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by Pascal Goetgheluck/science Photo Library
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Our greeting cards are 5" x 7" in size and are produced on digital offset printers using 100 lb. paper stock. Each card is coated with a UV protectant on the outside surface which produces a semi-gloss finish. The inside of each card has a matte white finish and can be customized with your own message up to 500 characters in length. Each card comes with a white envelope for mailing or gift giving.
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Specimen preparation. Two insects being coated with gold prior to analysis with a scanning electron microscope (SEM). The coating is to improve their... more
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Specimen preparation. Two insects being coated with gold prior to analysis with a scanning electron microscope (SEM). The coating is to improve their electrical conductivity and their ability to reflect electrons and hence provide clear images. The layer of gold (5-10 nanometres thick) is deposited by a process called sputter coating. A plate (upper centre) of pure gold is positioned above the microchip within a vacuum chamber containing argon gas. An applied voltage causes ionisation of the argon with subsequent ionisation of some of the gold atoms. Gold ions stream down onto the specimen to form a uniform layer. The ion plasma causes the bright glow.
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