What are the Challenges in Measuring Contact Angle on Nanomaterials?
Measuring contact angles on nanomaterials poses several challenges:
1. Surface Roughness: Nanomaterials often have high surface roughness, which can complicate the accurate measurement of contact angles. Advanced imaging techniques and correction algorithms are usually required.
2. Small Sample Size: Nanomaterials are typically available in small quantities, making it difficult to perform traditional contact angle measurements. Customized setups and micro-goniometers are often employed.
3. Dynamic Nature: The surface properties of nanomaterials can change rapidly due to environmental conditions, necessitating real-time monitoring techniques.
4. Contamination: Nanomaterials are highly susceptible to contamination, which can alter the contact angle. Ensuring a clean and controlled environment is crucial for accurate measurements.
