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Mining for Quantum Dots

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HOUSTON, May 26, 2010 — Graphene, the one-atom-thick, honeycomblike form of carbon, is the material of choice for physicists on the cutting edge of materials science. Researchers mentored by Boris Yakobson, a Rice professor of mechanical engineering and materials science and of chemistry, have discovered the strategic extraction of hydrogen atoms from a two-dimensional sheet of graphane naturally opens up spaces of pure graphene that look — and act — like quantum dots. That opens up a new world of possibilities for an ever-shrinking class of nanoelectronics that depend on the highly...Read full article

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    Published: May 2010
    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,...
    Abhishek Singhadvanced opticsAir Force Research LaboratoryAmericasband gapBasic ScienceBoris Yakobsoncarbonchemical sensorscrystalline moleculesdefenseDepartment of Defense Supercomputing Resource CenterenergyEvgeni Penevfrequencies of lightgraphanegraphane matrixgraphenehydrogen absorptionhydrogen atomsindustrialLight Sourcesmagnetic fieldsmaterials sciencemedical imagingMoores Lawnanonanoelectronicsnanoengineeringnanoscale circuitryOffice of Naval ResearchOpticsquantum dotsResearch & TechnologyRice Universitysemiconducting laserssemiconductorsSensors & Detectorssolar cellsTexas

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