SSS 2010-07-15
时间：2019-01-08 作者：英语课 分类：Scientific American(七)月
Clothing is so yesterday. I mean, really, what can it do? It can’t pick up sound, or beep at us if something’s wrong. Or can it? M.I.T. researchers say they’ve developed a fiber 1 that would allow clothing to eventually do those things. Their study is in the journal Nature Materials.
A big key to the fiber is a plastic commonly used in microphones. Its particular molecular 2 structure involves a lopsided arrangement of fluorine atoms on one side and hydrogen atoms on the other. That asymmetry 3 makes the plastic piezoelectric: it changes shape when it encounters an electric field.
So any electric current will then cause the fibers 4 to vibrate. The fibers could act as a microphone or a speaker, depending on whether the vibrations 5 were being recorded or amplified 6.
The clothing mic could capture speech, sure. But it could also monitor health by detecting almost imperceptible sounds from the body. Sounds like blood flow, which could make a shirt a 24-hour blood-pressure monitor. So maybe someday, your clothes will say: “I detect a rise in blood pressure. Please sit down. Machine wash me…”
Thanks for the minute for Scientific American’s 60-Second Science. I’m Cynthia Graber.
"Only non-chlorine bleach 7 should be used when needed. Tumble me dry ... "
- The basic structural unit of yarn is the fiber.纤维是纱的基本结构单元。
- The material must be free of fiber clumps.这种材料必须无纤维块。
- The research will provide direct insight into molecular mechanisms.这项研究将使人能够直接地了解分子的机理。
- For the pressure to become zero, molecular bombardment must cease.当压强趋近于零时，分子的碰撞就停止了。
- These bands must introduce longitudinal asymmetry in the planetary albedo.这些云带必定引起行星反照率的经向不对称性。
- In any event the asymmetry is clear enough.总之，不对称是非常明显的。
- 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。
- 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》
- He amplified on his remarks with drawings and figures. 他用图表详细地解释了他的话。
- He amplified the whole course of the incident. 他详述了事件的全过程。