Piezofibers to smart textiles: a review on recent advances and future outlook for wearable technology

Mokhtari, Fatemeh; Cheng, Zhenxiang; Raad, Raad; Xi, Jiangtao; Foroughi, Javad

doi:10.1039/d0ta00227e

Cited by 138 publications

(118 citation statements)

References 307 publications

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“…This is because these materials are usually rigid, costly, and lack flexibility and mechanical resilience. A lot of research has already explored numerous materials which exhibit suitable properties as a substrate for conductive materials for antennas are conductive polymers [ 28 , 29 , 30 , 31 , 32 , 33 , 34 ], conductive threads [ 35 , 36 , 37 ] and conductive textile [ 38 , 39 , 40 , 41 , 42 , 43 , 44 , 45 , 46 , 47 , 48 , 49 , 50 , 51 , 52 ]. For dielectric materials, Polyimide (PI) [ 7 , 11 , 26 , 29 , 53 , 54 , 55 , 56 , 57 , 58 , 59 ], Polyethylene Terephthalate (PET) [ 60 , 61 , 62 , 63 , 64 , 65 , 66 , 67 ], Polydimethylsiloxane (PDMS) [ 68 , 69 , 70 , 71 , 72 , 73 , 74 ,…”

Section: Introductionmentioning

confidence: 99%

Bending Analysis of Polymer-Based Flexible Antennas for Wearable, General IoT Applications: A Review

et al. 2021

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Flexible substrates have become essential in order to provide increased flexibility in wearable sensors, including polymers, plastic, paper, textiles and fabrics. This study is to comprehensively summarize the bending capabilities of flexible polymer substrate for general Internet of Things (IoTs) applications. The basic premise is to investigate the flexibility and bending ability of polymer materials as well as their tendency to withstand deformation. We start by providing a chronological order of flexible materials which have been used during the last few decades. In the future, the IoT is expected to support a diverse set of technologies to enable new applications through wireless connectivity. For wearable IoTs, flexibility and bending capabilities of materials are required. This paper provides an overview of some abundantly used polymer substrates and compares their physical, electrical and mechanical properties. It also studies the bending effects on the radiation performance of antenna designs that use polymer substrates. Moreover, we explore a selection of flexible materials for flexible antennas in IoT applications, namely Polyimides (PI), Polyethylene Terephthalate (PET), Polydimethylsiloxane (PDMS), Polytetrafluoroethylene (PTFE), Rogers RT/Duroid and Liquid Crystal Polymer (LCP). The study includes a complete analysis of bending and folding effects on the radiation characteristics such as S-parameters, resonant frequency deviation and the impedance mismatch with feedline of the flexible polymer substrate microstrip antennas. These flexible polymer substrates are useful for future wearable devices and general IoT applications.

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Section: Introductionmentioning

confidence: 99%

Bending Analysis of Polymer-Based Flexible Antennas for Wearable, General IoT Applications: A Review

et al. 2021

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“…Polyvinylidene fluoride (PVdF) is an industrial thermoplastic of the fluoropolymer family, semicrystalline with three crystalline phases (α, β and γ), the first two prevail at room temperature, being the latter responsible for the piezoelectric characteristics in the PVdF, due to the orientation of the atoms in its molecular structure [131]. PVdF shows piezoelectricity which allows it to be used interestingly as Piezofiber in Smart Textiles [132,133].…”

Section: Poly(vinylidene Fluoride-co-hexafluoropropylene) (Pvdf-hfp)mentioning

confidence: 99%

A Review of the Use of GPEs in Zinc-Based Batteries. A Step Closer to Wearable Electronic Gadgets and Smart Textiles

2020

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With the flourish of flexible and wearable electronics gadgets, the need for flexible power sources has become essential. The growth of this increasingly diverse range of devices boosted the necessity to develop materials for such flexible power sources such as secondary batteries, fuel cells, supercapacitors, sensors, dye-sensitized solar cells, etc. In that context, comprehensives studies on flexible conversion and energy storage devices have been released for other technologies such Li-ion standing out the importance of the research done lately in GPEs (gel polymer electrolytes) for energy conversion and storage. However, flexible zinc batteries have not received the attention they deserve within the flexible batteries field, which are destined to be one of the high rank players in the wearable devices future market. This review presents an extensive overview of the most notable or prominent gel polymeric materials, including biobased polymers, and zinc chemistries as well as its practical or functional implementation in flexible wearable devices. The ultimate aim is to highlight zinc-based batteries as power sources to fill a segment of the world flexible batteries future market.

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“…An additional focus is pointed at the technical challenges and the advanced solutions introduced with respect to conventional sensors. The presented paper is a focused literature review of current, high-quality articles in the field of smart textiles and sensorized garments, and information is obtained from scientific journals in various fields, including but not limited to biomedical engineering, electronics, materials science, information technology and mechanical engineering [ 17 ]. The articles have been searched on Google Scholar, Pubmed, Scopus, Google Patents, and Web of Science, using keywords like “garments”, “smart textiles”, “textile sensors”, “textile technologies”, or similar, and limiting the publication date to papers published after 2000.…”

Section: Introductionmentioning

confidence: 99%

Smart Textiles and Sensorized Garments for Physiological Monitoring: A Review of Available Solutions and Techniques

Angelucci

Cavicchioli

Cintorrino

et al. 2021

Sensors

105

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Several wearable devices for physiological and activity monitoring are found on the market, but most of them only allow spot measurements. However, the continuous detection of physiological parameters without any constriction in time or space would be useful in several fields such as healthcare, fitness, and work. This can be achieved with the application of textile technologies for sensorized garments, where the sensors are completely embedded in the fabric. The complete integration of sensors in the fabric leads to several manufacturing techniques that allow dealing with both the technological challenges entailed by the physiological parameters under investigation, and the basic requirements of a garment such as perspiration, washability, and comfort. This review is intended to provide a detailed description of the textile technologies in terms of materials and manufacturing processes employed in the production of sensorized fabrics. The focus is pointed at the technical challenges and the advanced solutions introduced with respect to conventional sensors for recording different physiological parameters, and some interesting textile implementations for the acquisition of biopotentials, respiratory parameters, temperature and sweat are proposed. In the last section, an overview of the main garments on the market is depicted, also exploring some relevant projects under development.

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Piezofibers to smart textiles: a review on recent advances and future outlook for wearable technology

Abstract: Recent advances in smart textiles and wearable technologies based on piezoelectric fibers as wearable energy harvesters.

Cited by 138 publications

References 307 publications

Bending Analysis of Polymer-Based Flexible Antennas for Wearable, General IoT Applications: A Review

Bending Analysis of Polymer-Based Flexible Antennas for Wearable, General IoT Applications: A Review

A Review of the Use of GPEs in Zinc-Based Batteries. A Step Closer to Wearable Electronic Gadgets and Smart Textiles

Smart Textiles and Sensorized Garments for Physiological Monitoring: A Review of Available Solutions and Techniques

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