Accession Number:

ADA415471

Title:

Fabrication and Properties of Nanolaminates Using Self-Limiting Surface Chemistry Techniques

Descriptive Note:

Final rept. 15 Jan 1999-14 Nov 2002

Corporate Author:

COLORADO UNIV AT BOULDER DEPT OF CHEMISTRY AND BIOCHEMISTRY

Personal Author(s):

Report Date:

2003-07-01

Pagination or Media Count:

21.0

Abstract:

Nanolaminates are multilayered thin film structures with very high interfacial density. These composite multilayer structures can display interesting properties that are not observed in the individual components. These special properties can be optimized by manipulating the thickness and composition of the individual nanolayers. The optimized nanolaminates may have important applications as better protective coatings and thin films with enhanced optical and electrical properties. Our research has focused on the fabrication of nanolaminates with atomic layer deposition ALD techniques based on sequential self-limiting surface chemistry. We have also concentrated on measuring the properties of nanolaminates. Our goal has been to grow and characterize metalceramic and ceramicceramic nanolaminates and to develop design rules for the construction 0 novel nanocomposite materials. We have utilized the ALD techniques that we have recently pioneered to obtain atomic layer controlled growth. We have utilized our surface chemistry for W ALD and A1203 ALD to construct WA1203 metalceramic nanolaminates. We have also used our surface chemistry for ZnO and A1203 ALD to construct ZnOA1203 ceramicceramic nanolaminates and alloys. Following the growth of these nanolaminates, we have determined structureproperty relationships for nanolaminates.

Subject Categories:

  • Physical Chemistry
  • Laminates and Composite Materials

Distribution Statement:

APPROVED FOR PUBLIC RELEASE