All-organic flexible fabric antenna for wearable electronics

An all-organic fabric patch antenna is realized with the help of nanotemplates-assisted PEDOT:PSS conductive phase segregation, paving a new way for clothing integrated wearable electronic networks.

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Design framework for a seamless smart glove using a digital knitting system

Fashion and Textiles ◽

10.1186/s40691-020-00237-2 ◽

2021 ◽

Vol 8 (1) ◽

Cited By ~ 1

Author(s):

Yewon Song ◽

Seulah Lee ◽

Yuna Choi ◽

Sora Han ◽

Hyuna Won ◽

...

Keyword(s):

Systematic Approach ◽

Performance Criteria ◽

Wearable Electronics ◽

Design Development ◽

Performance Requirements ◽

Development Framework ◽

Promising Strategy ◽

Cad Cam ◽

Wearable Electronic ◽

Electronic Textile

AbstractThe wearable electronics integrated with textile-based devices is a promising strategy to meet the requirements of human comfort as well as electrical performances. This research presents a design and development framework for a seamless glove sensor system using digital knitting fabrication. Based on the performance requirements of glove sensors for controlling a prosthetic hand, desirable design components include electrical conductivity, comfort, formfit, electrical sensitivity, and customizable design. These attributes are determined and achieved by applying appropriate materials and fabrication technologies. In this study, a digital knitting CAD/CAM system is utilized to meet the desired performance criteria, and two prototypes of the seamless glove sensor systems are successfully developed for the detection of both human and robotic finger motions. This digital knitting system will provide considerable potential for customized design development as well as a sustainable production process. This structured, systematic approach could be adapted in the future development of wearable electronic textile systems.

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Foldable and washable textile-based OLEDs with a multi-functional near-room-temperature encapsulation layer for smart e-textiles

npj Flexible Electronics ◽

10.1038/s41528-021-00112-0 ◽

2021 ◽

Vol 5 (1) ◽

Author(s):

So Yeong Jeong ◽

Hye Rin Shim ◽

Yunha Na ◽

Ki Suk Kang ◽

Yongmin Jeon ◽

...

Keyword(s):

Room Temperature ◽

Wearable Electronics ◽

Ambient Conditions ◽

Light Emitting ◽

Stable Operating ◽

Mechanical Durability ◽

Potential Applications ◽

Wearable Electronic ◽

Data Signal ◽

Wearable Electronic Devices

AbstractWearable electronic devices are being developed because of their wide potential applications and user convenience. Among them, wearable organic light emitting diodes (OLEDs) play an important role in visualizing the data signal processed in wearable electronics to humans. In this study, textile-based OLEDs were fabricated and their practical utility was demonstrated. The textile-based OLEDs exhibited a stable operating lifetime under ambient conditions, enough mechanical durability to endure the deformation by the movement of humans, and washability for maintaining its optoelectronic properties even in water condition such as rain, sweat, or washing. In this study, the main technology used to realize this textile-based OLED was multi-functional near-room-temperature encapsulation. The outstanding impermeability of TiO2 film deposited at near-room-temperature was demonstrated. The internal residual stress in the encapsulation layer was controlled, and the device was capped by highly cross-linked hydrophobic polymer film, providing a highly impermeable, mechanically flexible, and waterproof encapsulation.

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Heterogeneous integration of rigid, soft, and liquid materials for self-healable, recyclable, and reconfigurable wearable electronics

Science Advances ◽

10.1126/sciadv.abd0202 ◽

2020 ◽

Vol 6 (45) ◽

pp. eabd0202

Author(s):

Chuanqian Shi ◽

Zhanan Zou ◽

Zepeng Lei ◽

Pengcheng Zhu ◽

Wei Zhang ◽

...

Keyword(s):

Low Cost ◽

Well Being ◽

Electronic System ◽

Physical Activities ◽

Heterogeneous Integration ◽

Wearable Electronics ◽

Materials Chemistry ◽

Computer Interfaces ◽

Human Computer Interfaces ◽

Wearable Electronic

Wearable electronics can be integrated with the human body for monitoring physical activities and health conditions, for human-computer interfaces, and for virtual/augmented reality. We here report a multifunctional wearable electronic system that combines advances in materials, chemistry, and mechanics to enable superior stretchability, self-healability, recyclability, and reconfigurability. This electronic system heterogeneously integrates rigid, soft, and liquid materials through a low-cost fabrication method. The properties reported in this wearable electronic system can find applications in many areas, including health care, robotics, and prosthetics, and can benefit the well-being, economy, and sustainability of our society.

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Study on Different Techniques of Fabricating Conductive Fabrics for Developing Wearable Electronics

Research Journal of Textile and Apparel ◽

10.1108/rjta-19-04-2015-b002 ◽

2015 ◽

Vol 19 (4) ◽

pp. 11-23 ◽

Cited By ~ 1

Author(s):

L Ashok Kumar

Keyword(s):

Research Work ◽

Interdisciplinary Studies ◽

Wearable Electronics ◽

Test Rig ◽

Electronic Products ◽

Conductive Fabric ◽

User Acceptability ◽

Wearable Electronic ◽

Different Diameters ◽

Conductive Yarn

In recent years, interdisciplinary studies have been the mainstream in research discourses and practices. Depending on the degree of integration, the combination of electronics and textiles can be divided into three categories: wearable electronics, textronics and fibertronics. This paper discusses the development of cotton-wrapped nichrome yarn, copper core conductive yarn and optical core conductive yarn in different diameters for the production of nichrome fabric, copper core conductive fabric, optical core conductive fabric and teleintimation fabric. The yarn and the fabric were tested by a test rig especially developed for this research work. This work provides a methodology of developing conductive yarn and fabric for the development of wearable electronic products in terms of user acceptability.

