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每日英語跟讀 Ep.K531: About Tech - 蟹殼再生電池與聲納裝置 Crab and lobster shells could be used to make renewable batteries

· 每日跟讀單元 Daily English

每日英語跟讀 Ep.K531: About Tech - Crab and lobster shells could be used to make renewable batteries

The researchers in Maryland have developed batteries that use a product derived from crustacean shells to store energy.


As the world transitions towards deploying green energy solutions and electric vehicles, the batteries being used for such technology also need to be eco-friendly.


Crustaceans have exoskeletons made of cells that contain chitin, a kind of polysaccharide that makes their shells hard.


Through chemical processing and adding acetic acid aqueous solution, chitin can ultimately be synthesised into a firm gel membrane and used as an electrolyte for a battery.


By combining this chitosan electrolyte with zinc, a naturally occurring metal increasingly used to make batteries that are cheap and safe, scientists were able to create a renewable battery.


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New stick-on ‘sonar’ device lets you watch your own heart beat 新黏貼聲納裝置讓你監測自己的心跳

Imagine having a watch that could live-stream your heart as it beats in your chest.


Researchers just unveiled a wearable ultrasound patch — something like a Band-Aid with sonar.


This stick-on device offers a flexible way to see deep inside the body. Ultrasound maps tissues and

fluids by recording how sound waves bounce off of them.


The new patch can work for up to 48 hours straight — even while you’re moving around a lot, like when you play a sport.


In many poorer countries, access to hospitals — and their high-power imaging machines — can be limited.


But the new device “has a huge potential” to aid people in these parts of the world, Aparna Singh, a biomedical engineer at Columbia University said.

但是哥倫比亞大學生物醫學工程師阿帕娜.辛格表示,這個新的裝置擁有巨大的潛能,能夠幫助世界上這些地區的民眾。Source article: ;

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