Smart wearables with the capability for continuous monitoring, perceiving, and understanding human tactile motion signals, while ensuring comfort, are highly sought after intelligent healthcare smart life systems. However, concurrently achieving high-performance sensing, long-lasting wearing industrialized fabrication by a low-cost strategy remains great challenge. This is primarily due to critical research gaps in novel textile structure design seamless integration sensing elements. Here,...

Stronger and lighter stab resistance materials are always among the relentless pursuits of scientists engineers. This study presents a featured perspective on investigating influence distribution quantity shear thickening fluid (STF) performance weight STF/Kevlar (SK) fabrics. A series tests confirmed that peak force was 515.48 N (±18.62) because uniform SiO2 nanoparticles in Kevlar fabrics, behaving 2.07 fold than neat (NK) gain rate only 17.1% (±0.56) under optimal technology condition,...

Multifunctional hydrogels with excellent adhesion, biodegradability, and conductivity are essential for overcoming the obstacles of postoperative secondary injury, flexible sensing instability, so on. Herein, we develop a multifunctional silk fibroin (SF) hydrogel modified poly(acrylic acid). Owing to stable chemical cross-linking network abundant carboxylic acid groups SF network, exhibits high tensile strength 74.34 kPa due sufficient cohesion interfacial interactions. Additionally, strain...

There have been various efforts on frequency selective surface in recent years, and of course, some research progress has made, especially numerical calculation simulation field. However, it seems that less work is done the processing forming methods. Soft fabrics are periodic advantages over rigid materials lightweight, softness, low bending rigidity, which make possible meaningful to study their filtering property as medium electromagnetic In this paper, a kind functional textile based was...

Based on traditional frequency selective surfaces (FSSs), the research ideas of novel fabrics (FSFs) are proposed. In this paper, specific square-loop patch FSF was chosen as an example to illustrate design procedures, including ANSYS (HFSS) simulation and numerical calculation methods, then a computer-based experiment conducted develop prototypes. Although simulation, calculation, results have minor differences, especially resonance frequency, they show good consistency overall, which...

In this paper, a computer-based carving experiment was conducted to make frequency selective fabrics (FSFs) with cross-shaped units. Different samples varying fabric types, structure parameters, conductive layers, base and unit shapes were prepared the transmission characteristics tested using Shielding Room Method. The reflection under different electromagnetic (EM) wave incidence angles also study angle stability. Experimental results showed that in given range of 4–14 GHz, two types had...

In order to reduce the fiber diameter and energy consumption in meltblowing process, a modified slot die with two blocks was designed this article. The numerical calculation experimental verification of airflow field under were carried out, effect block structure parameters on air investigated. research results indicate that compared common die, could increase velocity spinning line rate temperature decay line. When width inclination angle lower, height expands, it peak velocity, turbulence...

Based on the research work of traditional electromagnetic shielding fabrics and frequency selective surfaces, novel high-pass woven were proposed. Two different unit cell models built compared, a series design samples further simulated based models. Through contrastive analysis discussion results, validity model 1 was verified influence rules various parameters explored. Compared with 1, 2 more precise containing textile information, like yarn crimp, fabric porosity thickness, but could...

Abstract Percussion instrument drums are traditionally made of wood, which is becoming less available as environmental concerns grow. In order to replace wood in percussion instruments, four types epoxy resin composites reinforced with fabrics hemp, flax, ramie, and jute, respectively, fabricated using vacuum assisted infusion molding. The tensile flexural properties the measured compared those ailanthus wood. results show that strengths moduli either better or between horizontal vertical...

In this paper, to determine the impact of carbon fiber orientation and interweaving on electromagnetic interference (EMI) shielding behaviors, anisotropic isotropic samples were developed by conductive/dielectric weaving spatially distributed glass fiber. Effortless cost-effective, efficiency (SE) was up 42 dB SE/thickness) 41 dB/mm, which had apparent polarization selection characteristics. addition, angle (θ) sensitivity for SE in transverse electric magnetic modes given detail. generally...

