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Dye used to study world's thinnest sheet
Evanston, Ill. (UPI) Dec 24, 2009 The world's thinnest material is being studied with a dye used to stain the Chicago River green on St. Patrick's Day, scientists in Illinois said. The dye flourescein, also used to find old blood stains at crime scenes, is being used to examine graphene, a one-atom thick sheet, Northwestern University scientists said. Graphene has the potential to be used to make low-cost carbon-based electronics that are transparent and flexible, researcher Jiaxing Huang said in a release Wednesday. Using flourescein to examine graphene and its derivatives avoids the use of expensive and time-consuming techniques such as atomic force microscopy and scanning electron microscopy. "It's a simple and dirt-cheap method that works surprisingly well in many situations," Huang said of the flourescein imaging. Huang and his team have named their technique "fluorescence quenching microscopy." Share This Article With Planet Earth
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Web glue key among 'green' adhesivesLaramie, Wyo. (UPI) Dec 24, 2009 A sticky compound in spider webs could lead to the development of a new generation of non-petroleum adhesives and glues, scientists in Wyoming said. Much research has been conducted on spider web silk, which rivals steel in strength, but comparatively little is known about the glue that coats the silk, said Omer Choresh, a microbiologist at the University of Wyoming. Studies sugg ... read more |
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