基于光栅材料视错觉属性的“新中式”服装创新研究

文章聚焦科技革新与时尚发展背景下光栅材料的动态性和吸引性在“新中式”风格服装设计中的应用及其创新潜力。市场反馈显示,光栅材料不仅能与舒适面料结合,增强服装的视觉表现与功能性,还显著提升产品附加值,契合“新中式”美学风格服饰的需求。“新中式”创新服装的爆火也说明了市场需求能反向促进新的创新产品,“新中式”美学光栅服装可以反向激活传统文化的活力。文章旨在推进光栅材料在服装设计中的进一步发展,为中国设计美学在服装现代化转型提供新视角与实践指导。

复合型交联型分子结构光栅装饰材料

本发明提供了一种粘合性能优异并有交联型分子结构的复合型光栅装饰材料,可用于墙面、柱面、折面、多曲面装饰。 在无机材料层(1)(诸如玻璃、瓷器、金属材料等)上,涂一层粘合树脂层(2),再把带有交联型分子结构的树脂层(3)的光栅浮雕层(4)粘压其上,即为本发明产品。 图1为实施例1的剖视图。

光栅壁纸:立体印刷新商机

某天，你拖着疲惫的身子回家，推开门一看，青翠欲滴的画面布满了墙壁，就像初春的田野，清新而又静谧。而你，白天的疲惫一扫而光，心情无比轻松。更妙的是，你每移动一步，图案就会随着变化，小草、花朵、山丘，一幅幅精美绝伦的画面环绕身边，仿佛置身于大自然，轻松、舒适而自在。

浅析光栅立体印刷的应用

传统印刷只能再现三维立体景物的二维平面影像,从而丧失了纵深立体的感觉。通过探讨光栅立体设计原理,以再现三维立体的图像,以及制作光栅立体画像的技术方法,阐述了狭缝光栅法、柱镜光栅法成像方法,并着重介绍了光栅材料,讨论了光栅材料的选择及应用。

光栅使图像动起来

立体印刷发明至今已近90年,但真正用于商业生产仅有30多年的历史.立体印刷之所以一直处于低调,材料要求高、制作难度大是主要原因.但随着科技的发展,计算机技术的应用,制版与印刷技术的提高及光栅材料质量的提升,我们相信,立体印刷将进入快速发展阶段.

3D技术在地图出版中的应用

结合三维立体地图出版的实际,简要阐述三维3D地图的制作原理、制作方法及印刷装订流程,以及三维立体地图的前景。

浅析立体印刷技术

近年来,随着人民生活水平的不断提高,人们的眼光也越来越挑剔,开始追求包装印刷产品带给我们的视觉享受。立体印刷作为独立发展的一种特种印刷技术,以其产品独特的印刷效果和较高的附加值,已经吸引了许多业内人士的关注。

Research on the characteristics of a twisted high birefringence fiber grating

A novel torsion sensor,which can be embedded in the engineering material,is proposed.Based on the coupled mode theory and the characteristic of twisted high birefringence fiber,we have established the mathematical model of twisted high birefringence fiber grating transfer matrix.Two numerical simulation methods based on the transfer matrix method and coupled mode theory were used to analyze the consequent changes in reflection spectra.The simulation results of the two methods show good agreement with each other.The two main peak wavelengths of the high birefringence fiber grating shift as the twist angle changes from 0 to 360.And a peak was produced among the wavelengths of two main peaks.Its wavelength basically does not change and is about 1 552.225 nm.Its corresponding reflected peak value R_c basically presents the linear relationship with the twist angle α.The experiments show that the system has a wide measurement range.The resolution is 0.012° and the sensitivity is 0.13/rad.Good agreements between experimental results and numerical simulations have been obtained.

