Multimode Interaction Research Articles

Design and Implementation of Multi-mode Natural Interaction of Game Animation Characters in Mixed Reality: A Novel User Experience Method

To enhance users’ novel experiences in gaming, the design method of multi-mode natural interaction of game animation characters in mixed reality is studied. Through the process of skeleton modeling, interpolation of position and orientation, time alignment and time transformation of character posture, the game animation character in mixed reality is constructed. The multi-role interactive game animation is synthesized using a random graph and uniform network, and the edge of the depth of field image collected by the Kinect somatosensory sensor is extracted. According to the transfer model and observation model of the Kalman filter algorithm, the motion trajectory of the game animation characters is obtained and the game animation characters are tracked. The IRS recognition algorithm is used for optical multi-touch processing in mixed reality, and the natural interaction of multi-mode game animation characters in interaction–perception mode, natural interaction mode and interactive feedback mode is realized. The experimental results demonstrate that this method can achieve multi-mode natural interaction of game animation characters in mixed reality and provide users with a novel game experience.

Enhancement of Interlayer Exciton Emission in a TMDC Heterostructure via a Multi-Resonant Chirped Microresonator Upto Room Temperature.

We report on multi-resonance chirped distributed Bragg reflector (DBR) microcavities. These systems are employed to investigate the light-mater interaction with both intra- and inter-layer excitons of transition metal dichalcogenide (TMDC) bilayer heterostructures. The chirped DBRs consisting of SiO2 and Si3N4 layers of gradually varying thickness exhibit a broad stopband with a width exceeding 600nm. Importantly, the structures provide multiple resonances across a broad spectral range, which can be matched to resonances of the embedded TMDC heterostructures. Studying cavity-coupled emission of both intra- and inter-layer excitons from an integrated WSe2/MoSe2 heterostructure in a chirped microcavity system, an enhanced interlayer exciton emission with a Purcell factor of 6.67 ± 1.02 at 4 K is observed. The cavity-enhanced emission of the interlayer exciton is used to investigate its temperature-dependent luminescence lifetime of 60ps at room temperature. The cavity system modestly suppresses intralayer exciton emission by intentional detuning, thereby promoting a higher IX population and enhancing cavity-coupled interlayer exciton emission. This approach provides an intriguing platform for future studies of energetically distant and confined excitons in different semiconducting materials, which paves the way for various applications such as microlasers and single-photon sources by enabling precise emission control and utilizing multimode resonance light-matter interaction.

Analysis of Failure Forms of Bevel Gear, Shaft, and Bearing Structure System Considering Multi-Mode Damage Accumulation

Abstract During the working process, the structural system, including bevel gear, shaft, and bearing, located in the front journal of the high pressure compressor of the aeroengine rotor is affected by various loads such as assembly load, centrifugal load, temperature load, and meshing excitation, and it leads to different modes of interface damage, for example, wear, slip, and fatigue. With the increase number of working cycles, different interface damage modes affect each other and damage gradually accumulates, which leads to the degradation of the mechanical properties of each component. Finally, the function of the weakest component is lost, resulting in the failure of the structural system. Consequently, the comprehensive influence of multiple failure forms caused by interface damage at different positions results in the failure of the structural system, where the damage position and the failure position are different, and the final failure form is uncertain. In this paper, a damage accumulation mechanical model considering multimode damage interaction is established for bevel gear, shaft and bearing structure system. And the damage-failure mechanical process of the structural system and its key influencing factors under complex environment loads are studied. The results showed that the failure forms of the structural system were closely related to the assembly and load characteristic parameters of the components. Therefore, considering the randomness of the initial assembly state and environment loads, the damage accumulation mechanical process and the final failure forms of the structural system have significant uncertainty.

Quantum logical controlled-NOT gate in a lithium niobate-on-insulator photonic quantum walk

The two-qubit controlled-NOT gate is one of the central entangling operations in quantum information technology. The controlled-NOT gate for single photon qubits is normally realized as a network of five individual beamsplitters on six optical modes. Quantum walks (QWs) are an alternative photonic architecture involving arrays of coupled waveguides, which have been successful for investigating condensed matter physics, however, have not yet been applied to quantum logical operations. Here, we engineer the tight-binding Hamiltonian of an array of lithium niobate-on-insulator waveguides to experimentally demonstrate the two-qubit controlled-NOT gate in a QW. We measure the two-qubit transfer matrix with 0.938 ± 0.003 fidelity, and we use the gate to generate entangled qubits with 0.945 ± 0.002 fidelity by preparing the control photon in a superposition state. Our results highlight a new application for QWs that use a compact multi-mode interaction region to realize large multi-component quantum circuits.

An RF Design of Biperiodic Multimode Interaction Circuit for G-Band Extended Interaction Klystron

An RF Design of Biperiodic Multimode Interaction Circuit for G-Band Extended Interaction Klystron

Steady-state bifurcation of FHN-type oscillator on a square domain

The Turing patterns of reaction-diffusion equations defined over a square region are more complex because of the D4-symmetry of the spatial region. This leads to the occurrence of multiple equivariant Turing bifurcations. In this paper, taking the FHN model as an example, we give a explicit calculation formula of normal form for the simple and double Turing bifurcation of the reaction-diffusion equation with Dirichlet boundary conditions and defined on a square space, and we also obtain a method for the calculation of the existence of spatially inhomogeneous steady-state solutions. This paper provides a theoretical basis for exploring and predicting the pattern formation of spatial multimode interaction.

Temporal-spatial analysis on multi-mode interaction of a flexible pipe subject to external current and internal flow

The vortex-induced vibration (VIV) in relation to a flexible pipe is numerically studied in order to examine the coupled effects occurring between the external shear current and the varying density internal flow. The analysis is performed using numerical methods and interpreted with position-frequency-energy (PFE) and time-frequency-energy (TFE) illustrations. The results indicate that the external shear current and varying density internal flow play different roles in affecting the VIV response. Due to temporal-spatial multi-mode competition, the phenomenon of mode switching is captured, showing alternating amplitude trough and peak in the TFE spectrum. The vibration response at the amplitude trough is commonly characterized by a wide range of frequencies, but the vibration response at the amplitude peak is usually dominated by a single frequency or a narrow range of frequencies. Based on the analysis related to spanwise waveforms, it is found that the standing wave commonly corresponds to a relatively stable equilibrium state of energy transfer between fluid-structure and mode-mode at local segments, and that the traveling waveform corresponds to an unsteady status of energy transfer between fluid-structure along the pipe span. Finally, through the contrast analysis of lift force and vibration response, one can find that the lift force along the pipe span is highly periodic and is in phase with the vibration displacement.

Engineering Multiple GHz Mechanical Modes in Optomechanical Crystal Cavities

Optomechanical crystal cavities (OMCCs) are fundamental nanostructures for a wide range of phenomena and applications. Usually, optomechanical interaction in such OMCCs is limited to a single optical mode and a unique mechanical mode. In this sense, eliminating the single-mode constraint---for instance, by adding more mechanical modes---should enable more complex physical phenomena, giving rise to a context of multimode optomechanical interaction. However, a general method to produce in a controlled way multiple mechanical modes with large coupling rates in OMCCs is still missing. In this work, we present a route to confine multiple GHz mechanical modes coupled to the same optical field with similar optomechanical coupling rates---up to 400 kHz---by OMCC engineering. In essence, we increase the number of unit cells (consisting of a silicon nanobrick perforated by circular holes with corrugations at both its sides) in the adiabatic transition between the cavity center and the mirror region. Remarkably, the mechanical modes in our cavities are located within a full phononic band gap, which is a key requirement to achieve ultrahigh mechanical $Q$ factors at cryogenic temperatures. The multimode behavior in a full phononic band gap and the easiness of realization using standard silicon nanotechnology make our OMCCs highly appealing for applications in the classical and quantum realms.

Research on multi-mode human-computer interaction design evaluation system based on virtual reality technology

The research of multi-mode human-computer interaction design evaluation system based on virtual reality technology is the application of virtual reality technology in the field of human-computer interaction. The main purpose of this study is to provide a new method to evaluate and improve user interface design, which can be used by designers to evaluate their own works. It also provides users with a new way to explore different interfaces through interactive experience.. The purpose of this study is to study the impact of various factors on user performance, as well as the impact of different modes on user performance. Therefore, we designed two experiments: (1) single mode experiment and (2) multi-mode experiment. In these experiments, each factor is vertical to find out its impact on user performance. The results of these experiments are presented in this paper. It also discusses how to apply our findings to future research in HCI.

