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单壁碳纳米管的电介电泳场流量分化
Haiqing Peng1, Noe T Alvarez, Carter Kittrell
1Carbon Nanotechnology Laboratory, Richard E. Smalley Institute for Nanoscale Science and Technology, Rice University, 6100 South Main Street, Houston, TX 77005, USA.
Journal of the American Chemical Society
|June 29, 2006
概括
介电泳 场流分离成功地按类型分离了单壁碳纳米管 (SWNT). 这种方法基于其带间隙独特地丰富了半导体SWNT.
科学领域:
- 纳米技术纳米技术
- 材料科学 材料科学 材料科学
- 分析化学 分析化学
背景情况:
- 单壁碳纳米管 (SWNTs) 具有独特的电子特性.
- 根据类型对SWNT进行表征和分离对于其应用至关重要.
- 电介电泳为操纵纳米材料提供了一种潜在的方法.
研究的目的:
- 调查介电泳场流分化 (DEP-FFF) 对于分离SWNTs的有效性.
- 为了证明基于其带间隙的半导体SWNT的丰富性.
- 使用多种光谱技术来描述分离的SWNT.
主要方法:
- 在1%的SDBS溶液中悬浮SWNT.
- 使用低于1V/μm的1MHz交流电压使用DEP-FFF.
- 拉曼光谱,紫外线吸收和NIR光被用于表征.
主要成果:
- DEP-FFF成功地按类型分离了SWNT.
- 观察到半导体SWNTs的独特丰富,与它们的带隙相关.
- 光谱分析证实了SWNT类型的成功分离和表征.
结论:
- DEP-FFF是一种有效的技术,用于基于类型的SWNT的分离.
- 该方法允许选择性丰富半导体SWNTs.
- 这种方法促进了技术应用中SWNT的表征和净化.
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