Fully integrated microfluidic measurement system for real-time determination of gas and liquid mixtures composition

We have designed and realised a fully integrated microfluidic measurement system for real-time determination of both flow rate and composition of gas- and liquid mixtures. The system comprises relative permittivity sensors, pressure sensors, a Coriolis flow and density sensor, a thermal flow sensor and a thermal conductivity sensor. The composition of the mixture can be calculated from the physical properties - density, viscosity, heat capacity, thermal conductivity and relative permittivity - as measured by the integrated sensors in the system.