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Living cells probed without harm

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Ashley N. Rice, [email protected]

Exploring the dynamics of living cells without harming them – the holy grail of biological research – just got easier with a new class of light-emitting probes small enough to be injected into individual cells. Stanford University engineers in the Nanoscale and Quantum Photonics Lab directed by electrical engineering professor Jelena Vuckovic are the first to demonstrate that sophisticated light resonators can be inserted inside cells without damaging them, transforming how biologists study and influence living cells. The nanobeam – only 20 µm x 200 nm x 500 nm...Read full article

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    Published: April 2013
    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,...
    Americasbiological cellsbiomoleculesBiophotonicsBioScangallium arsenideGary ShambatJelena Vuckoviclight emitting probesLight SourcesMicroscopynanonanobeamsneedlelike probeNewsquantum dotsreal-time sensingSanjiv Sam GambhirSensors & Detectorssingle cellsStanford UniversityLEDs

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