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:5/3/2016)... THE WOODLANDS, Texas , May 3, 2016 /PRNewswire/ ... board certified plastic surgeon in The Woodlands, ... technology that destroys 24 percent of treated fat cells ... men and woman. Close to 90 percent of Americans ... effective treatment options. Nonsurgical fat reduction procedures are a ...
(Date:5/2/2016)... (PRWEB) , ... May 02, 2016 , ... StarNet Communications ... today announced the addition of three Secure Remote Desktop modules to its flagship X-Win32 ... desktops from Linux and Unix servers to the user’s PC over encrypted SSH. , ...
(Date:4/29/2016)... , April 29, 2016 ... Transparency Market Research "Separation Systems for Commercial Biotechnology ... Trends, and Forecast 2015 - 2023", the separation ... US$ 10,665.5 Mn in 2014 and is projected ... 2015 to 2023 to reach US$ 19,227.8 Mn ...
(Date:4/28/2016)... , April 28, 2016 ... Stirling, and Brayton Cryocoolers), Service (Technical Support, Product Repairs ... Geography - Global Forecast to 2022", published by MarketsandMarkets, ... 2.94 Billion by 2022, at a CAGR of 7.29% ... market data Tables and 94 Figures spread through 159 ...
Breaking Biology Technology:
(Date:4/15/2016)... , April 15, 2016  A new ... make more accurate underwriting decisions in a fraction ... timely, competitively priced and high-value life insurance policies ... screenings. With Force Diagnostics, rapid testing ... lifestyle data readings (blood pressure, weight, pulse, BMI, ...
(Date:4/13/2016)... , April 13, 2016  IMPOWER physicians supporting Medicaid ... setting a new clinical standard in telehealth thanks to ... leveraging the higi platform, IMPOWER patients can routinely track ... and body mass index, and, when they opt in, ... convenient visit to a local retail location at no ...
(Date:3/29/2016)... 2016 LegacyXChange, Inc. (OTC: ... SelectaDNA/CSI Protect are pleased to announce our successful effort ... variety of writing instruments, ensuring athletes signatures against counterfeiting ... from athletes on LegacyXChange will be assured of ongoing ... Bill Bollander , CEO states, "By ...
Breaking Biology News(10 mins):