Archive for May, 2012

‘Self assembled’ CRANN silicon chips are cheaper, and more powerful


A team of researchers at TCD and UCC led by Professor Mick Morris have coaxed atoms to ‘self assemble’ into a microchip, as seen in this image (Credit: Mick Morris).

The public have an insatiable appetite for better laptops, and other electronic devices, but they don’t want to pay more, and ideally they want to pay less than what they paid for their last machine.

This means that the manufacturers of computer chips, such as Intel, and the producers of laptops such as Dell are facing a dilemma.

Up to now microchips that are better than before, could only be produced  using expensive engineering tools and methods.

This naturally creates upward pressure on the cost of making microchips, which, in turn, increases the upward pressure on the cost of laptops.

The manufacturers don’t want costs to start to climb for their products. They want the opposite, and to break into new markets as a result.

So, what to do?

Professor Mick Morris, a nanotechnology researcher based at the Centre for Research on Adaptive Nanostructures and Nanodevices (CRANN) at TCD and UCC, may have an answer.

Prof Morris, and his team have just shown that it is possible to manufacture silicon microchips using ‘self assembly’ methods. This involves the use of chemistry to prod groups of atoms to assemble themselves into the desired way.

The use of self-assembly to make microchips is far, far cheaper than using expensive engineering tools. There is no cutting, or other tool work required, and small groups of silicon atoms do all the work for themselves.

This provides a potential way to build future microchips with a lot more power, while also reducing manufacturing costs.

LISTEN: Interview with Mick Morris

This interview was broadcast on Science Spinning on 103.2 Dublin City FM on 17-05-2012

The Secret to Insect Success: The Cuticle


The natural material that covers the entire outer body of this grasshopper and many other insects is cuticle. (Credit: Dr Jan-Henning Dirks)

Insects have been around for hundreds of millions of years, and are found in large numbers even in the harshest climates around the world.

So, what is the secret to their success? Well, one major factor is undoubtedly the cuticle, which covers the outer body of insects, such as the grasshopper pictured here on the right.

Despite the abundance of cuticle – it is the second most common natural material on the planet – no-one had studied its engineering properties in detail.

Until now that is.

Dr Jan-Henning Dirks and Professor David Taylor at the TCD Department of Mechanical and Manufacturing Engineering have shown that cuticle is flexible, lightweight, very strong, and crack resistant.

These are properties of interest to many industries, such as airplane manufacturers, for example.

LISTEN: Interview with Jan-Henning Dirks

This interview was broadcast on Science Spinning on 103.2 Dublin City FM on 17-04-2012

TCD’s Ant Man: Dr Colby Tanner


Despite what this picture taken at Dublin Airport suggests, ants are rare in Ireland, and, experts believe, they are becoming rarer (Credit: Jen)

Ants are members of the group of social insects (insects that live together in large colonies) which includes bees and termites. They are fascinating creatures to study.

They organise their societies with precision, every individual has a clear role, they are brilliant builders, ferocious in defending their interests, and have incredible physical and sensory abilities.

Dr Colby Tanner, ant researcher based at the TCD Theoretical Ecology Group would certainly agree that ants are fascinating.

Colby has been working recently in the University of Lausanne with a group using infra-red as a way to track individual ants, in order to  find out exactly where they go and what they do, within the colony.

LISTEN: Interview with Colby Tanner

Broadcast on Science Spinning on 103.2 Dublin City FM on 26-04-2012

IQ genes identified at TCD


Scientists have long suspected a link between genes and IQ, but they have been unable to prove it – until TCD scientists, led by Professor Gary Donohoe, recently identified two genes that are important in determining a person’s IQ.

The genetic aspect of IQ is vastly more important than any environmental factors, and Prof Donohoe believes that these are the first of many genes for IQ that will be identified by scientists in coming years.

Dr Emma Rose was part of the TCD team that discovered the link between the two genes and IQ and brain size.

LISTEN: Interview with Emma Rose

Broadcast on Science Spinning on 103.2 Dublin City FM on 03-05-2012

READ: The article below was published in The Sunday Times on 29-04-2012

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