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Biology, materials science get a boost from robust imaging tool
Date:8/8/2011

that must be properly aligned to function correctly. "It's a strategy that will allow us to do two things: Look at these complexes one molecule at a time, and perform experiments at short ultraviolet wavelengths to look at DNA problems," he said.

In addition, the approach should be useful to materials scientists striving to understand and harness the necessary conformation of polymers used in the production of nanoscale devices. "In biology, large molecules assemble to form very complex structures that all work together like a machine," Marcus said. "The way these nanoscale structures form and become functional is an actively pursued question."

The technique builds on earlier versions of two-dimensional (2D) optical spectroscopy that emerged in efforts to get around limitations involved in applying X-ray crystallography and nuclear magnetic resonance to such research. The previous 2D approaches depended on the detection of transmitted signals but lacked the desired sensitivity.

The new approach can be combined with single-molecule fluorescence microscopy to allow for research at the tiniest of scales to date, Marcus said. "With fluorescence, you can see and measure what happens one molecule at time. We expect this approach will allow us to look at individual molecular assemblies."


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Contact: Jim Barlow
jebarlow@uoregon.edu
541-346-3481
University of Oregon
Source:Eurekalert  

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