👉 The Andreas fluid, named after the Greek mathematician Andreas of Rhodes, is a viscous fluid with unique properties that make it particularly interesting in the field of soft matter physics. It is a shear-thinning fluid, meaning its viscosity decreases with increasing shear rate, allowing it to flow easily under stress but retain a gel-like structure when at rest. This behavior is due to the presence of long, entangled polymer chains that align and stretch under shear, reducing internal friction. The fluid's ability to recover its shape after deformation also contributes to its characteristic properties, making it useful in various applications such as inkjet printing, biomedical devices, and the study of complex fluids.
