Surface Morphology Analysis of Metallic Structures Formed on Flexible Textile Composite Substrates

Korzeniewska, Ewa; Sekulska‐Nalewajko, Joanna; Gocławski, Jarosław; Rosik, Radosław; Szczęsny, A.; Starowicz, Z.

doi:10.3390/s20072128

Cited by 10 publications

(5 citation statements)

References 45 publications

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“…The plotted curve shows the surface profile marked in the figure as the blue line between the two red markers. The distance between the highest and lowest point of the structure (referred to as R max ) is 332.74 µm [48]. Using physical vapor deposition, the production of an electrically conductive layer was successfully completed while maintaining the flexibility of the electrode.…”

Section: The New Solutionmentioning

confidence: 99%

Applications of Smart Textiles in Post-Stroke Rehabilitation

Korzeniewska

Krawczyk

Mróz

et al. 2020

Sensors

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Stroke is a disease affecting a large part of our society. According to WHO data, it is the second world’s biggest killer, accounting for near six million deaths in 2016 and it is about 30% of the total number of strokes per year. Other patients affected by such a disease should be rehabilitated as soon as possible. As a result of this phenomenon, paresis may occur. Among the devices available on the market there are many rehabilitation robots, but the method of electrostimulation can be used. The authors focused their attention on electrostimulation and commercially available therapies. Using this method, application to people with large hand muscle contracture is difficult. The authors of the work present a solution dedicated to exactly such people. A solution of textronic sensors manufactured on a textile substrate using the technology of physical vapor deposition is presented in the article. As a result of the conducted research, an electroconductive structure was obtained with a low surface resistance value of 1 Ω/□ and high flexibility. It can alternatively be used in hand rehabilitation for electrostimulation of fingertips. The solution is dedicated to people with high hands spasticity for whom it is impossible to put on a rehabilitation glove.

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Section: The New Solutionmentioning

confidence: 99%

Applications of Smart Textiles in Post-Stroke Rehabilitation

Korzeniewska

Krawczyk

Mróz

et al. 2020

Sensors

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“…Using technological masks or modifying the shape with the use of a laser beam [22], it is possible to create patterned thin films or modify the film properties selectively. The quality of the layers produced can be assessed using optical computed tomography [23] with higher resolution than another type of tomography [24].…”

Section: Introductionmentioning

confidence: 99%

The Influence of the Skin Phenomenon on the Impedance of Thin Conductive Layers

Pawłowski,

Plewako,

Korzeniewska

et al. 2023

Electronics

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This paper analyzes the influence of the skin effect and the proximity effect on the inductance and impedance of thin conductive layers. The motivation for taking up this topic is the initial assessment of the possibility of using conductive layers deposited with the PVD technique on textile materials as strip or planar transmission lines of high-frequency signals (e.g., for transmitting images). This work pursues two goals. The first of them is to develop and test a numerical procedure for calculating the electromagnetic field distribution in this type of issue, based on the fundamental solution method (FSM). The second aim is to examine the impact of the skin phenomenon on the resistance, inductance and impedance of thin conductive paths. The correctness and effectiveness of FSM for the analysis of harmonics of electromagnetic fields in systems containing thin conductive layers were confirmed. Based on the performed simulations, it was found that in the frequency range above 10 MHz, the dependence of resistance and impedance on frequency is a power function with an exponent independent of the path width. Moreover, it was found that for paths with a width at least several times greater than their thickness, the dependence of the phase shift between current and voltage on frequency practically does not depend on the path width.

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“…The purpose of surface analyzation is to characterize textiles' geometric structures, which may be tested in two approaches of contact method and optical method [44]. The contact method can describe surface morphology well, but the time needed is much longer, and the needle leaves a trace on the surface.…”

Section: Introductionmentioning

confidence: 99%

Surface Morphology Analysis of Knit Structure-Based Triboelectric Nanogenerator for Enhancing the Transfer Charge

Niu

Miao

et al. 2020

Nanoscale Res Lett

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Harvesting waste biomechanical energy has provided a promising approach to improve the power supplement of wearable devices for extending usage life. Surface morphology is a significant factor for enhancing output performance of triboelectric nanogenerator; however, there is a limitation for evaluating the morphology of the surface and its impact on power generation. To evaluate the relationship between the surface morphology and transfer charge, there is a mathematical theory that is the fractal geometry theory that has been proposed to analyze the characteristic of irregular surface morphology. This theory provided a good understanding of the contact area and roughness of the surface. We have designed three categories of knit structures with cord appearance by using a flat knitting machine and analyzed their surface characteristics. Meanwhile, the geometric structures can be demonstrated through the fractal dimension for evaluating the generated output performance during contacting and separation. The present research exhibits that, with the increasing number of knitted units, the triboelectric power-generation performance continued to reduce due to the available contact area decreasing. After calculating the fractal dimension of different knit structures, the m*n rib structures show the high transfer charge when the fractal dimension is close to number one, especially the fractal dimension of the 1*1 rib structure that can reach 0.99. The fractal theory can be further used as an approach to evaluate the influence on the output performance of irregular surface morphology, unrelated to the uniform convex unit distraction. The result of this research also demonstrated the feasibility of a knitted-based triboelectric nanogenerator in scavenging biomechanical energy for powering portable electronics integrated into garments.

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Surface Morphology Analysis of Metallic Structures Formed on Flexible Textile Composite Substrates

Cited by 10 publications

References 45 publications

Applications of Smart Textiles in Post-Stroke Rehabilitation

Applications of Smart Textiles in Post-Stroke Rehabilitation

The Influence of the Skin Phenomenon on the Impedance of Thin Conductive Layers

Surface Morphology Analysis of Knit Structure-Based Triboelectric Nanogenerator for Enhancing the Transfer Charge

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