| About this Abstract |
| Meeting |
Materials Science & Technology 2020
|
| Symposium
|
Controlled Synthesis, Processing, and Applications of Structural and Functional Nanomaterials
|
| Presentation Title |
Explore Different Roles of Catalysts in the Growth of Si-based Nanostructures |
| Author(s) |
Shifat Us Sami, Samuel Bultman, Haitao Zhang |
| On-Site Speaker (Planned) |
Haitao Zhang |
| Abstract Scope |
Catalysts play an important role in the controlled growth of various nanostructures. In a conventional Vapor-liquid-solid process, catalyst particles are normally used to accommodate vapor precursors and induce the formation of one-dimensional nanostructures. However, from our recent studies, catalysts could have a new role to enhance the reactions at the solid surface and promote the formation of vapor precursors from solid sources, which is otherwise hard to be vaporized under certain experimental conditions. The different roles of different catalyst particles are sensitive to their stability and vapor pressures at different temperature. In this talk, the roles of different catalysts (e.g., Te, Cu, and Au) will be revealed on the growth of Si-based nanostructures, including SiOx nanowires and Si2Te3 2D nanolayers. The catalyst effects on the composition and morphology controls of nanostructures will be demonstrated. The mechanism could promote the nanomaterial growth under less critical conditions (e.g., lower growth temperature). |