Light microscopy trailblazers win Nobel Prize in Chemistry 2014

Oct. 8, 2014
Three light microscopy pioneers—Eric Betzig, Stefan W. Hell, and William E. Moerner—have been awarded the Nobel Prize in Chemistry 2014 for two separate achievements in breaking the optical diffraction limit, which enables better resolution (>0.2 µm) than half the wavelength of light.

Three light microscopy pioneers—Eric Betzig, Stefan W. Hell, and William E. Moerner—have been awarded the Nobel Prize in Chemistry 2014 for two separate achievements in breaking the optical diffraction limit, which enables better resolution (>0.2 µm) than half the wavelength of light. With the help of fluorescent molecules, the prizewinners were each able to circumvent this limitation.

Related: Nobel Prize honors super-resolution optical microscopy

Hell developed the stimulated emission depletion (STED) microscopy method in 2000, which uses two laser beams—one stimulates fluorescent molecules to glow while another cancels out all fluorescence, except for that in a nanometer-sized volume. Scanning over the sample, nanometer for nanometer, yields an image with a resolution better than the diffraction limit.

The vimentin network of a neuron is revealed by confocal (outer) and nanoscale-resolution STED (inner part) modalities. The STED image shows single filaments that appear in the confocal reference as blurs. (STED recording described in D.E. Wildanger et al., Opt. Exp., 16, 9614–9621 [2008]; image courtesy of Stefan W. Hell)

Betzig and 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 can image the same area multiple times, letting just a few interspersed molecules glow each time. Superimposing these images yields a dense super-resolution image. In 2006, Betzig utilized this method for the first time.

Both methods are part of what has become known as nanoscopy, which allows scientists to visualize the pathways of individual molecules inside living cells. They can see how molecules create synapses between nerve cells in the brain; track proteins involved in Parkinson's, Alzheimer's, and Huntington's diseases as they aggregate; and follow individual proteins in fertilized eggs as these divide into embryos.

For more information, please visit www.nobelprize.org/nobel_prizes/chemistry/laureates/2014.

-----

Follow us on Twitter, 'like' us on Facebook, connect with us on Google+, and join our group on LinkedIn

Subscribe now to BioOptics World magazine; it's free!

Sponsored Recommendations

March 31, 2025
Enhance your remote sensing capabilities with Chroma's precision-engineered optical filters, designed for applications such as environmental monitoring, geospatial mapping, and...
March 31, 2025
Designed for compatibility with a wide range of systems, Chroma's UV filters are engineered to feature high transmission, superior out-of-band blocking, steep edge transitions...
March 31, 2025
Discover strategies to balance component performance and system design, reducing development time and costs while maximizing efficiency.
March 31, 2025
Filter accessories including cubes, sliders, and rings, designed to enhance the performance and versatility of optical systems. These components ensure precise alignment and stability...

Voice your opinion!

To join the conversation, and become an exclusive member of Laser Focus World, create an account today!