Ultrastretchable Multilayered Fiber with a Hollow-Monolith Structure for High-Performance Strain Sensor

Gao, Jian; Wang, Xiaozheng; Zhai, Wei; Liu, Hu; Zheng, Guoqiang; Dai, Kun; Mi, Liwei; Liu, Chuntai; Shen, Changyu

doi:10.1021/acsami.8b11527

Cited by 96 publications

(69 citation statements)

References 52 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This is because high content of MWCNT caused serious agglomeration due to the strong Van der Waals force and limited the movement of SBS molecular chains. [ 19 ] Although SSCCSF‐13 has the lowest tensile strength and elongation at break, it is still within a reasonable level for stretchable strain sensors. [ 32,33 ]…”

Section: Resultsmentioning

confidence: 99%

“…Microstructural design including multilayer structures and hollow‐monolith structures is considered as an effective method to obtain high‐performance strain sensor. [ 19,20 ] Among them, the core‐sheath structure with various performances in different layers have attracted widespread attention for fabricating flexible sensors in recent years. [ 21,22 ]…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Core–Sheath Fiber‐Based Wearable Strain Sensor with High Stretchability and Sensitivity for Detecting Human Motion

Zhou

Wang

et al. 2020

Adv Elect Materials

View full text Add to dashboard Cite

Fiber‐based strain sensors are considered to be an important part of smart wearables due to their flexible performance, lightness, and easily processing into various structures. However, the low sensitivity of fiber‐based strain sensors has limited their real‐life applications for detecting human movements. In this work, a poly(styrene‐butadiene‐styrene) (SBS)/multi‐walled carbon nanotube (MWCNTs) core–sheath fiber (SSCCSF) strain sensor is fabricated via a simple and facile coaxial wet‐spinning method. The cross‐sectional morphology, the mechanical properties, and the electromechanical performance of the SSCCSFs are investigated. Scanning electron microcopy results show that SSCCSFs have a bean‐like cross‐section with SBS as the core and SBS/MWCNTs as the sheath. Electromechanical performance evaluation confirms that the SSCCSF show a high sensitivity in a broad working range (gauge factor = 25832.77 at 41.5% strain) and excellent durability (5000 cycles at 10% strain). Furthermore, the SSCCSF displays outstanding sensing performance for detecting large motions in human movements including hand joint bending (such as knuckles and wrists) and subtle motions in physiological activities, involved in swallowing behavior, breathing, and pulse beat. This study demonstrates the potential application of SSCCSFs for wearable electronics with activity monitoring sensors.

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Core–Sheath Fiber‐Based Wearable Strain Sensor with High Stretchability and Sensitivity for Detecting Human Motion

Zhou

Wang

et al. 2020

Adv Elect Materials

View full text Add to dashboard Cite

show abstract

“…Durability is an another significant index for actual application of flexible strain sensors, as excellent durability can reduce the economic cost and increase popularity. [38][39][40] As shown in Figure 7c, the MCTF strain sensor shows significant stability and repeatability during 10 000 cycles (strain 50% at a rate of 100 mm min −1 ). The inset of Figure 7c presents several loadingunloading cycles (101-110, 5001-5010, 9001-9010 cycles) extracted from 10 000 cycles.…”

Section: Resultsmentioning

confidence: 99%

Ultra‐Stretchable Porous Fiber‐Shaped Strain Sensor with Exponential Response in Full Sensing Range and Excellent Anti‐Interference Ability toward Buckling, Torsion, Temperature, and Humidity