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Fabrication of circuits by multi-nozzle electrohydrodynamic inkjet printing for soft wearable electronics

Journal of Materials Research ◽

10.1557/s43578-021-00188-4 ◽

2021 ◽

Author(s):

Arshad Khan ◽

Khalid Rahman ◽

Shawkat Ali ◽

Saleem Khan ◽

Bo Wang ◽

...

Keyword(s):

Inkjet Printing ◽

Mechanical Stability ◽

Thermoplastic Polyurethane ◽

Electronic Devices ◽

Human Motion ◽

Wearable Electronics ◽

Counter Electrodes ◽

Electric Circuits ◽

Wearable Electronic ◽

Wearable Electronic Devices

Abstract Wearable electronic devices are evolving from current rigid configurations to flexible and ultimately stretchable structures. These emerging systems require soft circuits for connecting the various working units of the overall system. This paper presents fabrication of soft circuits by electrohydrodynamic (EHD) inkjet-printing technique. Multi-nozzle EHD printing head is employed for rapid fabrication of electric circuits on a wide set of materials, including glass substrate (rigid), flexible polyethylene terephthalate (PET) films, and stretchable thermoplastic polyurethane (TPU) films. To avoid the effects of substrate materials on the jettability, the proposed multi-nozzle head is equipped with integrated individual counter electrodes (electrodes are placed above the printing substrate). High-resolution circuits (50 ± 5 µm) with high electrical conductivity (0.6 Ω □−1) on soft substrate materials validate our well-controlled multi-nozzle EHD printing approach. The produced circuits showed excellent flexibility (bending radius ≈ 5 mm radius), high stretchability (strain ≈ 100%), and long-term mechanical stability (500 cycles at 30% strain). The concept is further demonstrated with a soft strain sensor based on a multi-nozzle EHD-printed circuit, employed for monitoring the human motion (finger bending), indicating the potential applications of these circuits in soft wearable electronic devices. Graphic Abstract

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Design of Wearable MIMO Antenna Using STUB Matching

International Journal for Research in Engineering Application & Management ◽

10.35291/2454-9150.2020.0316 ◽

2020 ◽

pp. 373-377

Keyword(s):

Patch Antenna ◽

Mutual Coupling ◽

Microstrip Patch Antenna ◽

Wearable Electronics ◽

Defected Ground Structure ◽

Ground Structure ◽

Mimo Antenna ◽

Microstrip Patch ◽

Smart Textile ◽

Matching Technique

In this work, a Multi-band wearable microstrip patch antenna designed integrated with the defected ground structure(DGS)[1], and the substrate being used is Denim which is flexible[4] and can be easily fabricated on common wearable materials. This Radiating patch antenna is designed with the optimized dimensions and suits appropriately for the communication in wearable electronics as well as in smart textile application. The designed antenna operates at resonating frequencies of 4.885 GHz and 5.57 GHz. Further the design is modified to a 2-element MIMO [2] antenna using T-shaped Stub matching technique to reduce mutual coupling and resonate at frequency of 8GHz by designing and simulating in CST Microwave Studio 2019 software and the enhanced results like Directivity, Gain, E-field are obtained.

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Inkjet printing wearable electronic devices

Journal of Materials Chemistry C ◽

10.1039/c7tc00038c ◽

2017 ◽

Vol 5 (12) ◽

pp. 2971-2993 ◽

Cited By ~ 179

Author(s):

Meng Gao ◽

Lihong Li ◽

Yanlin Song

Keyword(s):

Inkjet Printing ◽

Electronic Devices ◽

Wearable Electronics ◽

Recent Advances ◽

Wearable Electronic ◽

Wearable Electronic Devices

In this review, the recent advances in inks, strategies, and the applications of inkjet-printed wearable electronics have been summarized.

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Vapor Phase Polymerized Conducting Polymer/MXene Textiles for Wearable Electronics

Nanoscale ◽

10.1039/d0nr07433k ◽

2021 ◽

Author(s):

Xianhong Zheng ◽

Jiakun Shen ◽

Qiaole Hu ◽

wenqi nie ◽

Zongqian Wang ◽

...

Keyword(s):

Conducting Polymer ◽

Vapor Phase ◽

Wearable Electronics ◽

Electronic Textiles ◽

Intrinsic Properties ◽

Multiple Functions ◽

Potential Applications ◽

Wearable Electronic

Multifunctional electronic textiles hold great potential applications in wearable electronic fields. However, it remains challenging to seamlessly integrate the multiple functions on the textiles substrates without sacrificing their intrinsic properties....

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