ANSTO Publications Online

Welcome to the ANSTO Institutional Repository known as APO.

The APO database has been migrated to version 7.5. The functionality has changed, but the content remains the same.

ANSTO Publications Online is a digital repository for publications authored by ANSTO staff since 2007. The Repository also contains ANSTO Publications, such as Reports and Promotional Material. ANSTO publications prior to 2007 continue to be added progressively as they are in identified in the library. ANSTO authors can be identified under a single point of entry within the database. The citation is as it appears on the item, even with incorrect spelling, which is marked by (sic) or with additional notes in the description field.

If items are only held in hardcopy in the ANSTO Library collection notes are being added to the item to identify the Dewey Call number: as DDC followed by the number.

APO will be integrated with the Research Information System which is currently being implemented at ANSTO. The flow on effect will be permission to publish, which should allow pre-prints and post prints to be added where content is locked behind a paywall. To determine which version can be added to APO authors should check Sherpa Romeo. ANSTO research is increasingly being published in open access due mainly to the Council of Australian University Librarians read and publish agreements, and some direct publisher agreements with our organisation. In addition, open access items are also facilitated through collaboration and open access agreements with overseas authors such as Plan S.

ANSTO authors are encouraged to use a CC-BY licence when publishing open access. Statistics have been returned to the database and are now visible to users to show item usage and where this usage is coming from.

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Now showing 1 - 5 of 5

Recent Submissions

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Fabrication of titania nanotube membranes by atomic layer deposition using nanoporous alumina as a template
(Engineers Australia, 2011-09-18) Evans, PJ; Triani, G; Nambiar, M; Shapter, JG; Losic, D
Conformal TiO2 films have been deposited onto highly oriented porous alumina arrays to characterise membranes with controlled pore modification. A suite of tools have been used to probe the evolution of these coated porous structures. Depth profiling by secondary ion mass spectroscopy revealed the distribution of elements Ti and O deposited throughout the coated porous alumina. High resolution imaging using scanning electron microscopy confirmed the reduction in pore-size as a function of deposition cycles. Following the removal of the porous alumina template, free-standing titania nanotubes were prepared which show the pore geometry of the alumina template was preserved. ©2011 Engineers Australia
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Synthesis and characterisation of nanocomposite materials prepared by dispersion of functional TiO2 nanoparticles in PMMA matrix
(Royal Society of Chemistry, 2011-07-29) Arrachart, G; Karatchevtseva, I; Heinemann, A; Cassidy, DJ; Triani, G
Composite powders and thin films composed of poly(methyl methacrylate) (PMMA) and functionalised titania nanoparticles are successfully prepared by in situ bulk co-polymerisation using benzoyl peroxide (BPO) as the initiator. The functionalised titania nanoparticles are synthesised by an arrested hydrolysis of Ti(OiPr)4 with either undecylenic (UA) or undecenylphosphonic (UPA) acids used as the organic templates with the long hydrocarbon chains and functional (terminal double bond) groups. Surface-modified TiO2 nanoparticles could be easily dispersed in organic solvent due to the long hydrocarbon chain surrounding the titanium core, and engaged as a co-monomer in polymerisation with the MMA due to the presence of a terminal double bond. TEM and small angle X-ray scattering (SAXS) data presented support the homogeneous and consistent distribution of inorganic phase within the PMMA matrix, with the larger titania nanoparticles detected when the UPA was employed to modify a TiO2 nanoparticle. This is attributed to the UPA greater binding affinity towards the TiO2 surfaces and therefore particles aggregation to some extent. © 2011 Royal Society of Chemistry
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TEM of atomic layer deposition TiO2
(Australian Society for Electron Microscopy, 2002-02-04) Mitchell, DRG; Attard, DJ; Triani, G
Since the development of the atomic layer deposition (ALD) technique in the 1970s it has been widely used for the deposition of a range of binary, ternary and quaternary thin film systems (Niinisto 1996). The distinguishing feature of ALD is that the surface reactions are self limiting. Precursors saturate the adsorption sites, excess precursor is purged, followed by a pulse of reactant to form the film in-situ. Repetition of this deposition cycle permits films to be deposited to the desired thickness. Since the process is driven by adsorption, it produces films with outstanding conformality with the substrate (Ritala and Leskela, 1999), albeit at the expense of very slow deposition rates ( 50nm/hour). Following the recent commissioning of an ALD deposition system, we have been developing our expertise in the deposition and characterisation of TiO2 films in the first instance. These have potential uses in applications such as optical coatings, photovoltaics, sensors and catalysts. The focus of this paper is to report our plan view and cross-sectional transmission electron microscopy (TEM) studies on these films. Despite the power of the TEM technique, it has enjoyed very limited application to the study of any ALD films to date. Our results describe a detailed picture of the evolution of the film morphology under the influence of deposition temperature and surface chemistry of the substrate. These factors influence the nucleation of crystallisation within the films. Plasmon imaging, energy filtered imaging and electron energy loss spectroscopy enable the films to be characterised at the nanometer scale. ©2002 Australian Society for Electron Microscopy Inc
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The effect of molecular structure on the adsorption of PPO-PEO-PPO triblock copolymers on solid surfaces
(Trans Tech Publications, 2012-09-23) Lin, BJ; Zhu, HT; Tieu, AK; Kosasih, BY; Triani, G
This paper investigates the adsorption behavior of triblock copolymer Poly (propylene oxide)-poly (ethylene oxide)-poly (propylene oxide), PPO-PEO-PPO on silicon and iron surfaces by using the contact angle goniometer, spectroscopic ellipsometer and atomic force microscopy (AFM). After adsorption, the decrease of water contact angle was observed on each surface; and a larger reduction of water contact angle occurred on the surface covered by the copolymer film with longer and higher weight percent of hydrophilic PEO block. This means that the PEO block may be on the top of the adsorbed copolymer film. The film thickness measurement shows that the copolymer with longer and higher weight percent of PPO block forms a thicker film on the hydrophobic surface, which suggests that the hydrophobic PPO block of the copolymer in the aqueous solution plays the main role during the adsorption of PPO-PEO-PPO onto the hydrophobic surface. It has been found from the AFM results that the roughness of the surface decreased after adsorption and the smoother topography was observed on the surface adsorbed by a thicker adsorbed film. © 2023 Trans Tech Publications
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Pyrochlore glass-ceramics for the immobilization of molybdenum-99 production wastes: demonstrating scalability and flexibility to waste stream variance
(Elsevier, 2021-11) Farzana, R; Zhang, YJ; Dayal, P; Aly, Z; Holmes, R; Triani, G; Vance, ER; Gregg, DJ
Pyrochlore glass ceramics have been fabricated via in-situ crystallization under reducing conditions by both sintering and hot isostatic pressing (HIPing) as candidate wasteforms for the acidic waste biproduct of Mo-99 radiopharmaceutical production. The tailored wasteform demonstrates flexibility in the wasteform design to receive the required waste variability, it also suitably passes high-level waste performance requirement, and successfully scales to 1 kg scale with 45 wt.% waste loading. U-rich pyrochlore as the major phase was confirmed by X-ray diffraction, scanning electron microscopy and energy dispersive X-ray spectroscopy, with residual glass and minor secondary phases. The presence of both U4+ and U5+ valences in the wasteforms was revealed by diffuse reflectance spectroscopy. Addition of glass content had little influence on the pyrochlore composition but facilitated minor perovskite formation. The up-scaled dense, HIPed sample showed elemental releases of < 2 g/L for all elements in durability experiments. © 2021 Elsevier Ltd