Smart and Multifunctional Materials Based on Electroactive Poly(vinylidene fluoride): Recent Advances and Opportunities in Sensors, Actuators, Energy, Environmental, and Biomedical Applications

Chemical Reviews, Journal Year: 2023, Volume and Issue: 123(19), P. 11392 - 11487

Published: Sept. 20, 2023

From scientific and technological points of view, poly(vinylidene fluoride), PVDF, is one the most exciting polymers due to its overall physicochemical characteristics. This polymer can crystalize into five crystalline phases be processed in form films, fibers, membranes, specific microstructures, being physical properties controllable over a wide range through appropriate chemical modifications. Moreover, PVDF-based materials are characterized by excellent chemical, mechanical, thermal, radiation resistance, for their outstanding electroactive properties, including high dielectric, piezoelectric, pyroelectric, ferroelectric response, best among systems thus noteworthy an increasing number technologies. review summarizes critically discusses latest advances PVDF copolymers, composites, blends, main characteristics processability, together with tailorability implementation areas sensors, actuators, energy harvesting storage devices, environmental microfluidic, tissue engineering, antimicrobial applications. The conclusions, challenges future trends concerning application also presented.

Language: Английский

---

The Emergence of AI-Based Wearable Sensors for Digital Health Technology: A Review

Sensors, Journal Year: 2023, Volume and Issue: 23(23), P. 9498 - 9498

Published: Nov. 29, 2023

Disease diagnosis and monitoring using conventional healthcare services is typically expensive has limited accuracy. Wearable health technology based on flexible electronics gained tremendous attention in recent years for patient owing to attractive features, such as lower medical costs, quick access data, ability operate transmit data harsh environments, storage at room temperature, non-invasive implementation, mass scaling, etc. This provides an opportunity disease pre-diagnosis immediate therapy. sensors have opened a new area of personalized by accurately measuring physical states biochemical signals. Despite the progress date development wearable sensors, there are still several limitations accuracy collected, precise diagnosis, early treatment. necessitates advances applied materials structures artificial intelligence (AI)-enabled extract target signals accurate clinical decision-making efficient care. In this paper, we review two significant aspects smart sensors. First, offer overview most improving sensor performance physical, chemical, biosensors, focusing materials, structural configurations, transduction mechanisms. Next, use AI combination with big processing, self-learning, power-efficiency, real-time acquisition intelligent sensing platform. Finally, present challenges future opportunities associated

Language: Английский

---

Machine Learning-Enhanced Flexible Mechanical Sensing

Nano-Micro Letters, Journal Year: 2023, Volume and Issue: 15(1)

Published: Feb. 17, 2023

To realize a hyperconnected smart society with high productivity, advances in flexible sensing technology are highly needed. Nowadays, has witnessed improvements both the hardware performances of sensor devices and data processing capabilities device's software. Significant research efforts have been devoted to improving materials, mechanism, configurations systems quest fulfill requirements future technology. Meanwhile, advanced analysis methods being developed extract useful information from increasingly complicated collected by single or network sensors. Machine learning (ML) as an important branch artificial intelligence can efficiently handle such complex data, which be multi-dimensional multi-faceted, thus providing powerful tool for easy interpretation data. In this review, fundamental working mechanisms common types mechanical sensors firstly presented. Then how ML-assisted improves applications other closely-related various areas is elaborated, includes health monitoring, human-machine interfaces, object/surface recognition, pressure prediction, human posture/motion identification. Finally, advantages, challenges, perspectives associated fusion ML algorithms discussed. These will give significant insights enable advancement next-generation sensing.

Language: Английский

---

Novel low-carbon energy solutions for powering emerging wearables, smart textiles, and medical devices

Energy & Environmental Science, Journal Year: 2022, Volume and Issue: 15(12), P. 4928 - 4981

Published: Jan. 1, 2022

Low CO 2 emitting energy extraction techniques and their application in healthcare, textile smart wearables.

Language: Английский

---

A review on flexible wearables – Recent developments in non-invasive continuous health monitoring

Sensors and Actuators A Physical, Journal Year: 2024, Volume and Issue: 366, P. 114993 - 114993

Published: Jan. 2, 2024

Language: Английский

---

Recent progress of bio-based smart wearable sensors for healthcare applications

Materials Today Electronics, Journal Year: 2023, Volume and Issue: 5, P. 100055 - 100055

Published: Aug. 11, 2023

As personal portable devices, wearable sensors supply a leading-edge pathway to diagnose various diseases through actuating biological, physical, and chemical sensing capabilities. This could be commonly carried out via recording continuous real-time of the patient's physiological statuses, as well pathophysiological information. Although sensor technology is in infancy stage, tremendous attempts have been devoted approaching flexible polymeric sensors. Among polymer candidates applicable for synthesizing sensors, bio-based ones piqued more interest due their biocompatibility, biodegradability, eco-friendly features, cost-effectiveness. Additionally, several fabrication techniques professed architect efficient frameworks, such films, hydrogels, aerogels, ferrogels, 3D layers, electrospun mats, textiles. In this review, different mechanisms declared engineer are overviewed. Then, regarding advantages observed polymers, focused studies on natural-based described. Notably, cellulose, chitosan, silk, gelatin, alginate's role functionality highlighted. Accordingly, review has opened new window ahead opportunities based natural polymers. It hoped that generation will launched by combining emerging achievements obtained from employing sustainable green elements miniaturized structures.

