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81 Current news of Pennsylvania State University

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Acoustic tweezers can position tiny objects

01-Sep-2009

Manipulating tiny objects like single cells or nanosized beads often requires relatively large, unwieldy equipment, but now a system that uses sound as a tiny tweezers can be small enough to place on a chip, according to Penn State engineers. "Current methods for moving individual cells or tiny ...

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Study finds higher pathogen loads in collapsed honeybee colonies

17-Aug-2009

Honeybees in colonies affected by colony collapse disorder (CCD) have higher levels of pathogens and are co-infected with a greater number of pathogens than their non-CCD counterparts, but no individual pathogen can be singled out as the cause of CCD, according to a study by an international team ...

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Wastewater produces electricity and desalinates water

10-Aug-2009

A process that cleans wastewater and generates electricity can also remove 90 percent of salt from brackish water or seawater, according to an international team of researchers from China and the U.S. "Water desalination can be accomplished without electrical energy input or high water pressure ...

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A new family of molecules for self-assembly: The carboranes

27-Mar-2009

To be useful in real-world applications, a self-assembled monolayer (SAM) of molecules on a surface must have a stable and controllable geometry. Researchers at Penn State and the Sigma-Aldrich company have found a way to control geometry and stability by making SAMs out of different ...

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Sunlight turns carbon dioxide to methane

09-Mar-2009

Dual catalysts may be the key to efficiently turning carbon dioxide and water vapor into methane and other hydrocarbons using titania nanotubes and solar power, according to Penn State researchers. "Recycling of carbon dioxide via conversion into a high energy-content fuel, suitable for use in ...

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Coating copies microscopic biological surfaces

19-Sep-2008

Someday, your car might have the metallic finish of some insects or the deep black of a butterfly's wing, and the reflectors might be patterned on the nanostructure of a fly's eyes, according to Penn State researchers who have developed a method to rapidly and inexpensively copy biological ...

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Study Finds New Properties in Non-Magnetic Materials

13-Jun-2008

A team of Penn State researchers has shown for the first time that the entire class of non-magnetic materials, such as those used in some computer components, could have considerably more uses than scientists had thought. The findings are important because they reveal previously unknown ...

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Solar cell directly splits water for hydrogen

19-Feb-2008

Plants trees and algae do it. Even some bacteria and moss do it, but scientists have had a difficult time developing methods to turn sunlight into useful fuel. Now, Penn State researchers have a proof-of-concept device that can split water and produce recoverable hydrogen. "This is a ...

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Scientists enhance Mother Nature's carbon handling mechanism

08-Nov-2007

Taking a page from Nature herself, a team of researchers developed a method to enhance removal of carbon dioxide from the atmosphere and place it in the Earth's oceans for storage. Unlike other proposed ocean sequestration processes, the new technology does not make the oceans more acid and may ...

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New Microprinting Technique Improves Nanoscale Fabrication

22-Aug-2005

Scientists at Penn State developed a new technique called microdisplacement printing, which makes possible the highly precise placement of molecules during the fabrication of nanoscale components for electronic and sensing devices. The new technique, which also extends the library of molecules ...

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