Structural control and local optical property of carbon nanotube adsorbed on the substrates

基底上吸附碳纳米管的结构控制和局域光学性质

• 批准号: 23750004
• 负责人: KATANO Satoshi
• 金额: $ 3万
• 依托单位: Tohoku University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Young Scientists (B)
• 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-23750004/
• 关键词: 走査トンネル顕微鏡; カーボンナノチューブ; 局所発光; 走査トンネル顕微鏡発光分光; ナノマニピュレーション

Optical properties of carbon nanotubes (CNTs) are currently the focus of intense study in relation to the miniaturization of electronic devices. In order to develop electronics based on the CNT, the nano-scale analysis and control of the individual CNT are indispensable. Here, we used scanning tunneling microscopy (STM) to create an atomic-scale defect on the CNT chain. Furthermore, the optical property of the artificial defect formed on CNT has been discussed using the STM tip-induced light emission (STM-LE) method. The dry contact transfer (DCT) method was used to deposit CNTs on the substrates without exposing the sample to air. We have developed this method in order to increase the density of CNT on the substrate. The artificial defect was created on the CNT by positioning the STM tip above the CNT followed by applying the voltage pulse. The light emitted from the SWCNT and the defect was found to be relatively weak compared with that from Au. Moreover, the intense peak observed in the STM-LE spectrum of the intact CNT is shifted to higher energy when the STM-LE was obtained at the defect site of CNT. This would be ascribed to the change in the electronic states of CNT, which was induced by the STM tip.

碳纳米管的光学性质是当前电子器件小型化研究的热点。为了开发基于碳纳米管的电子学，对单个碳纳米管的纳米级分析和控制是必不可少的。在这里，我们使用扫描隧道显微镜（STM）在碳纳米管链上创建了一个原子尺度的缺陷。此外，利用STM尖端诱导光发射（STM- le）方法讨论了碳纳米管上人工缺陷的光学性质。采用干接触转移（DCT）方法在不将样品暴露于空气的情况下将CNTs沉积在衬底上。我们开发这种方法是为了增加碳纳米管在衬底上的密度。通过将STM尖端置于碳纳米管上方，然后施加电压脉冲，在碳纳米管上产生人工缺陷。与Au相比，swcnts和缺陷发出的光相对较弱。此外，当在碳纳米管缺陷处获得STM-LE时，在完整碳纳米管的STM-LE光谱中观察到的强峰转移到更高的能量。这将归因于碳纳米管的电子状态的变化，这是由STM尖端引起的。

项目成果

Light Emission from Single-walled Carbon Nanotube on Au(111) induced by Scanning Tunneling Microscope

扫描隧道显微镜诱导 Au(111) 上单壁碳纳米管的发光

• 发表时间: 2012
• 作者: S. Katano;and Y. Uehara
• 通讯作者: and Y. Uehara

Orbital-selective single molecule reactions on a metal surface studied by low-temperature scanning tunneling microscopy

低温扫描隧道显微镜研究金属表面轨道选择性单分子反应

• 发表时间: 2013
• 期刊: Chem. Commun
• 作者: S. Katano;Y. Kim;M. Trenary;M. Kawai
• 通讯作者: M. Kawai

走査トンネル顕微鏡発光分光による単一原子・分子が有するナノ物性の探索

使用扫描隧道显微镜发射光谱探索单个原子和分子的纳米物理性质

• 发表时间: 2011
• 期刊: 応用物理
• 作者: 菅野 学;小野由香莉;河野裕彦;藤村勇一;片野諭,上原洋一
• 通讯作者: 片野諭,上原洋一

Vibrational Excitation of a Single Molecule via Scanning Tunneling Microscope Light Emission Process

通过扫描隧道显微镜光发射过程振动激发单分子

• 发表时间: 2012
• 作者: S. Katano;T. Yamaga;W. Iida;and Y. Uehara
• 通讯作者: and Y. Uehara

プリズム結合型走査トンネル顕微鏡発光分光の空間分解能

棱镜耦合扫描隧道显微镜发射光谱的空间分辨率

• 发表时间: 2011
• 作者: Yoshihiro Furukawa;Tsubasa Otake;Takato Ishiguro;Hiromoto Nakazawa and Takeshi Kakegawa;Ryuzo Nakanishi;飯田航,J. Ahamed,片野諭,上原洋一
• 通讯作者: 飯田航,J. Ahamed,片野諭,上原洋一