Hydrogen Effects on Platinum Precipitate Formation in Aluminum Micropillars
Restricted (Penn State Only)
Author:
Rech, Justin
Area of Honors:
Engineering Science
Degree:
Bachelor of Science
Document Type:
Thesis
Thesis Supervisors:
Yang Yang, Thesis Supervisor Lucas Jay Passmore, Thesis Honors Advisor
Keywords:
Focused Ion Beam Young's Modulus Nanopillar
Abstract:
In nanotechnology, shape and orientation of nanomaterials is imperative in order to maintain the functionality of the material in applications. On the nanoscale, it is very common for irregularities to occur, and scientists are searching for ways to control their presence. Recently, scientists found that the introduction of hydrogen between an aluminum oxide layer and an aluminum nanopillar may enhance diffusion of aluminum atoms and allow a platinum precipitate to form without changing the shape of the aluminum oxide layer. Here we aim to understand its origin. Due to its higher elastic modulus, the oxide layer will act as a shell for the nanopillar, so the platinum can be deposited while retaining the original shape of the nanopillar. This phenomenon can be advanced through further research to apply it to other areas in nanotechnology and improve the functionality of nanomaterials in applications.
