| About this Abstract |
| Meeting |
MS&T23: Materials Science & Technology
|
| Symposium
|
Controlled Synthesis, Processing, and Applications of Structural and Functional Nanomaterials
|
| Presentation Title |
Catalyst Instability Induced Precursor Production and Growth of Si-based Nanostructures |
| Author(s) |
Shifat Us Sami, Haitao Zhang |
| On-Site Speaker (Planned) |
Haitao Zhang |
| Abstract Scope |
Vapor-liquid-solid process is the most popular mechanism in catalyst-assisted vapor phase growth of 1D micro- and nanostructures. Normally, the catalysts are employed to accommodate vapor precursors and to initiate and guide the 1D growth. We will present new catalyst functions in enhancing surface reactions of the source materials and producing vapor precursors for the growth of 1D & 2D micro- and nanostructures. Due to the catalyst instability, vapor precursors can be produced by heating solid sources at low heating temperatures. In this talk, the roles of different catalysts on the growth of Si-based micro- and nanostructures will be explored. The mechanism of catalyst instability on the precursor production will be revealed. Liquid droplets induced epitaxial growth and the properties of the deposition will be demonstrated. The new growth mechanism could be applied to promote the nanomaterial growth under less critical conditions (e.g., lower source heating and deposition growth temperatures). |