Piezoelectric fiber composites with polydopamine interfacial layer for self-powered wearable biomonitoring

Su, Yuanjie; Li, Weixiong; Liu, Yuan; Chen, Chunxu; Pan, Hong; Xie, Guangzhong; Conta, Giorgio; Ferrier, Susanna; Zhao, Xun; Chen, Guorui; Tai, Huiling; Jiang, Yadong; Chen, Jun

doi:10.1016/j.nanoen.2021.106321

Cited by 203 publications

(89 citation statements)

References 57 publications

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“…Similar experimental phenomenon with threshold value have been reported in many literatures. 31,32 For example, Su et al introduced small amount of PDA into the polyvinylidene fluoride (PVDF) chains to increases the β phase crystallinity of PVDF. However, excessive addition of PDA into the PVDF matrix will disrupt the orientation and alignment of polymeric chains, reducing β phase crystallinity.…”

Section: Resultsmentioning

confidence: 99%

“…Hence, an optimal PDA volume fraction was observed with maximum β phase content. 31 Hence, AMP3-based sensor (37 wt%) was chosen as a typical example for the subsequent experiments. Fig.…”

Section: Resultsmentioning

confidence: 99%

“…Furthermore, the breathing depth after both walking and running decreased gradually during the ∼30 s monitoring process, indicating the recovering of physical fitness. 31,46 Moreover, the respiratory speed is very significant for patients suffering from lung disease with unstable breathing cycles. To this end, four different respiratory speeds ( i.e.…”

Section: Resultsmentioning

confidence: 99%

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A high-performance humidity sensor based on alkalized MXenes and poly(dopamine) for touchless sensing and respiration monitoring

Zhao

Tian

et al. 2022

J. Mater. Chem. C

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show abstract

Section: Resultsmentioning

confidence: 99%

“…Hence, an optimal PDA volume fraction was observed with maximum β phase content. 31 Hence, AMP3-based sensor (37 wt%) was chosen as a typical example for the subsequent experiments. Fig.…”

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

A high-performance humidity sensor based on alkalized MXenes and poly(dopamine) for touchless sensing and respiration monitoring

Zhao

Tian

et al. 2022

J. Mater. Chem. C

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show abstract

“…Proper functioning of sensors is necessary for the correct functioning of the system itself and the controllers. The importance of sensors and accuracy of measurements is an essential issue in many advanced monitoring systems, e.g., [37][38][39][40].…”

Section: Introductionmentioning

confidence: 99%

Digital Twins in the Practice of High-Energy Physics Experiments: A Gas System for the Multipurpose Detector

Chaber

Domański

Dąbrowski

et al. 2022

Sensors

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The digital twins technology delivers a new degree of freedom into system implementation and maintenance practice. Using this approach, a technological system can be efficiently modeled and simulated. Furthermore, such a twin offline system can be efficiently used to investigate real system issues and improvement opportunities, e.g., improvement of the existing control system or development of a new one. This work describes the development of a control system using the digital twins methodology for a gas system delivering a specific mixture of gases to the time-of-flight (ToF) multipurpose detector (MPD) used during high-energy physics experiments in the Joint Institute for Nuclear Research (Dubna, Russia). The gas system digital twin was built using a test stand and further extended into target full-scale installation planned to be built in the near future. Therefore, conducted simulations are used to validate the existing system and to allow validation of the planned new system. Moreover, the gas system digital twin enables testing of new control opportunities, improving the operation of the target gas system.

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“…However, the rigidness of ferroelectric crystals and ceramics makes them unable to be applied in wearable flexible electronics. In comparison, ferroelectric polymers especially PVDF-based polymers, are optimal candidates for wearable flexible electronics because of their excellent flexibility, low energy consumption, low-cost process [ 24 , 25 , 26 , 27 , 28 , 29 ] and even self-powering ability [ 30 , 31 , 32 , 33 ]. The biggest disadvantage of PVDF-based polymer, however, is its low pyroelectric coefficient and, consequently, low output signal, making it difficult to use them in practical applications like their inorganic counterparts.…”

Section: Introductionmentioning

confidence: 99%

Microstructured PVDF Film with Improved Performance as Flexible Infrared Sensor

Guan

Yang

et al. 2022

Sensors

Self Cite

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Polyvinylidene fluoride (PVDF) is a very promising material for fabricating flexible infrared sensors due to its ferroelectricity as well as excellent flexibility and low fabrication cost. This work focuses on improving PVDF’s pyroelectric performance by creating microstructures in the film. Simulation results suggest that the pyroelectric response of PVDF film can be improved if micro groove, square-pit or sinusoidal patterns are created on the film surface, with the grooved film showing the best pyroelectric performance. Suggested by the simulation results, flexible PVDF samples with groove structure are prepared by casting the precursor solution on the mold with designed patterns. Measurement results demonstrate that the optimal microstructured PVDF film can improve its pyroelectric performance by as high as 146%, which is in good agreement with the simulations. This work provides an innovative way of achieving flexible infrared sensor devices with promoted performance based on pyroelectric polymers.

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Piezoelectric fiber composites with polydopamine interfacial layer for self-powered wearable biomonitoring

Cited by 203 publications

References 57 publications

A high-performance humidity sensor based on alkalized MXenes and poly(dopamine) for touchless sensing and respiration monitoring

A high-performance humidity sensor based on alkalized MXenes and poly(dopamine) for touchless sensing and respiration monitoring

Digital Twins in the Practice of High-Energy Physics Experiments: A Gas System for the Multipurpose Detector

Microstructured PVDF Film with Improved Performance as Flexible Infrared Sensor

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