A novel fluorescence spectrometer and method for the simultaneous detection of multiple-fluorophore species in a no-moving-parts, instantaneous manner is described. In the reported embodiment of the instrument, a tapered Fabry-Perot filter is used to spatially encode the fluorescence spectrum from a multiple-dye-containing test sample. Using a pseudoinverse reconstruction algorithm, we spectrally decode the particle concentration for each dye specie in the test sample. Experimental results are reported along with a theoretical treatment of the method.
We present a reproducible approach to the fabrication of super-self-aligned back-gate/double-gate n-channel and p-channel transistors with thin silicon channels and thick source/drain polysilicon regions. The device structure provides capability for scalable control of channel electrostatics, threshold variability without sacrificing source/drain series resistance, and capability of introducing strain to improve carrier transport. The separate device, circuit, and functional level back-gate access that is available through bottom interconnection also provides capability for adaptive power control and novel circuit design. Both n-channel and p-channel devices are demonstrated with the threshold tuning capability.Index Terms-Adaptive power control, back-gate/double-gate field-effect transistor (FET), buried interconnect, strained-Si channel, super-self-alignment.
A novel, interferometric, polarization-interrogating filter assembly and method for the simultaneous measurement of all four Stokes parameters across a partially polarized irradiance image in a no-moving-parts, instantaneous, highly sensitive manner is described. In the reported embodiment of the filter, two spatially varying linear retarders and a linear polarizer comprise an ortho-Babinet, polarization-interrogating (OBPI) filter. The OBPI filter uniquely encodes the incident ensemble of electromagnetic wave fronts comprising a partially polarized irradiance image in a controlled, deterministic, spatially varying manner to map the complete state of polarization across the image to local variations in a superposed interference pattern. Experimental interferograms are reported along with a numerical simulation of the method.
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