What are the Measurement Techniques for Viscosity at the Nanoscale?
Measuring viscosity at the nanoscale requires specialized techniques due to the small volume of fluids involved. Some common methods include:
Microfluidics: This technique involves the manipulation of small fluid volumes through microchannels, allowing for precise measurement of viscosity. Atomic Force Microscopy (AFM): AFM can be used to measure the viscosity of thin films and small fluid samples by observing the force interactions at the nanoscale. Rheometry: Advanced rheometers can measure the viscosity of nanofluids by applying controlled shear rates and observing the response.
