Wearable electronic design: electrothermal properties of conductive knitted fabrics

Li, Li; Au, Wai Man; Ding, Feng; Hua, Tao; Wong, Kwong Shing

doi:10.1177/0040517513494254

Cited by 31 publications

(29 citation statements)

References 10 publications

(9 reference statements)

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“…(Golmohammadi et al 2017) 3.1.3. Textiles and fibers-Textiles form a broad spectrum of novel materials for flexible biosensing and can be fabricated as fibers (1D), woven, knitted, or fashioned into other non-woven (2D) structures to provide a solid support for the active sensing area (Li et al 2014a;Stoppa and Chiolerio 2014;Windmiller and Wang 2013). These materials, including wool, cotton, or synthetics (nylon, polyester, etc.…”

Section: Paper-papermentioning

confidence: 99%

The design, fabrication, and applications of flexible biosensing devices

Meng

Obodo

Yadavalli

2019

Biosensors and Bioelectronics

139

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Flexible biosensors form part of a rapidly growing research field that take advantage of a multidisciplinary approach involving materials, fabrication and design strategies to be able to function at biological interfaces that may be soft, intrinsically curvy, irregular, or elastic. Numerous exciting advancements are being proposed and developed each year towards applications in healthcare, fundamental biomedical research, food safety and environmental monitoring. In order to place these developments in perspective, this review is intended to present an overview on field of flexible biosensor development. We endeavor to show how this subset of the broader field of flexible and wearable devices presents unique characteristics inherent in their design. Initially, a discussion on the structure of flexible biosensors is presented to address the critical issues specific to their design. We then summarize the different materials as substrates that can resist mechanical deformation while retaining their function of the bioreceptors and active elements. Several examples of flexible biosensors are presented based on the different environments in which they may be deployed or on the basis of targeted biological analytes. Challenges and future perspectives pertinent to the current and future stages of development are presented. Through these summaries and discussion, this review is expected to provide insights towards a systematic and fundamental understanding for the fabrication and utilization of flexible biosensors, as well as inspire and improve designs for smart and effective devices in the future.

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Section: Paper-papermentioning

confidence: 99%

The design, fabrication, and applications of flexible biosensing devices

Meng

Obodo

Yadavalli

2019

Biosensors and Bioelectronics

139

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“…20 Infrared radio imaging system. An intelligent electric-thermal fabric [21][22][23][24][25][26] (Figure 6(d)) can reach a constant surface temperature under 8 V, 0.87 A after 30 min. It was used as a heat supplier.…”

Section: Evaluation Methodsmentioning

confidence: 99%

A novel approach for developing high thermal conductive artificial leather by utilizing smart electronic materials

Yang

Wang

2016

Textile Research Journal

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Nowadays, artificial leather is an important commodity in daily life, especially in the fields of apparels, stationery and furniture. However, due to the maturity of producing technology and market segmentation, the industry trends to be saturated. Leather product manufacturers face intense competition and increasing production costs to survive on feeble profits. Thus, everyone is seeking a solution to break this predicament. Thanks to technical advancement and diversified intelligent electronics, a promising market opportunity has emerged that looks for innovative functional leather. This leather can exhibit high thermal conductivity and act as an essential component of electronic outside packages to prevent over-heating.This study aims to develop a high thermal conductive artificial leather (HTCAL). It incorporates smart electronic textile material (conductive yarn) into traditional artificial leather production through modifying the material and structure of its base layer. The result showed that the thermal conductivity of HTCAL was improved by 19.6% and, when wearing directly, a significant temperature gap between skin and the inner side of the leather occurred, which could offer a comfort cool feeling when worn in summer. This approach is a breakthrough to seize a new opportunity and offer an advancing direction. Further, this HTCAL can free the industry from periodical demand restriction, that is, seasonal limitation, and broaden product research and development into more fields. Thus, this approach can not only improve manufacturers' competitiveness and break them out of the current predicament, but also it creates new business opportunities.

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“…It was found that the resistance value will decrease dramatically in accordance with an increase in float or tuck elements. Some researchers have investigated the heating properties of conductive fabrics under different voltages [19,20,21]. On the basis of previous research, it has been deduced that the electrothermal properties of EKCF will change in accordance with variations in the knitted structures and applied voltage.…”

Section: Introductionmentioning

confidence: 99%

Structural Parameters Affecting Electrothermal Properties of Woolen Knitted Fabrics Integrated with Silver-Coated Yarns

2019

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Recently, more and more researchers have focused on electrical textiles that can provide or convert energy to facilitate people’s lives. Knitting conductive yarns into ordinary fabrics is a common way for electrical textiles to transmit heat or electrical signals to humans. This paper is aimed at studying the resistance values and temperatures of electrothermal knitted conductive fabric (EKCF) subjected to certain voltages over time. Six types of EKCFs with structural differences were fabricated using a computerized flat knitting machine with intarsia technology. Uniform samples 10 × 10 cm in size were made from wool, as were two different specifications of silver-coated conductive yarns. The wool yarn and one silver-coated yarn were mixed to knit a resistance area 2 × 2 cm in size in the center of the EKCF to observe heating behaviors. The experiment results showed that when the EKCFs were subjected to certain voltages over time, the resistance values of the resistance area increased over a short time and then gradually decreased, and the temperature gradually increased in the first 1000 s and tended toward stability after a certain period of time. The structural coefficient κ between different knitted structures (which predicted the thermal properties of different EKCFs subjected to different voltages) was analyzed. These results are of great significance for predicting the electrothermal performance of EKCFs with different knitted structures. On the basis of these results, an optimized knitted structure was selected as the best EKCF for wearable textiles, and the findings contribute to the field of technological and intelligent electrothermal garments and related products.

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Wearable electronic design: electrothermal properties of conductive knitted fabrics

Cited by 31 publications

References 10 publications

The design, fabrication, and applications of flexible biosensing devices

The design, fabrication, and applications of flexible biosensing devices

A novel approach for developing high thermal conductive artificial leather by utilizing smart electronic materials

Structural Parameters Affecting Electrothermal Properties of Woolen Knitted Fabrics Integrated with Silver-Coated Yarns

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