A system for adjusting machine parameters based on a skill level of an operator comprises a personal area network -compatible electronic control module located on a machine. , at which temperature the NbO is liquid; solidifying the liquid NbO to form a body of material; and fragmenting the body to form NbO particles suitable for application as e. The filter combination comprises a plurality of filters, wherein each filter can generate a control signal and performs the signal filtering process based on the control signal. The method further includes passivating the embedded microfluidic structure by locally heating the microfluidic structure surface in a reactive atmosphere, wherein the passivated microfluidic structure is suitable for transporting a fluid. The disclosed embodiments also provide an improvement in the ANSI contrast.