Featured Research

from universities, journals, and other organizations

Cold electrons to aid better design of drugs and materials

Date:
August 1, 2011
Source:
University of Melbourne
Summary:
A new source of very cold electrons will improve the quality and speed of nanoimaging for drug and materials development, to a trillionth of a second.

A new source of very cold electrons will improve the quality and speed of nanoimaging for drug and materials development, to a trillionth of a second.

Related Articles


The study published in Nature Physics August 1 was carried out by researchers from the ARC Centre of Excellence for Coherent X-ray Science (CXS), headquartered at the University of Melbourne.

Associate Professor Robert Scholten from the University's School of Physics and the CXS, said the new cold electron source offered potential advances in electron imaging at the atomic or nanoscale which will have real applications in a range of industries including health.

"Enhanced nanoimaging using this cold source will enable us to design better drugs for more targeted treatments. Having a better visibility of the structure of a cell membrane protein and how it functions will assist in more targeted drug design.

"It will also help us understand how vulnerabilities such as cracks form, when designing new materials for advanced technology such as in turbine blades for jet engines.

"Nano imaging using electron microscopy give us intricate images of the micro and nanoscale world, but conventional hot electron sources are incoherent -- like the indirect light of light bulbs versus direct laser beams.

"Depending on the target, it can take several minutes to several hours to undergo this process and the image is not very clear.'

"Our experiments have revealed that with cold electrons and our new technology, we will be able to take a snapshot of the whole sample with atomic resolution and to reduce the imaging time to a trillionth of a second," he said.

The team led by Associate Professor Scholten used lasers to cool atoms to a few millionths of a degree above absolute zero and then to extract a beam of extremely cold electrons.

Using new technology, they were able to create beams in complex shapes, and because the electrons are so very cold (about 10 degrees above absolute zero) the beam retains that shape, rather than exploding as it would for a conventional hot electron source.

"This new cold source will allow us to see dynamic processes within the sample, to understand how it functions on a more precise level," he said.

"Cold electron technology opens up a whole new world of imaging -- this study is the first to show its real potential," he said.

It is hoped the technology will be further developed in the next few years.


Story Source:

The above story is based on materials provided by University of Melbourne. Note: Materials may be edited for content and length.


Journal Reference:

  1. A. J. McCulloch, D. V. Sheludko, S. D. Saliba, S. C. Bell, M. Junker, K. A. Nugent, R. E. Scholten. Arbitrarily shaped high-coherence electron bunches from cold atoms. Nature Physics, 2011; DOI: 10.1038/nphys2052

Cite This Page:

University of Melbourne. "Cold electrons to aid better design of drugs and materials." ScienceDaily. ScienceDaily, 1 August 2011. <www.sciencedaily.com/releases/2011/08/110801095109.htm>.
University of Melbourne. (2011, August 1). Cold electrons to aid better design of drugs and materials. ScienceDaily. Retrieved November 28, 2014 from www.sciencedaily.com/releases/2011/08/110801095109.htm
University of Melbourne. "Cold electrons to aid better design of drugs and materials." ScienceDaily. www.sciencedaily.com/releases/2011/08/110801095109.htm (accessed November 28, 2014).

Share This


More From ScienceDaily



More Health & Medicine News

Friday, November 28, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Ebola Leaves Orphans Alone in Sierra Leone

Ebola Leaves Orphans Alone in Sierra Leone

AFP (Nov. 27, 2014) — The Ebola epidemic sweeping Sierra Leone is having a profound effect on the country's children, many of whom have been left without any family members to support them. Duration: 01:02 Video provided by AFP
Powered by NewsLook.com
Experimental Ebola Vaccine Shows Promise In Human Trial

Experimental Ebola Vaccine Shows Promise In Human Trial

Newsy (Nov. 27, 2014) — A recent test of a prototype Ebola vaccine generated an immune response to the disease in subjects. Video provided by Newsy
Powered by NewsLook.com
Pet Dogs to Be Used in Anti-Ageing Trial

Pet Dogs to Be Used in Anti-Ageing Trial

Reuters - Innovations Video Online (Nov. 26, 2014) — Researchers in the United States are preparing to discover whether a drug commonly used in human organ transplants can extend the lifespan and health quality of pet dogs. Video provided by Reuters
Powered by NewsLook.com
Today's Prostheses Are More Capable Than Ever

Today's Prostheses Are More Capable Than Ever

Newsy (Nov. 26, 2014) — Advances in prosthetics are making replacement body parts stronger and more lifelike than they’ve ever been. Video provided by Newsy
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
 
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:  

Breaking News:

Strange & Offbeat Stories

 

Health & Medicine

Mind & Brain

Living & Well

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:  

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile iPhone Android Web
Follow Facebook Twitter Google+
Subscribe RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins