Fabrication of Force Sensor Circuits on Wearable Conductive Textiles

Usma, Clara; Kouzani, Abbas Z.; Chua, J.J.C.; Arogbonlo, Adetokunbo; Adams, Scott; Gibson, Ian

doi:10.1016/j.protcy.2015.07.042

Cited by 7 publications

(6 citation statements)

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“…Because of the nylon material, this tape will not break due to bending and folding, moreover, the electrode used to connect the sensor matrix could be the selected conductive nylon fabric tape, and because of the nylon material, this tape will not break when the mat is bending and folding. The characteristic of high conductivity allows only a few ohms per inch of resistance, and the most convenient thing is that it can be directly attached to one side of the fabric [38]. In addition, the ribbon cable can upload data collected by each electrode to the multiplexer, and the multiplexer controls data collection and sends it to the Arduino for data processing.…”

Section: Design and Methodologymentioning

confidence: 99%

“…On the other hand, Jose et al also proposed a point pressure mapping system based on a single-layer textile sensor [38]. In this design, the silver-plated yarns are sewn on the cotton fabric in parallel, and the yarns and cotton fabrics are sewn vertically and horizontally to make the yarns and the cotton fabric present a net shape, and then the conductive polymer solution is applied to the junction of each yarn.…”

Section: A Structure Design Of Pressure-sensitive Devicesmentioning

confidence: 99%

“…In this design, the silver-plated yarns are sewn on the cotton fabric in parallel, and the yarns and cotton fabrics are sewn vertically and horizontally to make the yarns and the cotton fabric present a net shape, and then the conductive polymer solution is applied to the junction of each yarn. When pressure is felt at the processed wiring, a resistance change is generated and the information is sent to a display device [38]. There are a variety of smart mat systems used in various scenarios, which collect pressure data using matrix-arranged varistors and then perform analog-to-digital conversion via cables linking each resistor.…”

Section: A Structure Design Of Pressure-sensitive Devicesmentioning

confidence: 99%

See 2 more Smart Citations

Smart Mat Used for Prevention of Hospital-Acquired Pressure Injuries

Gao¹,

Lin²

2022

Preprint

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This work develops a smart mat for monitoring body positions. We use Velostat as a force sensor resistance (FSR) to construct a sensor matrix over the mat to receive the pressure distribution of the patient's body, and then upload the processed distribution information to the PC for data visualization through Arduino. Data visualization on the PC side is compiled through Python language to realize the functions of patient body pressure distribution monitoring, long-term pressure alarm and posture prediction. The purpose of this work is to relieve the work stress on medical staff caused by pressure injuries during the treatment and care of patients during the pandemic. This paper includes the literature review on similar previous works and combines the test results to design the structure and circuit of the smart mat.

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Section: Design and Methodologymentioning

confidence: 99%

Section: A Structure Design Of Pressure-sensitive Devicesmentioning

confidence: 99%

Section: A Structure Design Of Pressure-sensitive Devicesmentioning

confidence: 99%

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Smart Mat Used for Prevention of Hospital-Acquired Pressure Injuries

Gao¹,

Lin²

2022

Preprint

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“…Such products connect textiles and electronics and can be relevant for the development of smart materials capable of achieving a broad spectrum of functions, e.g., in flexible electronic products (Stoppa and Chiolerio 2014;Gowri et al 2010). E-textile products have many applications, e.g., in biomedical sensors (electrocardiogram sensors), piezoresistive sensors, piezoelectric materials (optical resonator and transducer), rehabilitation (electromagnetic shields in physiotherapy) as well as professional sports and recreation (smart suits) (Rattfalt et al 2007;Zhou et al 2014;Capineri 2014;Usma et al 2015;Dias 2015). Modifiers such as silver, carbon, gold and copper are the most common conductors and can be combined with various textile materials using conventional and unconventional methods (Cieślak et al 2009;Stempien et al 2016;Shateri-Khalilabad and Yazdanshenas 2013;Cui et al 2015).…”

