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Electrospun Nanofbers have been widely used in flexible biomechanical sensors in recent years due to their lightweight, compatibility, breathability, mechanical deformability and functional integrability, which are sensitive and multifunctional. With the continuous progress of the digital era, the existing electrostatically spun flexible sensors can no longer meet the demands of multi-scenario applications such as wearable electronics, interactive interfaces and real-time continuous health monitoring.
Recently, Prof. Xinyu Hu from Hubei University of Technology and Prof. Yong Liu from Beijing University of Chemical Technology have collaborated to publish a review focusing on the design, preparation and optimisation of flexible biomechanical sensors based on electrostatically spun polymers. The research was published in the journal ACS Applied Polymer Materials under the title ‘Electrospun Micro/Nanofiber-Based Biomechanical Sensors’.
1.The design method of electrospun flexible biomechanical sensors based on the working mechanism is briefly introduced.
2.Two preparation strategies, direct electrostatic spinning and post-processing-assisted electrospinning, are discussed in detail.
3.In addition, four methods to optimise the performance of electrospun flexible biomechanical sensors and to give them multifunctionality are demonstrated from the processing point of view.
4.Challenges and potential solutions related to this topic are presented, providing new ideas for the next generation of electrospun flexible biomechanical sensors.
The main conclusions and insights presented in this paper:
1.The demand for flexible biomechanical sensors is on the rise, leading to higher expectations of utility, flexibility, durability, and biocompatibility.
2.Electrospun Nanofbers offer high sensitivity and versatility for sensors due to their lightweight, compatibility, breathability, and mechanical deformability.
3.Strategies to optimise the performance of flexible biomechanical sensors include microengineering, structural form design, electrode configuration and the combination of new functional materials.
4.Electrospun Nanofbers are a promising technique for the preparation of flexible biomechanical sensors due to their versatility and cost-effectiveness.
5.Flexible pressure sensors have become an important part of wearable electronic devices due to their simple structure, high sensitivity and stable output.
Conclusions
Electrospun Nanofbers show great potential for the preparation of next-generation flexible biomechanical sensors. In this paper, recent advances in the design, preparation and optimisation of electrospun flexible biomechanical sensors are reviewed. Despite the great achievements, challenges in material systems, sensing range, multifunctionality and scale-up production still hinder the practical application of electrospun flexible biomechanical sensors.
1. Raw material optimisation:
It is noted that the performance of electrospun flexible biomechanical sensors is largely dependent on the raw materials used. Although significant progress has been made in incorporating functional nanofillers into electrospun polymer micro/nanofibres, the optimal combination of filler type and dosage to achieve excellent performance is still under investigation.
2. Expanding the sensing range:
Currently, the development of electrospun flexible biomechanical sensors capable of detecting both small- and large-scale motions is one of the biggest obstacles to their further development. For example, small-scale motions such as pulse beating require sensors with high sensitivity and ultra-low detection limits.
3. Multifunctionality:
Electrospun flexible biomechanical sensors need to exhibit multifunctionality beyond a single sensing mode. For example, they not only need to sense mechanical stimuli, temperature, humidity and ambient gas detection, but also need to incorporate self-repair, electromagnetic shielding or other functions.
4. Scale-up:
Most of the current research on electrospun flexible biomechanical sensors remains at the experimental stage. Therefore, there is an urgent need to explore the commercialisation route of electrospun flexible biomechanical sensors.
Originallink: https://doi.org/10.1021/acsapm.3c01308
