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Shine On: Avalanching Nanoparticles Break Barriers to Imaging Cells in Real Time

1 month ago   |   By News Center

From left: Experimental images of thulium-doped avalanching nanoparticles separated by 300 nanometers; at right, simulations of the same material. (Credit: Berkeley Lab and Columbia Engineering)
Since the earliest microscopes, scientists have been on a quest to build instruments with finer and finer resolution to image a cell's proteins - the tiny machines that keep cells, and us, running. But to succeed, they need to overcome the diffraction limit, a fundamental property of light that long prevented optical microscopes from bringing into focus anything smaller than half the wavelength of...
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