1D-2D nanohybrid-based textile strain sensor to boost multiscale deformative motion sensing performance

Li, Xiaoting; Koh, Keng Huat; Xue, Jiaqi; So, Chun Ho; Xiao, Na; Tin, Chung; Wai, King; Lai, Chiu Han

doi:10.1007/s12274-022-4413-4

Cited by 22 publications

(7 citation statements)

References 39 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…According to Kirchhoff's current and voltage law, the equivalent resistance of the topology model and the corresponding equations can be calculated [47]. The total current (I 1 ) in the circuit can be calculated by Matlab, and the equivalent resistance (R) of the knitted strain sensor can be defined as Equation (12), where V is the total voltage that the circuit loads; (I 1 ) is the total current in the circuit.…”

Section: Calculation Of the Equivalent Resistance Based On The Topolo...mentioning

confidence: 99%

“…Knitting fabrics, due to their multifunctional characteristics in terms of elasticity, flexibility, and deformability, are suitable to be employed in wearable garments as body monitoring sensors for movement [ 5 , 6 , 7 ]. Compared to woven and non-woven fabrics, knitting fabrics have unique properties [ 8 , 9 , 10 , 11 , 12 ]. Most textile-based sensors are based on the change in resistance [ 13 , 14 , 15 , 16 ], which can be used to predict fabric deformation and mechanical properties [ 17 , 18 , 19 ].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Dynamic Equivalent Resistance Model of Knitted Strain Sensor under In-Plane and Three-Dimensional Surfaces Elongation

Tian

et al. 2022

Polymers

View full text Add to dashboard Cite

The dynamic equivalent resistance is a major index that determines the sensing performance of knitted strain sensors, and has the characteristics of in-plane and three-dimensional curved strain sensing. Therefore, in addition to establishing the in-plane equivalent resistance, it is necessary to establish a three-dimensional equivalent resistance model to fully explain the surface sensing performance. This project establishes two equivalent resistance models of knitted strain sensors under in-plane deformation and one equivalent resistance model of three-dimensional curved surface strain. Based on the length of resistance and the geometric topological structure, an in-plane strain macro–micro equivalent resistance model and a topological equivalent resistance model are established, respectively. In addition, a three-dimensional curved surface equivalent resistance model is created based on the volume resistance. By comparing the theoretical model with the experimental data, the results prove that the proposed in-plane and three-dimensional models can be utilized to calculate the resistance change of knitted strain sensors. Length resistance, coil transfer, and curved surface deformation depth are the main factors that affect the equivalent resistance of knitted strain sensors.

show abstract

Section: Calculation Of the Equivalent Resistance Based On The Topolo...mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Dynamic Equivalent Resistance Model of Knitted Strain Sensor under In-Plane and Three-Dimensional Surfaces Elongation

Tian

et al. 2022

Polymers

View full text Add to dashboard Cite

show abstract

“…Similarly, improvement of the strain range of the strain sensor can also be achieved through structural design. For instance, Li et al 19 designed a crepe roll structure strain sensor based on textile yarns with silver nanowires (AgNWs) as a bridge to improve the sensing range. Gao et al 20 significantly improved by winding highly stretch-sensitive carbon nanotubes onto polyurethane (PU) fibers through a simple twisting strategy.…”

Section: Introductionmentioning

confidence: 99%

Highly Stretchable and Fluorescent Visualizable Thermoplastic Polyurethane/Tetraphenylethylene Plied Yarn Strain Sensor with Heterogeneous and Cracked Structure for Human Health Monitoring

