Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Meet the Nano-nauts - dust swarms for planetary explortion

18.04.2007
Engineers at the University of Glasgow are designing a new breed of planetary explorers: tiny, shape-shifting devices that can be carried on the wind like dust particles but are also smart enough to communicate, fly in formation and take scientific measurements.

Smart dust particles consist of a computer chip, about a millimetre in dimension, surrounded by a polymer sheath that can be made to wrinkle or smooth out by applying a small voltage. Roughening the surface of the polymer means the drag on the smart dust particle increases and it floats higher in the air; conversely, smoothing out the surface causes the particle to sink. Simulations show that by switching between rough and smooth modes, the smart dust particles can gradually hop towards a target, even in swirling winds.

Professor John Barker, who will be describing possible applications of smart dust at the RAS National Astronomy Meeting in Preston on 18th April said, “The concept of using smart dust swarms for planetary exploration has been talked about for some time, but this is the first time anyone has looked at how it could actually be achieved. Computer chips of the size and sophistication needed to make a smart dust particle now exist and we are looking through the range of polymers available to find one that matches our requirements for high deformation using minimal voltages.”

Smart dust particles would use wireless networking to communicate with each other and form swarms. Professor Barker explains, “We envisage that most of the particles can only talk to their nearest neighbours but a few can communicate at much longer distances. In our simulations we’ve shown that a swarm of 50 smart dust particles can organise themselves into a star formation, even in turbulent wind. The ability to fly in formation means that the smart dust could form a phased array. It would then be possible to process information between the distributed computer chips and collectively beam a signal back to an orbiting spacecraft.”

In order for the smart dust to be useful in planetary exploration, they would need to carry sensors. With current technology, chemical sensors tend to be rather large for the sand-grain sized particles that could be carried by the thin Martian atmosphere. However, the atmosphere of Venus is much denser and could carry smart sensors up to a few centimetres in size. Professor Barker said, “Scientific studies could theoretically be carried out on Venus using the technology we have now. However, miniaturisation is coming on rapidly. By 2020, we should have chips that have components which are just a few nanometres across, which means our smart particles would behave more like macro-molecules diffusing through an atmosphere rather than dust grains.”

The group at Glasgow thinks it will be some years before smart dust is ready to launched into space. Professor Barker said, “We are still at an early stage, working on simulations and components. We have a lot of obstacles to overcome before we are even ready to physically test our designs. However, the potential applications of smart dust for space exploration are very exciting. Our first close-up studies of extra-solar planets could come from a smart dust swarm delivered to another solar system by ion-drive.”

Anita Heward | alfa
Further information:
http://userweb.elec.gla.ac.uk/j/jbarker/sd.html
http://www.specknet.org/about/

More articles from Physics and Astronomy:

nachricht From rocks in Colorado, evidence of a 'chaotic solar system'
23.02.2017 | University of Wisconsin-Madison

nachricht Prediction: More gas-giants will be found orbiting Sun-like stars
22.02.2017 | Carnegie Institution for Science

All articles from Physics and Astronomy >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Breakthrough with a chain of gold atoms

In the field of nanoscience, an international team of physicists with participants from Konstanz has achieved a breakthrough in understanding heat transport

In the field of nanoscience, an international team of physicists with participants from Konstanz has achieved a breakthrough in understanding heat transport

Im Focus: DNA repair: a new letter in the cell alphabet

Results reveal how discoveries may be hidden in scientific “blind spots”

Cells need to repair damaged DNA in our genes to prevent the development of cancer and other diseases. Our cells therefore activate and send “repair-proteins”...

Im Focus: Dresdner scientists print tomorrow’s world

The Fraunhofer IWS Dresden and Technische Universität Dresden inaugurated their jointly operated Center for Additive Manufacturing Dresden (AMCD) with a festive ceremony on February 7, 2017. Scientists from various disciplines perform research on materials, additive manufacturing processes and innovative technologies, which build up components in a layer by layer process. This technology opens up new horizons for component design and combinations of functions. For example during fabrication, electrical conductors and sensors are already able to be additively manufactured into components. They provide information about stress conditions of a product during operation.

The 3D-printing technology, or additive manufacturing as it is often called, has long made the step out of scientific research laboratories into industrial...

Im Focus: Mimicking nature's cellular architectures via 3-D printing

Research offers new level of control over the structure of 3-D printed materials

Nature does amazing things with limited design materials. Grass, for example, can support its own weight, resist strong wind loads, and recover after being...

Im Focus: Three Magnetic States for Each Hole

Nanometer-scale magnetic perforated grids could create new possibilities for computing. Together with international colleagues, scientists from the Helmholtz Zentrum Dresden-Rossendorf (HZDR) have shown how a cobalt grid can be reliably programmed at room temperature. In addition they discovered that for every hole ("antidot") three magnetic states can be configured. The results have been published in the journal "Scientific Reports".

Physicist Dr. Rantej Bali from the HZDR, together with scientists from Singapore and Australia, designed a special grid structure in a thin layer of cobalt in...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

Booth and panel discussion – The Lindau Nobel Laureate Meetings at the AAAS 2017 Annual Meeting

13.02.2017 | Event News

Complex Loading versus Hidden Reserves

10.02.2017 | Event News

International Conference on Crystal Growth in Freiburg

09.02.2017 | Event News

 
Latest News

Stingless bees have their nests protected by soldiers

24.02.2017 | Life Sciences

New risk factors for anxiety disorders

24.02.2017 | Life Sciences

MWC 2017: 5G Capital Berlin

24.02.2017 | Trade Fair News

VideoLinks
B2B-VideoLinks
More VideoLinks >>>