Chemical and Radiation Sensing
Developing novel optical fibre based chemical sensors (IVF, corossion, wine, agriculture). Optical dating with luminescence technologies and the development of innovative radiation dosimeters
- Chemical and Radiation Sensing Overview
IPAS chemical and radiation sensing research uses in-house and specialty optical fibre and unique surface coatings to develop novel optical fibre-based chemical sensing architectures.
We explore the limits of detection, including:
- Ultra-small volume samples
- Low concentrations
- Difficult to access areas
Working with end-users and industry, we develop these sensors for monitoring water quality, corrosion, wine maturation, embryos, soil nutrients, fuel degradation and explosives. We are also researching new fibre forms of radiation dosimeters for the medical, mining and defence industries.
- Chemical Sensing
Our chemical sensing research includes:
- Dip-sensors for hard to access regions including hazardous environments and in vivo
- Distributed sensors to enable information across a platform or structure
- Liquid and gas sensing techniques approaches: fluorescence, Raman and other spectroscopic techniques
- Analytes successfully sensed include hydrogen peroxide (H2O2), aluminium ions (Al3+), free SO2, and various metal ions.
In partnership with other IPAS researchers, we have developed new functional structure surfaces to enable advanced sensor functionality. We solve problems in collaboration with irrigation companies, defence organisations, embryologists and oenologists.
- Radiation Sensing
IPAS’ Radiation Sensing work focuses on the development of new radiation dosimetry tools for both fundamental research and applied applications in health, defence and industry. Examples include the development of:
- Fibre-based distributed dosimeters
- Fibre-tip sensors for use in vivo in cancer treatment.
- Environmental Luminescence laboratory
The IPAS Environmental Luminescence laboratory, now named “The Prescott Environmental Luminescence Laboratories” hosts one of the most comprehensive suite of luminescence research equipment in the world. The suite includes the world’s most sensitive TL spectrometer, a photon-counting imaging system (PCIS) developed in collaboration with ANU, state-of-the-art TL/OSL Risø readers, and specialised apparatus for the measurement of luminescence kinetics and signal stability.
We develop new forensic luminescence techniques for detection of prior exposure to ionising radiation, and conduct a wide range of collaborative luminescence dating with industry and academia.
Luminescence techniques are highly versatile: they are able to accurately measure ages from virtually the present day back to 500,000 years old, and quantify doses as low as a fraction of one day’s background radiation. Our research is advancing these techniques and further extending the applicability of luminescence analysis.