Rheosense has introduced its Vroc-D chip, which can measure high shear rate viscosity.
The D chip allows viscosity measurement at shear rates up to 1,000,000 L/s for low viscosity liquids.
The chip is also suitable for high viscosity liquids.
For one application, inkjet ink is known to experience extreme shearing as ink is ejected from a nozzle.
The shearing is estimated to exceed 1,000,000 L/s.
It has been questioned whether ink viscosity measured at low shear rates represents the viscosity at high shear rates.
Viscosity is known to be an important parameter dictating the inkjet printing process and quality.
Such a high shearing is involved in other industry processes, for example spraying, coating and printing.
