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SSS 2008-02-22

时间:2010-05-13 02:41来源:互联网 提供网友:0922013129   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 Karen Hopkin, this'll just take a minute.

On February 8th, we told you about scientists who had created a device worn over the knees that could harvest the energy you otherwise waste while walking. But if high-tech1 kneepads aren’t your style, perhaps you’d be interested in a power-producing sport shirt. Maybe something in a literal electric blue. Because in the February 14 issue of Nature, scientists from Georgia Tech describe a fabric2 that converts low-frequency vibrations3 into electricity. The material was made by weaving together zinc4 oxide5 nanowires with regular textile fibers6, although for some reason, the scientists used Kevlar as their regular textile. When the nanowires rub against one another as they would while you were wearing the garment, they generate electricity. And because the wires are so small and thin, the material is quite flexible, so it could be woven into power generating tents for soldiers or into the ultimate power tie for the busy executive. The scientists estimate that their nanoclothing puts out about 80 milliwatts of power per square meter of fabric which should be enough to operate your personal electronics. Best of all, if you buy the nanosuit made with Kevlar, you should be able to talk on your cell phone and survive getting shot.

 

Thanks for the minute for Scientific American's 60-Second Science. I'm Karen Hopkin.

 


点击收听单词发音收听单词发音  

1 high-tech high-tech     
adj.高科技的
参考例句:
  • The economy is in the upswing which makes high-tech services in more demand too.经济在蓬勃发展,这就使对高科技服务的需求量也在加大。
  • The quest of a cure for disease with high-tech has never ceased. 人们希望运用高科技治疗疾病的追求从未停止过。
2 fabric 3hezG     
n.织物,织品,布;构造,结构,组织
参考例句:
  • The fabric will spot easily.这种织品很容易玷污。
  • I don't like the pattern on the fabric.我不喜欢那块布料上的图案。
3 vibrations d94a4ca3e6fa6302ae79121ffdf03b40     
n.摆动( vibration的名词复数 );震动;感受;(偏离平衡位置的)一次性往复振动
参考例句:
  • We could feel the vibrations from the trucks passing outside. 我们可以感到外面卡车经过时的颤动。
  • I am drawn to that girl; I get good vibrations from her. 我被那女孩吸引住了,她使我产生良好的感觉。 来自《简明英汉词典》
4 zinc DfxwX     
n.锌;vt.在...上镀锌
参考例句:
  • Brass is formed by the fusion of copper and zinc.黄铜是通过铜和锌的熔合而成的。
  • Zinc is used to protect other metals from corrosion.锌被用来保护其他金属不受腐蚀。
5 oxide K4dz8     
n.氧化物
参考例句:
  • Oxide is usually seen in our daily life.在我们的日常生活中氧化物很常见。
  • How can you get rid of this oxide coating?你们该怎样除去这些氧化皮?
6 fibers 421d63991f1d1fc8826d6e71d5e15f53     
光纤( fiber的名词复数 ); (织物的)质地; 纤维,纤维物质
参考例句:
  • Thesolution of collagen-PVA was wet spined with the sodium sulfate as coagulant and collagen-PVA composite fibers were prepared. 在此基础上,以硫酸钠为凝固剂,对胶原-PVA共混溶液进行湿法纺丝,制备了胶原-PVA复合纤维。
  • Sympathetic fibers are distributed to all regions of the heart. 交感神经纤维分布于心脏的所有部分。
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