高频电信号可以无损通过石墨烯

时间：2016-03-07 05:48:11

（单词翻译:单击）

Electrical signals transmitted at high frequencies lose none of their energy when passed through the 'wonder material' graphene, a study led by Plymouth University has shown. Discovered in 2004, graphene - which measures just an atom in thickness and is around 100 times stronger than steel - has been identified as having a range of potential uses across the engineering and health sectors1.
 
Now research has shown graphene out-performs any other known material, including superconductors, when carrying high-frequency electrical signals compared to direct current, essentially2 transmitting signals without any additional energy loss.
 
And since graphene lacks band-gap, which allows electrical signals to be switched on and off using silicon3 in digital electronics, academics say it seems most applicable for applications ranging from next generation high-speed transistors4 and amplifiers for mobile phones and satellite communications to ultra-sensitive biological sensors5.
 
The study was led by Dr Shakil Awan, a Lecturer in the School of Computing6, Electronics and Mathematics at Plymouth University, alongside colleagues from Cambridge and Tohoku (Japan) Universities and Nokia Technologies (Cambridge, UK).
 
Dr Shakil Awan, Lecturer in the School of Computing, Electronics and Mathematics and the principal investigator7 in the study, said: "An accurate understanding of the electromagnetic properties of graphene over a broad range of frequencies (from direct current to over 10 GHz) has been an important quest for several groups around the world. Initial measurements gave conflicting results with theory because graphene's intrinsic properties are often masked by much larger interfering8 signals from the supporting substrate, metallic9 contacts and measurement probes. Our results for the first time not only confirm the theoretical properties of graphene but also open up many new applications of the material in high-speed electronics and bio-sensing."

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1 sectors 218ffb34fa5fb6bc1691e90cd45ad627     
n.部门( sector的名词复数 )；领域；防御地区；扇形
参考例句：
  • Berlin was divided into four sectors after the war. 战后柏林分成了4 个区。 来自《简明英汉词典》
  • Industry and agriculture are the two important sectors of the national economy. 工业和农业是国民经济的两个重要部门。 来自《现代汉英综合大词典》
2 essentially nntxw     
adv.本质上，实质上，基本上
参考例句：
  • Really great men are essentially modest.真正的伟人大都很谦虚。
  • She is an essentially selfish person.她本质上是个自私自利的人。
3 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。
4 transistors ff750796e6ff1fb40d6a8248a6485dc3     
晶体管( transistor的名词复数 )； 晶体管收音机，半导体收音机
参考例句：
  • In semiconductor receivers transistors take the place of vacuum tubes. 在半导体收音机中晶体管代替了真空管。
  • We often turn to this handbook for information on transistors. 我们常从这本手册查阅有关晶体管的资料。
5 sensors 029aee483db9ae244d7a5cb353e74602     
n.传感器，灵敏元件( sensor的名词复数 )
参考例句：
  • There were more than 2000 sensors here. 这里装有两千多个灵敏元件。 来自《简明英汉词典》
  • Significant changes have been noted where sensors were exposed to trichloride. 当传感器暴露在三氯化物中时，有很大变化。 来自辞典例句
6 computing tvBzxs     
n.计算
参考例句：
  • to work in computing 从事信息处理
  • Back in the dark ages of computing, in about 1980, they started a software company. 早在计算机尚未普及的时代（约1980年），他们就创办了软件公司。
7 investigator zRQzo     
n.研究者，调查者，审查者
参考例句：
  • He was a special investigator for the FBI.他是联邦调查局的特别调查员。
  • The investigator was able to deduce the crime and find the criminal.调查者能够推出犯罪过程并锁定罪犯。
8 interfering interfering     
adj. 妨碍的 动词interfere的现在分词
参考例句：
  • He's an interfering old busybody! 他老爱管闲事！
  • I wish my mother would stop interfering and let me make my own decisions. 我希望我母亲不再干预，让我自己拿主意。
9 metallic LCuxO     
adj.金属的；金属制的；含金属的；产金属的；像金属的
参考例句：
  • A sharp metallic note coming from the outside frightened me.外面传来尖锐铿锵的声音吓了我一跳。
  • He picked up a metallic ring last night.昨夜他捡了一个金属戒指。

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