The forgotten role of the ground state in atmospheric photochemistry. This project aims to provide novel solutions to two deficiencies in current atmospheric chemistry models. That is, molecular hydrogen (H2) is underestimated by up to a factor of two, and in polluted areas, HO2 concentrations are underestimated by up to a factor of ten. The project will investigate these solutions and assess their local and global atmospheric impact. By better characterising the atmospheric H2 budget, and the r ....The forgotten role of the ground state in atmospheric photochemistry. This project aims to provide novel solutions to two deficiencies in current atmospheric chemistry models. That is, molecular hydrogen (H2) is underestimated by up to a factor of two, and in polluted areas, HO2 concentrations are underestimated by up to a factor of ten. The project will investigate these solutions and assess their local and global atmospheric impact. By better characterising the atmospheric H2 budget, and the role of ground state reactions in general, the predictive ability of atmospheric models will be improved. This will allow, for example, the outcomes of any change in atmospheric H2 concentration, potentially as part of any future hydrogen economy, to be predicted before they occur. The benefits of this project are global: they allow us to better predict the impact of changes to atmospheric composition – before they occur, and local: Australia’s strengths in physical, theoretical and atmospheric chemistry are reinforced.Read moreRead less
Linkage Infrastructure, Equipment And Facilities - Grant ID: LE180100060
Funder
Australian Research Council
Funding Amount
$563,390.00
Summary
Shared picosecond-laser facility. This project aims to extend the Shared Picosecond Laser Facility to include picosecond-pulse technology and to incorporate new consortium members. The Facility, shared among members at four universities and building on over 23 years of collaboration, continues to provide access to state-of-the-art lasers. The Facility will take advantage of its bulk purchasing power to negotiate significant discounts, extended warranties and maintenance contracts. The new lasers ....Shared picosecond-laser facility. This project aims to extend the Shared Picosecond Laser Facility to include picosecond-pulse technology and to incorporate new consortium members. The Facility, shared among members at four universities and building on over 23 years of collaboration, continues to provide access to state-of-the-art lasers. The Facility will take advantage of its bulk purchasing power to negotiate significant discounts, extended warranties and maintenance contracts. The new lasers will enable access to picosecond timescales and facilitate complex multi-laser experiments in a wide variety of projects including reaction dynamics, materials chemistry and photovoltaics.Read moreRead less
Microplastic infiltration of food webs: cells to ecosystem consequences. Using trophic ecological theory as a framework, this project aims to provide the first comprehensive assessment of the fate and effects of microplastics. Plastic pollution is a persistent and increasing problem. Plastics are degraded into small particles, called microplastics, which are ingested by animals. The project aims to develop much-needed techniques to measure microplastics in biological tissue and apply these techn ....Microplastic infiltration of food webs: cells to ecosystem consequences. Using trophic ecological theory as a framework, this project aims to provide the first comprehensive assessment of the fate and effects of microplastics. Plastic pollution is a persistent and increasing problem. Plastics are degraded into small particles, called microplastics, which are ingested by animals. The project aims to develop much-needed techniques to measure microplastics in biological tissue and apply these techniques in food web studies to determine the capacity of microplastics to transfer from the environment into animals, and how microplastics move through a food web to affect biological diversity and animal health. This information will be used to complete the first risk assessment for microplastics in a major coastal habitat.Read moreRead less
Chemistry at the threshold: unusual mechanisms and unexpected products. The chemical processes in combustion and in the atmosphere are complex and understood incompletely; for example 30-60 million tonnes of acids in the atmosphere are unaccounted for. The project will measure and model three new chemical processes that may account for the atmospheric acids, and other unexplained occurrences in combustion chemistry.
Reactive Intermediates in Atmospheric and Combustion Chemistry. Reactive intermediates are the key species that determine outcomes of the chemical reaction networks in atmospheric and combustion chemistry. However, most reactive intermediates remain undiscovered. The project aims to discover these intermediates using laser spectroscopy. Current models of atmospheric chemistry cannot account for the carbon balance over forests, nor the formation of secondary organic aerosols. Combustion models st ....Reactive Intermediates in Atmospheric and Combustion Chemistry. Reactive intermediates are the key species that determine outcomes of the chemical reaction networks in atmospheric and combustion chemistry. However, most reactive intermediates remain undiscovered. The project aims to discover these intermediates using laser spectroscopy. Current models of atmospheric chemistry cannot account for the carbon balance over forests, nor the formation of secondary organic aerosols. Combustion models struggle to predict how next-generation fuels burn in modern engines. The successful discovery of these intermediates would allow models to be more accurate and predictive. This will allow scientists, engineers and policy makers to make more informed decisions about atmospheric processes and design more efficient new fuels.Read moreRead less
Linkage Infrastructure, Equipment And Facilities - Grant ID: LE110100093
Funder
Australian Research Council
Funding Amount
$600,000.00
Summary
Shared laser facility. This shared laser facility will provide a pool of lasers to support the research of about 20 research groups and 30 PhD students.
Double resonance spectroscopy for astrochemistry. We will use advanced laser techniques to probe simulated astrophysical environments with a view to identifying molecules in space. The types of molecules under study are also of direct relevance to other fields such as combustion, and will reveal details of the chemistry of pollution and atmospheres.
Discovery Early Career Researcher Award - Grant ID: DE120100467
Funder
Australian Research Council
Funding Amount
$375,000.00
Summary
Unravelling the intrinsic structure and stability of multiply charged anions in the gas-phase using photoelectron spectroscopy and mass spectrometry. Molecules possessing multiple negative charges are common constituents in chemistry, influencing a range of processes ranging from photochemical smog formation to protein structure in vivo. This project will develop new technologies to probe their molecular structure in the gas-phase, leading to a more rigorous understanding of these species.
The photons take charge: Elucidating the structure and stability of distonic radical anions by mass spectrometry and photoelectron spectroscopy. Recent work has discovered that certain radical anions have electronic configurations that defy chemical convention and exhibit exceptional radical stability. Exploitation of this breakthrough first requires experimental elucidation of the intrinsic electronic structure of these compounds and how it relates to their remarkable properties. This project w ....The photons take charge: Elucidating the structure and stability of distonic radical anions by mass spectrometry and photoelectron spectroscopy. Recent work has discovered that certain radical anions have electronic configurations that defy chemical convention and exhibit exceptional radical stability. Exploitation of this breakthrough first requires experimental elucidation of the intrinsic electronic structure of these compounds and how it relates to their remarkable properties. This project will probe the fundamental structure and energetics of radical anions by modifying instrumentation to enable multi-step gas-phase ion synthesis to be efficiently coupled with anion photoelectron spectroscopy. These investigations are essential to revealing the scope of this phenomenon in free radical chemistry and biology and could inform future development of new catalysts for polymerisation.Read moreRead less
New laser and mass spectrometry-based tools for comprehensive structural elucidation of lipids and their biomolecular interactions. Lipid-related disorders such as obesity, diabetes and heart disease are reaching epidemic proportions. We propose the development of specialised instrumentation to identify and quantify lipids (fats) in tissue and culture samples thus providing Australian scientists with unique capabilities to investigate the mechanisms of disease.