日韩一级二级一区二区_超级国产人人偷人人干_日本日本乱码伦视频在线_亚洲性视频日韩性视频

最近，美國佐治亞理工學(xué)院工程師開發(fā)出一種光學(xué)整流天線，能把光直接轉(zhuǎn)變成直流電。研究人員認為，這一成果有望提供一種無需制冷的光檢測新技術(shù)，也能收集廢熱轉(zhuǎn)化成電力，并最終成為利用太陽能的一條新途徑。



該光學(xué)整流天線能在5℃到77℃的溫度下工作，是以碳納米管作為天線，捕獲陽光或其他光源。當(dāng)光波撞擊納米管，產(chǎn)生的振蕩電荷會通過整流 器，整流器以千兆赫茲的頻率開關(guān)，產(chǎn)生微小的直流電。雖然目前設(shè)備的效率只有1％，但數(shù)十億整流天線排成陣列，就能產(chǎn)生強大電流。



整流天線開發(fā)于上世紀(jì)六七十年代，一般在10微米左右的波長范圍工作，而新的整流天線進入到可見光范圍，要求天線和整流二極管足夠小，并能 極快地捕獲電磁振蕩。該校喬治·伍德拉夫機械工程學(xué)院副教授巴拉圖德·科拉解釋說：“整流天線本質(zhì)上是一個天線配上一個二極管，但到了可見光范圍，意味著 用納米天線配上一個金屬—絕緣—金屬二極管。天線與二極管之間離得越近，效率就越高。所以，理想的結(jié)構(gòu)是把天線用作二極管中的金屬——這就是我們造的結(jié) 構(gòu)�！�

http://cqdx.newsyc.com/dxbzl/20151016/13621.html

http://cqdx.newsyc.com/dxbzl/20151016/13637.html

http://cqdx.newsyc.com/dxbzl/20151016/13653.html

http://cqdx.newsyc.com/dxbzl/20151016/13670.html

http://cqdx.newsyc.com/dxbzl/20151016/13685.html

http://cqdx.newsyc.com/dxbzl/20151016/13896.html

http://cqdx.newsyc.com/dxbzl/20151016/13880.html

http://cqdx.newsyc.com/dxbzl/20151016/13863.html

http://cqdx.newsyc.com/dxbzl/20151016/13842.html

http://cqdx.newsyc.com/dxbzl/20151016/13830.html

http://cqdx.newsyc.com/dxbzl/20151016/13810.html

http://cqdx.newsyc.com/dxbzl/20151016/13769.html

http://cqdx.newsyc.com/dxbzl/20151016/13747.html

http://cqdx.newsyc.com/dxbzl/20151016/13731.html

http://cqdx.newsyc.com/dxbzl/20151016/13715.html

http://cqdx.newsyc.com/dxbzl/20151016/13700.html

http://cqdx.newsyc.com/dxbyw/20151016/13912.html

http://cqdx.newsyc.com/dxbyw/20151016/13895.html

http://cqdx.newsyc.com/dxbyw/20151016/13879.html

http://cqdx.newsyc.com/dxbyw/20151016/13862.html

http://cqdx.newsyc.com/dxbyw/20151016/13843.html

http://cqdx.newsyc.com/dxbyw/20151016/13831.html

http://cqdx.newsyc.com/dxbyw/20151016/13807.html

http://cqdx.newsyc.com/dxbyw/20151016/13772.html

http://cqdx.newsyc.com/dxbyw/20151016/13743.html

http://cqdx.newsyc.com/dxbyw/20151016/13727.html

http://cqdx.newsyc.com/dxbyw/20151016/13711.html

http://cqdx.newsyc.com/dxbyw/20151016/13695.html

http://cqdx.newsyc.com/dxbyw/20151016/13680.html

http://cqdx.newsyc.com/dxbyw/20151016/13664.html

http://cqdx.newsyc.com/dxbyw/20151016/13648.html

http://cqdx.newsyc.com/dxbyw/20151016/13630.html

http://cqdx.newsyc.com/dxbyw/20151015/13613.html

http://cqdx.newsyc.com/dxbyw/20151015/13593.html

http://cqdx.newsyc.com/dxbyw/20151015/13575.html

http://cqdx.newsyc.com/dxbyw/20151015/13559.html

http://cqdx.newsyc.com/dxbzz/20151016/13921.html

http://cqdx.newsyc.com/dxbzz/20151016/13899.html

http://cqdx.newsyc.com/dxbzz/20151016/13882.html

http://cqdx.newsyc.com/dxbzz/20151016/13865.html

http://cqdx.newsyc.com/dxbzz/20151016/13848.html

http://cqdx.newsyc.com/dxbzz/20151016/13832.html

http://cqdx.newsyc.com/dxbzz/20151016/13811.html

http://cqdx.newsyc.com/dxbzz/20151016/13787.html

http://cqdx.newsyc.com/dxbzz/20151016/13765.html

http://cqdx.newsyc.com/dxbzz/20151016/13749.html

http://cqdx.newsyc.com/dxbzz/20151016/13734.html

http://cqdx.newsyc.com/dxbzz/20151016/13718.html

http://cqdx.newsyc.com/dxbzz/20151016/13703.html

http://cqdx.newsyc.com/dxbzz/20151016/13688.html

http://cqdx.newsyc.com/dxbzz/20151016/13671.html

http://cqdx.newsyc.com/dxbzz/20151016/13655.html

http://cqdx.newsyc.com/dxbzz/20151016/13639.html

http://cqdx.newsyc.com/dxbzz/20151016/13624.html