We identify three major causes of error that arise from (1) capacitive nonlinearity at the sense electrode, (2) asymmetric electrostatic forces along sense direction at the drive electrodes, and (3) asymmetric electrostatic forces (i.e., drive-electrode capacitance) along drive direction at the drive electrodes.
A minimum contact resistance of 0.26 Ω was measured on micro-switches with 150 μm-wide drive electrodes.
The devices were formed of polystyrene with carbon fibre loaded polystyrene drive electrodes and produced using injection moulding.
Our variable capacitor with comb drive electrodes has a parabolic region that achieves roughly a 205% tuning range, then a linear region that achieves an additional 37%, making its total tuning range about 242%.
The microresonator has been selectively excited in the radial extensional and the wine glass modes by reversing the polarity of the DC bias voltage applied on selected drive electrodes around the resonant structure.
Due to the presence of the bumpers, our variable capacitor with parallel plate drive electrodes has two tuning voltage regimes: first a parabolic region that achieves roughly a 290% tuning range, then a linear region that achieves an additional 310%, making the total tuning range about 600%.
The drives are re-usable and re-loading the drive with electrodes is simple.
The feasibility of using integrated injection moulded polymer electrodes as drive and detection electrodes for performing miniaturised isotachophoresis (ITP) separations with conductivity detection has been demonstrated.
As he reports in Physical Review Letters, Dr Meier has taken Dr Parkin's idea and speeded it up to the point where it might eventually make a practical technology for computer users.Traditional hard drives employ electrodes called heads to create tiny magnetic regions, known as domains, on the surface of a plate as it spins.
The device has been fabricated in the OnSemi I3T50 0.35μm high voltage CMOS process, measures 4×4 mm2 and drives 45 electrodes: electrical measurements corroborate the functional simulations, and confirm that the data bandwidth can be significantly reduced using preloaded wavetables as is introduced in this architecture.
