Human skin interactive self-powered wearable piezoelectric bio-e-skin by electrospun poly-<scp>l</scp>-lactic acid nanofibers for non-invasive physiological signal monitoring

Sultana, Ayesha; Ghosh, Sujoy Kumar; Sencadas, Vítor; Zheng, Tian; Higgins, Michael J.; Middya, Tapas Ranjan

doi:10.1039/c7tb01439b

Cited by 118 publications

(108 citation statements)

References 57 publications

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“…Figure d (left) presents PLLA in the α‐crystalline form (thermodynamically stable conformation), where the CO dipoles are randomly oriented along the main chain. In order to induce piezoelectricity, the chains must be thermally stretched to transform the α‐crystalline form into β‐crystalline form, which represents a change from randomly oriented molecular chains to molecular chains being aligned along the stretched direction . The electrospinning process can also align the CO bond to create piezoelectric PLLAs as seen in Figure d (right).…”

Section: Mechanisms Of Piezoelectricity In Inorganic and Organic Matementioning

confidence: 99%

Piezoelectric Biomaterials for Sensors and Actuators

et al. 2018

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Recent advances in materials, manufacturing, biotechnology, and microelectromechanical systems (MEMS) have fostered many exciting biosensors and bioactuators that are based on biocompatible piezoelectric materials. These biodevices can be safely integrated with biological systems for applications such as sensing biological forces, stimulating tissue growth and healing, as well as diagnosing medical problems. Herein, the principles, applications, future opportunities, and challenges of piezoelectric biomaterials for medical uses are reviewed thoroughly. Modern piezoelectric biosensors/bioactuators are developed with new materials and advanced methods in microfabrication/encapsulation to avoid the toxicity of conventional lead‐based piezoelectric materials. Intriguingly, some piezoelectric materials are biodegradable in nature, which eliminates the need for invasive implant extraction. Together, these advancements in the field of piezoelectric materials and microsystems can spark a new age in the field of medicine.

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Section: Mechanisms Of Piezoelectricity In Inorganic and Organic Matementioning

confidence: 99%

Piezoelectric Biomaterials for Sensors and Actuators

et al. 2018

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“…[7,8] Electronic skins are composed of flexible sensor arrays that can be directly mounted on the human skin for real-time tactile sensing and biomechanical activity monitoring. [9] However, significant limitations in such wearable technology still exist due to the large dependence on external power supply. For example, driving these wearable tactile sensors completely by traditional batteries has become increasingly impractical, [10] since batteries may cause health hazard owing to the possible electrolyte leaking or contamination.…”

mentioning

confidence: 99%

All‐Fiber Structured Electronic Skin with High Elasticity and Breathability

Zhu

Shen

et al. 2019

Adv Funct Materials

189

161

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With the rapid advancement in artificial intelligence, wearable electronic skins have attracted substantial attention. However, the fabrication of such devices with high elasticity and breathability is still a challenge and highly desired. Here, a route to develop an all-fiber structured electronic skin with a scalable electrospinning fabrication technique is reported. The fabricated electronic skin is demonstrated to exhibit high pressure sensing with a sensitivity of 0.18 V kPa −1 in the detection range of 0-175 kPa. This wearable device could maintain prominent sensing performance and mechanical stability in the presence of large deformation, even when the elastic deformation is up to 50%. The electronic skin is easily conformable on different desired objects for real-time spatial mapping and long-term tactile sensing. Besides, it possesses high gas permeability with a water vapor transmittance rate of 10.26 kg m −2 d −1 . More importantly, the electronic skin is capable of working in a self-powered manner and even serves as a reliable power source to effectively drive small electronics. Possessing several compelling features, such as high sensitivity, high elasticity, high breathability as well as being self-powered and scalable in fabrication, the presented device paves a pathway for smart electronic skins.

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Section: Biological Piezoelectric Materialsmentioning

confidence: 99%

“…Other biological piezoelectric materials include polymeric L-lactic acid, DNA, and the M13 bacteriophage [25][26][27]. Like amino acids, the piezoelectricp r o p e r t i e so fl a c t i ca c i dc o m ef r o mt h e carbon-oxygen double bond [25]. DNA's piezoelectric properties originate from internal rotation of the dipoles created by phosphate groups; however, they were primarily observed at lower water content, which makes the bonds holding the DNA helix together weaker [27].…”

Section: Biological Piezoelectric Materialsmentioning

confidence: 99%

Piezoelectric Materials for Medical Applications

Chen-Glasser¹,

Li²,

Ryu³

et al. 2018

Piezoelectricity - Organic and Inorganic Materials and Applications

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This chapter describes the history and development strategy of piezoelectric materials for medical applications. It covers the piezoelectric properties of materials found inside the human body including blood vessels, skin, and bones as well as how the piezoelectricity innate in those materials aids in disease treatment. It also covers piezoelectric materials and their use in medical implants by explaining how piezoelectric materials can be used as sensors and can emulate natural materials. Finally, the possibility of using piezoelectric materials to design medical equipment and how current models can be improved by further research is explored. This review is intended to provide greater understanding of how important piezoelectricity is to the medical industry by describing the challenges and opportunities regarding its future development.

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Human skin interactive self-powered wearable piezoelectric bio-e-skin by electrospun poly-l-lactic acid nanofibers for non-invasive physiological signal monitoring

Abstract: An electrospun PLLA fiber based flexible, piezoelectric bio-e-skin that can detect human physiological signals is presented.

Cited by 118 publications

References 57 publications

Piezoelectric Biomaterials for Sensors and Actuators

Piezoelectric Biomaterials for Sensors and Actuators

All‐Fiber Structured Electronic Skin with High Elasticity and Breathability

Piezoelectric Materials for Medical Applications

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