Scientists have achieved a record light conversion efficiency of 8.2 percent in solvent-free dye-sensitized solar cells. This breakthrough in efficiency without the use of volatile organic solvents ...
CORRECTION: This story was updated on May 29, 2015, to clarify the form of chromium used in leather processing. Turning animal hides into the supple, rich-hued leather in shoes, handbags, coats, and ...
In laboratory tests, the filters worked effectively with common solvents such as ethanol, methanol and acetone. They maintained stability under pressures up to 10 bar—around 10 times the pressure in a ...
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