Dr.Feng Ding
Institute of Textile and Clothing, Hong Kong Polytechnic University, Hong Kong, PR. China
时间：2014年6月19日上午10：00
地点：唐仲英楼A313
Abstract
Encouraged
by the dream of synthesizing carbon nanotubes (CNTs) with identical chiral indexes (n,m), the growth mechanism of CNTs has been overwhelming explored both theoretically and experimentally for nearly two decades.[1,2] I will present our research activities on this topic, including:
(i) Two important necessary conditions for CNT growth, weak tube wall-catalyst interaction and strong carbon dangling bind-catalyst interaction, were identified and vilified by both DFT calculation and MD simulations.[3,4]
(ii) Applying the traditional theory of crystal growth, detailed analysis together with ab initio calculations lead to a surprising conclusion that SWNT growth rate is proportional to the tube chiral angle.[5]
(iii) The limits of CNT growth: The study on the threshold barrier of CNT growth reveals that growing CNT at the rate of 1m/s is theoretically possible [6]; The study of defect healing in CNT growth leads to a conclusion that the synthesis of perfect CNTs up to 10-100 cm long is theoretically possible [7].
(iv) During the kinetic nucleation of CNT cap, the random addition of the last (6th) pentagon prefers a random distribution of tube chiralities. Based on this, two potential means of growing CNTs with narrow chiral angle distributions was proposed.[8] One of the was recently achieved by specific designed CVD approach [9].
References:
[1]. F Ding, et al. J. Phys. Chem. B 108, 17369 (2004).
[2]. F Ding, et al. J. Chem. Phys. 121, 2775 (2004).
[3]. F Ding, et al. Nano Lett, 8, 463 (2008)
[4]. M. A. Ribas, et al. J. Chem. Phys., 131, 224501, (2009)
[5]. F Ding, et al. PNAS 106, 2506 (2009)
[6]. QH Yuan, et al. Phys. Rev. Lett., 107, 156101, (2011)
[7]. QH Yuan, et al. Phys. Rev. Lett., 108, 245505, (2012)
[8]. ZW, Xu, et al. Submitted
[9]. F. Yang, et al. Nature, in press
Brief Bio
Feng Ding obtained his Bs, Ms and PhD degrees from Huazhong University of Science and Technology, Fudan University and Nanjing University in 1993, 1996 and 2002, respectively. Then he was a Postdoctoral Research Fellow in Gothenburg University and Chalmers University in Sweden from 2003 to 2005. From 2005, he joined Rice University as a Research Scientist until the end of 2008. In 2009, he joined the Institute of Textile and Clothing of Hong Kong Polytechnic University as an Assistant Professor. Since 2013, he was promoted as a tenured associate professor.
Dr. Ding's research interests mainly focus on the growth mechanism, properties and applications of various carbon materials (fullerene, carbon nanotubes and graphene). Dr. Ding has published about 110 SCI papers with more than 30 in top journals (IF >7), including 1 in Nature; 1 in Nat. Comm.; 3 in PNAS; 6 in PRL; 7 in JACS; 2 in Ange. Chem.--Int. Ed.; 3 in Nano Lett.; 5 ACS Nano; 3 in Adv. Mat...) and these publications have
been cited by more than 2600 times until now. The present personal h-index of Dr. Sing is 29.