Ai,

Wang,

et al. 2023

ACS Appl. Mater. Interfaces

View full text Add to dashboard Cite

Smart wearable technology has been more and more widely used in monitoring and prewarning of human health and safety, while flexible yarn-based strain sensors have attracted extensive research interest due to their ability to withstand greater external strain and their significant application potential in realtime monitoring of human motion and health signals. Although several strain sensors based on yarn structures have been reported, it remains challenging to strike a balance between high sensitivity and wide strain ranges. At the same time, visual signal sensing is expected to be used in strain sensors thanks to its intuitiveness. In this work, thermoplastic polyurethane (TPU) and tetraphenylethylene (TPE) were wet-spun to fabricate flexible fluorescent fibers used as the substrate of the sensor, followed by the drop addition of polydimethylsiloxane (PDMS) beads and curing to produce a heterogeneous structure, which were further twisted into a plied yarn. Finally, a visualizable flexible yarn strain sensor based on solidified liquid beads and crack structure was obtained by loading polydopamine (PDA) and polypyrrole (PPy) in situ. The sensor exhibited high sensitivity (the GF value was 58.9 at the strain range of 143−184%), a wide working strain range (0−184%), a low monitoring limit (<0.1%), a fast response (58.82 ms), reliable responses at different frequencies, and excellent cycle durability (over 2000 cycles). At the same time, the yarn strain sensor also had excellent photothermal characteristics and a fluorescence crack visualization effect. These attractive advantages enabled yarn strain sensors to accurately monitor various human activities, showing great application potential in health monitoring, personalized medical diagnosis, and other aspects.

show abstract

“…[16][17][18][19] Therefore, textile based sensors with the advantages of lightweight and flexibility are emerging rapidly. [20][21][22][23][24][25][26] Up to now, a wide range of textile-based sensors have been proposed, [27] including fiber/yarn structured sensors, [28][29][30][31] fabric structured sensors [32][33][34][35][36][37][38][39] and nanofiber structured sensors. [40,41] They can detect both strain and compressive deformation of a flexible material, allowing researchers to more accurately examine the physical signals generated by the human body.…”

Section: Introductionmentioning

confidence: 99%

Pressure and Electromechanical Behaviors of Elastic Pressure Exerting and Sensing Fabrics for Monitoring Pressure of Compression Textiles

Yang

Niu

et al. 2023

Adv Materials Technologies

View full text Add to dashboard Cite

Sensing fabrics have received great attention due to various applications in medical area, healthcare, and smart clothes. However, there are very few studies on sensing fabrics that can be used to monitor the pressure of compression garments. In this study, a pressure exerting and sensing fabric is fabricated by interweaving highly sensitive yarn sensor into woven fabric using industrial-scale weaving technology. By using a new method for measuring the pressure sensing capabilities under external stresses from a curved surface, effects of fabric structure and operation mode on the pressure and electromechanical properties are evaluated. New fabric structures are proposed to deliberately arrange the yarn sensing elements in a less-or even non-binding form within the fabric for good elasticity and sensing properties. Arising from the appropriate material selection and structure feature, the sensing fabric realizes a suitable and stable amount of induced pressure as well as very low stress relaxation. Consequently, the sensing fabric with sateen structure demonstrates very good pressure sensing performance with sensitivity of 1.22 kPa −1 , low hysteresis error of 8.06%, and linearity of 0.98 in the desired pressure range from 0.58 to 3.83 kPa. Furthermore, the fabric exhibits excellent stability over 4500 pressing cycles.

show abstract

1D-2D nanohybrid-based textile strain sensor to boost multiscale deformative motion sensing performance

Cited by 22 publications

References 39 publications

Dynamic Equivalent Resistance Model of Knitted Strain Sensor under In-Plane and Three-Dimensional Surfaces Elongation

Dynamic Equivalent Resistance Model of Knitted Strain Sensor under In-Plane and Three-Dimensional Surfaces Elongation

Highly Stretchable and Fluorescent Visualizable Thermoplastic Polyurethane/Tetraphenylethylene Plied Yarn Strain Sensor with Heterogeneous and Cracked Structure for Human Health Monitoring

Pressure and Electromechanical Behaviors of Elastic Pressure Exerting and Sensing Fabrics for Monitoring Pressure of Compression Textiles

Contact Info

Product

Resources

About