Zhai

Yun

et al. 2019

Adv Elect Materials

Self Cite

View full text Add to dashboard Cite

transistors, [5,6] flexible displays, [7,8] energy devices, [9][10][11] mechanical sensors, [12][13][14][15][16] etc. Stretchable conductive fibrous composites as a vital part of stretchable devices are very promising for wearable electronics in the near future as they can be easily manufactured in abundance and facilely knitted into garments. [17,18] Currently, stretchable fibers are requested to possess high sensitivity and stretchability to meet the applications such as health monitoring, and e-skins. [19,20] Here, the main arguments accounting for the properties of strain sensors are sensitivity, stretchability, and stability.Fibrous strain sensors have gained great development on the tuning of microstructure and sensing properties, recently. [21] Zhang et al. prepared a carbonized silk fiber as the main component of a wearable and ultra-stretchable strain sensor (500% workable strain). [22] Compared with the natural stretchable fibers, wet-spinning is a universal method for industrial manufacture of serial fibers for many decades, providing a general strategy for producing high performance fibers. [23] Previously, Tang et al. constructed an Ecoflex/multi-walled carbon nanotubes (MWCNTs) coresheath fiber, which exhibited high stretchability (above 300% strain), good stability (over 10 000 cycles), low hysteresis, and favorable hydrophobicity. [20] Lee et al. fabricated a thermoplastic As a crucial element for wearable devices, high-performance strain sensors have been spotlighted as an ideal strategy to develop machine-human interfaces and healthcare systems. It still remains a huge challenge to construct flexible strain sensors with equational response in a broad range. Herein, highly stretchable multi-walled carbon nanotubes (MWCNTs)-decorated thermoplastic polyurethane (TPU) fibers with a porous microstructure are produced through a scalable and facile strategy by wet-spinning and ultrasonication. The fiber is composed of pure TPU fibers with MWCNTs decorated on the surface. The porous fiber is then assembled as a strain sensor. Interestingly, the effective MWCNTs distribution on the TPU fiber enables exponential sensing over the whole strain range. The sensor possesses a high gauge factor (GF, 102 at 300% strain), very large workable sensing range (300% strain), excellent durability (10 000 cycles), light weight (0.85 g cm −3 ), and fast response (200 ms). The as-prepared strain sensor exhibits excellent insensitive properties toward buckling, torsion, temperature, and humidity stimuli. Based on the high sensing performance, the fiber-shaped strain sensor detects human movements precisely by directly attaching to skin or embedding in garments, demonstrating huge potential in human-machine interfaces, health monitoring application, etc.Recently, stretchable devices have attracted lots of researchers on the basis of their significant impact and promotion in various fields, including wearable electronics, [1,2] actuators, [3,4] Adv.

show abstract

“…Zhu et al reported finger‐monitoring sensors based on the conductive yarns with the deposited Pd nanoparticles, and the yarns have also been sewed into the gloves in the linear‐type. In another work, ultra‐stretchable polyurethane (PU)/carbon nanotubes composite filament with a hollow‐monolith structure have been utilized for strain sensing the physical movement, and the fiber bundles were directly bonded on the wrist, knee, or outside the T‐shirt as the functional bandage . All of these 1D fiber‐shape strain sensors, however, act as the independent devices or the accessories of clothes, still making some unsatisfactory, uncomfortable, and complicated sensing system, even cannot be named as “really” wearable devices.…”

Section: Introductionmentioning

confidence: 99%

“…In another work, ultra-stretchable polyurethane (PU)/carbon nanotubes composite filament with a hollow-monolith structure have been utilized for strain sensing the physical movement, and the fiber bundles were directly bonded on the wrist, knee, or outside the T-shirt as the functional bandage. [19] All of these 1D fiber-shape strain sensors, however, act as the independent devices or the accessories of clothes, still making some unsatisfactory, uncomfortable, and complicated sensing system, even cannot be named as "really" wearable devices. Thus, it is highly desirable to integrate sensors and clothes into one system, toward compact smart clothes with selfsensing performance.…”

Section: Introductionmentioning

confidence: 99%

Stretchable and Designable Textile Pattern Strain Sensors Based on Graphene Decorated Conductive Nylon Filaments

Tian

Zhao

et al. 2019

Macro Materials & Eng

View full text Add to dashboard Cite

Flexible sensors with stretchable and wearable characteristics have boosted wide interest in human motion detection and physiological signal monitoring. However, the majority of current sensors suffer from the lack of seamlessly integrated with clothes substrates, hindering their applications as “real” wearable devices. Herein, a facile low‐cost and scalable continuous capillary dip coating route is employed to deposit graphene inks onto nylon filaments to obtain graphene decorated nylon conductive filaments. The filaments exhibit noticeable promotion in electrical conductivity with remarkable laundry durability, and the electrical conductivity of our filaments could be up to 6.43 and 2.78 S m−1 before and after washing 10 times, respectively. Two kinds of conventional textile formation techniques, sewing and knitting, are utilized to form various textile pattern strain sensors from the conductive filaments as the building blocks, such as the linear‐type, knitted‐loop‐type, snail‐coil‐type sewed sensors and the tubular knitted fabric sensors respectively. The textile sensors with different patterns exhibited various sensing response, the knitted‐loop‐type sensor could reach the maximum strain 45.69% while the linear‐type one arrives at 13.64%. In addition, the above strain sensors exhibit high sensitivity and repeatability when monitoring the limb movement and human breathing.

show abstract

Ultrastretchable Multilayered Fiber with a Hollow-Monolith Structure for High-Performance Strain Sensor

Cited by 96 publications

References 52 publications

Core–Sheath Fiber‐Based Wearable Strain Sensor with High Stretchability and Sensitivity for Detecting Human Motion

Core–Sheath Fiber‐Based Wearable Strain Sensor with High Stretchability and Sensitivity for Detecting Human Motion

Ultra‐Stretchable Porous Fiber‐Shaped Strain Sensor with Exponential Response in Full Sensing Range and Excellent Anti‐Interference Ability toward Buckling, Torsion, Temperature, and Humidity

Stretchable and Designable Textile Pattern Strain Sensors Based on Graphene Decorated Conductive Nylon Filaments

Contact Info

Product

Resources

About