很高兴邀请到美国NIST的郑铭研究员来我所访问并作学术报告。郑铭研究员

是单壁碳纳米管手性分离方面的领导者，他的报告题目是：Enrichment of

single-chirality carbon nanotubes using DNA-nanotube hybrid structures

摘要：DNA is the material that Nature has selected for carrying genetic

information in living cells. Carbon nanotube (CNT) is a relatively new

man-made material with potential for many technological applications. A

few years ago, we created a DNA-CNT hybrid structure that is dependent on

both the DNA sequence and the atomic structure of the encased CNT. This

finding has prompted not only theoretical exploration of the nature of the

DNA/CNT interaction, but also technological exploitation of the hybrid in

areas ranging from electronic devices to rapid DNA sequencing. In this

talk, I will show the use of DNA-CNT hybrid to solve a recalcitrant

problem in the CNT field - separation of a synthetic mixture of CNTs into

pure chirality species, and discuss structure insight we gained by

studying folding of DNA on CNTs.

References

 1. Zheng, M. et al. DNA-assisted dispersion and separation of carbon

nanotubes. Nat Mater. 2, 338-342 (2003).

2. Zheng, M. et al. Structure-based carbon nanotube sorting by

sequence-dependent DNA assembly. Science 302, 1545-1548 (2003).

3. Tu, X., Manohar, S., Jagota, A. & Zheng, M. DNA sequence motifs for

structure specific recognition and separation of carbon nanotubes  Nature

460, 250-253 (2009).

郑铭研究员简介：Ming Zheng received a B.S. and a M.S. degree in

electronics from Peking University, a M.S. degree in physics from

University of Utah, and a Ph.D. degree in chemistry from Princeton

University. He was an American Cancer Society Postdoctoral Fellow at the

US National Institutes of Health from 1996 to 2000. From 2000 to 2009, he

was a principal investigator at DuPont Central Research and Development.

In 2009, Ming Zheng joined the US National Institute of Standards and

Technology, where he is now a staff scientist.