Measurement of Particle Size Distribution in Nano Colloidal Dispersions Using Electrochemical Impedance Spectroscopy

Electrochemical impedance spectroscopy, as a method for characterizing the impedance properties of materials, can be used to evaluate relative changes in particle size in nano-colloidal dispersions. By applying ultrasonic agitation for varying duration, we induce changes in particle size distribution, then measure the EIS response, including impedance magnitude and phase. The results are compared with dynamic light scattering data to validate the EIS measurements. The approach allows real-time monitoring and minimal sample handling, providing a cost-effective solution for assessing nanoparticle size distribution. This technique has potential applications in industrial processes, food, and biomedical sciences.