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SSS 2008-11-25

时间:2010-05-15 06:53来源:互联网 提供网友:木渐浅。   字体: [ ]
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    (单词翻译:双击或拖选)

This is Scientific American's 60-Second Science. I'm Cynthia Graber. This will just take a minute.

 

Electronics come in all shapes and sizes—but there’s been a limit on their flexibility1. Now, researchers say they’ve created electronics that can be shaped in virtually any way, including bent2, stretched and even tightly coiled. They published their results in the Proceedings3 of the National Academy of Sciences.

Silicon4 is the principal ingredient in electronics, and it’s inflexible5 and brittle6. To overcome this constraint7, the researchers first developed one-dimensional, single-crystal silicon electronics, which they reported in 2005. The crystals could be stretched without losing their properties.

Then last summer they demonstrated that they could build tiny circuits that were connected by tiny metal bridges. The final product could be bent and placed over a curved surface. Most recently, the researchers modified the bridges into an S shape. The additional step takes the flexibility further—the electronics can now be twisted into curves as well. One use could be a sensor8 on a human body. But the scientists see applications beyond the biological—they’re trying to develop flexible solar cells. Flat cells need to move to follow the sun. But a flexible cell could always receive direct rays without constant repositioning.

 

Thanks for the minute for Scientific American's 60-Second Science. I'm Cynthia Graber.
 


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1 flexibility vjPxb     
n.柔韧性,弹性,(光的)折射性,灵活性
参考例句:
  • Her great strength lies in her flexibility.她的优势在于她灵活变通。
  • The flexibility of a man's muscles will lessen as he becomes old.人老了肌肉的柔韧性将降低。
2 bent QQ8yD     
n.爱好,癖好;adj.弯的;决心的,一心的
参考例句:
  • He was fully bent upon the project.他一心扑在这项计划上。
  • We bent over backward to help them.我们尽了最大努力帮助他们。
3 proceedings Wk2zvX     
n.进程,过程,议程;诉讼(程序);公报
参考例句:
  • He was released on bail pending committal proceedings. 他交保获释正在候审。
  • to initiate legal proceedings against sb 对某人提起诉讼
4 silicon dykwJ     
n.硅(旧名矽)
参考例句:
  • This company pioneered the use of silicon chip.这家公司开创了使用硅片的方法。
  • A chip is a piece of silicon about the size of a postage stamp.芯片就是一枚邮票大小的硅片。
5 inflexible xbZz7     
adj.不可改变的,不受影响的,不屈服的
参考例句:
  • Charles was a man of settled habits and inflexible routine.查尔斯是一个恪守习惯、生活规律不容打乱的人。
  • The new plastic is completely inflexible.这种新塑料是完全不可弯曲的。
6 brittle IWizN     
adj.易碎的;脆弱的;冷淡的;(声音)尖利的
参考例句:
  • The pond was covered in a brittle layer of ice.池塘覆盖了一层易碎的冰。
  • She gave a brittle laugh.她冷淡地笑了笑。
7 constraint rYnzo     
n.(on)约束,限制;限制(或约束)性的事物
参考例句:
  • The boy felt constraint in her presence.那男孩在她面前感到局促不安。
  • The lack of capital is major constraint on activities in the informal sector.资本短缺也是影响非正规部门生产经营的一个重要制约因素。
8 sensor sz7we     
n.传感器,探测设备,感觉器(官)
参考例句:
  • The temperature sensor is enclosed in a protective well.温度传感器密封在保护套管中。
  • He plugged the sensor into a outlet.他把传感器插进电源插座。
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