Advances in flexible sensors for intelligent perception system enhanced by artificial intelligence

InfoMat, Journal Year: 2023, Volume and Issue: 5(5)

Published: March 23, 2023

Abstract Intelligent perception means that with the assistance of artificial intelligence (AI)‐motivated brain, flexible sensors achieve ability memory, learning, judgment, and reasoning about external information like human brain. Due to superiority machine learning (ML) algorithms in data processing intelligent recognition, systems possess match or even surpass systems. However, built‐in these need work on dynamic irregular surfaces, inevitably affecting precision fidelity acquired data. In recent years, strategy introducing developed functional materials innovative structures into has made some progress toward above challenges, blessing ML algorithms, accurate various scenarios have been achieved. Here, most representative for constructing are comprehensively reviewed, research based is further summarized, intersection two expected unlock new opportunities next‐stage AI development. image

Language: Английский

---

A Breathable, Stretchable, and Self‐Calibrated Multimodal Electronic Skin Based on Hydrogel Microstructures for Wireless Wearables

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: 34(32)

Published: April 12, 2024

Abstract Biomimetic electronic skins (e‐skins) are widely used in wearables, smart prosthesis and soft robotics. However, multimodal e‐skins, especially those based on hydrogels, face multiple challenges for practical applications, involving multi‐sensing signal mutual interference, low breathability stretchability. Here, a breathable stretchable e‐skin with multilayer film microstructure is developed to achieve self‐calibrated sensing of any two three stimuli: strain, temperature, humidity, minimal crosstalk. Hydrogel fibers different shapes designed strain temperature modules, the hydrogel as humidity module. The exhibits impressive performance, including detection limit (0.03%), linearity (R 2 = 0.990), high‐temperature sensitivity (1.77%/°C), wide range (33–98% RH). Interestingly, due directional anisotropy shaped fibers, realizes directions. By introducing porous elastomer encapsulation membranes, wearing comfort attained, while high stretchability (100% strain) maintained. Furthermore, personalized human‐machine interaction system created by integrating wireless circuit realize real‐time gesture recognition, physiological signals monitoring, prosthesis.

Language: Английский

---

Principle and recent progress of triboelectric pressure sensors for wearable applications

Nano Energy, Journal Year: 2023, Volume and Issue: 113, P. 108542 - 108542

Published: May 19, 2023

Language: Английский

---

Self‐Reinforced Hydrogel‐Based Skin‐Contactable Flexible Electronics for Multimodal Electrophysiological Signal Monitoring and Emergency Alarming System

Advanced Functional Materials, Journal Year: 2023, Volume and Issue: 33(24)

Published: April 23, 2023

Abstract Inherently tissue‐like feature and multifunctional property of hydrogels make themself excellent materials for flexible electronics. However, conventional with insufficient mechanical strength poor fatigue resistance are damaged or lose service stability when subjected to alternating stress. Herein, self‐reinforced fabricated from elaborately designed ionic conductive after repetitive sweat soak‐dehydration (SSD) treatment. The tensile is improved 930 480 kPa exhibits insensitivity crack propagation in any direction 6 SSD treatment cycles. In addition, the show skin friendliness compared commercial wearable a skin‐compatibility mouse model. Bringing together those advantages, various skin‐contactable electronics utilizing an emergency alarming system acute myocardial infarction caused cardiogenic shock also integrated that expected help potential patients accidents.

Language: Английский

---

A Perceptual and Interactive Integration Strategy Toward Telemedicine Healthcare Based on Electroluminescent Display and Triboelectric Sensing 3D Stacked Device

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: 34(40)

Published: May 6, 2024

Abstract The conventional medical assistive strategy for wearable devices involves sensing physiological signals and subsequent analysis while it lacks the capability visual interaction often necessitates use of additional bulky display. Herein, a perceptual based on electroluminescent triboelectric 3D stacked device (ETD) is proposed to address current issues. ETD utilizes bottom sensor tactile information, which processed analyzed, ultimately triggering selective illumination top array through external power circuitry. possesses generate 100 V with 1.5 cm 2 stable ability at 30 drive voltage. Based outstanding features ETD, two assistance scenarios are explored. I) captures signals, such as pulse rate, respiratory special joint flexion, in situ displays corresponding effectively assisting patients/elders self‐monitoring. II) A bidirectional interactive telemedicine system utilizing ETDs implemented, not only gathers real‐time activity status from but also realizes that remote physician assesses safety assessment results wirelessly back‐communicated enabling advice.

