A highly aligned microgrid structure for wearable nanofibrous sensors with an enhanced sensitivity and detection range

Wang, Mingxu; Wu, Jiajia; Li, Dong; Shi, Jian; Gao, Qiang; Zhu, Chunhong; Morikawa, Hideaki

doi:10.1039/d2tc02344j

Cited by 10 publications

(18 citation statements)

References 33 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…As shown in Figure 5h, when a finger was rapidly pressed on and off the sensor, the response and recovery times were 100 and 70 ms, respectively, which are closer to the response time of human skin (30−50 ms), indicating a low hysteresis. 56 A comparison of the sensitivity and sensing range of the sensors reported in the previous work 13,15,22,26,34,36,39,[41][42][43]54 is given in Figure 5i, where it is found that the AgNPs/TPU pressure sensor had a relatively higher sensitivity and wider detection range. For a clearer comparison, the sensitivity and detection range of various microstructured sensors are given in Table S2.…”

Section: ■ Results and Discussionmentioning

confidence: 93%

“…The construction of hierarchical or microstructure can effectively improve the sensitivity and detection range, as a single microstructure is often affected by the deformation of the micropatterned structure, which improves the sensitivity at the low-pressure range but limits the sensitivity at high pressures. For instance, Wang et al 36 combined the techniques of template-based electrospinning and coating to develop a simple microgrid-like Ag/MXenemodified nanofibrous membrane. Based on this, a flexible pressure sensor with hierarchical microstructures was further assembled.…”

Section: ■ Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Electrically Conductive AgNPs/TPU-Electrospun Fibers with Hierarchical Microstructures by a One-Step Method for a High-Performance Flexible Pressure Sensor

Wang,

Ma,

et al. 2023

ACS Appl. Electron. Mater.

View full text Add to dashboard Cite

To obtain flexible pressure sensors with simple preparation process, high sensitivity, fast response time, wide detection range, and good stability at the same time is still a great challenge. Herein, silver trifluoroacetate (C 2 AgF 3 O 2 ) was introduced into thermoplastic polyurethane (TPU)-electrospun solution, and a C 2 AgF 3 O 2 /TPU nanofiber film with hierarchical microstructure was prepared by "one-step" electrostatic spinning. Then, the conductive silver nanoparticle/TPU composite nanofiber film was obtained after the reduction of the C 2 AgF 3 O 2 /TPU nanofiber film. The hierarchical microstructure of the nanofiber film consists of tiny bumps with varying heights on the surface and holes with different sizes inside, which achieves a wide detection range of 0−100 kPa and a high sensitivity of 7.51 kPa −1 . In addition, the response time and recovery time are 100 and 70 ms, respectively, and the stability of the sensor is still high even after 1000 test cycles of testing. The developed sensors show good sensing performance in the monitoring of pulse, finger movement, Morse code, and other signals, proving that they have a broad application prospect in human motion detection and wearable devices.

show abstract

Section: ■ Results and Discussionmentioning

confidence: 93%

Section: ■ Introductionmentioning

confidence: 99%

Electrically Conductive AgNPs/TPU-Electrospun Fibers with Hierarchical Microstructures by a One-Step Method for a High-Performance Flexible Pressure Sensor

Wang,

Ma,

et al. 2023

ACS Appl. Electron. Mater.

View full text Add to dashboard Cite

show abstract

“…From Figure e, we can see that the SILB pressure sensor with a steady and consistent performance after 6250 time pressure loadings of 0.25 kPa, which is a critical attribute for the pressure sensor to be applied in various circumstances. In Figure f, the pressure detection range and sensitivity of the SILB pressure sensor are compared to those of recently reported piezoresistive sensors. ,− By contrast, it is demonstrated that the SILB pressure sensor has a considerable advantage in both response range and sensitivity to better fulfill the application requirements.…”

Section: Resultsmentioning

confidence: 99%

Synthesis of Poly(ether carbonate)-Based Polyurethane for Biodegradable–Recyclable Pressure Sensors

Liu

Wang

Liu

et al. 2023

ACS Sustainable Chem. Eng.

View full text Add to dashboard Cite

Developing biodegradable and recyclable pressure sensors is quite important to broaden their application fields and reduce adverse environmental impact. However, the relevant research in this area is still limited. In this work, a biodegradable and recyclable pressure sensor was proposed by employing biodegradable polyurethanes. The poly(ether carbonate) diol (PEC) with 40% biodegradable groups (carbonate groups) was polymerized with isophorone diisocyanate and butane-1,4-diol to produce a biodegradable PEC-based polyurethane (BPPU) (M n = 5.89 × 10 4 g/mol). Structural analysis of the products was conducted by 1 H NMR and FTIR spectroscopy. The DSC results indicated that the glass-transition temperature of BPPU was −24 °C. In particular, the obtained BPPU showed an excellent biodegradation rate in the soil compared to previously reported polyurethanes, with 72.88% degradation in 103 days. BPPU working as the substrate of a pressure sensor presented high sensitivity (S = 41.29 kPa −1 ), a wide response range (0.62−62.5 kPa), and good durability (6250 cycles). The sensor displayed not only the capability to detect signals of human breathing, joint movements, and writing but also the recyclability of silver interdigital electrodes. At present, the synthesized BPPU shows broad application prospects in flexible sensors with promising low-temperature resistance, biodegradability, and flexibility.

show abstract

“…Flexible piezoresistive micro-pressure sensors have promising applicable potential because of their simple structure, facile materials preparation, low cost, and other merits. [125][126][127] Graphene, carbon nanobers and carbon nanotubes (CNTs) are the most common conductive materials for preparing piezoresistive pressure sensors. 128 These sensors have high sensitivity, great stretchability, good exibility, and excellent stability, and are suitable for micro-pressure detection in different application scenarios.…”

Section: Triboelectric Micro-pressure Sensorsmentioning

confidence: 99%

Recent progress in flexible micro-pressure sensors for wearable health monitoring

Dun

Geng

et al. 2023

Nanoscale Adv.

View full text Add to dashboard Cite

show abstract

A highly aligned microgrid structure for wearable nanofibrous sensors with an enhanced sensitivity and detection range

Abstract: Interface features are of great significance to mainstream piezoresistive sensors. Various novel hierarchical microstructures (HMs) are developed to improve the sensitivity, limit and detection range, however, the fabrication of highly...

Cited by 10 publications

References 33 publications

Electrically Conductive AgNPs/TPU-Electrospun Fibers with Hierarchical Microstructures by a One-Step Method for a High-Performance Flexible Pressure Sensor

Electrically Conductive AgNPs/TPU-Electrospun Fibers with Hierarchical Microstructures by a One-Step Method for a High-Performance Flexible Pressure Sensor

Synthesis of Poly(ether carbonate)-Based Polyurethane for Biodegradable–Recyclable Pressure Sensors

Recent progress in flexible micro-pressure sensors for wearable health monitoring

Contact Info

Product

Resources

About