2014 Nobel Prize In Chemistry Goes To Eric Betzig, Stefan Hell And William Moerner

Posted: Oct 8 2014, 6:03am CDT | by , in News | Also on the Geek Mind

 
2014 Nobel Prize in Chemistry goes to Eric Betzig, Stefan Hell and William Moerner
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Two Americans and one German scientist share the 2014 Nobel Prize in Chemistry.

The Royal Swedish Academy of Sciences has awarded the 2014 Nobel Prize in Chemistry to Eric Betzig, Stefan Hell and William Moerner for the development of super-resolved fluorescence microscopy.

For a long time optical microscopy was held back by a presumed limitation: that it would never obtain a better resolution than half the wavelength of light. Helped by fluorescent molecules the Nobel Laureates in Chemistry 2014 ingeniously circumvented this limitation. Their ground-breaking work has brought optical microscopy into the nanodimension.

Two separate principles are rewarded. One enables the method stimulated emission depletion (STED) microscopy, developed by Stefan Hell in 2000. Two laser beams are utilized; one stimulates fluorescent molecules to glow, another cancels out all fluorescence except for that in a nanometre-sized volume. Scanning over the sample, nanometre for nanometre, yields an image with a resolution better than Abbe’s stipulated limit.

Eric Betzig and William Moerner, working separately, laid the foundation for the second method, single-molecule microscopy. The method relies upon the possibility to turn the fluorescence of individual molecules on and off. Scientists image the same area multiple times, letting just a few interspersed molecules glow each time. Superimposing these images yields a dense super-image resolved at the nanolevel. In 2006 Eric Betzig utilized this method for the first time. Via the Nobel Prize site.

On Friday the Nobel Peace Prize will be announced.

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<a href="/latest_stories/all/all/2" rel="author">Luigi Lugmayr</a>
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