Language: Английский

---

Emerging Trends of Nanofibrous Piezoelectric and Triboelectric Applications: Mechanisms, Electroactive Materials, and Designed Architectures

Advanced Materials, Journal Year: 2024, Volume and Issue: 36(26)

Published: March 28, 2024

Abstract Over the past few decades, significant progress in piezo‐/triboelectric nanogenerators (PTEGs) has led to development of cutting‐edge wearable technologies. Nanofibers with good designability, controllable morphologies, large specific areas, and unique physicochemical properties provide a promising platform for PTEGs various advanced applications. However, further nanofiber‐based is limited by technical difficulties, ranging from materials design device integration. Herein, current developments based on electrospun nanofibers are systematically reviewed. This review begins mechanisms advantages nanodevices, including high breathability, waterproofness, scalability, thermal–moisture comfort. In terms structural design, novel electroactive structure assemblies 1D micro/nanostructures, 2D bionic structures, 3D multilayered structures discussed. Subsequently, nanofibrous applications such as energy harvesters, personalized medicine, personal protective equipment, human–machine interactions summarized. Nanofiber‐based still face many challenges efficiency, material durability, stability, Finally, research gap between practical discussed, emerging trends proposed, providing some ideas intelligent wearables.

Language: Английский

---

Mxene-based wearable self-powered and photothermal triboelectric nanogenerator patches for wound healing acceleration and tactile sensing

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 482, P. 148949 - 148949

Published: Jan. 21, 2024

Language: Английский

---

A comprehensive review on triboelectric sensors and AI-integrated systems

Materials Today, Journal Year: 2024, Volume and Issue: unknown

Published: Sept. 1, 2024

Language: Английский

---

Flexible Pressure, Humidity, and Temperature Sensors for Human Health Monitoring

Advanced Healthcare Materials, Journal Year: 2024, Volume and Issue: unknown

Published: Sept. 17, 2024

Abstract The rapid advancements in artificial intelligence, micro‐nano manufacturing, and flexible electronics technology have unleashed unprecedented innovation opportunities for applying sensors healthcare, wearable devices, human–computer interaction. human body's tactile perception involves physical parameters such as pressure, temperature, humidity, all of which play an essential role maintaining health. Inspired by the sensory function skin, many bionic been developed to simulate skin's various stimuli are widely applied health monitoring. Given urgent requirements sensing performance integration field devices monitoring, here is a timely overview recent advances multi‐functional It covers fundamental components categorizes them based on different response mechanisms, including resistive, capacitive, voltage, other types. Specifically, application these area monitoring highlighted. Based this, extended dual/triple‐mode integrating temperature presented. Finally, challenges discussed.

Language: Английский

---

Stretchable and Self‐Powered Mechanoluminescent Triboelectric Nanogenerator Fibers toward Wearable Amphibious Electro‐Optical Sensor Textiles

Advanced Science, Journal Year: 2024, Volume and Issue: unknown

Published: July 5, 2024

Abstract Flexible electro‐optical dual‐mode sensor fibers with capability of the perceiving and converting mechanical stimuli into digital‐visual signals show good prospects in smart human‐machine interaction interfaces. However, heavy mass, low stretchability, lack non‐contact sensing function seriously impede their practical application wearable electronics. To address these challenges, a stretchable self‐powered mechanoluminescent triboelectric nanogenerator fiber (MLTENGF) based on lightweight carbon nanotube is successfully constructed. Taking advantage mechanoluminescent‐triboelectric synergistic effect, well‐designed MLTENGF delivers an excellent enhancement electrical signal 200% evident optical whether land or underwater. More encouragingly, device possesses outstanding stability almost unchanged sensitivity after stretching for 200%. Furthermore, extraordinary detection distance up to 35 cm achieved MLTENGF. As demonstrations, MLTENGFs can be used home security monitoring, intelligent zither, traffic vehicle collision avoidance, underwater communication. Thus, this work accelerates development textile electronics

Language: Английский

---