Discovery Early Career Researcher Award - Grant ID: DE190100641
Funder
Australian Research Council
Funding Amount
$422,079.00
Summary
Brillouin microscopy for high-speed imaging of rigidity within cells. This project aims to improve the sensitivity and speed of Brillouin microscopes. Brillouin microscopes use light to measure the stiffness of samples in 3D without requiring physical access, allowing their use in inaccessible locations such as the interior of cells or within intact tissue. However, Brillouin microscopes are too slow to be used in most research. This project introduces a new approach based on different optical p ....Brillouin microscopy for high-speed imaging of rigidity within cells. This project aims to improve the sensitivity and speed of Brillouin microscopes. Brillouin microscopes use light to measure the stiffness of samples in 3D without requiring physical access, allowing their use in inaccessible locations such as the interior of cells or within intact tissue. However, Brillouin microscopes are too slow to be used in most research. This project introduces a new approach based on different optical physics that is expected to enable faster and more precise imaging. The microscope will be used to study the movement of amoeba, where it is expected to reveal the controlled stiffening and fluidising of the different regions of protoplasm believed to underlie the cell mobility.Read moreRead less
Neural mechanisms of vestibular perception in zebrafish. This project aims to understand vestibular processing by removing physical movement. The vestibular system allows us to perceive gravity and movement, but it is not understood how the brain processes information from vestibular sensors in the inner ear. This project will exert forces on the zebrafish’s inner ear with a laser, stimulating the vestibular sense. This means that the animal will experience vestibular stimuli while stationary, a ....Neural mechanisms of vestibular perception in zebrafish. This project aims to understand vestibular processing by removing physical movement. The vestibular system allows us to perceive gravity and movement, but it is not understood how the brain processes information from vestibular sensors in the inner ear. This project will exert forces on the zebrafish’s inner ear with a laser, stimulating the vestibular sense. This means that the animal will experience vestibular stimuli while stationary, allowing calcium imaging of neurons that respond to vestibular cues and optogenetics to stimulate or silence these neurons. This is expected to reveal which cells and circuits mediate vestibular perception, processing and behaviour.Read moreRead less
Trapped Ion Imaging for Biomolecular Dynamics. The functionality of large biological molecules is driven by their chemical composition and the folded shape of their active form. The higher-order structure and dynamics of nucleic acids, proteins, carbohydrates, and lipids drives the chemistry of life. Combining single molecule microscopy and trapped ion mass spectroscopy will develop a new tool for precision measurements of higher-order folding dynamics in large biomolecules. Optical techniques i ....Trapped Ion Imaging for Biomolecular Dynamics. The functionality of large biological molecules is driven by their chemical composition and the folded shape of their active form. The higher-order structure and dynamics of nucleic acids, proteins, carbohydrates, and lipids drives the chemistry of life. Combining single molecule microscopy and trapped ion mass spectroscopy will develop a new tool for precision measurements of higher-order folding dynamics in large biomolecules. Optical techniques including Förster resonance energy transfer and super-resolution imaging can register changes in shape down to the nanometer scale. The uniquely adaptable ion trap environment enables manipulation of the surrounding solvent cage, temperature, and net charge down to the single quantum level. Read moreRead less
Probe-free biophysical force and torque measurements with optical tweezers. This project aims to develop probe-free biophysical force and torque measurement methods based on optical tweezers. Many areas of research in cell biology are hampered by a lack of quantitative force measurements. This project aims to provide accurate quantitative measurements to enable in-depth understanding of forces at work during cell division, properties of blood cells and sperm motility which could generate further ....Probe-free biophysical force and torque measurements with optical tweezers. This project aims to develop probe-free biophysical force and torque measurement methods based on optical tweezers. Many areas of research in cell biology are hampered by a lack of quantitative force measurements. This project aims to provide accurate quantitative measurements to enable in-depth understanding of forces at work during cell division, properties of blood cells and sperm motility which could generate further research leading to health benefits.Read moreRead less
Securing the quantum internet with high-dimensional quantum systems. This project aims to develop experimental and theoretical tools for increasing security in the future quantum networks. This project expects to generate new knowledge in the area of quantum communication by leveraging on the properties of high-dimensional quantum systems. Expected outcomes of this project include novel protocols for quantum secret sharing that are resistant to experimental noise and an experimental implementati ....Securing the quantum internet with high-dimensional quantum systems. This project aims to develop experimental and theoretical tools for increasing security in the future quantum networks. This project expects to generate new knowledge in the area of quantum communication by leveraging on the properties of high-dimensional quantum systems. Expected outcomes of this project include novel protocols for quantum secret sharing that are resistant to experimental noise and an experimental implementation of such protocols. This should provide significant benefits to the development of the quantum internet and its security.Read moreRead less
Discovery Early Career Researcher Award - Grant ID: DE170100319
Funder
Australian Research Council
Funding Amount
$372,000.00
Summary
Fast three-dimensional imaging of neural signal propagation using light-field microscopy. This project aims to use a light-field microscope to reveal the dynamics of sustained neural activity in the brain. The brain’s neurons are highly interconnected, so neural signals can be sustained in a repeating cycle. While this may underlie tasks such as working memory, its role in information processing is unclear. Understanding information processing is vital for finding treatments for neurodegenerativ ....Fast three-dimensional imaging of neural signal propagation using light-field microscopy. This project aims to use a light-field microscope to reveal the dynamics of sustained neural activity in the brain. The brain’s neurons are highly interconnected, so neural signals can be sustained in a repeating cycle. While this may underlie tasks such as working memory, its role in information processing is unclear. Understanding information processing is vital for finding treatments for neurodegenerative disorders. To characterise this large-scale aspect of neural computation, this project measures neural activity at high speed across large numbers of neurons. This is expected to provide evidence of the nature of sustained activity which may in the future lead to treatments for neurodegenerative disorders.Read moreRead less
Neural mechanisms of water flow perception and spatial integration. This project aims to develop a novel zebrafish platform for elucidating the circuits that mediate lateral line perception. The sensory modality by which fish detect and respond to water flow is poorly understood. This project proposes a novel preparation in the zebrafish model for applying controlled water flow using microfluidics, thereby stimulating the lateral line. Because the animal remains stationary, it is possible to per ....Neural mechanisms of water flow perception and spatial integration. This project aims to develop a novel zebrafish platform for elucidating the circuits that mediate lateral line perception. The sensory modality by which fish detect and respond to water flow is poorly understood. This project proposes a novel preparation in the zebrafish model for applying controlled water flow using microfluidics, thereby stimulating the lateral line. Because the animal remains stationary, it is possible to perform whole-brain calcium imaging of cells and circuits that respond to water flow, and to use optogenetics to stimulate or silence these neurons. This will reveal the circuitry mediating flow perception, and its relationship with other senses, in a way that has been previously impossible.Read moreRead less
Linkage Infrastructure, Equipment And Facilities - Grant ID: LE110100064
Funder
Australian Research Council
Funding Amount
$150,000.00
Summary
Optically controlled containers for experiments in soft matter. Nanotechnology has a promising future in the fabrication of small machines but exactly how these machines work is far less certain as they defy fundamental, classical thermodynamics. This equipment will allow Australian researchers to probe the energy dissipation of, and the work done by, small systems, including those of single molecules, colloidal crystals and membranes.