The rapid tumbling motions of gas phase molecules, such as those in the air around us, means that at any instant in time, the molecules are pointing in many different directions, and this blurs any image that may be recorded. Now, using a pair of carefully crafted femtosecond laser pulses, a team of researchers at The Open University and the National Research Council of Canada have forced molecules to line up in the same direction to "pose" for a photograph.
When combined with the ultra-fast shutter speeds such as those provided by ultrashort pulses of X-ray light produced at some of the world’s largest facilities, such as the European X-Ray Laser Project XFEL near Hamburg, which is being built to meet just this goal, this technique will allow for sharp images of isolated molecules to be recorded.
This new research “Field-free three-dimensional alignment of polyatomic molecules” is to be published in Physical Review Letters on November 3 2006.
Co-author Dr Jonathan Underwood of The Open University’s Department of Physics and Astronomy says: “This new technique means another of the barriers to understanding the science of our world has been lowered.
This technique will allow us to take photographs in the very near future from which we’ll be able to map the atomic details of molecules as they re-arrange and undergo chemical processes.”
Breakthrough with a chain of gold atoms
17.02.2017 | Universität Konstanz
New functional principle to generate the „third harmonic“
16.02.2017 | Laser Zentrum Hannover e.V.
In the field of nanoscience, an international team of physicists with participants from Konstanz has achieved a breakthrough in understanding heat transport
Cells need to repair damaged DNA in our genes to prevent the development of cancer and other diseases. Our cells therefore activate and send “repair-proteins”...
The Fraunhofer IWS Dresden and Technische Universität Dresden inaugurated their jointly operated Center for Additive Manufacturing Dresden (AMCD) with a festive ceremony on February 7, 2017. Scientists from various disciplines perform research on materials, additive manufacturing processes and innovative technologies, which build up components in a layer by layer process. This technology opens up new horizons for component design and combinations of functions. For example during fabrication, electrical conductors and sensors are already able to be additively manufactured into components. They provide information about stress conditions of a product during operation.
The 3D-printing technology, or additive manufacturing as it is often called, has long made the step out of scientific research laboratories into industrial...
Nature does amazing things with limited design materials. Grass, for example, can support its own weight, resist strong wind loads, and recover after being...
Nanometer-scale magnetic perforated grids could create new possibilities for computing. Together with international colleagues, scientists from the Helmholtz Zentrum Dresden-Rossendorf (HZDR) have shown how a cobalt grid can be reliably programmed at room temperature. In addition they discovered that for every hole ("antidot") three magnetic states can be configured. The results have been published in the journal "Scientific Reports".
Physicist Dr. Rantej Bali from the HZDR, together with scientists from Singapore and Australia, designed a special grid structure in a thin layer of cobalt in...
13.02.2017 | Event News
10.02.2017 | Event News
09.02.2017 | Event News
20.02.2017 | Materials Sciences
20.02.2017 | Health and Medicine
20.02.2017 | Health and Medicine