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With the rapid development of high frequency and microwave technology, soft magnetic thin film with high saturation magnetization and high permeability, has been intensively studied in the several decades. In recent years, many research effort have been placed on the controlling of resonance frequency (fr)[1-3]. One of the useful ways to tuning the fr is by patterning the magnetic thin film into periodic...
This paper describes magnetic sensor technology based on the detection of Lorentz force on a micromechani-cal oscillator. Experimental results are presented based on a silicon resonator operating at 105.5 kHz with a quality factor of 13,000. Sensor operation is demonstrated using amplitude modulation (AM) and frequency modulation (FM) readout of the magnetic signal. In AM operation, the noise at the...
We present a 0.6 mm diameter, 20 μm thick epitaxially-sealed polysilicon disk resonator gyro (DRG). High Q (50,000) combined with electrostatic mode-matching and closed-loop quadrature null performed by dedicated electrode sets enables a scale-factor of 0.286 mV/(°/s) and Angle Random Walk (ARW) of 0.006 (°/s)/√Hz. Without precise control of temperature, the minimum Allan deviation is 3.29 °/hr.
We report the measurements of one-photon and two-photon interference of light scattered by two quantum dots, separated by 40 μm. We show how fringe contrasts are strongly affected by spectral diffusion.
We spectrally resolve the light scattered by a single InAs semiconductor quantum dot and analyze the relative contribution of elastic and inelastic scattering processes.
This article investigates the effect of protein adsorption induced surface stress on the resonant frequency of ultra-thin PZT membrane (~600 nm thick) based biosensors. The resonant frequencies of the mass sensitive micro-fabricated PZT biosensors should ideally decrease after external proteins are loaded; however, they are found to increase in this work. This abnormal phenomenon is studied by micro-Raman...
In this paper, we present a new method of using functionalized multi-walled carbon nanotubes (MWCNTs) to specifically detect anti-goat IgG. 3-Glycidoxypropyl-trimethoxysilane (GPTS) was immobilized onto the CNT surface to introduce epoxy ring and goat IgG was used as a biological probe. Afterwards, blockers were used to occupy the open space in the CNT surface, and finally anti-goat IgGs were detected...
A differential absorption spectroscopic system is developed for gas monitoring at sub-millimeter wavelengths. Tunable, narrowband terahertz (THz) pulse trains are generated using optical pulse trains obtained by an adjustable pulse shaping technique. By tuning the THz frequency at or away from the resonant frequency, differential data are obtained to determine the water vapor concentration. After...
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