Journal
ACS NANO
Volume 3, Issue 6, Pages 1564-1572Publisher
AMER CHEMICAL SOC
DOI: 10.1021/nn900239w
Keywords
layer-by-layer assembly; exponential growth; consolidation; hierarchical structuring; polyurethane
Categories
Funding
- U.S. Office of Naval Research [NO0014-06-1-0473]
- Fannie and John Hertz Foundation
- European Union [MOIF-CT-2006039636]
- National Science Foundation (NSF) [DMR-0320740, DMR-0420785]
Ask authors/readers for more resources
Layer-by-layer assembly (LBL) can generate unique materials with high degrees of nanoscale organization and excellent mechanical, electrical, and optical properties. The typical nanometer scale thicknesses restrict their utility to thin films and coatings. Preparation of macroscale nanocomposites will indicate a paradigm change in the practice of LBL, materials manufacturing, and multiscale organization of nanocomponents. Such materials were made in this study via consolidation of individual LBL sheets from polyurethane. Substantial enhancement of mechanical properties after consolidation was observed. The resulting laminates are homogeneous, transparent, and highly ductile and display nearly 3 x higher strength and toughness than their components. Hierarchically organized composites combining structural features from 1 to 1000 000 nm at six different levels of dimensionality with a high degree of structural control at every level can be obtained. The functionality of the resulting fluorescent sandwiches of different colors makes possible mechanical deformation imaging with submicrometer resolution in real time and 3D capabilities.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available