Conductive textiles are fabrics that include conductive yarns woven into or tracks printed on to the textiles. have attracted significant attention, since they fundamental for integration of electronic functions achieve wearable devices. Screen printing is a well-established and cost-effective fabrication method; it enables versatile layout tracks. The limitation current screen-printed low durability weathering, abrasion washing. This paper presents process producing waterproof durable...

We report a direct fabrication of an omnidirectional negative microlens array on curved substrate by femtosecond laser enhanced chemical etching process, which is utilized as molding template for duplicating bioinspired compound eyes. The treatment the glass employs common x-y-z stage without rotating sample surface perpendicular to beam, and uniform, omnidirectional-aligned microlenses are generated after hydrofluoric acid etching. Using concave template, we fabricate artificial eye with...

Abstract Practical wearable e‐textiles must be durable and retain, as far possible, the textile properties such drape, feel, lightweight, breathability, washability that make fabrics suitable for clothing. Early e‐textile garments were realized by inserting standard portable electronic devices into bespoke pockets arranging interconnects cabling across garment. In these examples, merely served a vehicle to house electronics had no inherent functionality. A reduction in component size,...

Superwettable (by water or oil) materials have been used in oil/water separation to cope with the growing oily industrial sewage discharge and oil spill accidents. The artificial superwetting for that previously reported are expensive, using them usually causes secondary pollution, so practical, large-scale uses of those limited. Here, we find wood sheet shows underwater superoleophobicity low adhesion water, resulting from its strong capacity absorbing water. A through-microhole array was...

This paper presents research into a user-friendly electronic sleeve (e-sleeve) with integrated electrodes in an array for wearable healthcare. The electrode was directly printed onto everyday clothing fabric using screen printing. properties and designed structures of the e-sleeve were assessed refined through interaction end users. Different layouts fabricated to optimize user experience terms comfort, effectivity ease use. uses dry facilitate use can survive bending sufficient number times...

This paper details the design, fabrication and testing of flexible textile-concealed Radio Frequency Identification (RFID) tags for wearable applications in a smart city/smart building environment. The proposed tag designs aim to reduce overall footprint, enabling textile integration whilst maintaining read range. RFID filament is less than 3.5 mm width 100 length. based on an electrically small (0.0033 λ 2 ) high-impedance planar dipole antenna with tuning loop, reflection coefficient -21...

A customized Lithium Nickel Manganese Cobalt Oxide(NMC) based battery pack was designed using a Finite Element(FE) model and simulated coolant containing 0.001 vol% 0.005 Graphene Nanoplatelets(GNPs) in mixture of Ethylene Glycol(EG) water (50:50) to assess the effectiveness lowering operating temperature within pack. Three variations were as one tier, two three tier systems optimize surface contact flowing with heated batteries. The pack's set 60 °C, simulation study run over 15-second...

Free-standing cantilevers have been fabricated by screen printing sacrificial and structural layers onto a standard polyester cotton fabric. By additional conductive layers, complete capacitive motion sensor on fabric using only has fabricated. This type of free-standing structure cannot currently be conventional manufacturing processes. In addition, compared to smart fabrication processes (e.g. weaving knitting), offers the advantages geometric design flexibility ability simultaneously...

A flexible 2.4 GHz wireless sensor node with a bespoke single-layer monopole antenna, tuned for on-body operation wearable applications, is presented. Multiple antenna design approaches tuning antennas have been investigated. The proposed patch and meandered, designed in the insole, exhibit simulated realized gain of -3.98 -1.97 dB, respectively. were fabricated on 25 μm polyimide substrate, exhibiting up to 16% lower insertion losses at 20 than FR4 PCBs. integrated incorporates commercial...

In the past two decades number of studies have been reported on use thermoplastics as a substrate for 3D printed patch antennas. However, no work has thermoplastic-thermosetting composite-based antennas and their mechanical, morphological, rheological, radiofrequency (RF) characterization sensing applications. this study low-density polyethylene (LDPE) LDPE-5% bakelite (BAK) antenna (resonating frequency 2.45 GHz) were (for secondary recycling) fused deposition modeling (FDM) setup. The RF...

Microlens arrays (MLAs), as the important optical devices, are easily polluted by water droplets or power‐like‐contaminates in air. Endowing artificial MLAs with anti‐water and self‐cleaning abilities remains great challenge. In this paper, authors report a novel method for fabricating superhydrophobic polydimethylsiloxane (PDMS) combination of femtosecond laser wet etching direct writing methods. The resultant surface is composed convex MLA surrounding rough micro/nanoscale hierarchical...

Globally, human life expectancy is steadily increasing causing an increase in the elderly population and consequently increased costs of supporting them. Ambient assisted living active research area aimed at people to live independently their preferred environment. This paper presents design testing a self-powered wearable headband for electroencephalogram (EEG) based detection emotions allowing evaluation quality people. Printed electrode fabrication discussed followed by energy harvester...

This paper presents a printing technology for the design and manufacture of interactive planar speakers. With this technology, sound emission can be easily integrated into various textiles at stage with minimal assembly after printing. reports direct-write dispenser-printed sound-emitting smart fabrics, aimed creative fashion architecture applications opening up new opportunities in product design. Planar spiral speakers generate membrane vibration so emit when driven from an a.c. audio...

This paper presents a method to integrate and package an accelerometer within textile create electronic (e-textile). The smallest commercially available sensor (2 mm × 2 0.95 mm) is used in the e-textile fully integrated weave structure of fabric itself, rendering it invisible wearer. forms basis wearable woven sleeve which applied arm knee joint bending angle measurement. based system identify activity type, such as walking or running, count total number steps taken. Performance was...

The microstrip patch antenna (MPA) with a thermoplastic substrate has been widely used in wearable sensors primarily due to its lightweight, flexibility, strength, and compactness. But up till now, little conveyed on the use of three-dimensional (3D) printed polyurethane (TPU) cotton-lycra woven (CLW) fabric-based as sensor. This study presents novel scalable approach for characterizing, simulating, fabricating sensor applications. In this 3D printing TPU CLW fabric (70% cotton (on warp...

This paper reports, for the first time, on design, fabrication and testing of a planar valveless micropump, entirely screen printed onto flexible polyimide (Kapton) substrate using sacrificial, structural, conductive piezoelectric layers. The sacrificial layer, used to achieve pump chamber inlet/outlet channels, is removed water followed by 140 ° C heat treatment evaporate from structure. process analogous standard silicon based micro-electro-mechanical system process. Applying sinusoidal AC...

The promise of smart cities offers the potential to change way we live, and refers integration IoT systems for people-centred applications, together with collection processing data, associated decision making. Central realization this are wearable autonomous computing systems. There considerable challenges that exist in space require research across different areas electronics computer science; it is multidisciplinary consideration novel paper. We consider these from perspectives, involving...

Electronic textile (e-textile) systems require reliable interfaces between materials with dissimilar mechanical properties, as they contain a combination of rigid and flexible or stretchable parts. For example, sensors, such those knit woven from conductive fibers, printed onto textiles inks, often need to be connected electronic components. Rather than directly attaching components substrates, interposers—devices that route different types contact, mismatched pitch—can used. We demonstrate...