Development of optical means for chirality sorting of single-wall carbon nanotubes

本计画的目的是发展一种基于光辐射力的单壁碳奈米管手性分选的光学方法。研制了一种基于激光捕获系统和可调谐连续波激光的拉曼/近红外光致发光光谱技术相结合的光学显微镜系统。除了通过光辐射力进行手性分选外，还通过强激光的照射对单壁碳纳米管进行手性选择性光漂白。在此基础上，提出了一种利用连续和飞秒脉冲激光同时激发碳纳米管聚集和破坏的有效手性分选方法。

The purpose of this project was to develop an optical means of chirality sorting of single-wall carbon nanotubes based on optical radiation force. An optical microscope system based on a combination of a laser trapping system and Raman/ near infrared photoluminescence spectroscopy with a tunable CW laser was developed. In addition to the chirality sorting by optical radiation force, chirality-selective photobleaching of single-wall carbon nanotubes by an irradiation of intense laser light. Based on these results, an effective chirality sorting method by a concurrent excitation of aggregation and destruction of carbon nanotubes by means of CW and femtosecond pulsed laser light was proposed.