Recent advancements in self-healing composite elastomers for flexible strain sensors: Materials, healing systems, and features

Ma, Zhenping; Li, Heng; Jing, Xin; Liu, Yuejun; Mi, Hao‐Yang

doi:10.1016/j.sna.2021.112800

Cited by 45 publications

(31 citation statements)

References 128 publications

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“…The Raman spectra of the Ag NW10/PEDOT:PSS/PI aerogel in Figure 4c showed the characteristic signal peaks of Ag NWs, PEDOT:PSS, and PI at the same time, which proved the existence of three materials in the composite. At the same time, the characteristic peaks of PEDOT:PSS in the Ag NW10/ PEDOT:PSS/PI aerogel shifted from 1260, 1360, and 1420 to 1268 1 , 1369, and 1424 cm −1 , which further confirmed that there was a certain interaction between the components. FTIR curves in Figure 4d was used to further study this interaction.…”

Section: Resultsmentioning

confidence: 53%

“…Owing to the characteristic of miniaturization and intelligentization, flexible strain sensors have attracted extensive attention in recent years. − Among them, piezoelectric sensors can meet the demand of the induction smile, heart rate, breathing, and other small activities due to their high spatial resolution with a simple input/output control system and low noise sensitivities. As a result, piezoelectric sensors have attracted more attention of strain sensors.…”

Section: Introductionmentioning

confidence: 99%

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Lightweight and Elastic Silver Nanowire/PEDOT:PSS/Polyimide Aerogels for Piezoresistive Sensors

Wang

Yue

et al. 2022

ACS Appl. Polym. Mater.

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Flexible piezoresistive sensors have been widely used in the fields of wearable electronic devices, electronic skin, intelligent human−computer interaction, health monitoring, life medicine research, intelligent robot, and so on. However, how to find a balance between stability, sensitivity, and sensing range, especially under the low-pressure range, is still an immediate challenge waiting to be solved. Herein, a highly flexible and compressible aerogel with a smooth layer structure was successfully fabricated by combining Ag nanowires into poly(3,4-ethylenedioxythiophene):polystyrene sulfonate and polyimide composites by casting and thermal annealing. As a result, the elastic aerogel with large reversible compressibility exhibited a good compression sensitivity of 0.31 kPa −1 in the pressure range of 0−1.25 kPa, high linearity of compression strain and resistance change rate, great fatigue resistance (height retention of 98−99% at 1000% strain/min), and large reversible compressibility (height retention of 90% after 200 compression cycles). The excellent performance of conductive aerogels shows their promising potential in the field of piezoelectric sensing.

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Section: Resultsmentioning

confidence: 53%

Section: Introductionmentioning

confidence: 99%

Lightweight and Elastic Silver Nanowire/PEDOT:PSS/Polyimide Aerogels for Piezoresistive Sensors

Wang

Yue

et al. 2022

ACS Appl. Polym. Mater.

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“…The number of published data is somewhat limited. However, considering current trends in the development of advanced elastomers [278][279][280], it seems that applying GTR into material or composites with special or unique properties is a promising approach for waste tire upcycling, which should be explored in the near future.…”

Section: Sustainable Development Of Advancedmentioning

confidence: 99%

Recent Advances in Development of Waste-Based Polymer Materials: A Review

2022

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Limited petroleum sources, suitable law regulations, and higher awareness within society has caused sustainable development of manufacturing and recycling of polymer blends and composites to be gaining increasing attention. This work aims to report recent advances in the manufacturing of environmentally friendly and low-cost polymer materials based on post-production and post-consumer wastes. Sustainable development of three groups of materials: wood polymer composites, polyurethane foams, and rubber recycling products were comprehensively described. Special attention was focused on examples of industrially applicable technologies developed in Poland over the last five years. Moreover, current trends and limitations in the future “green” development of waste-based polymer materials were also discussed.

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“…Recent studies have incorporated conductive polymers as a replacement for conductive particles [18][19][20]; this is a desirable characteristic given the toxicity of graphene, carbon nanotubes (CNTs), and carbon black (CB) [21]. Similarly, the introduction of self-healing properties to the nanocomposite has been also studied by multiple authors [22][23][24]. Previous authors' works have mainly focused on: first, improving the performance of FSRs by studying the effect of source voltage in the repeatability of measurements [25], and second, developing tailored driving circuits that can help us to minimize time drift and electrical hysteresis [26].…”

Section: Introductionmentioning

confidence: 99%

Enhancing Part-to-Part Repeatability of Force-Sensing Resistors Using a Lean Six Sigma Approach

et al. 2022

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Polymer nanocomposites have found wide acceptance in research applications as pressure sensors under the designation of force-sensing resistors (FSRs). However, given the random dispersion of conductive nanoparticles in the polymer matrix, the sensitivity of FSRs notably differs from one specimen to another; this condition has precluded the use of FSRs in industrial applications that require large part-to-part repeatability. Six Sigma methodology provides a standard framework to reduce the process variability regarding a critical variable. The Six Sigma core is the DMAIC cycle (Define, Measure, Analyze, Improve, and Control). In this study, we have deployed the DMAIC cycle to reduce the process variability of sensor sensitivity, where sensitivity was defined by the rate of change in the output voltage in response to the applied force. It was found that sensor sensitivity could be trimmed by changing their input (driving) voltage. The whole process comprised: characterization of FSR sensitivity, followed by physical modeling that let us identify the underlying physics of FSR variability, and ultimately, a mechanism to reduce it; this process let us enhance the sensors’ part-to-part repeatability from an industrial standpoint. Two mechanisms were explored to reduce the variability in FSR sensitivity. (i) It was found that the output voltage at null force can be used to discard noncompliant sensors that exhibit either too high or too low sensitivity; this observation is a novel contribution from this research. (ii) An alternative method was also proposed and validated that let us trim the sensitivity of FSRs by means of changing the input voltage. This study was carried out from 64 specimens of Interlink FSR402 sensors.

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Recent advancements in self-healing composite elastomers for flexible strain sensors: Materials, healing systems, and features

Cited by 45 publications

References 128 publications

Lightweight and Elastic Silver Nanowire/PEDOT:PSS/Polyimide Aerogels for Piezoresistive Sensors

Lightweight and Elastic Silver Nanowire/PEDOT:PSS/Polyimide Aerogels for Piezoresistive Sensors

Recent Advances in Development of Waste-Based Polymer Materials: A Review

Enhancing Part-to-Part Repeatability of Force-Sensing Resistors Using a Lean Six Sigma Approach

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