Showing papers by "Xihua Wang published in 2009"
Patent•
01 Apr 2009TL;DR: In this article, a programmable glucose sensor array of a relatively large number of nanoelectronic devices (e.g., semiconductor field effect devices) having control surfaces functionalized with a glucose-reactive substance and generating sensing signals indicative of sensed glucose level of a bodily fluid.
Abstract: A glucose sensor employs a programmable glucose sensor array of a relatively large number of nanoelectronic devices (e.g. semiconductor field-effect devices) having control surfaces functionalized with a glucose-reactive substance and generating sensing signals indicative of sensed glucose level of a bodily fluid. The devices are divided into sub-sets sequentially enabled over successive intervals to achieve overall sensor lifetime many times longer than the lifetime of any single device in operation.
10 citations
16 Feb 2009
TL;DR: In this article, the shape anisotropy of the apertures is utilized for polarization control of the transmitted light through the total suppression of the desired polarizations, which can not be simply explained by the presence of propagating waveguide modes.
Abstract: It has been theoretically predicted and experimentally shown that circular coaxial aperture arrays have higher transmissivities with respect to simple circular ones. This observation is mainly attributed to the propagating waveguide modes supported by the circular coaxial unit cell. In this letter, we investigate extraordinary light transmission in simple rectangular and coaxial rectangular aperture arrays through decaying TE waveguide modes at mid-infrared wavelengths. We demonstrate enhanced transmissions for the rectangular coaxial aperture arrays with respect to simple ones indicating that the enhancement of extraordinary light tranmission in coaxial structures can not be simply explained by the presence of propagating waveguide modes. Using 3-D FDTD simulations and experimental analysis of the localized plasmons at the aperture rims of the individual apertures, the nature and the enhancement of extraordinary light transmission for the coaxial apertures are shown. Shape anisotropy of the apertures is utilized for polarization control of the transmitted light through the total suppression of the desired polarizations. Depolarization ratios larger than the commercially available holographic wire grid polarizers are obtained. The reported results indicate the underlying physics of enhanced extraordinary transmission in coaxial aperture arrays is intricate and merits further scientific attention while practical applications are possible through the controlling of the aperture shapes.