About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Characterization of Minerals, Metals and Materials 2026 - In-Situ Characterization Techniques
|
| Presentation Title |
Standardizing Microcontact EIS: Best Practices and Noise Mitigation for Heterogeneous Ionic Conductors |
| Author(s) |
Christopher Nyborg, Oliver Johnson |
| On-Site Speaker (Planned) |
Christopher Nyborg |
| Abstract Scope |
Electrochemical Impedance Spectroscopy (EIS) is frequently employed to characterize the ionic conductivity of electrochemical systems. Traditionally these measurements are made on a macro scale across the entire electrochemical system. However, to characterize heterogenous materials, localized microscale EIS measurements are often necessary. These measurements are often used across local defects to determine their contribution to the effective conductivity. While microcontact measurements have been employed before, previous studies often acknowledge the difficulty of this technique; however, few publications provide detailed methods for achieving quality microcontact-EIS results. In this talk we identify critical sources of noise and artifacts that must be controlled and present best practices for obtaining successful microcontact-EIS measurements, based on our own systematic study and a review of previous publications. The results of this work will lower the barrier to entry for researchers hoping to employ localized microcontact-EIS and expand the accessibility beyond the labs that pioneered this specialized technique. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Characterization, Ceramics, Other |