Room. Hosted by Garry McIntyre Dr Ivana Evans University of Durham "Structural Chemistry of Functional Materials:
Complexity in the Solid State"
An in-depth understanding of the structure – property relationships is essential for the successful discovery and preparation of new functional materials capable of overcoming the limitations of the currently used ones. As materials structural complexity increases, crystallographic characterisation using a range of diffraction-based and complementary techniques and state-of-the-art data analysis approaches, aided by computational simulations, is essential in providing this insight.
This presentation will focus on the materials for energy- and environmental applications, such as fast ion conductors and photocatalysts, and the crystallographic methods used to characterise them. For example, we have recently reported exceptional low-temperature oxide ion conductivity in Bi1-xVxO1.5+x (x = 0.095, 0.087) phases, with σ = 3.5×10-2 S/cm at 450oC, the highest to-date in a stable 3D fluorite-type system. We have attributed this remarkable behaviour to the simultaneous presence of four key structural factors: a highly polarisable sublattice with vacancies, central atoms able to support variable coordination numbers and geometries, and the rotational flexibility of these coordination polyhedra, co-existing in a pseudo-cubic structure.2 We have found similar structural features to lead to high oxide ion conductivity in a number of other materials with complex superstructures (vanadates, molybdates, tungstates, rhenates, niobates). Other examples will highlight materials with potential applications in catalysis and photocatalysis.
The presentation will emphasise how a combination of careful diffraction-based work (powder and single crystal, X-ray, neutron and electron, in-situ studies), complementary techniques (solid state NMR, electron microscopy), computational methods and characterisation of physical properties is required tounderstand the complexity of next-generation functional materials. These methods and approaches are relevant and widely applicable to different classes of functional materials.
2 April (Thursday), 11:00am, B83 Conference Room Gail N. Iles ANSTO - Bragg Institute "Science in Space: Reality vs Fiction"
Here I share my own experiences of conducting science in microgravity, training the next generation of astronauts, and the similarities to every-day life onboard the International Space Station with those depicted in film. I shall also describe some typical scientific experiments conducted in space, and the process followed to fly your experiment in reduced gravity conditions. Using the French Zero-G airbus, we have performed condensed matter experiments in 2G and microgravity to investigate the agglomeration of intermetallic melts. We discovered that without the earth-based forces of gravity and convective heat flows we were able to grow unique nanoparticulate structures, impossible to fabricate in earth-based laboratories. Recently, Hollywood has treated us to two modern-day blockbuster movies set in space: Gravity, starring Sandra Bullock and Interstellar starring Matthew McConaughy. The films are exciting and tackle Newtonian physics in the special effects, but are the orbital mechanics and relativity accurate? After this seminar –you can decide!
9 April (Thursday), 11:00am, B83 Conference Room. Hosted by Shane Kennedy Faizun Nesa University of Wollongong "Determination of Magnetic Model of Nanoparticle Zn ferrite using neutron diffuse scattering with polarization analysis"
We have studied a series of nanostructured ZnFe2O4 samples produced by mechanical milling (with mean particle sizes from 9 to 90 nm) by neutron diffuse scattering, over the temperature range (1.5 – 295 K). In this study we have used polarization analysis to unambiguously differentiate between atomic and magnetic contributions. It is known that inversion between Zn and Fe sites in these compounds systematically increases with increased milling (as particle size decreases) , leading to marked changes in the magnetic correlations. Consistent with earlier reports on Zinc Ferrites [1, 2], we find that the long range magnetic order (which appears below TN ~10 K) gradually transitions from antiferromagnetic to ferrimagnetic with decreasing particle size. In addition we note an increasing tendency to short range ferromagnetic correlations and changes in the nature of the non-ferromagnetic short range order (above TN) with decreasing particle size . We are working on an interpretation of the change in magnetic properties from bulk to nano-particulate Zinc Ferrite through combination of crystallographic and microstructural factors based on a model with distinct core and shell contributions.
