Microscale Electrical Resistivity Measurements to Investigate Particle Distribution.

ABSTRACT: The functional performance of a particulate thin film depends greatly on the particle distribution that forms during drying. In situ methods for monitoring the impact of different processing parameters on the distribution of particles currently require expensive and specialized equipment. This work addresses this gap by miniaturizing a geophysical prospecting method to thin-film applications. In this method, four-electrode resistivity measurements at variable probe spacing detect changes in the vertical particle concentration profile. A heuristic colloidal drying model describes the particle distribution during drying in terms of the relative effects of Brownian diffusion, sedimentation, and evaporation. For sedimentation- and evaporation-dominated drying, the film is modeled as two strati

SUBMITTER: Baburoglu E 

PROVIDER: S-EPMC11755783 | biostudies-literature | 2025 Jan

REPOSITORIES: biostudies-literature