Integrated switches play a crucial role in the development of reconfigurable optical add-drop multiplexers (ROADMs) that have greater flexibility and compactness, ultimately leading to robust single-chip solutions. Despite decades research on with various structures platforms, achieving balance between dense integration, low insertion loss (IL), polarization-dependent (PDL) remains significant challenge. In this paper, we propose demonstrate 32 × 4 switch using high-index doped silica glass...

The damage location detection of the fiber-reinforced composite thin plate (FCTP) is studied through curvature modal shape scanning method (CMSSM), utilizing advantages sensitivity shapes to local stiffness changes and high measurement accuracy a laser vibrometer. Firstly, our research begins with construction frame model for FCTP. Subsequently, during analysis data extraction principles, two-dimensional five-spot-tripling surface smoothing developed, so that quantitative index FCTP, i.e.,...

Time-varying mesh stiffness (TVMS) and gear errors include short-term long-term components are the two main internal dynamic excitations for transmission. The coupling relationship between factors is usually neglected in traditional quasi-static behaviors analysis of system. This paper investigates influence manufacturing on helical system considering TVMS errors. TVMS, loaded static transmission error (LSTE) composite (LCMS) determined using an improved tooth contact (LTCA) model....

Powered exoskeletons are used to assist walking, but carrying a huge power supply system will bring inconvenience humans. Passive lack control and accurate energy management. The muscles of the leg work periodically during walking. When legs swinging down after they lifted highest point, it is gravity that works on human body, does not require extra energy. Therefore, this article describes wearable lower limb harvesting transmission exoskeleton (EHTE) achieve biomechanical walking; harvest,...

The marine gearbox is usually installed on a vibration isolation system in order to reduce oscillation transmitted the ship foundation. However, researches transmission gear‐housing and are currently independent. With increasing requirement of lower vibration, coupled model needs be built control propagation from view whole system. Considering mesh error excitation gear pair, flexible gear‐housing‐foundation impedance constructed this paper, vibratory power flow calculated. Power...

The severity of gear noise response depends on the sensitivity geared rotor system dynamics to transmission error. As gearbox design trending towards lighter weight and lower noise, influence housing compliance dynamic characteristics cannot be ignored. In this study, a gear-shaft-bearing-housing coupled impedance model is proposed account for effect vibration system. This offers convenient modeling, efficient computing, ability combine computed parameters with experimental ones. numerical...

Abstract This study used hyperspectral imaging to analyze localized near-field interactions between incident electromagnetic waves and silicon nanowire (SiNW) arrays manufactured through catalytic etching of Si wafers for different durations. The results revealed that the unetched upper surface area on reflection light decreased with increasing time. A band peaking at approximately 880 nm was generated from etched more than 1 h. We six separate images wavelength-dependent spatial optical...

This paper presents a novel general system-structure coupling dynamic analysis procedure to comprehensively analyze the performance of planetary gears. The takes loads gears as excitations for structure analysis. Considering time-varying mesh stiffness gears, torsional carrier and support bearings, system model is built by using lumped parameter method. Vibration modes natural frequencies are investigated through modal Furthermore, response analyzed under various working conditions....

Abstract Micro/nano-textured Si wafers manufactured using metal-assisted chemical etching (MACE) have been the focus of several studies, but mechanism bubble generation during MACE process affecting textured surfaces has rarely reported. This study investigated effect due to different placement patterns wafer (face-up, stirred face-down, and face-down). The results indicated that pattern notably influences uniformity outward appearance. At 2 h etching, appearance face-up was more homogeneous...

An adaptive meshless computational system is introduced in this paper to solve two-dimensional elastoplastic contact mechanics. element-free Galerkin-finite element coupling model based on the gradient of strain energy and a linear programming technique with initial stiffness method for problems are combined. Principle explanation program realization carried out. The modularization concept software engineering used, change influence domain radius property material also taken into account by...

Abstract The fluoride-assisted galvanic replacement reaction is a conventional method for fabricating metallic dendrites on silicon wafers. However, whether bubbles affect manufacturing unclear. This study investigated the effects of Au and nanowires through metal-assisted chemical etching. results manufacture under three conditions (standard, shaking, vacuum conditions) were compared. Synchronous growth observed dendrite deposition rate was higher than etching rate. Compared with standard...

Wang, H.; Liu, G.; Wu, L., and Zhang, T., 2015. Modeling parameter revising method of rigid-flexible coupling dynamics model.Virtual prototype technology has been widely applied to simulate the performance various complex mechanical systems. However, errors existing in analysis models usually cannot be ignored, particularly model, so many parameters factors have considered improved. In this paper, taking a multi-body impact system as subject investigated, virtual model is built by using...

In this paper, topology optimization of gearbox to reduce the radiated noise is studied based on analysis modal acoustic contribution and panel contribution. Firstly, bearing dynamic loads are obtained by solving equations gear system. Secondly, vibration calculated using FEM simulated BEM taking these as excitations. Thirdly, having larger sound pressure level (SPL) at a specific field point found (PACA), taken design domain. The mode order with determined (MACA), making corresponding...

In recent years, social media platforms such as Facebook and Twitter have seen rapid growth are favored by users of all ages. However, in the age information overload, quality interactions on varies significantly, leading to negative feelings among affecting their overall experience loyalty. This study takes Flow theory its starting point investigates needs at various stages flow experience. We propose modifications model with aim enhancing user satisfaction. Firstly, based literature...