High Precision Fractionator for Use with Density Gradient Ultracentrifugation

详细信息    查看全文

• 作者：Yara Kadria-Vili ; Griffin Canning ; Sergei M. Bachilo ; R. Bruce Weisman
• 刊名：Analytical Chemistry
• 出版年：2014
• 出版时间：November 18, 2014
• 年：2014
• 卷：86
• 期：22
• 页码：11018-11023
• 全文大小：439K
• ISSN：1520-6882

文摘

The recent application of density gradient ultracentrifugation (DGU) for structural sorting of single-walled carbon nanotube samples has created a need for highly selective extraction of closely spaced layers formed in the centrifuged tube. We describe a novel computer-controlled device designed for this purpose. Through the use of fine needles, systematic needle motions, and slow flow rates, multiple sample layers can be aspirated under program control with minimal cross contamination between layers. The fractionator鈥檚 performance is illustrated with DGU-sorted samples of single-walled carbon nanotubes.