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Semiconductor nanowire (NW) heterostructures are increasingly important building blocks for electronic and optoelectronic devices. III-V nanowires with attention to well-controlled growth parameters, high structural quality and high optical quality NWs with unusually long recombination lifetimes can be achieved. We probe these NWs experimentally with both CW and time-resolved photoluminescence spectroscopy...
In this paper, we present the development of a new micro fiber optical sensor probe with side viewing capability for early diagnosis of cancers in upper gastrointestinal tract. The probe consists of a oblique incidence source and a collection array of microfabricated curved SU-8 waveguides for collecting spatially resolved diffuse reflectance from tissue surface. The probe has been used to measure...
In this paper, we present the design, fabrication, and testing of a new micromachined fiber optic sensor probe to conduct oblique incidence diffuse reflectance spectrometry (OIDRS) for invivo estimation of optical properties of human skins. The probe consists of three source fibers, two linear array of collection fibers, and four micromachined positioning devices for accurate alignment of the fibers...
We present the experimental characterization of micromachined electromagnetic probe using scanning Hall probe microscopy. The tested electromagnetic probe consists of a protruding sharp Permalloy needle embedded into a three-dimensional gold conducting coil, which is fabricated with a simple and straightforward micromachining process. By using a scanning Hall probe microscope, a comprehensive high-spatial...
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