Controlled Growth of One-dimensional Functional Nanomaterials for Energy Applications: Synthesis and Mechanism

Prof. Haitao Zhang

Mechanical Engineering and Engineering Science Department

University of North Carolina at Charlotte

Abstract:

With novel properties resulting from their nanoscale dimensions and high aspect ratio, one-dimensional (1D) functional nanomaterials have attracted extensive research attention in recent years. In this talk, two different approaches will be presented for the controlled growth of different 1D functional nanostructures: (1) add-on direct writing process and (2) vapor phase chemical deposition. For the direct writing process, femtosecond laser induced chemical vapor deposition (LCVD) of 1D metal nanogratings for the applications in nanoplasmonics will be discussed. A new growth mechanism of subwavelength self-assembly has been proposed. As for the vapor phase deposition, examples of 1D nanostructures of transition metal oxides for the applications of nanoscale smart devices will be presented with a focus on the new vapor-liquid-solid (VLS) growth modes using alkaline metal-based compound catalysts. With the better understanding of the growth mechanisms, controlled growth of 1D nanomaterials can be realized with tunable properties and enhanced device performance.     

About the Speaker:

Haitao Zhang obtained his B.S. (1997) and M.S. (2000) degrees in Materials Science from Fudan University, China. He received his Ph.D. degree in Materials Science and Engineering from Northwestern University in 2005. He worked as a Postdoc Fellow, Teaching Associate, and Assistant Research Professor in the Center for Optoelectronics and Optical Communications and the Mechanical Engineering and Engineering Science (MEES) Department at the University of North Carolina at Charlotte (UNC Charlotte), respectively. Haitao Zhang started his current Assistant Professor position in the MEES Department at UNC Charlotte in 2013. His research interests are in the area of thin films and nanostructures of functional materials for energy related applications, covering from material synthesis and characterization, property measurement, to device fabrication.

时间：2015-5-19星期二下午1：30-2：30

地点：光学楼525教室