Accession Number:

ADA621358

Title:

Robust Nanoparticles

Descriptive Note:

Final rept. 15 Sep 2011-14 Sep 2014

Corporate Author:

MASSACHUSETTS UNIV AMHERST

Personal Author(s):

Report Date:

2015-01-21

Pagination or Media Count:

11.0

Abstract:

This project advanced the chemistry of functional nanoparticles and used these particles in advanced materials assembly for the fabrication of nanoparticle-based mesostructures. These hybrid materials possess extremely high inorganic weight fraction, yet benefit from the processibility offered by organicpolymer ligands, and the robustness resulting from ligand cross-linking post-assembly. The project developed a facile evaporative assembly method, termed flow coating, that affords nanoparticle-based ribbons that were studied for their fundamental features including 1 the scope-and-limitations of their dimensions, 2 their conductivity when employing metallic nanoparticles in the assembly, and 3 their propensity to twist into helical structures irrespective of the nanoparticle or polymer composition used in the assembly. The ribbons identified in this project exhibited force-extension behavior described by a combination of elastic and surface energies. The macroscale mechanical properties of these ribbons, along with the inherent nanoscale properties of the particles, provide tunable multi-functionality and open numerous opportunities for applications in sensing, self-healing, and mechanical reinforcement applications.

Subject Categories:

  • Polymer Chemistry
  • Miscellaneous Materials
  • Electricity and Magnetism
  • Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE