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In this paper, electric vehicles (EV) are considered as random energy storage devices. For the grid-connected hybrid wind- solar-battery (GCH-WSB) power system, under the premise of ensuring power system reliability, the optimal capacity combination of wind-solar-battery is obtained to achieve the lowest annual total cost. The proposed method takes full advantage of the complementary characteristic...
We develop a scalable heterogeneous integration platform for quantum photonic circuits based on Si3N4 waveguides and on-chip, self-assembled InAs quantum dot-based single-photon sources. Hybrid waveguides, photonic crystals, and microring resonators are demonstrated.
We present a comprehensive analysis of breathing dissipative solitons in two microresonator platforms. Numerical simulations and theoretical analyses are in good agreement with experimental observations, providing insights into the dynamical instabilities in these systems.
Nitrogen-vacancy centers in diamond allow coherent spin state manipulation and optical readout at room temperature, which has powerful applications in nanoscale sensing. Nanophotonic structures such as plasmonic waveguides, nanoantennae, metamaterials, and metasurfaces can enhance the detected fluorescence rate from such broadband emitters. The fluorescence of the coupled emitter is directed into...
A noninvasive measurement of in situ acoustic intensity is useful in a variety of therapeutic applications such as ultrasound induced drug and gene delivery. Some previously proposed methods assumed other acoustic parameters such as scattering coefficient to be constant. This paper proposed a method free of such restrictions, by estimating all the relevant parameters using the highly nonlinear behaviors...
Ultrasound had been reported to locate the actual in situ focal spot of FUS and to compensate for guidance error due to beam distortion. However it still cannot determine exposure dosage in a clinical setting, therefore monitoring often require MR thermography. The main challenge is that multiple relevant acoustic parameters are not easily isolated from measurable signal characteristics in noninvasive...
A novel suspended GeSn microstructure is demonstrated by selective etching of GeSn thin film on Ge. XRD and μ-Raman measurements show that the compressive strain in the GeSn thin film is effectively relaxed, and furthermore, unexpected tensile strain was introduced in the suspended GeSn.
We present our recent researches on novel group IV nano- and micro-structures for potential light sources on Si, including the tensile strained Ge quantum dots (QDs), GeSn thin films and microstructures, and Ge(Sn) nanowires. Tensile-strained Ge QDs were grown by SS-MBE, and photoluminescence was achieved. The GeSn thin films were demonstrated with Sn concentration above the bandgap transition critical...
Dissipative Kerr-cavity temporal Solitons (DKS) are self-localized light pulses that can be excited in coherently-driven nonlinear optical resonators [1], enabling compact, coherent optical Kerr Frequency Combs (KFC) generation, which have numerous potential applications. Numerical studies based on the Lugiato-Lefever Equation (LLE) predicted that DKS can undergo breathing, i.e. periodic variations...
Frequency combs provide a set of equidistant laser lines and find applications in many areas [1]. Microresonator based Kerr frequency combs are a recent scheme for frequency comb generation promising chip-level integration and novel applications such as coherent terabit telecommunications [2, 3]. The underlying principle is nonlinear frequency conversion of a continuous wave pump laser in a high finesse...
Photonic integration is as an enabling technology for photonic quantum science, providing great experimental scalability, stability, and functionality. Although the increasing complexity of quantum photonic circuits has allowed proof-of-principle demonstrations of quantum computation, simulation, and metrology[1], further development is severely limited by the on-chip photon flux that can be made...
Online-store has become more and more popular in recent years. It has brought great benefits for the business. In the intense competitive environment, in order for an online-store to gain strength and competitive edge, it needs to possess a strong store image and to keep and satisfy its customers. In this paper, a model of relationship among online-store image, customer satisfaction and customer loyalty...
In context of keen competition among the online shopping platforms, sellers and developers are finding critical factors of recommendation system that could impact customer experience. In consideration of this, we propose a research model that examines the effects of two characteristics of recommendation, i.e. recommended way and recommendation performance, on customer online shopping experience. The...
We experimentally demonstrated that the inclusion of Ge dots into the gate stack of a Si MOSFET provides extremely high photoresponsivity over 1,000A/W and superior photoresponse linearity of at least 7 decades for 400–1300nm illumination, depending on whether the Ge-dot photoMOSFET operates in the inversion or accumulation modes. Remarkably a very large photocurrent gain of 103–108A/A and a significantly...
This paper studies the influence of the design parameters on electromagnetic performance of permanent magnet ac motors with an exterior rotor having surface mounted magnet poles, and a stator having fractional slot concentrated windings. The study focuses on the quality of the back emf in terms of magnitudes and total harmonic distortion, and the torques developed in the motor. The electromagnetic...
We report a tunable continuous-wave and Bi2Te3 Q-switched Er3+:ZBLAN fiber laser based on a volume Bragg grating (VBG), which demonstrates that VBGs exhibit great potential in wavelength selection for applications in mid-infrared tunable laser sources.
Integrated microresonators are essential building blocks of linear and nonlinear photonic devices. Here we show that the performance of high-Q silicon nitride microresonators for nonlinear photonics strongly depends on the ideality of their coupler design.
Line, a kind of Instant Messenger, has become one of the popular communication tools for modern people. “Ignoring read messages” which means the recipients keep silent after they read the messages sent by the senders have caused poor communication between romantic lovers and further led the devastation of their romantic relationships. This study forms a unique framework representing the factors affecting...
Novel device structures with vertical channels gated by TSV's are demonstrated. The unique device structure is realized in a standard TSV process flow, without new material systems or processes. They can be used for both characterizing the TSV process as well as enable new functions. They can be easily integrated into product designs thus enabling field monitoring.
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