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We present the first proposal to detect both particle position and velocity based on the electrical measurement of particle transit time across uneven inter-gap electrodes. Compared to the previous methods, the present detector provides higher integrability for chip-based systems and achieves higher measurement stability robust to particle size variation. The position uncertainty of polystyrene particles...
We present a new micromechanical tunable capacitor using parallel interconnection of digital actuators with different unit displacements, capable to accomplish a high-precision tuning in practical RF communication. We design, fabricate, and test this digital-to-analog tunable capacitor with 4-bit digital actuators with driving voltage of 25 V. The present digital-to-analog tunable capacitor shows...
We present a new class of the protein concentration detector based on the mechanical stiffness measurement of protein-receptor layers in a squeezed nanogap. Compared to the previous protein size detector, the present device reduces the distortion and uncertainty in the displacement measurement by adding an actuated nanogap and reference electrodes. Compared to the conventional protein detectors based...
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