Selected Papers from the 4th International Conference on the Challenges, Opportunities, Innovations and Applications in Electronic Textiles 2022

A special issue of Micromachines (ISSN 2072-666X). This special issue belongs to the section "E:Engineering and Technology".

Deadline for manuscript submissions: closed (15 June 2023) | Viewed by 5265

Special Issue Editors

Smart Wearable Research Group, Department of Engineering, Nottingham Trent University, Nottingam, UK
Interests: wearable technologies; smart sensors; digital healthcare; medical technologies
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Guest Editor
Advanced Textiles Research Group, School of Art and Design, Nottingham Trent University, Bonington Building, Dryden Street, Nottingham NG1 4GG, UK
Interests: electronic textiles; smart textiles; sensors, design engineering; Internet of Things
Special Issues, Collections and Topics in MDPI journals

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Co-Guest Editor
Optics and Photonics Group, Faculty of Engineering, University of Nottingham, Nottingham NG7 2RD, UK
Interests: biomedical optics; ultrasound modulated optical tomography; laser doppler flowmetry; application of smart CMOS sensors to biomedicine; wearable sensors; imaging and sensing in regenerative medicine

Special Issue Information

Dear Colleagues,

This Special Issue will publish extended conference papers from the 4th International Conference on the Challenges, Opportunities, Innovations and Applications in Electronic Textiles that was held in Nottingham, United Kingdom, 9–10th November 2022. The conference was focused on giving people from academia and industry the opportunity to discuss the exciting innovations and challenges in the rapidly emerging field of electronic textiles (https://e-textilesconference.com).

We are honored to serve as guest editors of this Special Issue which will be published in Micromachines. We encourage contributions on, but not limited to, the following areas:

  • Applications and Future Trends;
  • Sensing and Embedded Systems;
  • Manufacturing and Standards;
  • Reliability and Sustainability;
  • Design and Fashion;
  • Immersive Technologies (VR, AR, Motion Capture). 

All conference participants are welcome to submit to this Special Issue and all papers will be peer-reviewed before being accepted for publication.

Dr. Yang Wei
Dr. Theodore Hughes-Riley
Prof. Dr. Stephen P. Morgan
Guest Editors

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Published Papers (3 papers)

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Research

14 pages, 3496 KiB  
Article
Novel Weft-Knitted Strain Sensors for Motion Capture
by Susanne Fischer, Bahareh Abtahi, Mareen Warncke, Carola Böhmer, Hans Winger, Carmen Sachse, Johannes Mersch, Eric Häntzsche, Andreas Nocke and Chokri Cherif
Micromachines 2024, 15(2), 222; https://doi.org/10.3390/mi15020222 - 31 Jan 2024
Viewed by 1219
Abstract
Functional electrical stimulation (FES) aims to improve the gait pattern in cases of weak foot dorsiflexion (foot lifter weakness) and, therefore, increase the liveability of people suffering from chronic diseases of the central nervous system, e.g., multiple sclerosis. One important component of FES [...] Read more.
Functional electrical stimulation (FES) aims to improve the gait pattern in cases of weak foot dorsiflexion (foot lifter weakness) and, therefore, increase the liveability of people suffering from chronic diseases of the central nervous system, e.g., multiple sclerosis. One important component of FES is the detection of the knee angle in order to enable the situational triggering of dorsiflexion in the right gait phase by electrical impulses. This paper presents an alternative approach to sensors for motion capture in the form of weft-knitted strain sensors. The use of textile-based strain sensors instead of conventional strain gauges offers the major advantage of direct integration during the knitting process and therefore a very discreet integration into garments. This in turn contributes to the fact that the FES system can be implemented in the form of functional leggings that are suitable for inconspicuous daily use without disturbing the wearer unnecessarily. Different designs of the weft-knitted strain sensor and the influence on its measurement behavior were investigated. The designs differed in terms of the integration direction of the sensor (wale- or course-wise) and the width of the sensor (number of loops) in a weft-knitted textile structure. Full article
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11 pages, 2558 KiB  
Article
Measuring the Flex Life of Conductive Yarns in Narrow Fabric
by Paula Veske, Frederick Bossuyt, Filip Thielemans and Jan Vanfleteren
Micromachines 2023, 14(4), 781; https://doi.org/10.3390/mi14040781 - 30 Mar 2023
Cited by 2 | Viewed by 1594
Abstract
Due to constant advancements in materials research, conductive textile-based materials have been used increasingly in textile-based wearables. However, due to the rigidity of electronics or the need for their encapsulation, conductive textile materials, such as conductive yarns, tend to break faster around transition [...] Read more.
Due to constant advancements in materials research, conductive textile-based materials have been used increasingly in textile-based wearables. However, due to the rigidity of electronics or the need for their encapsulation, conductive textile materials, such as conductive yarns, tend to break faster around transition areas than other parts of e-textile systems. Thus, the current work aims to find the limits of two conductive yarns woven into a narrow fabric at the electronics encapsulation transition point. The tests consisted of repeated bending and mechanical stress, and were conducted using a testing machine built from off-the-shelf components. The electronics were encapsulated with an injection-moulded potting compound. In addition to identifying the most reliable conductive yarn and soft–rigid transition materials, the results examined the failure process during the bending tests, including continuous electrical measurements. Full article
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9 pages, 3778 KiB  
Article
Design of Wearable Finger Sensors for Rehabilitation Applications
by Beyza Bozali, Sepideh Ghodrat and Kaspar M. B. Jansen
Micromachines 2023, 14(4), 710; https://doi.org/10.3390/mi14040710 - 23 Mar 2023
Cited by 4 | Viewed by 1919
Abstract
As an emerging technology, smart textiles have attracted attention for rehabilitation purposes or to monitor heart rate, blood pressure, breathing rate, body posture, as well as limb movements. Traditional rigid sensors do not always provide the desired level of comfort, flexibility, and adaptability. [...] Read more.
As an emerging technology, smart textiles have attracted attention for rehabilitation purposes or to monitor heart rate, blood pressure, breathing rate, body posture, as well as limb movements. Traditional rigid sensors do not always provide the desired level of comfort, flexibility, and adaptability. To improve this, recent research focuses on the development of textile-based sensors. In this study, knitted strain sensors that are linear up to 40% strain with a sensitivity of 1.19 and a low hysteresis characteristic were integrated into different versions of wearable finger sensors for rehabilitation purposes. The results showed that the different finger sensor versions have accurate responses to different angles of the index finger at relaxation, 45° and 90°. Additionally, the effect of spacer layer thickness between the finger and sensor was investigated. Full article
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