 M Hofmann, S J Campbell, H Ehrhardt & R Feyerherm, J.Mat.Sci.39(2004) 5057 M K Fayek, J Leciejewicz, A Murasik & I I Yamzin, Phys. Stat. Sol. 37 (1970) 843 Y Fei, S J Kennedy, S J Campbell & M Hofmann, Physica B 356 (2005) 264
23 April (Thursday), 11:00am, B83 Conference Room Dr Gordon Thorogood IME, ANSTO "Capability and method of access of the XRD facilities at ANSTO"
23 April (Thursday), 11:20am, B83 Conference Room Joel Davis IME, ANSTO "SEM and FIB capabilities at ANSTO"
23 April (Thursday), 11:40am, B83 Conference Room Mark Blackford IME, ANSTO "ANSTO's TEM capabilities"
14 May (Thursday), 11:00am, B83 Conference Room. Hosted by Frank Klose Abhijit Pramanick City University of Hong Kong "Direct measurement and theoretical modeling of coupled magnetostructural evolution in a ferromagnetic shape memory alloy"
21 May (Thursday), 11:00am, B83 Conference Room Helen Maynard-Casely Bragg Institute, ANSTO "Crystallography that is out of this world!"
28 May (Thursday), 11:30am, B83 Conference Room. Hosted by Garry McIntyre Dr Ivana Evans University of Durham "Applications of physical characterisation methods in cultural heritage science"
4 June (Thursday), 11:00am, B83 Conference Room Alice Klapproth Bragg Institute, ANSTO "Neutron scattering studies on the phase transformation of gas hydrates"
Gas hydrates are discussed as a future energy resource or as a nuisance for the environment and the oil and gas industry. They pose a major risk of disruption to the marine pipelines. At the temperatures and pressures in these pipelines, gas hydrates can form large solid plugs. A clearer understanding of these processes would allow implementation of effective strategies to avoid production losses in gas pipelines. I will present our in situ neutron powder diffraction study of hydrate growth and dissociation for 10% propane-methane gas and D2O ice and liquid water using WOMBAT - ANSTO's high-intensity powder diffractometer.
11 June (Thursday), 11:00am, B83 Conference Room. Hosted by Chris Garvey Ashley Roberts Monash University "Experimental Methods and Applications for New Graphene-Based Materials"
12 June (Friday), 2:00pm, B83 Conference Room. Hosted by Kathleen Wood Kathleen Weigandt NIST "Structure-Function Relationships of Self-Assembled Fibrillar Gels"
18 June (Thursday), 11:00am, B83 Conference Room Dhriti Bhattacharyya IME, ANSTO "The effect of ion beam radiation on the microstructure and mechanical properties of metallic alloys and multilayers"
22 June (Monday), 11:00am, B83 Conference Room. Hosted by Ulf Garbe Robert Acres Australian Synchrotron "Imaging with X-rays at the Australian Synchrotron Imaging and Medical Beamline (IMBL)"
25 June (Thursday), 11:00am, B83 Conference Room Sara Callori Bragg Institute / UNSW "Strain-induced magnetic phase transitions in SrCoO3-δ thin films"
9 July (Thursday), 11:00am, B83 Conference Room Kathleen Wood Bragg Institute, ANSTO "Neutrons for biology: protein interactions, dynamics and hydration"
Since the pioneering first protein structures in the 1960s, amazing technical advances have been made to study the structure of biomolecules. However, current challenges in structural biology have moved beyond knowledge of a single protein structure and how it relates to function. Here I will present several new challenges where neutrons have a unique role to play: the study of biomolecular complexes and protein dynamics. The talk is the plenary lecture I will be giving at the Australia-Oceania Conference on Neutron Scattering.
24 July (Friday), 10:00am, B83 Conference Room. Hosted by Andrew Nelson Norifumi Yamada High Energy Accelerator Research Organization "Kinetics of phospholipid transitions and processes"
29 July (Wednesday), 11:30am, B83 Conference Room Prof. Irene Margiolaki Department of Biology, University of Patras "The Power of Powder: Protein-based drug screening"
Collings, I. et al. (2010). Acta Cryst. D66, 539–548.
