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Fluorescein Images Graphene

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EVANSTON, Ill., Dec. 28, 2009 – It’s been used to dye the Chicago River green on St. Patrick’s Day. It’s been used to find latent bloodstains at crime scenes. And now researchers at Northwestern University have used it to examine the thinnest material in the world. Materials scientists Jaemyung Kim and Jiaxing Huang of Northwestern University’s McCormick School of Engineering and Applied Science. (Photos: Northwestern University) This useful tool is the dye fluorescein, and Jiaxing Huang, assistant professor of materials science and engineering at McCormick School of Engineering and Applied...Read full article

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    Published: December 2009
    Glossary
    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...
    scanning electron microscopy
    Scanning electron microscopy (SEM) is an advanced imaging technique used in microscopy to obtain high-resolution, three-dimensional images of the surfaces of solid specimens. SEM achieves this by using a focused beam of electrons to scan the specimen's surface, resulting in detailed images with magnifications ranging from about 10x to 100,000x or higher. Key features and principles of scanning electron microscopy include: Electron beam: SEM uses an electron beam instead of visible light for...
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