In this paper, frequency selective fabrics (FSFs) with narrow-band transmission characteristics were proposed. The square-ring FSF was taken as an instance to illustrate the design principle. Based on existing theoretical basis and by means of software simulation optimization, optimum structures ideal band-stop or band-pass obtained. Then, practical specimens manufactured through a computer-based carving process measured using method in anechoic chamber. Two structural models respectively...

Planar frequency selective fabrics (FSFs) with Jerusalem-shaped units were proposed in this paper. In accordance the previous work, design process was specifically for 10 GHz. Through simulation and optimization procedures, ideal structure parameters obtained, FSFs optimized showed good stability to differential integral algorithms, transmission modes incidence angles of electromagnetic (EM) waves. To further explore internal EM mechanism FSFs, surface currents at 4, 14 GHz analyzed...

Abstract In this paper, a novel kind of electromagnetic (EM) functional textiles is proposed, which show high-pass characteristics as they interact with EM waves. The periodically conductive woven fabric was designed, fabricated, and measured. Specifically, by means unit cell model building simulation, the theoretical S 21 (transmission coefficient) 11 (reflection curves were obtained. A concrete sample fabricated through weaving process, its transmission measured in microwave anechoic...

Based on the research basis of single-layer cross-shaped frequency selective fabrics, electromagnetic transmission characteristics double-layer and three-layer fabrics were explored in this paper. The with different multilayer structures specific-sized conductive units designed, then prepared by computer engraving method tested using free-space method. results show that sample is less affected polarization mode wave, while effect incidence angle slightly larger. For fabric samples same...

The interfacial structure and binding forces of polytrimethylene terephthalate/polyethylene terephthalate filament were investigated through the methods Carbon-13 nuclear magnetic resonance (13C-NMR), differential scanning calorimeter (DSC), electron microscopy (SEM) optical microscopy. When two molten polymers met during spinning process, an interface layer between PTT PET components formed played important role in together. blending time was sufficient, ester-interchange reaction took...

Two kinds of complementary cylindrical frequency selective fabrics (CFSFs) with Jerusalem-shaped units were designed, constructed and analyzed in this paper. The models built simplified based on the thickness equivalent electromagnetic parameters base fabrics. Considering unit number difference bending directionality, simulation processes separately carried out using waveguide method HFSS software. Based preparation preliminary planar prototypes corresponding molds, different CFSF samples...

In order to explore the feasibility of preparing frequency selective fabrics by computer embroidery technology, two complementary ring-shaped structures were selected for design in this paper. Several samples with different size parameters prepared process, and electromagnetic transmission characteristics systematically tested using free-space method. The effects unit type, wave polarization mode, incident angle, processing methods on analyzed depth. results show aperture-type patch-type...

In order to explore the electromagnetic transmission performance of frequency selective fabrics (FSFs) with fractal units, six samples Y-shaped parameters different sizes were prepared by computer embroidery technology, and tested using anechoic chamber test method. The effects unit type, polarization mode, incident angle size on respectively analyzed in depth. results show that for aperture type patch FSFs, has a certain influence. When two groups is 0°, resonance peak largest. increases...

Nine square loop frequency selective fabrics (FSFs) with different layers were designed, prepared, and tested in this paper. Then the electromagnetic transmission characteristics analyzed detail. The test results reveal that of single-layer FSFs are basically identical two wave polarization modes keep good as incidence angle increases. For same surface (FSS) layers, increase FSS layer number may exert influence on characteristics, but mode extent inconsistent for kinds FSFs. complementary...

Abstract To make full use of domestic kapok fiber, the microstructure and composition Quanzhou were invetigated compared with popular Indonesia ceiba. FIB-SEM images showed similar fine tube structures both fibers wall thickness hollow ratios 806.1 nm, 85.56% 863.3 82.40% repectively. Mesopores average width 48.247 38.758 Å proved to be slit pores produced by packing porous lamellae. was more superior in thickness, ratio, specific surface area pore size which would better at oil adsorption....

To study the frequency response characteristics of high-pass woven fabric, samples with varying conductive grid structure, structure parameters, material conductivity, and electromagnetic (EM) wave parameters were prepared measured by shielding room method. Experimental results showed that was effective in obtaining bidirectional ability stripe had directional property to EM wave.. Depending on changing ratios dielectric yarns, exerted influences affecting vertical inductances horizontal...