30 July (Thursday), 11:00am, B83 Conference Room Shin-ichiro Yano Bragg Institute, ANSTO "Magnetism - analysis and inelastic neutron scattering characterisation"
6 August (Thursday), 11:00am, B83 Conference Room. Hosted by Andrew Nelson Karen Edler Department of Chemistry, University of Bath "Micelles to Materials"
13 August (Thursday), 11:00am, B83 Conference Room Che-Yi Chu Bragg Institute, ANSTO "The self-organization behavior of block copolymers and polymer nanocomposites"
20 August (Thursday), 11:00am, B83 Conference Room Hal Lee Bragg Institute, ANSTO "Latest Status of Neutron Polarisation Analysis Capability on OPAL Instruments"
21 August (Friday), 11:00am, B83 Conference Room. Hosted by Anna Paradowska Anton Tremsin University of California at Berkeley "Applications of white beam and energy-resolved neutron imaging: Current studies and near future opportunities"
27 August (Thursday), 11:00am, B83 Conference Room. Hosted by Chris Garvey Bodo Wilts University of Fribourg "Shaping the rainbow: Interaction of nanostructures and pigments in biological photonic structures
17 September (Thursday), 11:00am, B83 Conference Room Hubert Chevreau Bragg Institute, ANSTO "Neutron scattering on Metal Organic Frameworks for carbon dioxide capture"
24 September (Thursday), 11:00am, B83 Conference Room Bálint Náfrádi EPFL, Switzerland "Low Temperature Dynamics of Magnons in Reduced Dimensions"
8 October (Thursday), 11:00am, B83 Conference Room Josie Auckett Bragg Institute, ANSTO "Characterising energy materials: From metal oxides to MOFs"
15 October (Thursday), 11:00am, B83 Conference Room. Hosted by Frank Klose Ko-Wei Lin Bragg Institute, ANSTO "The characterization of magnetic thin films using ANSTO facilities"
22 October (Thursday), 11:00am, B83 Conference Room Jonathan McCree-Grey Bragg Institute, ANSTO "Dye Sensitised Solar Cells"
29 October (Thursday), 11:00am, B83 Conference Room Yasuhiro Sakamoto Osaka University "Electron microscopy studies of nanoporous materials on the micro- and meso-scale"
12 November (Thursday), 11:00am, B83 Conference Room. Hosted by Tamim Darwish Simone Ciampi University of Wollongong "Electrostatic Catalysis at Interfaces"
19 November (Thursday), 11:00am, B83 Conference Room. Hosted by Tamim Darwish Thomas Millar Western Sydney University "Neutron reflectivity of the lipid layer of tears "
26 November (Thursday), 11:00am, B83 Conference Room. Hosted by Robert Robinson LaReine Yeoh UNSW "Low-dimensional GaAs p-type Semiconductors"
4 December (Friday), 11:00am, B83 Conference Room. Hosted by Anna Paradowska Alexander Lunt University of Oxford "An Overview of Recent Micromechanical Studies at MBLEM, Oxford, UK"
10 December (Thursday), 11:00am, B83 Conference Room Joseph Bevitt Bragg Institute, ANSTO "“Get your old rocks off”: Neutron-CT for digital excavation in palaeontology and archaeology"
One year after the initial tests on DINGO to demonstrate the ability of neutrons to penetrate through massive rock and clay samples and visualise embedded fossilised material, neutron imaging is now accepted as an alternative, or complement to high-resolution X-ray CT and surface-scanning methods in the digital excavation and generation of 3D virtual models of vertebrate fossils, Egyptian mummies and early human cave deposit. Consequently, a significant international paleontological research program has developed on DINGO.
This talk provides a summary of the applications of neutron-CT thus far to:• speciate fully embedded fossils and determine the value of a deposit, without the need for physical extraction;• preserve a record of fossil articulation and characterisation of sediment structure before fossils are physically extracted from their matrix;• digitally reconstruct preserved plant and animal soft-tissue;• image stomach content in dinosaurs;• enable morphological studies of embryonic dinosaur development; and • investigate disease and preventative surgical practice in ancient Egypt.
17 December (Thursday), 11:00am, B83 Conference Room TBC "Slot Available"
22 December (Tuesday), 11:00am, B83 Conference Room. Hosted by Robert Robinson Baek-Seok Seong HANARO "Industrial Applications of Neutron Scattering at HANARO"
24 December (Thursday), 11:00am, B83 Conference Room Gail Iles Bragg Institute, ANSTO "The 2015 Bragg Institute Seminar Series - Summary"
At the beginning of 2015 many people took time to answer a questionnaire about seminar attendance. The questionnaire asked about the things that motivate you both as speakers, and as audience members attending seminars.
The results of this questionnaire were fairly unanimous, in that most speakers appreciated a reasonable number of attendees, i.e. above 10, ideally 20-40, and that participants would be motivated to attend if there were freebies. In order to improve seminar attendance we put in place a number of measures which have, on the whole, been successful. People asked for better notification of upcoming seminars, and therefore we have aimed to send seminar invitations on the Monday prior to a Thursday seminar. In addition, we also released an intranet event about each seminar which could be seen across site. Organising biscuits to be available every session was one of the first changes, and one which has proven to be popular.
In this presentation we shall show all relevant statistics regarding the seminars e.g. attendance, nationality, gender balance etc. We shall also announce the winner of the 'Best Question' raffle and the winners of the best seminars.