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Capping Two-faced Particles

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DURHAM, NC, Aug. 13, 2009 – In Roman mythology Janus, known as the god of gates, doorways, and beginnings and endings, was typically depicted as having two faces looking opposite directions. Scientists at Duke University borrowed the Roman god’s name for a unique class of miniscule particles that can be manipulated both magnetically and optically. For years, scientists have been fascinated by the tantalizing possibilities of these particles for their potential applications in electronic display devices, sensors and many other devices. However, realizing these applications requires precise control over the...Read full article

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    Published: August 2009
    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.
    nanotechnology
    The use of atoms, molecules and molecular-scale structures to enhance existing technology and develop new materials and devices. The goal of this technology is to manipulate atomic and molecular particles to create devices that are thousands of times smaller and faster than those of the current microtechnologies.
    optical tweezers
    Optical tweezers refer to a scientific instrument that uses the pressure of laser light to trap and manipulate microscopic objects, such as particles or biological cells, in three dimensions. This technique relies on the momentum transfer of photons from the laser beam to the trapped objects, creating a stable trapping potential. Optical tweezers are widely used in physics, biology, and nanotechnology for studying and manipulating tiny structures at the microscale and nanoscale levels. Key...
    photonics
    The technology of generating and harnessing light and other forms of radiant energy whose quantum unit is the photon. The science includes light emission, transmission, deflection, amplification and detection by optical components and instruments, lasers and other light sources, fiber optics, electro-optical instrumentation, related hardware and electronics, and sophisticated systems. The range of applications of photonics extends from energy generation to detection to communications and...
    Benjamin YellenbiomoleculesBiophotonicsdot-Janus particleDuke Universityelectronic display devicesJanus particlesmagnetic materialnanonanoengineeringnanotechnologyNathan JennessNews & Featuresoptical beamoptical tweezersOpticsphotonicsphotonics.comPratt School of EngineeringRandall ErbResearch & Technologyself-propelling micromachinesSensors & Detectors

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