Variable wave length laser light source of free electron with carbon nano-tube

碳纳米管自由电子变波长激光光源

• 批准号: 23651145
• 负责人: MORISAKO Akimitsu
• 金额: $ 2.58万
• 依托单位: Shinshu University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Challenging Exploratory Research
• 财政年份: 2011
• 资助国家: 日本
• 起止时间: 2011 至 2012
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-23651145/
• 关键词: 自由電子レーザー; カーボンナノチューブ; ナノカーボン; 分散技術; 垂直磁化; 発光素子; CNT; 周波数可変; 微小光源; 光源; 自由電子

Carbon nanotubes are well known for its long electron mean free path. In this research, a periodical magnetic field is applied vertical to the carbon nanotube. The possibilities of creation of coherent microwaves or light due to the interactions between electrons and the periodical magnetic field have been investigated. The fundamental of this research are aligning carbon nanotubes between the electrode and suitable design of periodical magnetic field. An easy process has been developed to align carbon nanotubes between the electrodes. Furthermore, exchange coupling between soft and hard magnetic thin film was used to creating strip domains between the electrodes. Due to the large resistance between the electrode and carbon nanotubes, coherent light could not be observed in the experiment. Future works will focus onto the minimization of the resistance between the electrode and carbon nanotubes.

碳纳米管以其长电子平均自由程而闻名。在这项研究中，垂直于碳纳米管施加周期性磁场。人们已经研究了由于电子和周期性磁场之间的相互作用而产生相干微波或光的可能性。这项研究的基础是在电极之间排列碳纳米管和适当的周期性磁场设计。已经开发出一种简单的工艺来在电极之间排列碳纳米管。此外，软磁薄膜和硬磁薄膜之间的交换耦合用于在电极之间创建带状磁畴。由于电极与碳纳米管之间的电阻较大，实验中无法观察到相干光。未来的工作将集中于电极和碳纳米管之间的电阻最小化。