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Using a double-sided fabrication method, we fabricated Bi2Sr2CaCu2O8 (BSCCO) intrinsic Josephson junctions (IJJs) with a gold-BSCCO-gold structure. Coherent emission is observed at large dc input power, where a hot spot and “cold” part of the stack, coexist. The power, directly detected with a bolometer, is as high as 25 µW, implying the integrated power should be already in the order of sub-mW. We...
The authors report the growth of high-density ZnSe/CdSe multiquantum disks on oxidized Si substrate. It was found the as-grown nanotips were tapered with the mixture of cubic zinc blende and hexagonal wurtzite structures. It was also found that photoluminescence intensities observed from these ZnSe/CdSe multiquantum disks were much larger than that observed from the homogeneous ZnSe. Furthermore,...
A approach of using high performance Ge photo-detectors (PD) integrated with Si waveguide based microresonators for multiplexing detection has been proposed. Simultaneous measurement of the resonance curves of sensor array using this approach has been demonstrated. The resonance peaks of integrated sensor array show good correlation (R2=0.9979) with that of normal resonator, proving the feasibility...
Strained Si HBTs have been demonstrated for the first time with a maximum current gain (beta) of 3700 using a relaxed Si0.85Ge0.15 virtual substrate, Si0.7Ge0.3 base and strained Si emitter. This represents 10times and 27times larger gain compared with pseudomorphic SiGe HBTs and Si control BJTs which were manufactured in parallel and had current gains of 334 and 135, respectively. The strained Si...
In this paper, we show the shape evolution of GaAs islands which grow unconventionally from underneath an array of SiO2 nanodisks. The growth mechanism consists of catalytic growth and facet formation.
On-die capacitance is critical parameter in power delivery analysis and design, which impacts design cost and system performance. To improve modeling accuracy, correlation was studied for on-die capacitance among internal algorithm/tool, on-die PDA, Apachepsilas RedHawk and lab measurement. Internal tool, on-die PDA is a tool to automatically simulate on-die models including Cdie, Rdie and Icc(t)...
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