ANBUG-AINSE Neutron Scattering Symposium, AANSS 2018

Australia/Sydney
AINSE Conference Centre New Illawarra Road Lucas Heights NSW 2234 Australia

AINSE Conference Centre New Illawarra Road Lucas Heights NSW 2234 Australia

AINSE Conference Centre, New Illawarra Road, Lucas Heights, NSW 2234, Australia
Gail Iles (RMIT)
Description

Home

We are pleased to announce that the 2018 ANBUG-AINSE Neutron Scattering Symposium will be held on 19th – 21stNov 2018 at the AINSE conference centre, Lucas Heights, New South Wales, at the site of the ANSTO-operated OPAL research reactor near Sydney.
The symposium is the biennial meeting of the neutron scattering community in Australia and New Zealand, and also welcomes the many international users of the Australian OPAL research reactor.

About the Symposium

Welcome to the AANSS 2018 website. This year, we have extended the programme to take place over three days. There are a number of sessions in various fields of science such as physics, chemistry, biology and engineering. There will also be a session dedicated to neutron techniques.

This symposium is suitable for undergraduate and postgraduate students, postdoctoral researchers and scientists.  Limited accommodation is available on site.

We are keen to make this symposium available to as many people as possible, therefore student fees will be low. In addition, students presenting from AINSE member institutions requiring flights to Sydney are eligible to apply for an AINSE travel scholarship. AINSE funding is for flights only with a limited number of scholarships available.

We are excited to provide this opportunity to share the latest progress in science and engineering in the neutron scattering world. We look forward to receiving your abstract and hearing about your research in November.  

We acknowledge the Dharawal speaking people, traditional custodians of the land, and pay our respects to elders past and present.

    • 09:00 09:30
      Registration
    • 09:30 10:30
      Plenary
      • 09:30
        The present and future of neutron scattering for the characterisation of key functional materials 1h

        Properties and functions of materials are determined by the structure and its evolution on every relevant time, length, field and energy scale. To understand these, neutrons play a critical role in providing important insights into the structure of polar functional materials as it responds to stimuli. In this talk, I will present a summary of recent progress in neutron scattering studies of piezoelectric, anti/ferroelectric and multiferroic materials, with a special focus on the investigation of neutron diffraction conducted under different fields (e.g. temperature, magnetic/electrical field and pressure). I will also report structurally dynamic behaviours of zeolites and metal-organic frameworks (MOFs) investigated by using time-of-flight inelastic neutron scattering and comment on the role neutrons play in gaining new insights into the properties of a broad range of key materials for practical application. I will then discuss overcoming challenges and technical difficulties to attain precision neutron analyses, and give my personal perspective as a user on the continuous development of instruments and methods needed for neutron scattering studies in the future.

        Speaker: Yun Liu (The Australian National University)
    • 10:30 11:00
      Morning Tea
    • 11:00 12:30
      Topical Session 1: Advanced Materials
    • 12:30 14:00
      Lunch
    • 14:00 15:30
      Topical Session 2: Physics
    • 15:30 15:45
      Afternoon Tea
    • 15:45 16:55
      Topical Session 3: Earth & Environment
      • 15:45
        Neutrons Illuminate the Muddy World of Clay – Water Dynamics 30m

        Hydrous clay minerals (smectites) have complex interactions with water that both define them as separate from other layer silicates (e.g., micas) and also impart their unique suitability as environmental barriers. Water interacts with clay mineral surfaces through cation hydration, surface adsorption and matrix suction. The hydration energies of cations held within the interlayer space of montmorillonite have long been viewed as key to clay mineral hydration. Many experiments have shown that the charge and hydration energy of the interlayer cation imparts differences in the way the clay mineral hydrates, orders and interacts with its surroundings. For example the presence of sodium facilitates water mobility into and out of the interlayer space more effectively than calcium. Water adsorption to the surfaces of clay minerals are also important: halloysite contains interlayer water without the presence of interlayer cations; instead the very low residual charge at the gibbsite-like surface is thought to enhance fairly strong water-to water hydrogen bonding so that water is less mobile at lower temperatures in halloysite than in montmorillonite. As fine-grained materials, the structure of the pore-network within a particle of clay mineral (containing perhaps many thousands of individual layers) can be shown to control water uptake and release. During either of these processes, the pore-structure can change in smectites, making complete characterization difficult.
        Various approaches can be used to study the above processes and this paper serves to highlight applications of neutron scattering, particularly quasi-elastic neutron scattering (QENS) and the analysis of elastic fixed window (EFW) intensity to study the mobility of water within bulk pores, the interlayer space, and surrounding the interlayer cation of montmorillonite at different temperatures and under different hydration states. It will be shown that full quantification of water in various hydration states within a well-characterised montmorillonite sample can be achieved. Further it will be shown how this can be related to applied engineering problems in determining the unfrozen water content of a bentonite (a smectite enriched rock) used as an environmental barrier for site remediation work by the Australian Antarctic Division at Casey Station, Antarctica.

        Speaker: Dr. Will Gates (Deakin University)
    • 17:00 17:30
      Poster SLAM
    • 17:30 19:00
      Poster Session
    • 09:00 10:45
      Topical Session 4: Chemistry
      • 09:00
        Measurement of Magnetic Exchange in Asymmetric Lanthanide Dimetallics 1h 30m

        We have been investigating the magnetic interactions between lanthanide ions in a series of isostructural asymmetric dimetallic complexes of dysprosium(III), erbium(III) and ytterbium(III). Using a barrage of techniques including electron paramagnetic resonance spectroscopy, inelastic neutron scattering, and complete active space self-consistent field calculations, we have determined the highly anisotropic magnetic coupling matrix within the low-lying manifold spanned by the ground Kramers doublets of each ion.

