Electrophoretic Deposition of Aluminum Nanoparticles through a Nanopatterned Resist
Abstract
Large-area plasmonic metasurfaces have attracted interest as potential tools for a wide range of applications, from color-changing glass to improved efficiency of solar cells. These potential applications necessitate the capability to fabricate such surfaces at scale. One potential approach to resolve this issue is to use chemically synthesized nanoparticles as the metallic elements in such a metasurface rather than traditional metallization steps such as sputtering or evaporation. This study focuses on efficient methods for driving the particles into an array and subsequent postprocessing steps to remove excess particles. Using electrophoretic deposition (EPD), nanoparticles modified to have a strong surface charge can be driven into a masking pattern on top of a conductor when a voltage is applied. Following deposition, a method for removing excess particles using a low-adhesion tape is demonstrated. While this EPD approach is not yet effective enough for scaling, it serves as a useful guide for how such depositions might be approached in the future.
Document Details
- Document Type
- Technical Report
- Publication Date
- Aug 01, 2020
- Accession Number
- AD1106194
Entities
People
- Benjamin Cerjan
- David Renard
- Mark H Griep
- Naomi J. Halas
- Stephan Link
Organizations
- Rice University