Macroscopic Self‐Assembly and Optical Characterization of Nanoparticle–Ligand Metamaterials
Abstract
A self‐assembled metamaterial exhibiting a positive near‐zero index of refraction at visible wavelengths is demonstrated. The metamaterial consists of thiolene‐functionalized gold nanospheres self‐assembled into macroscopic, crosslinked, monolayers. By measuring the real and imaginary parts of the phase shift of light transmitted through the self‐assembled films the effective index of refraction is determined as a function of wavelength. These findings may pave a way to simply and efficiently self‐assemble and optically characterize multifunctional, multilayer nanoparticle–ligand metamaterials.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Jan 01, 2013
- Source ID
- 10.1002/adom.201200039
Entities
People
- Banahalli R. Ratna
- Jake Fontana
- Jawad Naciri
- Ronald Rendell
Organizations
- Office of Naval Research
- United States Naval Research Laboratory