Language: Английский

---

Recent progress in conductive electrospun materials for flexible electronics: Energy, sensing, and electromagnetic shielding applications

Chemical Engineering Journal, Journal Year: 2023, Volume and Issue: 465, P. 142847 - 142847

Published: April 10, 2023

Language: Английский

---

Roadmap on energy harvesting materials

Journal of Physics Materials, Journal Year: 2023, Volume and Issue: 6(4), P. 042501 - 042501

Published: March 17, 2023

Abstract Ambient energy harvesting has great potential to contribute sustainable development and address growing environmental challenges. Converting waste from energy-intensive processes systems (e.g. combustion engines furnaces) is crucial reducing their impact achieving net-zero emissions. Compact harvesters will also be key powering the exponentially smart devices ecosystem that part of Internet Things, thus enabling futuristic applications can improve our quality life homes, cities, manufacturing, healthcare). To achieve these goals, innovative materials are needed efficiently convert ambient into electricity through various physical mechanisms, such as photovoltaic effect, thermoelectricity, piezoelectricity, triboelectricity, radiofrequency wireless power transfer. By bringing together perspectives experts in types materials, this Roadmap provides extensive insights recent advances present challenges field. Additionally, analyses performance metrics technologies relation ultimate conversion limits. Building on insights, outlines promising directions for future research fully harness green anytime, anywhere.

Language: Английский

---

3D-printing-assisted flexible pressure sensor with a concentric circle pattern and high sensitivity for health monitoring

Microsystems & Nanoengineering, Journal Year: 2023, Volume and Issue: 9(1)

Published: April 5, 2023

In this study, a flexible pressure sensor is fabricated using polydimethylsiloxane (PDMS) with concentric circle pattern (CCP) obtained through fused deposition modeling (FDM)-type three-dimensional (3D) printer and poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) as the active layer. Through layer-by-layer additive manufacturing, CCP surface generated from thin cone model rough by FDM-type 3D printer. A novel compression method employed to convert shape into planar microstructure above glass transition temperature of polylactic acid (PLA) filament. To endow conductivity, PDMS used replicate compressed PLA, PEDOT:PSS coated drop-casting. The size controlled changing printing layer height (PLH), which one parameters. sensitivity increases PLH increases, 0.16 mm exhibits outstanding (160 kPa-1), corresponding linear range 0-0.577 kPa good linearity R2 = 0.978, compared other PLHs. This stable repeatable operation under various pressures durability 6.56 for 4000 cycles. Finally, monitoring health signals such those wrist pulse, swallowing, pronunciation words demonstrated an application. These results support simple fabrication highly sensitive, human monitoring.

Language: Английский

---

Challenges of Emerging Wearable Sensors for Remote Monitoring toward Telemedicine Healthcare

Analytical Chemistry, Journal Year: 2023, Volume and Issue: 95(3), P. 1773 - 1784

Published: Jan. 11, 2023

Digitized telemedicine tools with the Internet of Things (IoT) started advancing into our daily lives and have been incorporated commercial wearable gadgets for noninvasive remote health monitoring. The newly established steered toward a new era decentralized healthcare. advancement monitoring system has attracted enormous interest in multimodal big data acquisition real-time physiological biochemical information via methods any health-related industries. expectation creation focused on early diagnosis multiple diseases minimizing cost high-tech invasive treatments. However, only limited progress directed development sensors. This Perspective addresses these sensors that encounter challenges forefront technological gaps hampering realization at molecular levels related to smart materials mostly single use, issues selectivity analytes, low sensitivity targets, miniaturization, lack artificial intelligence perform tasks secure transfer. Sensor stability minimized signal drift, on-body sensor reusability, long-term continuous provides key analytical challenges. also focuses on, promotes, highlights distinct capability interconnect healthcare physical sensing multiplex deeper levels. Moreover, it points out some critical different material aspects promotes what will take advance current state-of-art Ultimately, this is draw attention potential blind spots technology inspire further integrated mitigating multimorbidity aging societies through identify signs diseases.

Language: Английский

---