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This is Scientific American's 60-Second Science, I am Cynthia Graber. This'll just take a minute.
It might look and even feel like paper, but a new material created by scientists at MIT is designed to be an oil spill super-absorber. This technology debuted1 in a recent issue of Nature Biotechnology. Scientists designed a mesh2 of nanowires made of potassium manganese oxide3. The mesh is dried in much the same manner as cellulose is treated to make paper. Between the nanowires are tiny pores that act like capillaries4 to absorb liquid, again, like a paper towel. But the wires have a coating that repels5 water. In fact, researchers say this material can be left in water for a month and, when taken out, will still be dry. But oil can seep6 into those pores. The nanopaper can absorb twenty times its weight in oil. And it can be reused. Potassium manganese oxide is stable at high temperatures. So to clean it, researchers heat it above the boiling point of oil. The oil evaporates and the paper is clean again. About 200,000 tons of oil have polluted waters around the world in this decade alone. Scientists say this new nano oil cleaner could help sop7 up inevitable8 future spills.
Thanks for the minute for Scientific American's 60-Second Science, I am Cynthia Graber.
1 debuted | |
初次表演,初次登台(debut的过去式与过去分词形式) | |
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2 mesh | |
n.网孔,网丝,陷阱;vt.以网捕捉,啮合,匹配;vi.适合; [计算机]网络 | |
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3 oxide | |
n.氧化物 | |
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4 capillaries | |
毛细管,毛细血管( capillary的名词复数 ) | |
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5 repels | |
v.击退( repel的第三人称单数 );使厌恶;排斥;推开 | |
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6 seep | |
v.渗出,渗漏;n.渗漏,小泉,水(油)坑 | |
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7 sop | |
n.湿透的东西,懦夫;v.浸,泡,浸湿 | |
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8 inevitable | |
adj.不可避免的,必然发生的 | |
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