Designing polymer additives to control breakup of jets and impacting drops. Current agricultural spraying of pesticides is inefficient, causing serious environmental contamination. The project aims to design polymeric additives to control the fluid dynamics of spraying so that drops reach, and then adhere to their target leaf surfaces.
Hydraulic erosion of granular structures: experiments and computational simulations. Erosion due to hydraulic forces causes vast damage to infrastructure and buildings in Australia and overseas. The project aims to improve the predictability and controllability of flooding related disasters caused by erosion. The project involves experiments as well as cutting edge computer simulations.
Wet Particulate Materials - Flow or Fracture? Most advanced materials are produced from starting materials in the form of fine particles. Powders, especially in ceramic engineering, are first processed wet into near-final shape. Improved understanding of the fracture of particle networks is critical in order to process nano-sized advanced ceramic materials for use in solar energy harvesting and extreme heat engine applications as well as minimising drying cracks in paints and coatings. The resea ....Wet Particulate Materials - Flow or Fracture? Most advanced materials are produced from starting materials in the form of fine particles. Powders, especially in ceramic engineering, are first processed wet into near-final shape. Improved understanding of the fracture of particle networks is critical in order to process nano-sized advanced ceramic materials for use in solar energy harvesting and extreme heat engine applications as well as minimising drying cracks in paints and coatings. The research aims to identify the fundamental link between particle network strength and structure and the fracture of wet powder bodies. The microscopic mechanisms that control the behaviour will be investigated with a particular focus on toughening mechanisms including the influence of plasticity.Read moreRead less
Encoding Interactions and Printability into Hairy Colloidal Biomaterials. Printing mixtures of live cells and biomaterials (or 'BioInks') to make bespoke engineered tissues has the potential to enable personalised platforms for therapeutic discovery and organ replacement. Using a novel high throughput approach to materials synthesis, BioInk design and process optimisation, this project aims to discover new biomaterials and printing nozzles to help realise this potential. It will produce new insi ....Encoding Interactions and Printability into Hairy Colloidal Biomaterials. Printing mixtures of live cells and biomaterials (or 'BioInks') to make bespoke engineered tissues has the potential to enable personalised platforms for therapeutic discovery and organ replacement. Using a novel high throughput approach to materials synthesis, BioInk design and process optimisation, this project aims to discover new biomaterials and printing nozzles to help realise this potential. It will produce new insights in colloid science, cell-laden biomaterials design, and BioInk processing. Structure-property-function guides for colloid-based BioInks and quality-assured bioprinting as outcomes represent significant benefits for researchers and industries alike engaged in biofabrication, cell therapy and biotherapeutics.Read moreRead less
Programming anisotropy into responsive soft materials. The project aims to generate viscoelastic soft materials with programmable anisotropy using aqueous suspensions of colloidal rods that have tunable surface coatings. The project expects to generate new knowledge in the rheology and structural characteristics of this unique class of materials. A key innovation is the use of charge-directed polymer self-assembly to control colloidal interactions, suspension rheology and phase behaviour. The in ....Programming anisotropy into responsive soft materials. The project aims to generate viscoelastic soft materials with programmable anisotropy using aqueous suspensions of colloidal rods that have tunable surface coatings. The project expects to generate new knowledge in the rheology and structural characteristics of this unique class of materials. A key innovation is the use of charge-directed polymer self-assembly to control colloidal interactions, suspension rheology and phase behaviour. The intended outcome is spatial control over the orientation of nanostructures, potentially mimicking the structural hierarchy found in nature. This should provide significant benefits to the creation of viscoelastic materials with complex rheology as well as structural, mechanical and optical heterogeneity.Read moreRead less
Promoting new reaction pathways with nonequilibrium flow. This project aims to develop a fundamental molecular level understanding of flow-induced physical and chemical reactions in liquids. Nonequilibrium molecular dynamics simulations will be used to gain insight into the mechanisms that promote reactions under shear, and how these are related to molecular structure and fluid composition. New relationships for determination of rate constants of reactions in nonequilibrium systems will also be ....Promoting new reaction pathways with nonequilibrium flow. This project aims to develop a fundamental molecular level understanding of flow-induced physical and chemical reactions in liquids. Nonequilibrium molecular dynamics simulations will be used to gain insight into the mechanisms that promote reactions under shear, and how these are related to molecular structure and fluid composition. New relationships for determination of rate constants of reactions in nonequilibrium systems will also be developed and tested. It is expected that this knowledge will enhance the capacity to control and promote reactions. This is significant for advancement of many technologies, from development of new synthetic pathways and products, to design of lubricants that can withstand extreme strain rates.Read moreRead less
