PREDICTING MODELING OF NANORODS/NANOWIRES SYNTHESIS

摘要：

Modeling has been prevalent,and predictive modeling is a challenge.For modeling to be predictive,it is more critical to be physics-based than to appear multiscale,although the two do not necessarily contradict each other.This presentation shows one example of predictive modeling-self-organized bifurcation during nanorods synthesis.The presentation consists of four elements: (a) discovery of a surface diffusion barrier 1,(b) conceptual design through integration of the discovery and existing knowledge,(c) test of concept using atomistic simulations 2,and (d) experimental validation.First,we reveal the large magnitude of three-dimensional Ehrlich-Schwoebel (which we so term to contrast with the conventional Ehrlich-Schwoebel) barriers.Next,we integrate this piece of physics with two other well-established pieces-geometrical shadowing and twin-to design a sell-organized branching of nanorods/nano-wires.Finally,we use atomistic simulations to complete the prediction.Upon the completion of predictive modeling,our subsequent synthesis experiments have validated the prediction.

作者: Hanchen Huang

作者单位: Rensselaer Polytechnic Institute,Troy,New York,USA

会议类型: 国际会议

会议名称: 第二届国际非均质材料力学会议(The Second International Conference on Heterogeneous Material Mechanics)

会议地点: 安徽黄山

会议语种:英文

页码: 137

在线出版日期: 2008-06-03（万方平台首次上网日期，不代表论文的发表时间）