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Increasing the base doping concentration, utilizing gold as the recombination center, employing high quality oxide layer and applying the hardening design for physical structure could effectively reduce the change rate of current gain after irradiation. This conclusion is found out by analyzing the variation of the current gain of bipolar junction transistors with components in different craft.
The modular multilevel converter (MMC) is attractive for medium-or high-power applications because of the advantages of its high modularity, availability, and high power quality. Reliability is one of the most important challenges for the MMC consisting of a large number of submodules (SMs). The capacitor monitoring in each SM of the MMC is an important issue, which would affect the performance of...
A fabrication process is demonstrated to form curved image sensors based on CMOS image sensor technology. A stretchable polymer backplane is fabricated monolithically on the backside of the wafer before a DRIE etch is performed to segment the wafer and make the circuit stretchable.
This paper presents the plane wave excitation of the optical leaky waveguide antenna (OLWA) by the taper array and offset parabolic reflector to obtain high antenna gain. The taper array is composed of 12 slow tapers, and obtain high aperture efficiency. The parabolic reflector enables small size as compared with the taper array. We compare the performance of these excitation methods for the wide...
Thermal-stress co-simulated of a mm-wave T/R system in package(SiP) for Ka-band radar, was performed using ANSYS Workbench code. the T/R SiP is base on four layer high-resistivity silicon substrates which is stacked layer by layer, thermal flux generated from chips propagated to aluminium alloy cavity through silicon substractes and a molybdenum-copper plate. In simulation, the thermal power of the...
Imaging devices for near-infrared wavelengths on silicon large scale integration (LSI) are very attractive for secure applications. We here demonstrate an LSI-compatible hybrid IR detector by integrating PbS quantum dots the surface of silicon.
We design a T-shape structure reflecting mirror covered a gold thin film on the high-resistivity silicon substrate (ρ=1000 Ω·Cm) for the detector array. The electric field distribution of the T-shape structure is simulated by using finite difference time domain (FDTD) solutions in the frequency range from 300 GHz to 400 GHz. The electric field can be gathered in the central area of the silicon substrate...
In this study we describe the design, the simulation and the characterization of a NIR domain plasmonic wavelength demultiplexer integrated on SOI waveguide. The reported device is made of a few chains of gold nano cut wires with a total feature dimensions of 4μm×4μm and is acting as a 1.3/1.5 μm wavelength demultiplexer for optical communication. This is the smallest footprint size wavelength demultiplexer...
Ge-on-Si has been demonstrated as a platform for Si foundry compatible plasmonics. We use laser thermal annealing to demonstrate activated doping levels >1020 cm−3 which allows most of the 3 to 20 μm mid-infrared sensing window to be covered with enhancements comparable to gold plasmonics.
The control of various processes at nanoscale in a real time and easy manner is a challenge for different applications: from lab-on-a-chip to catalysis and medical diagnostic systems. Here, we demonstrate a new system, representing a metal-dielectric (hybrid) nanocavity for multifunctional sensing at nanoscale. The cavity provides enhancement of Raman signal and simultaneous control of the analyte...
We report a fabrication method of nanoscale quantum-dot (QD) organic light-emitting diode (OLED) structure suspended on a monolayer hexagonal boron nitride (h-BN) sheet on nano-hole-patterned SiO2/Si substrate. In our proposed OLED, the junction area is defined by a non-lithographically patterned oxide layer on Si substrate. We utilized self-organized gold nanoparticles to create nanoscale etch windows...
We report a quantum-dot (QD) organic light-emitting diode (OLED) structure formed on Si substrate scaled down to nanometer dimensions. In our proposed OLED, the junction area is defined by a non-lithographically patterned oxide layer on Si substrate. We utilized gold nanoparticles as oxygen barrier mask during thermal oxidation of Si. Previously, we demonstrated a carrier injection mechanism originating...
As beta-phase gallium oxide is gaining attention for potential application in electronic and optoelectronic devices, this paper addresses techniques for nanowire fabrication that offer the potential for low cost simplicity with the uniformity and reproducibility that are necessary for useful device implementation of these nanowires.
Raman spectroscopy and Rutherford backscattering spectrometry reveal that the thickness of a gold film deposited on silicon influences resolidification after pulsed-laser melting, giving rise to surface morphologies not observed with ion-implanted and laser-melted silicon. As film thickness approaches 5nm, these morphologies dominate the electrical behavior.
Silicon-plasmonic photodetection based on internal photoemission exploits the intrinsic absorption in plasmonic waveguides at metal-dielectric interfaces. For this purpose we designed an asymmetric metal-semiconductor-metal waveguide with a width of 75 nm. Our plasmonic internal photoemission detector (PIPED) shows a rec-ord-high photocurrent sensitivity of up to S = 0.12 A / W for light at a wavelength...
Nanoparticle oligomers made of metallic and/or dielectric nanoparticles are able to support sharp Fano resonances originating from an interference of two resonant modes with different spectral width. For practical applications, it is necessary to have an approach for tuning the Fano resonances of a nanostructure after its fabrication. Herein, we demonstrate a novel type of reconfigurable hybrid metaldielectric...
Zeolite structure determination is an interesting challenge even with the progress in terms of structural resolution from X-rays and electron diffraction. The infinite number of potential solutions and the computational cost of this problem make the use of an evolutionary algorithm significant for this challenge. In this paper, we propose a new parallel and distributed hybrid genetic algorithm called...
The vulnerability of a network may suffer tremendous economic losses. From the perspective of network nodes, network security depends not only on the behavior of a node but also on that of its neighbours. We propose a non-cooperative networking vaccination game with economic incentive mechanism under a susceptible-infected-susceptible (SIS) epidemic process. In the game each node individually decides...
Dynamic changes in distribution of mechanical strain generated during wire bonding in Si under and near the bonding pad were measured by using a piezoresistive linear array sensor. The sensor was designed to be able to determine strains in the directions normal and parallel to the surface. Bonding dynamics of Cu and Au balls were investigated. We can clearly observe the oscillating strain according...
A density staggered cantilever was developed to measure the micron length gravity between itself and an optically levitated microsphere in high vacuum. The cantilever, has two main density contrasted materials gold(19.3g/cm3) and silicon(2.33g/cm3), where each of the material is finger-shaped and stagger placed next to each other, constitute an integral finger array on the device layer of SOI wafer...
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