Advanced Combustion Diagnostics of Al-Polymer Nanoenergetic Systems using Plasmonic and Photonic Crystal Grating Microchips
Abstract
The goal of the project is to establish a synergy between nanoenergetic materials and plasmonic gratings to probe the initiation and combustion science of Al-polymer nanoenergetic films. During the quarter, following studies were performed: Two Al nanoparticles on gratings was simulated using FDTD method showing e-field enhancement inside the particles while single Al nanoparticles showed e-field enhancement at the grating/Al NP interface. Simulation will be performed on large aggregates of multiple Al nanoparticles. 1) Al nanoparticles were examined by two different heating methods: rapid heating by camera-flash and slow heating in a furnace(N2). The rapid heating caused sudden rupture of alumina shell and flow of melted Al resulting in the formation of small (< 25 nm) Al/Alumina particles, while the slow heating resulted in sintering. Study of Al/Nitrocellulose showed Al NPs reduced the photobleaching of dyes. This effect will be utilized for dye-based temperature study as minimal photobleaching will be a key factor for fluorescence-based sensors to measure the localized heating effects. 2) COMSOL software was purchased/installed. The Al disk simulation by laser heating showed the capability of the software for simulating photothermal effect.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Sep 11, 2018
- Source ID
- W911NF1510136
Entities
People
- Shubhra Gangopadhyay
Organizations
- Army Contracting Command
- United States Army
- University of Missouri