Nanofabrication of Three-Dimensional Metamaterials
Abstract
We use high-intensity femtosecond laser pulses to induce the photoreduction of metal ions through multiphoton absorption. The non-linear nature of the absorption process allows us to access the bulk of a material, thus propelling the technique to three-dimensions (3D). The non-linear nature of the interaction also allows us to create structures that are smaller than the diffraction limit of the excitation light source. The technique we use directly writes metal structures, which is different from more common femtosecond writing processes that fabricate polymer structures. During the funding period of the grant, we developed a process to direct write silver in 3D inside a polymer matrix, enabling us to create true 3D disconnected metal structures. We achieved a resolution between 200 and 300 nm. This development is a significant step towards creating 3D metallic metamaterials using femtosecond laser fabrication.
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 28, 2012
- Accession Number
- ADA581878
Entities
People
- Eric Mazur
Organizations
- Harvard College