Abstract: A photonic AC-DC voltage and current equivalence converter includes: a photonic chip; a weak thermal link; an isothermal region; a resistive electrode; an isothermal region photonic nanoresonator; an isothermal region waveguide; a chip photonic nanoresonator; and a chip waveguide, such that an ac voltage is determined from matching a temperature rise of the isothermal region due to a primary elevated temperature of the isothermal region when ac voltage is received by the resistive electrode.

Abstract: Shear-horizontal surface acoustic wave sensors with micro-cavities in the delay paths were studied using finite element methods. The microcavity devices are SAW delay path devices that have the delay path etched with square patterns at various wavelength dimensions and varying depths to increase the dispersion and bulk to surface wave conversion. Additionally the microcavities are filed with polystyrene to act as an inhomogeneous waveguide for further entrapment of wave energy near the device surface. The effects of micro-cavities and grooves on SAW propagation show significantly greater energy transmission than the other structures presented traditional sensors.

Abstract: Provided is a sensor which integrates a pair of substantially unidirectional surface acoustic wave (SAW) interdigital transducers (IDTs) and a thickness shear mode (TSM) electrode. The sensor provides simultaneous sensing and removal of material from the sensor's surface. The sensing aspect is accomplished through the use of the TSM electrode that is designed to operate between 2 and 100 MHz. The removal of material is accomplished using substantially unidirectional IDTs aligned on the substrate to produce acoustic waves, such as Rayleigh waves, across the entire TSM sensor active area. When liquid is added over the acoustic waves, acoustic streaming occurs, which dislodges material from the sensor's surface. The acoustic waves are designed to operate at a significantly different frequency than the sensor to prevent interference between the two.

Abstract: The present invention provides a hexagonal, delay line surface acoustic wave device fabricated on a a piezoelectric substrate, such as lithium tantalate, coated with an insulating waveguide on to which a sensing film, such as an anti-human Interleukin-6 biosensor film, is physically absorbed. The acoustic waves that propagate along the delay lines of the SAW device provide for detection of biological species along one delay line and simultaneously provide for removal of non-specifically bound protein along the remaining delay lines.