l*******o
发帖数: 2795 | 1 后生可畏
http://www.pcmag.com/article2/0,2817,2419219,00.asp
What had you accomplished by the time you were 18? California native Eesha
Khare won a $50,000 scholarship for inventing a supercapacitor that can
charge a cell phone in about 20 seconds.
The Harvard-bound teenager last week received one of two Intel Foundation
Young Scientist Awards for her work with energy-efficient storage devices.
Khare (pictured, left) developed a small device that fits inside cell phone
batteries, allowing them to charge in 20 to 30 seconds. It also has the
potential to work on car batteries.
Her invention, which weighs in just over an inch long, according to CNN,
pushed Khare to the top of the class, helping her beat about 1,600 young
scientists who competed in the Intel International Science and Engineering
Fair. Watch an excited Khare accepting her award in the video below.
The other Young Scientist Award went to 17-year-old Henry Lin, who simulated
thousands of clusters of galaxies, which "provided scientists with valuable
new data, allowing them to better understand the mysteries of astrophysics,
" Intel said.
"We support the [event] because we believe that science and math are the
foundation of innovation, which is imperative for global economic growth and
advancing society," Wendy Hawkins, executive director of the Intel
Foundation, said in a statement. "This competition encourages millions of
students worldwide every year to explore their passion for math and science
while developing solutions for global challenges."
The competition's top prize, however, went to 19-year-old Ionut Budisteanu
of Romania, who used artificial intelligence to create a viable model for a
low-cost, self-driving car. Using 3D radar and mounted cameras, he was able
to create a design for an autonomously controlled car that can detect
traffic lanes and curbs, along with the real-time position of the car. The
kicker: It would only cost $4,000.
Budisteanu received the Gordon E. Moore Award, which includes a $75,000
prize.
Additionally, more than 500 finalists received awards and prizes for their
research, including 17 "Best of Category" winners who each received $5,000;
each winner's school and the affiliated science fair they represented also
got $1,000. | a9
发帖数: 21638 | 2 阿3女的也这么能吹？
phone
simulated
valuable
astrophysics,
and
science
a
able
;
【在 l*******o 的大作中提到】
: 后生可畏
: http://www.pcmag.com/article2/0,2817,2419219,00.asp
: What had you accomplished by the time you were 18? California native Eesha
: Khare won a $50,000 scholarship for inventing a supercapacitor that can
: charge a cell phone in about 20 seconds.
: The Harvard-bound teenager last week received one of two Intel Foundation
: Young Scientist Awards for her work with energy-efficient storage devices.
: Khare (pictured, left) developed a small device that fits inside cell phone
