Movement of atoms viewed at 100 times higher than previous resolution

May 06, 2005

A paper published in Nature (5 May 2005), by scientists at the Universities of Sheffield and Warwick and the European Synchrotron Radiation Facility, describes how experts have used X-rays to see structures in unprecedented detail at the atomic scale. The technique is 100 times more sensitive than any other method, and has the potential to allow scientists to improve things like data storage, healthcare sensors and security systems.

Prof Mike Gibbs, of the Department of Engineering Materials at the University of Sheffield explains, “We have known for some time that when certain magnetic materials are exposed to a magnetic field they lengthen or contract slightly. However, we still don’t have a detailed understanding”.

“This new technique uses X rays to look at the movement of atoms with unprecedented resolution; 100 times better than ever achieved before.”

“Once we can look at atom positions in this way, we will get a much better idea about the atomic structures of a range of materials, meaning that we will be able refine our understanding of how structures and materials are made up. This should lead to improvements in a wide range of technologies in the future.”

Dr. Robert Pettifer, of the University of Warwick says, “To improve a technique by two orders of magnitude means that phenomena can now be investigated which produce subtle changes in the local atomic environment. For example, the ways atoms respond to temperature, electric field and pressure as well as the magnetic field investigated in our paper can now be investigated. Movements comparable to the size of a nucleus can now be resolved. The technique will be especially valuable for materials which are not easily investigated by more conventional techniques such as glasses and thin films.

“We can see applications in such diverse things such as computer disks, domestic refrigerators, and understanding the Earth’s core.”

Source: University of Sheffield

Explore further: Entanglement on a chip: Breakthrough promises secure communications and faster computers

add to favorites email to friend print save as pdf

Related Stories

Recommended for you

New portable vacuum standard

45 minutes ago

A novel Portable Vacuum Standard (PVS) has been added to the roster of NIST's Standard Reference Instruments (SRI). It is now available for purchase as part of NIST's ongoing commitment to disseminate measurement ...

Hybrid memory device for superconducting computing

1 hour ago

A team of NIST scientists has devised and demonstrated a novel nanoscale memory technology for superconducting computing that could hasten the advent of an urgently awaited, low-energy alternative to power-hungry conventional ...

Prototype for first traceable PET-MR phantom

1 hour ago

As cancer diagnostic tools, a new class of imagers – which combines positron-emission tomography (PET) with magnetic resonance imaging (MR or MRI) – has shown promise in the few years since these hybrid ...

User comments : 0

Please sign in to add a comment. Registration is free, and takes less than a minute. Read more

Click here to reset your password.
Sign in to get notified via email when new comments are made.