Section: Introductionmentioning

confidence: 99%

Investigation on functionalization of cotton and viscose fabrics with AgNWs

et al. 2016

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A study on the functionalization of cotton and viscose fabrics to achieve bifunctional conductive and antibacterial properties was carried out; 0.5 wt% AgNW ethanolic colloid was prepared, and fabrics were dipped and dried in the colloid 1, 10 and 15 times. After one dipping, both fabrics remained nonconductive, and the surface resistance (R s ) of cotton was 4.9 9 10 10 and of viscose 3.6 9 10 11 X. Excellent conductivity properties were shown in cotton fabric after 10 dippings (20 X) and in viscose fabric after 15 dippings (46 X). The Ag content of these fabrics was 53.3 and 52.3% (SEM/EDX analysis) and 13.77 and 14.12% (TG/DTG analysis) for cotton and viscose, respectively. XRD analysis revealed the presence of AgNWs on the fabric surface. FTIR/ATR, Raman and TG analysis confirmed the effects of modifications. The AgNW layers on both fabric surfaces were resistant to abrasion. After 50 washes of the modified cotton fabric, R s increased from 20 to 195 X. The AgNW layer was stable and the fabric still highly conductive. However, viscose fabric became nonconductive after two washes, and the surface resistance increased from 46 to 1.4 9 10 11 X. The tensile strength of cotton modified with AgNWs increased by about 49% and for viscose decreased by about 27%. AgNW-modified cotton fabric showed a significant antibacterial effect against S. aureus and K. pneumoniae bacteria. The presented method is more suitable for cotton because the modified cotton fabric retains the mechanical and conductive properties even after many washes.

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“…[35][36][37][38][39] Synthetic fibers such as nylon have wider application than most natural fibers because of its outstanding properties of abrasion resistance, elastic recovery and fatigue durability. In particular, metal coated nylon fibers have been broadly applied in wearable sensors, such as strain sensors, 40 conductive resistive sensors, 41 pressure sensors, 42 and biological sensors. 43 In addition, noble metal coated nylon fibers with a rough surface provide the possibility to be used as wearable high-sensitive SERS substrates due to the facilitation of building dense plasmonic hotspots.…”

mentioning

confidence: 99%

Construction of dense plasmonic hotspots on coarse Ag layer coated nylon fibers for ultrasensitive SERS sensing

Liu

et al. 2022

Textile Research Journal

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Surface-enhanced Raman scattering is a powerful sensing tool effectively and rapidly to detect chemicals in environmental monitoring and food safety. Textile fiber-based surface-enhanced Raman scattering substrates have been fabricated to contribute to the practical applications of surface-enhanced Raman scattering sensing. Inspired by the metallic nanostructures with dense plasmonic hotspots which have excellent surface-enhanced Raman scattering activity, coarse silver layer coated nylon fibers are used in this study to combine with gold nanoparticles by a simple immersion method forming enriched plasmonic hotspots on textile fibers for ultrasensitive surface-enhanced Raman scattering detection. The fiber-based surface-enhanced Raman scattering substrate denoted as gold nanoparticle@silver layer coated nylon fiber shows a high sensitivity to rhodamine 6G with an excellent enhancement factor of 2.41 × 1010 and a detection limit of 10−14 M. The finite-difference time-domain simulations indicate that ultra-high sensitivity arises from the enhanced electric fields densely formed in the inter-particle and particle-film gap in the twisted gold nanoparticle@silver layer coated nylon fiber structure. In addition, the gold nanoparticle@silver layer coated nylon fiber substrate demonstrates outstanding surface-enhanced Raman scattering signal reproducibility (relative standard deviation 6.14%) as well as application flexibility. Through a simple swab procedure, gold nanoparticle@silver layer coated nylon fibers absorb rhodamine 6G molecules on apple and the detection limit can reach 10−13 M. Our results allowed us to foresee the use of synthetic fibers enriched with plasmonic hotspots in ultrasensitive wearable sensors.

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Fabrication of Force Sensor Circuits on Wearable Conductive Textiles

Cited by 7 publications

References 0 publications

Smart Mat Used for Prevention of Hospital-Acquired Pressure Injuries

Smart Mat Used for Prevention of Hospital-Acquired Pressure Injuries

Investigation on functionalization of cotton and viscose fabrics with AgNWs

Construction of dense plasmonic hotspots on coarse Ag layer coated nylon fibers for ultrasensitive SERS sensing

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