Параллельная многокубитная эволюция в протоколе квантового неразрушающего взаимодействия

To date, two-qubit quantum logic gates have become an essential part of quantum computing. The study of methods for their implementation is an important practical problem for various quantum optical and information applications. In this paper, we have considered a protocol for multimode quantum non demolition interaction between an atomic ensemble and multimode light with orbital angular momentum in order to analyze the applicability of this protocol in discrete variables computing. We have developed a multimode interaction Hamiltonian and analyzed the dynamics of field and atomic variables depending on the structure of the driving field. We discuss in detail the procedure for separating qubit noninteracting subsystems on a set of atomic and field modes for various values of the orbital angular momentum of the driving field. Such a procedure helps to reduce the considered protocol to the parallel evolution of two-qubit closed systems.

An adaptive fusion method of multi-mode human-computer interaction information in intelligent warehouse

An adaptive fusion method of multi-mode human-computer interaction information in intelligent warehouse

An adaptive fusion method of multi-mode human-computer interaction information in intelligent warehouse

An adaptive fusion method of multi-mode human-computer interaction information in intelligent warehouse

Correlating the perovskite/polymer multi-mode reactions with deep-level traps in perovskite solar cells

•A PEI/perovskite multi-mode interaction including a newfound in-situ protonation •Correlation of in-situ reaction with the deep-level trap of minority carrier •Broad applicability for passivating different perovskites •p-i-n devices with enhanced operational stability and a high PCE of 24.3% The present p-i-n perovskite solar cells are less efficient than their n-i-p counterparts, fundamentally limited by deep-level traps of minority carriers at surfaces. Here, we explore perovskite/polymer multi-mode interactions by comparing the amine group’s various configurations and protonation states in the polyethylenimine (PEI) family. We correlate these interactions with specific deep-trap states by combining deep-level transient spectroscopy (DLTS) and density functional theory (DFT). We identify an in-situ protonation process that significantly reduces deep-level traps of minority carriers. The conventional ex-situ protonated and non-protonated groups do not exhibit this effect. For 1.55-eV p-i-n device, we achieve a high power conversion efficiency (PCE) of 24.3%. For 1.65-eV p-i-n devices directly applicable for tandem on silicon bottom cells, the PCE is improved from 19.4% to 22.3%. The cells exhibit no degradation in accelerated aging testing at 85°C for >1,000 h and maximum-power-point (MPP) tracking for >1,000 h. The present p-i-n perovskite solar cells are less efficient than their n-i-p counterparts, fundamentally limited by deep-level traps of minority carriers at surfaces. Here, we explore perovskite/polymer multi-mode interactions by comparing the amine group’s various configurations and protonation states in the polyethylenimine (PEI) family. We correlate these interactions with specific deep-trap states by combining deep-level transient spectroscopy (DLTS) and density functional theory (DFT). We identify an in-situ protonation process that significantly reduces deep-level traps of minority carriers. The conventional ex-situ protonated and non-protonated groups do not exhibit this effect. For 1.55-eV p-i-n device, we achieve a high power conversion efficiency (PCE) of 24.3%. For 1.65-eV p-i-n devices directly applicable for tandem on silicon bottom cells, the PCE is improved from 19.4% to 22.3%. The cells exhibit no degradation in accelerated aging testing at 85°C for >1,000 h and maximum-power-point (MPP) tracking for >1,000 h.

Noise-Robust Multimodal Audio-Visual Speech Recognition System for Speech-Based Interaction Applications.

Speech is a commonly used interaction-recognition technique in edutainment-based systems and is a key technology for smooth educational learning and user–system interaction. However, its application to real environments is limited owing to the various noise disruptions in real environments. In this study, an audio and visual information-based multimode interaction system is proposed that enables virtual aquarium systems that use speech to interact to be robust to ambient noise. For audio-based speech recognition, a list of words recognized by a speech API is expressed as word vectors using a pretrained model. Meanwhile, vision-based speech recognition uses a composite end-to-end deep neural network. Subsequently, the vectors derived from the API and vision are classified after concatenation. The signal-to-noise ratio of the proposed system was determined based on data from four types of noise environments. Furthermore, it was tested for accuracy and efficiency against existing single-mode strategies for extracting visual features and audio speech recognition. Its average recognition rate was 91.42% when only speech was used, and improved by 6.7% to 98.12% when audio and visual information were combined. This method can be helpful in various real-world settings where speech recognition is regularly utilized, such as cafés, museums, music halls, and kiosks.

Superconducting Cavity Electromechanics: The Realization of an Acoustic Frequency Comb at Microwave Frequencies.

