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.”
Unraveling the nature of 'whistlers' from space in the lab
15.08.2018 | American Institute of Physics
Early opaque universe linked to galaxy scarcity
15.08.2018 | University of California - Riverside
Scientists at the University of California, Los Angeles present new research on a curious cosmic phenomenon known as "whistlers" -- very low frequency packets...
Scientists develop first tool to use machine learning methods to compute flow around interactively designable 3D objects. Tool will be presented at this year’s prestigious SIGGRAPH conference.
When engineers or designers want to test the aerodynamic properties of the newly designed shape of a car, airplane, or other object, they would normally model...
Researchers from TU Graz and their industry partners have unveiled a world first: the prototype of a robot-controlled, high-speed combined charging system (CCS) for electric vehicles that enables series charging of cars in various parking positions.
Global demand for electric vehicles is forecast to rise sharply: by 2025, the number of new vehicle registrations is expected to reach 25 million per year....
Proteins must be folded correctly to fulfill their molecular functions in cells. Molecular assistants called chaperones help proteins exploit their inbuilt folding potential and reach the correct three-dimensional structure. Researchers at the Max Planck Institute of Biochemistry (MPIB) have demonstrated that actin, the most abundant protein in higher developed cells, does not have the inbuilt potential to fold and instead requires special assistance to fold into its active state. The chaperone TRiC uses a previously undescribed mechanism to perform actin folding. The study was recently published in the journal Cell.
Actin is the most abundant protein in highly developed cells and has diverse functions in processes like cell stabilization, cell division and muscle...
Scientists have discovered that the electrical resistance of a copper-oxide compound depends on the magnetic field in a very unusual way -- a finding that could help direct the search for materials that can perfectly conduct electricity at room temperatur
What happens when really powerful magnets--capable of producing magnetic fields nearly two million times stronger than Earth's--are applied to materials that...
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