科学60秒:这是衣服 还是智能机器人？
来源：沪江听写酷
2011-05-03 00:02
文章较难，大家听写填空即可~
____1____. I mean, really, what can it do? It can't pick up sound, or ____2____ us if something's wrong. Or can it? M.I.T. researchers say they've developed a fiber 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 structure involves a lopsided arrangement of fluorine atoms on one side and hydrogen atoms on the other. That asymmetry makes the plastic piezoelectric: it changes shape when it ____3____ an electric field.
So any electric current will then cause the fibers to ____4____. The fibers could act as a microphone or a speaker, depending on whether the vibrations were being recorded or amplified.
The clothing mic could capture speech, sure. But it could also monitor health by detecting almost ____5____ 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.”
____1____. I mean, really, what can it do? It can't pick up sound, or ____2____ us if something's wrong. Or can it? M.I.T. researchers say they've developed a fiber 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 structure involves a lopsided arrangement of fluorine atoms on one side and hydrogen atoms on the other. That asymmetry makes the plastic piezoelectric: it changes shape when it ____3____ an electric field.
So any electric current will then cause the fibers to ____4____. The fibers could act as a microphone or a speaker, depending on whether the vibrations were being recorded or amplified.
The clothing mic could capture speech, sure. But it could also monitor health by detecting almost ____5____ 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.”
Clothing is so yesterday
beep at
encounters
vibrate
imperceptible
穿衣打扮早已成为明日黄花。我是说，衣服嘛，还能变出什么花样来？它又不能接收声音，又不能在事情不对劲儿的时候发出警报。——啊？什么？它可以啊！——麻省理工学院的研究人员称他们已经开发出一种纤维，用这种纤维制成的衣服就可实现上述功能。他们的研究成果发表在《自然材料》上。
制造这种纤维的关键技术是采用了一种常用于麦克风的塑料。其特殊的分子结构在于一侧是氟原子而另一侧是氢原子的不平衡排列。这种不对称使得塑料产生压电：当它遇到电场时，形状会发生改变。
因此，任何电流都会导致纤维颤动。而颤动的纤维就可作为麦克风或扬声器，这取决于纤维震动是被录下来还是放大了。
这种“服装麦克风”当然可以录下讲话，也可通过侦测人体发出的几乎难以察觉的声音来监测穿着者的健康状况。比如血液流动的声音就能让这种衣服24小时监测血压变化。或许有一天，你的衣服会对你说：“我发现您的血压升高，请稍坐片刻。”