| About this Abstract |
| Meeting |
Materials Science & Technology 2012
|
| Symposium
|
Nanotechnology for Energy, Environment, Healthcare and Industry
|
| Presentation Title |
Phase Field Modeling of Electrochemical Transport in Nanoparticles for Medical Applications |
| Author(s) |
Jon Guyer, David Saylor, James Warren |
| On-Site Speaker (Planned) |
Jon Guyer |
| Abstract Scope |
Nano-particulate silver systems are widely used in wound dressings, surgical masks, and catheter coatings as anti-microbial agents. We have shown that a phase field model of the electrochemical interface captures behaviors including electrocapillary phenomena, differential capacitance curves that resemble experimental measurements, and non-linear kinetics consistent with the empirical Butler-Volmer relation. Although numerical constraints limit the applicability of this model to dimensions of a few nanometers, the model is capable of making predictions at precisely the spatial and temporal scale that we are interested in for studying medical applications of silver nano-particles. We will discuss the impact of particle size, solution concentration, and particle aggregation on ion release and surface charge, which not only impact the anti-microbial efficacy and system stability, but may also affect biocompatibility. Finally, we will discuss our efforts to extend the length and time scales of the model. |
| Proceedings Inclusion? |
Planned: |