Scientists look to nature to build a better ketchup bottle

Scientists at Harvard University have turned their attention to solving one of the world's enduring problems: getting that last bit of ketchup out of the bottle. The team, led by professor Joanna Aizenberg, successfully isolated the slippery coating of carnivorous Nepenthes pitcher plants to create a material called Slippery Liquid Infused Porous Surface, which has the ability to repel liquids based on both water and oil. Aizenberg says better ketchup bottles are one of many potential uses for SLIPS. "It also repels ice and so is not prone to icing up, which would be ideal on aircraft wings or in industrial freezer units," she said.

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