Damage Monitoring in Composite Stiffened Skin Using Fiber Bragg Grating under Tensile and Three-Point Loading

One of the problems associated with loading a fully composite structure with joints is that the loads are not linear through the neutral axis of the structure but are collinear; this induces additional moment and creates a load in the normal direction, which is typically a critical load because it can create delamination and can only be withstood if it is small. Another problem is that the structure is difficult to inspect using conventional methods because of limited accessibility. With fiber Bragg grating （FBG）, the problem can potentially be solved in structures with a stiffness mismatch. The model used to represent the problem above is a composite stiffened skin with two loading cases： tensile and three-point bending. Additionally, FBG is used to monitor and characterize the delamination caused by both loading cases. Finite element modeling （FEM） with traction versus separation theory is performed to determine the critical area on the specimen for placement of the FBG before manufacturing and testing. In this research, FBG can successfully monitor and characterize delamination caused by both loading cases in structures that have mismatched stiffnesses. Also, FBG can predict the delamination growth quantitatively. A spectrum graph of the FBG results can be used to replace a conventional mechanical graph for use in structural health monitoring.

Failure Monitoring of E-Glass/Vinylester Composites Using Fiber Grating Acoustic Sensor

This paper reports an application of an optical fiber sensor in a continuous and in situ failure testing of an E-glass/vinylester top hat stiffener （THS）. The sensor head was constructed from a compact phase-shifted fiber Bragg grating （PS-FBG）. The narrow transmission channel of the PS-FBG is highly sensitive to small perturbation, hence suitable to be used in acoustic emission （AE） assessment technique. The progressive failure of THS was tested under transverse loading to experimentally simulate the actual loading in practice. Our experimental tests have demonstrated, in good agreement with the commercial piezoelectric sensors, that the important failures information of the THS was successfully recorded by the simple intensity-type PS-FBG sensor.

Fiber Bragg Grating Strain Sensors for Marine Engineering

For the health monitoring of the offshore drilling platform in the salt-fog environment, three nonmetallic materials, i.e., silica, FR-4 epoxy board and sheet molding compound （SMC）, with the good anti-corrosion ability were chosen as the packaging materials for the fiber Bragg grating （FBG） strain sensors. By selecting a highly sensitive structure of the fiber Bragg grating strain sensor, the performances of the sensors with three materials were investigated both numerically and experimentally. The strain sensitivities were 3.76pm/με, 3.02pm/με and 3.03pm/με, respectively. The linearity was better than 0.998. It provides useful information for developing sensors for the marine engineering.

An FBG impact location system based on broadband light source and improved TDoA algorithm

When a structure material is damaged by impact events, the reliability and lifetime of the material will be severely af- fected. So impact location is considered as the prime approach for structural health and damage monitoring. In this study, a novel fiber Bragg grating （FBG） impact location system based on broadband light source is designed, aiming at the shortcoming of existing location systems based on FBG. An improved localization algorithm based on the time difference of arrival （TDoA） is proposed for impact location. According to this algorithm, the impact position can be accurately predicted without wave velocity. Impact planar location experiments are carried out for verification of the FBG impact location system and algorithm on a 400 mmx400 mmx3 mm aluminum alloy plate. The resulted locating error shows high precision and good stability of the proposed system.

Novel sol-gel material for fabrication of a long period waveguide grating filter as a precise thermometer

A new kind of organic-inorganic hybrid HfO2/SiO2 sol-gel material with a large thermo-optic coefficient and a wide linear tunable temperature range has been developed for fabrication of a long period waveguide grating （LPWG） filter, whose parameters were optimized and designed by using finite difference time domain （FDTD） simulations. The LPWG filter, a periodic rectangle-corrugated grating structure, was easily fabricated with soft-lithography technique. At a temperature range from 19~C to 70~C, the fabricated LPWG filter element demonstrated a high temperature sensitivity of about 6.5 nm/~C and a wide linear tunable temperature range of 51℃, so that it can be used as a precise thermometer. Our results are useful for the designs of LPWG filters for the implementation of a wide range of thermo-optic functions.

Fiber Optic Interrogation Systems for Hypervelocity and Low Velocity Impact Studies

The aim of this project was to develop non-contact fiber optic based displacement sensors to operate in the harsh environment of a ＂light gas gun＂ （LGG）, which can ＂fire＂ small particles at velocities ranging from 1 km/s-8.4km/s. The LGG is used extensively for research in aerospace to analyze the effects of high speed impacts on materials. Ideally the measurement should be made close to the center of the impact to minimize corruption of the data from edge effects and survive the impact. We chose to develop a non-contact ＂pseudo＂ confocal intensity sensor, which demonstrated resolution comparable with conventional polyvinylidene fluoride （PVDF） sensors combined with high survivability and low cost. A second sensor was developed based on ＂fiber Bragg gratings＂ （FBG） to enable a more detailed analysis of the effects of the impact, although requiring contact with the target the low weight and very small contact area of the FBG had minimal effect on the dynamics of the target. The FBG was mounted either on the surface of the target or tangentially between a fixed location. The output signals from the FBG were interrogated in time by a new method. Measurements were made on carbon fiber composite plates in the LGG and on low velocity impact tests. The particle momentum for the low velocity impact tests was chosen to be similar to that of the particles used in the LGG.

