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Fluorescent, Magnetic Nanoparticles Aid Bioimaging

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Nanoparticles that fluoresce to enable tracking in the body can also be precisely manipulated with magnetic fields. Manipulating the particles with electromagnets is key to using them in biological research because the tiny particles could otherwise get lost in the jumble of molecules circulating within a cell, according to MIT chemistry professor Moungi Bawendi. “Without a magnetic ‘handle,’ it’s like a needle in a haystack,” he said. “But with the magnetism, you can find it easily.” A technique developed by Bawendi and colleagues...Read full article

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    Published: October 2014
    Glossary
    nano
    An SI prefix meaning one billionth (10-9). Nano can also be used to indicate the study of atoms, molecules and other structures and particles on the nanometer scale. Nano-optics (also referred to as nanophotonics), for example, is the study of how light and light-matter interactions behave on the nanometer scale. See nanophotonics.
    quantum dots
    A quantum dot is a nanoscale semiconductor structure, typically composed of materials like cadmium selenide or indium arsenide, that exhibits unique quantum mechanical properties. These properties arise from the confinement of electrons within the dot, leading to discrete energy levels, or "quantization" of energy, similar to the behavior of individual atoms or molecules. Quantum dots have a size on the order of a few nanometers and can emit or absorb photons (light) with precise wavelengths,...
    Research & TechnologynanoAmericasnanoparticlesMITMoungi BawendiOu Chenquantum dotsQDBiophotonicsImagingMicroscopyBioScan

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