        In all cases the magnetic interaction is not solely dipolar in origin, indicating a measurable superexchange component. We find a unique orientation for the magnetic interaction matrix, corresponding to a common elongated oxygen bridge for the erbium(III) and ytterbium(III) analogues, suggesting a microscopic physical connection to the magnetic superexchange. These results are vital for building and validating model microscopic Hamiltonians to understand the origins of magnetic interactions between lanthanides and how they may be controlled with chemistry.

        [1] E. Moreno Pineda, N. F. Chilton, R. Marx, M. Dörfel, D. O. Sells, P. Neugebauer, S.-D. Jiang, D. Collison, J. van Slageren, E. J. L. McInnes and R. E. P. Winpenny, Nature Commun., 2014, 5, 5243.

        [2] M. J. Giansiracusa, E. Moreno-Pineda, R. Hussain, R. Marx, M. Martínez Prada, P. Neugebauer, S. Al-Badran, D. Collison, F. Tuna, J. van Slageren, S. Carretta, T. Guidi, E. J. L. McInnes, R. E. P. Winpenny and N. F. Chilton, J. Am. Chem. Soc., 2018, 140, 2504–2513.

        Speaker: Dr. Nicholas Chilton (The University of Manchester)
    • 10:45 11:00
      Morning Tea
    • 11:00 12:40
      Topical Session 5: Neutron Facilities
      • 11:00
        Recent Progress and Scientific Activities at Materials and Life Science Experimental Facility, J-PARC 30m

        Materials and Life Science Experimental Facility (MLF) at J-PARC is a user facility providing the world highest class neutron and muon pulsed beam. As a neutron part of MLF [[1]], we are serving 20 neutron instruments to user program, which are covering various type of measuring techniques, i.e., direct/indirect geometries and spin-echo spectrometers for inelastic and quasielastic neutron scattering, single-crystal, powder, engineering and high-pressure dedicated diffractometers, a total scattering instrument, reflectometers in horizontal and vertical geometries, a small and wide angle scattering instrument, an energy resolved imaging facility, beamlines for fundamental physics studies, and so on. Also, a polarized neutron dedicated chopper spectrometer is its commissioning phase and will be on line soon. These instruments are realizing research in wide range of fields, such as fundamental physics, solid state physics, biology, chemistry and industrial applications, which are carried out by users (we had 950 unique users visited MLF in 2017) and facility staff. We are also devoting some of efforts to promoting or to enhance scientific outcome. One of examples is a deuteration laboratory program which is under way with strong help of Australian friends.
        In this presentation, I will overview current status of our neutron source, neutron instruments at MLF with selected topics of recent scientific output from the facility.

        Reference
        [1] K. Nakajima et al., Quantum Beam Science 1, 9 (2017).

        Speaker: Kenji Nakajima (J-PARC Center)
    • 12:40 14:00
      Lunch
    • 14:00 15:30
      Topical Session 6: Engineering & Industry
    • 15:30 15:45
      Afternoon Tea
    • 15:45 16:55
      Topical Session 7: Imaging & Cultural Heritage
    • 18:00 20:00
      Conference Dinner
    • 09:00 10:45
      Topical Session 8: Biology
      • 09:00
        Behaviour of Single Transmembrane Peptides During In Meso Crystallization from the Contrast-Matched Lipidic Cubic Phase of Monoolein 30m

        In meso membrane protein crystallization within a lipidic mesophase has revolutionized the structural biology of integral membrane proteins (IMPs). High-resolution structures of these proteins are crucial to understanding fundamental cellular processes at a molecular level, and can lead to new and improved treatments for a wide range of diseases via rational drug design. However, overall success rates of the promising in meso crystallization technique remain low because of a fundamental lack of understanding about factors that promote crystal growth. In particular, to date, two decades from invention of the method, the protein-eye-view of the in meso crystallization mechanism had not been solved. We have investigated this for the first time using small-angle neutron scattering (SANS).
        Contrast-matching between the scattering of the lipid membrane formed by MO and the aqueous solution was used to isolate and track the scattering of single-transmembrane peptides during the growth of protein crystals in meso. No peptide enrichment was observed at the flat points of the diamond cubic QIID phase of MO in contrast to suggestions in several modeling studies. During in meso crystallization of the DAP12 peptide a decrease in form factor and a transient fluid lamellar Lα phase could be observed providing direct evidence for the proposed crystallization mechanism. Synthesis of fully deuterated MO was required for this purpose and scattering of this new material in various solvents and under a range of conditions will be described, specifically regarding the effect of the relative scattering length densities (SLD) of the headgroup, acyl chain and solvent, which can advance the use of neutron scattering with other self-assembly materials.

        Speaker: Charlotte Conn (RMIT)
    • 10:45 11:00
      Morning Tea
    • 11:00 12:40
      ANBUG, AGM & Award Ceremony
    • 12:40 14:00
      Lunch
    • 14:00 15:45
      Topical Session 9: Neutron Instruments & Techniques
    • 15:45 16:00
      Meeting Close
Your browser is out of date!

Update your browser to view this website correctly. Update my browser now

×