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lol比赛押注APP 石墨烯贴片,防蚊新妙招? 一缕缕二氧化碳、热气和潮湿精确指导着蚊子找到我方的猎物,有点像咱们用鼻子闻味寻踪。 美国布朗大学(Brown University)的化学工程师罗伯特·赫

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石墨烯贴片,防蚊新妙招?

一缕缕二氧化碳、热气和潮湿精确指导着蚊子找到我方的猎物,有点像咱们用鼻子闻味寻踪。

美国布朗大学(Brown University)的化学工程师罗伯特·赫尔特(Robert Hurt)说:“就像咱们途经一家餐厅:咱们可能会看到图片、菜品展示,闻到饭菜香味。蚊子也会做许多事情,它们相等聪敏。”他说当蚊子离咱们越来越近后,它们致使还会去闻,去品尝。

“它们隽永觉受体,能品尝与你的汗液有关的化学物资。你的皮肤上有细菌,细菌会代谢汗液中的化合物,蚊子就能闻出来。”接下来的事专家都很明晰:蚊子会咬你。然而,赫特和共事发现了梗阻它们的新面貌:使用由单层碳原子组成的石墨烯。

赫特团队让受试者将手臂伸入尽是蚊子的盒子里。“咱们莫得理会受试者的身份,但咱们也密切参与其中。”换句话说,他既不承认也不否定我方和共事恰是受试者。

不论受试者是谁,他们的手臂上莫得保护贴时,蚊子纷涌而上,凹凸叮咬。相干词,一朝贴上石墨烯贴片……[检察全文]

Graphene Garment Blocks Blood-Sucking Skeeters

Mosquitoes are precision guided to their prey by plumes of carbon dioxide, heat and humidity. Sort of like howwefollow our noses sometimes.

“It’s like us passing a restaurant: we might look at the signs and the display case and the smell. It’s a lot of things they do. They’re very smart, unfortunately.”

Robert Hurt, a chemical engineer Brown University. As the skeeters get closer to us, he says, they also even smell and taste.

“They have gustatory receptors. They taste chemicals associated with your sweat. You have bacteria on your skin, the bacteria metabolize compounds in your sweat and the mosquitoes detect those.”

You know what happens next. The bite. But Hurt and his colleagues have discovered a novel way to block them: with graphene, the substance composed of a single layer of carbon atoms.

Hurt and his team asked volunteers to stick their arms into a box full of mosquitoes. “We don’t actually disclose who those research subjects were, but we were closely involved.” In other words, he will neither confirm nor deny that he and his colleagues were subjects.

So whoever the subjects were, when they had no skin protection, the mosquitoes swarmed and bit the skin. However, with a graphene-based patch on the skin...[full transcript]

论文信息

Castilho, C., Li, D., Liu, M., Liu, Y., Gao, H. and Hurt, R., 2019. Mosquito bite prevention through graphene barrier layers.Proceedings of the National Academy of Sciences, 116(37), pp.18304-18309.

doi:10.1073/pnas.1906612116

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