Ultrathin 2D ternary Bi_(2)Te_(2)Se flakes for fast-response photodetectors with gate-tunable responsivity

Two-dimensional(2D) ternary materials have sprung up in a broad variety of optoelectronic applications due to their robust degree of freedom to design the physical properties of the materials through adjusting the stoichiometric ratio. However, the controlled growth of high-quality 2D ternary materials with good chemical stoichiometry remains challenging, which severely impedes their further development and future device applications. Herein, we synthesize ternary Bi_(2)Te_(2)Se(BTS) flakes with a thickness down to 4 nm and a lateral dimension about 60 μm by an atmospheric-pressure solid source thermal evaporation method on a mica substrate. The phonon vibration and electrical transportation of 2D BTS are respectively investigated by temperature-dependent Raman spectrum and conductivity measurements. Furthermore, the photodetector based on 2D BTS exhibits excellent performance with a high light on/off ratio of 1300(365 nm), a wide spectral response range from 365 to 980 nm, and an ultra-fast response speed up to 2 μs. In addition, its electrical and photoelectric properties can be modulated by the gate voltage, offering an improved infrared responsivity to 2.74 A W^(-1) and an on/off ratio of 2266 under 980 nm. This work introduces an effective approach to obtain 2D BTS flakes and demonstrates their excellent prospects in optoelectronics.

Advances in Optical Fiber Bragg Grating Sensor Technologies

The authors review their recent advances in the development of optical fiber Bragg grating （FBG） sensor technologies. After a brief review of the fiber grating sensors, several newly developed FBG sensors are described. With the continuous development of fiber materials, microstructures and post-processing technologies, FBG sensors are still creative after the first demonstration of permanent gratings thirty years ago.

Design of high-sensitivity metal-coated LPFG sensor based on material dispersion

A high-sensitivity metal-coated long-period fiber grating(LPFG) sensor based on material dispersion is designed.Based on the coupled mode theory,the influence of the material dispersion on the dual-peak characteristics of the metal-coated LPFG is studied.After considering the material dispersion,the jumping region of the dual-resonant-wavelength shifts toward the thinner film thickness,and the sensitivity of the dual-peak metal-coated LPFG sensor to liquid refractive index(RI) can be obtained to supply accurate parameter combinations.Experimentally,two kinds of silver-coated LPFGs with different film thicknesses and grating periods are fabricated to monitor the salt solution,and the sensitivities of these two sensors are compared.The experimental results are consistent with the theoretical analyses.

Optical bistability based on surface plasmon coupled between a noble metal film and a metal grating involving Kerr materials

A phenomenon about optical bistability is successfully investigated in a layered structure consisting of a silver film with Kerr medium and a silver grating sandwiched between semi-infinite linear dielectrics.This type of structure can lead to the optical bistability phenomena occurring in reflection and transmission.There exists an optimal thickness of the metal grating that can cut off the effect of the near-field enhancement and may have the lowest effect on conversion from surface plasmon to light.This structure can realize the functions of the beam splitter and the polarization splitter and will be essential for future classical and quantum information processing.

Use of FBG Sensors for SHM in Aerospace Structures

This paper details some significant findings on the use of the fiber Bragg grating （FBG） sensors for structural health monitoring （SHM） in aerospace fiber reinforced polymer （FRP） structures. A diminutive sensor provides a capability of imbedding inside FRP structures to monitor vital locations of damage. Some practical problems associated with the implementation of FBG based SHM systems in the aerospace FRP structures such as the difficulty of embedding FBG sensors during the manufacturing process and interrelation of distortion to FBG spectra due to internal damage, and other independent effects will be thoroughly studied. An innovative method to interpret FBG signals for identifying damage inside the structures will also be discussed.