Navigation Links
Researchers find that computer components can be damaged by key manufacturing processes
Date:1/6/2014

Manufacturers of increasingly minute computer chips, transistors and other products will have to take special note of research findings at the University of Huddersfield. The implications are that a key process used to transform the properties of nanoscale materials can cause much greater damage than previously realised.

The University is home to the Electron Microscopy and Materials Analysis Research Group (EMMA), headed by Professor Stephen Donnelly. It has an advanced facility named MIAMI, which stands for Microscope and Ion Accelerators for Materials Investigation. It is used to bombard materials with ion beams and to examine the effects at the nanoscale.

During a recent experiment conducted by the team, including Research Fellow Dr Graeme Greaves, a number of gold nanorods a thousand times smaller than a human hair were irradiated with xenon atoms. They were a good subject for the experiment because nanowires or rods have a large surface area.

The findings were dramatic. "We were hoping to generate bubbles. We actually found that we were eroding the nanowires," said Dr Greaves.

And the rate of erosion measured in terms of "sputtering yield", or how many atoms come out of matter for each incoming atom was far in advance of expectations.

"The sputtering yield of a normal piece of flat gold should be of the order of 50 atoms per ion," said Dr Greaves. "In the case of rods we expected it to be greater, because the geometry is much reduced. We worked out that it should be higher by a factor of four, or something of that order. But we actually found that the greatest value measured was a sputtering yield of a thousand a factor of 20."

The results were so dramatic that the Huddersfield team sought confirmation. They asked Professor Kai Nordlund(pictured right) of the University of Helsinki to run a molecular dynamics simulation, creating a virtual gold nanorod. The Finns were able to replicate the Huddersfield findings.

Now the experiment is the subject of an article in the leading journal Physical Letters Review, of Dr Greaves is the lead author.

"The research has considerable implications, particularly for medicine," said Dr Greaves. "More and more people are working on nanostructures for practical applications. Gold nanoparticles can be used for tumour detection, the optimisation of the bio-distribution of drugs to diseased organs and a radiotherapy dose enhancer.

"Components of computer chips are very small nowadays in the order of 20 nanometres in size and getting smaller and ion beams are used to change the properties of these materials. Our research shows you must be very wary of the amount of damage that may be done."


'/>"/>

Contact: Megan Beech
m.beech@hud.ac.uk
01-484-473-053
University of Huddersfield
Source:Eurekalert  

Related biology technology :

1. York U molecular communication researchers send worlds first text message using vodka
2. Researchers split water into hydrogen, oxygen using light, nanoparticles
3. CWRU engineering researchers report nanoscale energy-efficient switching devices at IEDM 2013
4. Berkeley Lab researchers create a nonlinear light-generating zero-index metamaterial
5. Oregon researchers shed new light on solar water-splitting process
6. Infrared vision lets researchers see through -- and into -- multiple layers of graphene
7. Researchers develop technique to convert thermoelectric material into high performance electricity
8. UT Austin researchers grow large graphene crystals that have exceptional electrical properties
9. Researchers at Penn add another tool in their directed assembly toolkit
10. York researchers discover important mechanism behind nanoparticle reactivity
11. Researchers discover how retinal neurons claim the best brain connections
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Researchers find that computer components can be damaged by key manufacturing processes
(Date:11/30/2016)... BEIJING , Nov. 30, 2016 Novogene ... services and solutions with cutting edge next-generation sequencing (NGS) ... a USD $75 Million [515 Million RMB] B round ... Capital Management ( Shenzhen ) Co., Ltd. ... Innovation") and Shanghai Sigma Square Investment Center LP ("Sigma ...
(Date:11/30/2016)... 30, 2016   Merck , a leading science ... into a set of agreements with Evotec AG, whereby ... of genetic reagents such as CRISPR and shRNA libraries. ... offers an accelerated pathway to explore and identify new ... identification of new targets, a process that can be ...
(Date:11/30/2016)... NC (PRWEB) , ... November 30, 2016 , ... ... engaged in the development of a new orally administered treatment for Alzheimer’s disease ... neuroimaging results of a Phase 2a clinical trial of T3D-959 in mild to ...
(Date:11/30/2016)... ... 30, 2016 , ... ProMIS Neurosciences (“ProMIS” or the “Company”), ... today announced that all five of its validated monoclonal antibody (mAb) therapeutic candidates ... prion-like forms of Amyloid beta (Aß) in vitro. , “We previously demonstrated that ...
Breaking Biology Technology:
(Date:6/3/2016)... , June 3, 2016 ... Management) von Nepal ... und Lieferung hochsicherer geprägter Kennzeichen, einschließlich Personalisierung, ... führend in der Produktion und Implementierung von ... der Ausschreibung im Januar teilgenommen, aber Decatur ...
(Date:6/2/2016)... June 2, 2016   The Weather Company , an ... Ads, an industry-first capability in which consumers will be able ... to ask questions via voice or text and receive relevant ... Marketers have long sought an advertising solution ... can be personal, relevant and valuable; and can scale across ...
(Date:6/1/2016)... , June 1, 2016 ... in Election Administration and Criminal Identification to Boost Global ... a recently released TechSci Research report, " Global Biometrics ... Region, Competition Forecast and Opportunities, 2011 - 2021", the ... billion by 2021, on account of growing security concerns ...
Breaking Biology News(10 mins):