We present a nonlinear multimode superconducting electroacoustic system, where the interplay between superconducting kinetic inductance and piezoelectric strong coupling establishes an effective Kerr nonlinearity among multiple acoustic modes at 10GHz that could hardly be achieved via intrinsic mechanical nonlinearity. By exciting this multimode Kerr system with a single microwave tone, we further demonstrate a coherent electroacoustic frequency comb and provide theoretical understanding of multimode nonlinear interaction in the superstrong coupling limit. This nonlinear superconducting electroacoustic system sheds light on the active control of multimode resonator systems and offers an enabling platform for the dynamic study of microcombs at microwave frequencies.

Process Product Design Based on Multimode Interaction Design

There are many problems in the current process product design, such as poor interaction and low overall efficiency, so a process product design method based on multimode interaction design is proposed. Based on the relationship model, environment model, and object-oriented model of process product design, the process of process product development and design is analyzed. On this basis, the finite state machine is used to analyze the state of the designer to complete the task sequence, as well as the related design task planning, constructing craft products multimodal interaction mechanism, with the improved fuzzy analytic hierarchy process to evaluate the quality of the products, according to the evaluation results of technology of product design optimization. The experimental results show that both experts and ordinary users give a high evaluation of the product designed in this paper, and the design cycle of the product is significantly shortened, indicating that this method can fully save the design time and improve the overall efficiency.

Design of Process Products Based on Image Processing Multimode Interaction

With the development of modern science and technology and more and more image processing systems, related technologies are becoming more and more complex. The application of image processing technology can be seen in various fields of society, such as medical field, aerospace field and life, and entertainment field. Due to the increasing amount of information on the picture, the requirements for the speed and clarity of image processing are also increasing. The existence of various external factors will lead to the production of image products and objects between the error and distortion problems. In order to make the process product design more authentic and reliable, this paper studies the process product design based on image processing multimode interaction. It uses radiometric correction and geometric correction to process distorted images and uses GPU parallel computing technology to accelerate the correction process. In this paper, this technology is applied to the visual recognition of welding robot, and the experiment shows that the product produced by the image processed by this module can obviously reduce the error.

Coupling light to higher order transverse modes of a near-concentric optical cavity.

Optical cavities in the near-concentric regime have near-degenerate transverse modes; the tight focusing transverse modes in this regime enable strong coupling with atoms. These features provide an interesting platform to explore multi-mode interaction between atoms and light. Here, we use a spatial light modulator (SLM) to shape the phase of an incoming light beam to match several Laguerre-Gaussian (LG) modes of a near-concentric optical cavity. We demonstrate coupling efficiency close to the theoretical prediction for single LG modes and well-defined combinations of them, limited mainly by imperfections in the cavity alignment.

Wavelength-scale optical parametric oscillators

Despite recent progress in nonlinear optics in wavelength-scale resonators, there are still open questions on the possibility of parametric oscillation in such resonators. We present a general approach to predict the behavior and estimate the oscillation threshold of multi-mode subwavelength and wavelength-scale optical parametric oscillators (OPOs). As an example, we propose an OPO based on Mie-type multipolar resonances, and we demonstrate that due to the low- Q nature of multipolar modes in wavelength-scale resonators, there is a nonlinear interaction between these modes. As a result, the OPO threshold, compared to the single-mode case, can be reduced by a factor that is significantly larger than the number of interacting modes. The multi-mode interaction can also lead to a phase transition manifested through a sudden change in the parametric gain as well as the oscillation threshold, which can be utilized for enhanced sensing. We establish an explicit connection between the second-harmonic generation efficiency and the OPO threshold. This allows us to estimate the OPO threshold based on measured or simulated second-harmonic generation in different classes of resonators, such as bound states in the continuum and inversely designed resonators. Our approach for analyzing and modeling miniaturized OPOs can open unprecedented opportunities for classical and quantum nonlinear photonics.

In-situ modal inspection based on transverse second harmonic generation in single CdS nanobelt

Based on the transverse second-harmonic generation (TSHG) effect, we demonstrate a method for in-situ modal inspection of nonlinear micro/nanowaveguides. Pumping lights are equally split and coupled into two ends of a single CdS nanobelt (NB). As pumping light counter-propagates along the NB, transverse second-harmonic (TSH) interference patterns are observed. The influence of multimode interaction on the TSHG effect is discussed in detail. Using fast Fourier transform, TSH interference patterns are analyzed, indicating the existence of at least four modes inside the NB. Experimental beat lengths are found to be in agreement with calculated results.