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We present double heterostructure GeSn edge emitting laser. The structure was grown on a Si substrate using a commercial chemical vapor deposition with GeH4 and SnCl4. The lasing threshold of 68 KW/cm2 at 10K and maximum laser operating temperature of 110 K was achieved.
SiGeSn/GeSn/SiGeSn quantum well was grown on Ge buffered Si substrate via chemical vapor deposition. Photoluminescence spectra were obtained using three excitation lasers, which could in-depth probe the optical transition characteristics of the quantum well.
Trace checking is a procedure for evaluating requirements over a log of events produced by a system. This paper deals with the problem of performing trace checking of temporal properties expressed in TemPsy, a pattern-based specification language. The goal of the paper is to present a scalable and practical solution for trace checking, which can be used in contexts where relying on model-driven engineering...
GeSn-based optically pumped lasers and photoconductors have been systematically investigated. The operation wavelength of these devices covers 2–3 μm. Since GeSn technique is fully compatible with current CMOS process, the GeSn-based devices can be widely used in the area of Si integrated photonics.
Characterizations of Ge/Ge0.9Sn0.1/Ge double heterostructure light-emitting diodes have been performed at the temperatures from 300 to 77K. The electroluminescence emission from the direct bandgap transition has been observed and systematically investigated.
Currently, photovoltaic (PV) grid inverters include two sorts, isolated type and non-isolated type. One of the main problems of the isolated PV grid inverters is common mode (CM) noise. This paper introduces a dual Buck inverter for the purpose of the suppression of CM current in PV grid inverter. Compared with traditional full bridge inverter, this topology has simple structure, high efficiency,...
Multiview video plus depth (MVD) has been widely used recently as the representation of 3D scenes. Due to the tremendous data volume, transmission of MVD sequences becomes difficult especially under networks circumstance. Hence, an efficient 3D video coding scheme is required to compress the video data. In this paper, a fast depth map coding method based on optimized inter-frame modes decision in...
We fabricated indium-zinc-oxide (IZO) thin film transistors (TFT) gated by chitosan (CS) on ITO/glass substrate. Chitosan is demonstrated to be a new kind of solution-processed organic polymer electrolyte, which has nice film-forming characteristic. The chitosan thin film shows a large specific gate capacitance of 8.06 (µF/cm2 due to the mobile-ions induced electric-double-layer effect. These devices...
Contractor safety is the key to success for construction projects, the contractor safety goals and performance evaluation system has become the important task of safety management of current building construction. This paper based on experts linguistic assessment and multi-granularity language fusion method of qualitative indexes to evaluate and rational quantification, through the C2R DEA model and...
We realize vibrational photoacoustic microscopy (VPA) using molecular excitation of overtone vibration and acoustic detection of the resultant pressure transients. We demonstrate 3-D VPA imaging of lipid-rich atherosclerotic plaques and lipid bodies in living Drosophila larvae by exciting 2nd overtone of the CH bond stretch around 8300 cm−1. Depth-resolved spectral analysis and a penetration depth...
Balance of exploration and exploitation is an important decision making problem in recent literatures. However, the role of time and the change mechanisms are lack of research. This paper conducted in-depth interviews with two product project managers and one manager in R&D department of washing machine business unit in Haier group. After the analysis of the innovation stage, comparative analysis...
This paper examined the social network construction mode based on connected network component under dynamic alliance environment. We assume that firms in one industry participant in alliances dynamically and simulation results show how the alliance network factors influence the social network information sharing performance. Four propositions in a long-term and no extreme value context are built:...
In the age of globalization and innovation dispersing, globalization of manufacturing and innovation has changed the global innovation paradigm, industrial structure and enterprise competition roadmap dramatically. The amalgamation trend of global innovation networks is transforming the global and local innovation trajectory from centralized control orientation to orderly dispersive collaboration...
This paper presents the combination diagnosis method based on genetic algorithm for rotating machinery according to the limitation that any single fault feature or any single diagnosis method can not achieve the accurate diagnosis result in whole diagnosis state space. This method can effectively use all kinds of different characteristic fault features and diagnosis methods and then bring into play...
This paper presents the combination diagnosis method based on genetic algorithm for rotating machinery according to the limitation that any single fault feature or any single diagnosis method can not achieve the accurate diagnosis result in whole diagnosis state space. This method can effectively use all kinds of different characteristic fault features and diagnosis methods and then bring into play...
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