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Crossed polarized excitation and detection has been used to improve signal-to-noise ratio in an optical nano-particle sensor exploiting guided-resonance-modes in photonic crystal membranes. The sensor can detect particles with a diameter less than 40 nm.
PZT is an ideal material for high force micromechanical actuators. However, the inherent hysteresis prevents accurate positioning. By integrating piezoresistive sensors it has been shown that the actuation of a piston-type micromirror can be improved.
We present simulations showing how light scattered by isolated particles increases by a factor 10, when they are placed in photonic crystal membranes. Exploiting this effect, single nano-particles have been detected with an optical microscope.
A highly planar, robust 2D mirror with piezoelectric actuation is presented. The mirror can be operated in a wide frequency range including static deflection. It is ideally suited for target tracking and free-space optical communication.
We present results from the MicroActive project which develops an instrument for molecular diagnostics. The instrument is first tested for patient screening for a group of viruses causing cervical cancer. Two disposable polymer chips with reagents stored on-chip are developed and will be inserted into the instrument for each patient sample analysis. The first chip will perform nucleic acid extraction...
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