Surface Charge Determination

The surface charge of nanoparticles is a critical parameter that influences their stability, aggregation behavior, and interactions with biological systems and surfaces. In applications ranging from drug delivery to environmental remediation, understanding the surface charge can help in tailoring nanoparticles for specific functionalities. Surface charge plays a key role in determining the dispersion stability of nanoparticles in solvents, controlling their specific interactions with cells and targeted biomolecules or receptors, and influencing their cellular uptake, biodistribution, and toxicity. As nanoparticle technology continues to advance, accurate measurement of their surface charge becomes increasingly significant in both research and industrial applications.

Nanoparticles Surface Charge Determination Techniques

STEMart's surface charge determination services employ state-of-the-art techniques to measure the electrokinetic properties of nanoparticles accurately.

• Zeta Potential Analysis

Zeta Potential analysis is based on the measurement of the potential difference between the dispersing medium and the stationary layer of fluid attached to dispersed nanoparticles. It provides valuable insights into the stability of nanoparticle suspensions. The Zeta Potential method is widely recognized for its high sensitivity and quick turnaround time, making it ideal for routine quality control and stability assessment of various types of nanoparticles, including metallic, polymeric, and lipid-based nanoparticles.

• Electrophoretic Mobility (EPM)

EPM focuses on the movement of charged particles in an electric field, allowing for detailed insights into their charge characteristics. This method can be applied to a broad range of nanoparticle samples, from nanoparticles used in biomedical applications to those utilized in catalysis.

STEMart provides a reliable measurement of surface charge of a wide range of nanoparticle types, including metallic, polymeric, and biological nanoparticles. with high sensitivity and quick turnaround time. For more information about our nanoparticles surface charge determination service, please contact us.