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Morphology- and orientation-controlled gallium arsenide nanowires on silicon substrates.
GaAs nanowires were epitaxially grown on Si(001) and Si(111) substrates by using Au-catalyzed vapor-liquid-solid (VLS) growth in a solid source molecular beam epitaxy system. Scanning electronExpand
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All-optical frequency down-conversion for full-duplex WDM RoF systems utilizing an SOA-MZI
An all-optical frequency down-conversion technique utilizing an SOA-MZI, which can be used for a full-duplex WDM RoF system with an all-optical frequency upconversion technique, is proposed andExpand
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Error-free simultaneous all-optical upconversion of WDM radio-over-fiber signals
A simultaneous all-optical upconversion technique for cost-effective wavelength-division-multiplexing (WDM) radio-over-fiber (RoF) applications utilizing a semiconductor optical amplifier (SOA)Expand
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Design of a 1-Volt and μ-power SARADC for Sensor Network Application
Design and verification of a low-voltage, low-power, and extremely small area successive approximation registered analog-to-digital converter (SARADC) for sensor network applications are presented.Expand
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All-optical frequency downconversion technique utilizing a four-wave mixing effect in a single semiconductor optical amplifier for wavelength division multiplexing radio-over-fiber applications.
An all-optical frequency downconversion utilizing a four-wave mixing effect in a single semiconductor optical amplifier (SOA) was experimentally demonstrated for wavelength division multiplexingExpand
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Continuous-wave THz vector imaging system utilizing two-tone signal generation and self-mixing detection.
We propose and demonstrate a continuous-wave vector THz imaging system utilizing a photonic generation of two-tone THz signals and self-mixing detection. The proposed system measures amplitude andExpand
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Flash ADC architecture using multiplexers to reduce a preamplifier and comparator count
A flash analog-to-digital converter (ADC) using multiplexers (MUXs) to reduce the number of preamplifiers and comparators is reported. A traditional N-bit flash ADC requires 2N-1 preamplifiers andExpand
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Improved Efficiency-Bandwidth Product of Modified Uni-Traveling Carrier Photodiode Structures Using an Undoped Photo-Absorption Layer
Effects of undoped photo-absorption layers in modified uni-traveling carrier photodiode structures on quantum efficiency and bandwidth are reported. Modified uni-traveling carrier photodiodeExpand
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Investigation of feasible cryptographic algorithms for wireless sensor network
Feasibility of various cryptographic algorithms for use in a wireless sensor network utilizing MICAz-type motes and the TinyOS is investigated. Usage of resources including memory, computation time,Expand
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InAs nanowires on Si substrates grown by solid source molecular beam epitaxy
Au-activated InAs nanowires were grown on Si substrates by solid source molecular beam epitaxy (SSMBE). Epitaxial growth of InAs nanowires turned out to be very sensitive to the surface condition ofExpand
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