Ultrasonic horn actuated microprobes based self-calibrating viscosity sensor
US9970853B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 14, 2011 |
| Grant date | May 15, 2018 |
| Priority date | — |
| Expiry date | Nov 11, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2291/02818
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An ultrasonic or acoustic viscosity sensor or viscometer is provided that can be used to accurately measure viscosity for fluid samples of less than 1 μl in volume. Methods for measuring viscosity for fluid samples of less than 1 μl in volume are also provided. The viscosity sensor and methods based thereon enable simultaneous measurement of bulk and dynamic (shear-rate dependent) viscosity of a non-Newtonian fluid. Bulk and dynamic viscosity of the non-Newtonian fluid can be measured simultaneously without separating constituents of the fluid, and thus distinguishing the effect of constituents on the viscosity. Dynamic viscosity of the non-Newtonian fluid can be estimated at varying shear rates, to study the deformability of the constituents of the fluid as a function of shear rate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.