Dr. Tony Murphy, a chief research scientist at CSIRO, has been awarded the 2026 Australian Academy of Science's Ian Wark Medal.
This prestigious award recognizes his outstanding scientific, industrial, and environmental contributions.
Research Focus
Murphy's research spans over 37 years and focuses on thermal plasmas, one of the four fundamental states of matter. Plasmas are found in stars and have diverse applications, including welding and the destruction of hazardous chemicals.
Understanding Thermal Plasma
Plasma is a high-temperature ionized gas where both electrons and heavy species (molecules, atoms, and ions) reach temperatures typically between 10,000 to 30,000 degrees Celsius.
While solid, liquid, and gas are well-known states, plasma constitutes over 99.9% of the universe, observed in stars, interstellar mediums, lightning, and aurorae.
Applications of Thermal Plasma
Thermal plasma has practical uses such as:
- Welding: Arc plasma is utilized to melt and bond metals.
- Waste Treatment: High-temperature plasma melts and vaporizes hazardous waste materials, converting them into safe gases or glassy substances.
An example is the PLASCON (now PyroPlas®) process, developed with CSIRO, which treats ozone-depleting and greenhouse gases like CFCs.
Impact and Global Recognition
Prior to CSIRO, Dr. Murphy was a postdoctoral researcher at the Max Planck Institute for Plasma Physics in Germany. His work has included researching the destruction of ozone-depleting substances and using low-temperature plasmas for ammonia production, ozone production, and accelerating seed growth.
Companies and research groups globally utilize Dr. Murphy's plasma data sets in computational models for processes like arc welding, plasma cutting, circuit breakers, arc lamps, and plasma waste treatment.
These data sets are crucial for understanding, developing, and optimizing plasma processes.
He has authored 300 scientific papers and accumulated 10,000 citations.
Additional Accolades
In addition to the Ian Wark Medal, Dr. Murphy has received several other accolades:
- 2024 Plasma Physics Innovation Prize from the European Physical Society
- 2021 Plasma Chemistry Award from the International Plasma Chemistry Society
- 2021 Plasma Innovation Prize from the Association of Asia-Pacific Physical Societies