Enabling the design of superior healthy snack foods and beverages through innovative assessment of oral processing and mucosal film interactions. Reducing sugar and fat in foods generally leads to products that are perceived as less flavoursome and appealing. A significant contributor to this is the interaction of foods and beverages with oral mucosal substrates, which play a key role in perceptual processes that drive unacceptable mouthfeel sensations. This project seeks to develop and use oral ....Enabling the design of superior healthy snack foods and beverages through innovative assessment of oral processing and mucosal film interactions. Reducing sugar and fat in foods generally leads to products that are perceived as less flavoursome and appealing. A significant contributor to this is the interaction of foods and beverages with oral mucosal substrates, which play a key role in perceptual processes that drive unacceptable mouthfeel sensations. This project seeks to develop and use oral mimetic substrates to permit objective and quantified rheological and tribological responses, imitating the underlying physics occurring during food oral processing that drive dynamic sensory responses. The project aims to enable a mechanism-based approach to minimise the amounts of fat, salt and sugar required for sensory properties that meet consumer expectations.Read moreRead less
Plant based foods: Towards sustainable and acceptable meat analogues. The project aims to address the need for engineering plant-based food products to deliver a sensory experience akin to meat. The project expects to generate new knowledge on the structural drivers for emulating meat-like texture and taste within burger products. Expected outcomes of this project include new ingredients and food characterisation methodologies, including rheology and sensory, which can be employed in rational ....Plant based foods: Towards sustainable and acceptable meat analogues. The project aims to address the need for engineering plant-based food products to deliver a sensory experience akin to meat. The project expects to generate new knowledge on the structural drivers for emulating meat-like texture and taste within burger products. Expected outcomes of this project include new ingredients and food characterisation methodologies, including rheology and sensory, which can be employed in rational food structure design. This should provide significant benefits in enhancing the consumer acceptance of plant-based foods that is required to support the rapidly growing market opportunity for them and sustainable food production.Read moreRead less
Food structure design. Food structure design. This project aims to use fundamental studies in multi-scale rheology and biotribology, surface sciences, soft matter physics and protein chemistry to develop new measurement capabilities and knowledge for rational food structure design. This research is intended to enable researchers and industry to quantify how oral processing (including saliva) transforms food during consumption, and to provide new instrumental measurements and know-how that assist ....Food structure design. Food structure design. This project aims to use fundamental studies in multi-scale rheology and biotribology, surface sciences, soft matter physics and protein chemistry to develop new measurement capabilities and knowledge for rational food structure design. This research is intended to enable researchers and industry to quantify how oral processing (including saliva) transforms food during consumption, and to provide new instrumental measurements and know-how that assists in defining sensory percepts in dairy foods and beverages such as creaminess in full, reduced or non-fat systems and grittiness in high protein systems.Read moreRead less
Engineering biomimetic lubrication with mucin. Engineering coatings for water to be an effective lubricant is a significant challenge. The project seeks to emulate how nature builds highly lubricating water-rich polymer films on biological surfaces. This is intended to be achieved by directing the self-assembly of mucin macromolecules onto polymer brushes attached to a substrate, and then cross-linking the constituents to obtain a hydrated gel-like lubricating coating. This research is expected ....Engineering biomimetic lubrication with mucin. Engineering coatings for water to be an effective lubricant is a significant challenge. The project seeks to emulate how nature builds highly lubricating water-rich polymer films on biological surfaces. This is intended to be achieved by directing the self-assembly of mucin macromolecules onto polymer brushes attached to a substrate, and then cross-linking the constituents to obtain a hydrated gel-like lubricating coating. This research is expected to provide new insights on the mechanisms by which mucin-rich fluids lubricate and protect biosurfaces, which is important to human health, nutrition and well-being. It may also lead to new discoveries for engineering surface coatings for biomaterials and nanomaterials.Read moreRead less