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March 17, 2021
The internet age has brought a sense of community forChinese citizens but also greater surveillance and more control for the party.
Brian Wang
In 2000, then US president Bill Clinton famously said in a speech that he was confident the rise of the internet would push China towards democracy.
“There’s no question China has been trying to crack down on the internet,” he said. “Good luck. That’s sort of like trying to nail Jell-O to the wall.”
There were 22.5 million internet users in China in early 2001. By last year, that figure had ballooned to 989 million – more than three times the entire population of the United States and exceeding the 639 million internet users in India, according to the state-run China Internet Network Information Centre.
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IMAGE: Researchers doped cobalt oxide with tin to create a more efficient electrode for use in supercapacitors. This microscopic image shows the new material on graphene film. view more
Credit: JIA ZHU/PENN STATE
A sustainable, powerful micro-supercapacitor may be on the horizon, thanks to an international collaboration of researchers from Penn State and the University of Electronic Science and Technology of China. Until now, the high-capacity, fast-charging energy storage devices have been limited by the composition of their electrodes the connections responsible for managing the flow of electrons during charging and dispensing energy. Now, researchers have developed a better material to improve connectivity while maintaining recyclability and low cost.
Wormhole Models, Killer Ferns, Invisible Squids and More Mysterious News Briefly — March 17, 2021 mysteriousuniverse.org - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from mysteriousuniverse.org Daily Mail and Mail on Sunday newspapers.
Inexpensive tin packs a big punch for the future of supercapacitors
A sustainable, powerful micro-supercapacitor may be on the horizon, thanks to an international collaboration of researchers from Penn State and the University of Electronic Science and Technology of China. Until now, the high-capacity, fast-charging energy storage devices have been limited by the composition of their electrodes the connections responsible for managing the flow of electrons during charging and dispensing energy. Now, researchers have developed a better material to improve connectivity while maintaining recyclability and low cost.
“The supercapacitor is a very powerful, energy-dense device with a fast-charging rate, in contrast to the typical battery but can we make it more powerful, faster and with a really high retention cycle?” asked Jia Zhu, corresponding author and doctoral student conducting research in the laboratory of Huanyu “Larry” Cheng, Dorothy Quiggle Career Development Profe