A step towards an everlasting battery

Imagine a future where recharging your tablet could be as easy as typing a tweet—where portable electronic devices power themselves without ever plugging into the grid.

Pushing towards an everlasting battery
Electricity is generated as a force is applied to a piezoelectric film. Credit: Dr Daniel J. White
Researchers at RMIT University, Melbourne have assessed the capacity of piezoelectric films—thin layers that turn mechanical pressure into electricity—to do this.

The study is the first to evaluate how piezoelectric thin films, a thousandth of a millimetre thick, perform at the molecular level, precisely measuring the level of electrical voltage and current—and therefore, power—that could be generated.
Continue reading A step towards an everlasting battery

OPAL reactor fingerprints Aboriginal ochre

A Flinders University chemist is using Australia’s OPAL research reactor at Lucas Heights in Sydney to investigate ancient Aboriginal Australian society.

Using the technique called neutron activation analysis, Dr Rachel Popelka-Filcoff can “geochemically fingerprint” Aboriginal ochre pigments from different locations, archaeological sites and artefacts.

Applying nuclear power to research
Rachel Popelka-Filcoff can trace the cultural use of ochre using Australia’s research reactor. Credit: Ashton Claridge, Flinders Media
As the geochemical composition of ochre varies with location, she can correlate each sample with its site of origin, gaining information on cultural practices, travel and exchange patterns, and the relationship of Aboriginal people to the landscape. “Ochre pigments are highly significant in Aboriginal culture,” says Rachel. “Cultural expression often requires a specific pigment. Applying ochre to an object such as a spear can transform both its colour and its cultural meaning.”

Dr Roman Dronov, also from Flinders, is using the reactor to study the formation of bacterial protein layers. He is applying what he finds to constructing a new type of biosensor based on these layers and porous silicon. These highly sensitive devices can rapidly detect trace amounts of molecules, such as environmental poisons and markers of disease—a great improvement on traditional analytical methods.
Continue reading OPAL reactor fingerprints Aboriginal ochre

Is that you in the video?

Is that you in the video?
Clinton Fookes is technical director of QUT’s Airports of the Future. Credit: Queensland University of Technology (QUT).

A Queensland University of Technology (QUT) engineer is developing techniques to automatically identify people in surveillance videos and recognise their movement and behaviour.

The explosion of video surveillance to make public places safer, says Dr Clinton Fookes of the University’s School of Engineering Systems, has created a new challenge for researchers—to make sense of what cameras and computers see. So he is investigating ways to extract and interpret important information from these visual sources.

The data generated by the proliferation of surveillance cameras, as well as the countless images and videos online, he says, are impossible to intelligently use without sophisticated computer vision technology that can automatically extract information from these sources, collate and report on it in real time.

As Clinton’s work is ideally suited to improving security in public places such as airports, one of his roles is technical director of QUT’s Airports of the Future—a major research project aimed at improving the experience of passengers passing through Australia’s airports.

His research in this field could lead to new discoveries in a range of areas including human-computer interaction, security, medical imaging and robotics.

Photo: Clinton Fookes is technical director of QUT’s Airports of the Future.
Credit: QUT

School of Engineering Systems, QUT, Clinton Fookes, Tel: + 61 7 3138 2458, c.fookes@qut.edu.au, staff.qut.edu.au/staff/fookes/

No moving parts – a new kind of radio telescope

Murchison Widefield Array
The Murchison Widefield Array is one of the first telescopes with no moving parts. Credit: David Herne, ICRAR

Far outback in Western Australia, at the Murchison Radio Astronomy Observatory located on Boolardy Station, 315 km north-east of Geraldton, 32 tiles each carrying 16 dipole antennas have begun to collect scientific data on the Sun. At the same time they are providing engineering information to be used to extend the facility to a much bigger array of 512 tiles – the Murchison Widefield Array (MWA).

Continue reading No moving parts – a new kind of radio telescope

Australia’s new reactor opens

The OPAL reactor and new neutron beam facility, managed by the Australian Nuclear Science and Technology Organisation (ANSTO) in Sydney’s south, officially opens on Wednesday 18 April 2007.

Costing $400 million to build, the reactor was described by ANSTO’s Executive Director, Dr. Ian Smith as “the jewel in the crown” of Australian nuclear research.

Continue reading Australia’s new reactor opens

VESKI’s innovative fellowships deliver results

VESKI’s main initiative – to return successful Australian expatriates with outstanding skills in science, technology and design – is paying off with some inspiring work.

In 2004, VESKI’s – Victorian Endowment for Science, Knowledge and Innovation – inaugural Fellow Professor Andrew Holmes returned from Cambridge University to work in a new $100 million Bio21 Molecular Biology and Biotechnology Institute. One of the most important research areas to emerge since has been the development of cheap plastic solar cells.

Continue reading VESKI’s innovative fellowships deliver results