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Raman Scattering Sped Up for Microscopy

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Improvements to Raman spectroscopy using laser frequency combs allow multiple signals from different parts of a molecule — or even different molecules — to be monitored simultaneously using a single detector. The advance is seen as a major step toward the holy grail of real-time, label-free biomolecular imaging. For decades, biologists have attached fluorescent dye labels to certain proteins to distinguish them under a microscope. But such labels can alter the cell's function. Many molecules of interest have characteristic absorption spectra at mid-infrared wavelengths, but...Read full article

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