: batteries, allowing them to charge in 20 to 30 seconds. It also has the
: potential to work on car batteries.
| l********l
发帖数: 9452 | | s******n
发帖数: 3946 | 4 http://www.zhihu.com/question/21085729
先吐槽一下新浪新闻，这种无节操媒体大家还是不要看了。新浪新闻 [0] 引用英国《
每日邮报》[1]，《每日邮报》又是引用美国 NBC 新闻网的消息 [2]，内容我都不吐槽
了，有兴趣自己去比较，就看标题吧：
[2] 的标题是 “Teen's invention could charge your phone in 20 seconds”
[1] 的标题是 “Teenager invents revolutionary device which has the potential
to charge a cell phone within just 20 SECONDS”
[0] 的标题是《美国女生发明超级充电器 20秒便可充满一部手机》
请注意加粗强调的部分。不知道新浪的编辑是英文不好还是中文不好，这语义差很多好
吧？这个发明目前还只具备这种可能性，到了新浪手上就已经变成现实了……难道穿越
到未来去了？
再来说这个发明本身。超级电容器 (supercapacitor) 不是这位小朋友发明的，而是对
于一大类电容器的统称，详见 [3] 的介绍。所有的新闻网站都没提到这个发明的细节
，搜到的唯一详细资料是一份 PDF 的项目介绍 [4]，里面提到两点：该小朋友发明的
超级电容器是用的 H-TiO2 材料，比能【specific energy, 单位重量所包含的能量】
为 20 Wh/kg。作为对比，手机使用的可充电锂离子电池的比能约为 100~265 Wh/kg [5
]，常见的貌似是 140 Wh/kg 左右。换句话说，使用该小朋友的发明作为手机电池的话
，需要使用现在七倍重量的的电池。再加上其他量产的问题，这个发明离实际的手机应
用还有很长……很长……很长……很长……的路要走。看看电池技术的历史不难看出，
美好未来还是很遥远的……
然后就要吐槽一下小朋友的不厚道了。[4] 里面提到这个项目是在加州大学圣克鲁斯分
校化学系的 Yat Li 博士的实验室里完成的。Dr. Li 的研究组 [6] 的主要方向是纳米
材料，刚好今年他们发了一篇论文 [7] 是关于 H-TiO2 超级电容的，实验结果表明他
们已经实现了比能为 59 Wh/kg 的超级电容器。对比 [4] 和 [7] 来看似乎是同样的技
术，可是小姑娘的名字并没有出现在 [7] 的作者里面？那唯一合理的解释似乎是小姑
娘在 Dr. Li 的实验室用他们的研究成果做了个暑期项目，然后拿去参赛并且获奖了…
…据说这种做法在美国的高中生里面似乎还蛮常见的……
PS. Li 的研究组清一色的中国人，有图有真相。而 [7] 的资助方竟然包括中国自然科
学基金和广东省自然科学基金……
[0]: http://news.sina.com.cn/w/2013-05-20/143527174522.shtml
[1]: http://www.dailymail.co.uk/news/article-2327021/Teenager-invents-revolutionary-device-charges-cell-phone-20-seconds.html
[2]: http://www.nbcnews.com/technology/teens-invention-could-charge-your-phone-20-seconds-1C9977955
[3]: https://en.wikipedia.org/wiki/Supercapacitor
[4]: http://www.usc.edu/CSSF//History/2013/Projects/S0912.pdf
[5]: https://en.wikipedia.org/wiki/Lithium-ion_battery
[6]: http://li.chemistry.ucsc.edu/
[7]: http://research.pbsci.ucsc.edu/chemistry/li/publications/2013_AM_25_267_272.pdf | B*********a
发帖数: 6244 | | t**t
发帖数: 27760 | 6 其实就是个大个的电解电容吧。
phone
【在 l*******o 的大作中提到】
: 后生可畏
: http://www.pcmag.com/article2/0,2817,2419219,00.asp
: What had you accomplished by the time you were 18? California native Eesha
: Khare won a $50,000 scholarship for inventing a supercapacitor that can
: charge a cell phone in about 20 seconds.
: The Harvard-bound teenager last week received one of two Intel Foundation
: Young Scientist Awards for her work with energy-efficient storage devices.
: Khare (pictured, left) developed a small device that fits inside cell phone
: batteries, allowing them to charge in 20 to 30 seconds. It also has the
: potential to work on car batteries.
| r******y
发帖数: 12263 | 7 据说引起骨骼的注意不是谷歌找她 是她找谷歌的
小姑娘生下来是好的
她爹妈在骗吧 | s******n
发帖数: 3946 | 8 关键字，阿三，女，还用说啥
【在 r******y 的大作中提到】
: 据说引起骨骼的注意不是谷歌找她 是她找谷歌的
: 小姑娘生下来是好的
: 她爹妈在骗吧
| v****e
发帖数: 10715 | 9 鳖共号称用这个给电动公汽充电了吧
【在 t**t 的大作中提到】
: 其实就是个大个的电解电容吧。
:
: phone
| t*********e
发帖数: 444 | 10 阿三从小能忽悠啊!
另外锂离子电池能多快冲满而不影响寿命关键还在电池本身. |
|
