Design, Fabrication, and Wearable Medical Application of a High‐Resolution Flexible Capacitive Temperature Sensor Based on the Thermotropic Phase Transition Composites of PEO/PVDF‐HFP/H3PO4 DOI

Ruohai Hu,

Ping Liu,

Wei Zhu

et al.

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

Published: Dec. 4, 2024

Abstract Phase transition materials have the potential to be utilized as high‐resolution temperature‐sensitive materials. However, it is a challenge develop them into temperature sensors with good stability and repeatability. In this work, inspired by phase theory electrical double‐layer capacitance principle, novel flexible capacitive sensor based on Polyethylene oxide(PEO)/Poly(vinylidene fluoride‐co‐hexafluoropropylene)/H 3 PO 4 proposed for first time. By blending high low molecular weight PEO adding ionic solution, exhibits resolution (0.05 °C) response speed (<12 s) within 35–43 °C. The introduction of mesh structure aids material in achieving microdomain control crystallization improves repeatability ( E x < 2.2%) sensor. used monitoring human body diabetic foot ulcers, results show that can achieve continuous comfortable early‐stage ulcer diagnosis, offering broad applications health rehabilitation medicine.

Language: Английский

Great Carbon Nano Materials based Composites for Electronic Skin: Intelligent Sensing, and Self-Powered Nano Generators DOI
Vineet Kumar, Nargish Parvin, Sang Woo Joo

et al.

Nano Energy, Journal Year: 2025, Volume and Issue: unknown, P. 110805 - 110805

Published: Feb. 1, 2025

Language: Английский

Citations

2

Recent Advances in Flexible Temperature Sensors: Materials, Mechanism, Fabrication, and Applications DOI Creative Commons
Lin Liu, Yingying Dou, Junhua Wang

et al.

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

Published: July 29, 2024

Flexible electronics is an emerging and cutting-edge technology which considered as the building blocks of next generation micro-nano electronics. integrate both active passive functions in devices, driving rapid developments healthcare, Internet Things (IoT), industrial fields. Among them, flexible temperature sensors, can be directly attached to human skin or curved surfaces objects for continuous stable measurement, have attracted much attention applications disease prediction, health monitoring, robotic signal sensing, surface measurement. Preparing sensors with high sensitivity, fast response, wide measurement interval, flexibility, stretchability, low cost, reliability, stability has become a research target. This article reviewed latest development mainly discusses sensitive materials, working mechanism, preparation process, sensors. Finally, conclusions based on developments, challenges prospects this field are presented.

Language: Английский

Citations

14

Recent advances in flexible sensors: From sensing materials to detection modes DOI
Jiao Qin, Yuxin Tang, Yongyi Zeng

et al.

TrAC Trends in Analytical Chemistry, Journal Year: 2024, Volume and Issue: unknown, P. 118027 - 118027

Published: Oct. 1, 2024

Language: Английский

Citations

11

High Spatiotemporal Resolution Biomimetic Thermoreceptors Realizing by Jointless p‐n Integration Thermoelectric Composites DOI

Chengzhi Chen,

Zijian Liu, Liangchao Guo

et al.

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

Published: Sept. 10, 2024

Abstract Human body temperature is a critical physiological indicator, reflecting metabolism and regulation. Biomimetic sensors with high temporal spatial resolution are highly desired to emulate human skin's perception capabilities. Here, selective filtration method proposed fabricate jointless p‐n thermoelectric module, integrating p‐type n‐type materials minimal interfacial barriers. The structure enables rapid response, signal variation, robust linear relationship between open circuit voltage difference, making it suitable as biomimetic thermoreceptor for enhancing humanoid robots intelligent sensing A smart system developed using module the element. In thermal sensing, can timely effectively identify heat source, fast response time of <0.1 s. addition, in reliably detects stimuli within discrete regions each measuring area <1 × 1 cm 2 . This study provides an effective strategy applications.

Language: Английский

Citations

10

Sintering and electrical properties of spinel-type high-entropy ceramics (Co,Mn,Fe,Zn,Ni,Mg,Al,Cr)3O4 for NTC thermistors DOI

Fanlin Kong,

Yi Liu, Shiyu Cao

et al.

Ceramics International, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 1, 2025

Language: Английский

Citations

0

Fully Printed Flexible Polystyrene/Graphite-Based Temperature Sensor with Excellent Properties for Potential Smart Applications DOI Creative Commons
Ahmad Al Shboul,

Mohsen Ketabi,

Jenner H. L. Ngai

et al.

ACS Omega, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 23, 2025

This study presents an innovative temperature sensor based on a thermistor nanocomposite of graphite (Gt) and polystyrene (PS). The exhibited notable thermal stability film integrity, offering two distinct linear response regions within the tested range −10 to 60 °C. It demonstrated sensitivity 0.125% °C–1 between 10 °C, followed by another with 0.41% from 20 Furthermore, it response/recovery time 0.97/1.3 min at heating/cooling rate °C min–1. maintained minimal baseline drift even when subjected varying humidity levels. We assessed its mechanical flexibility for hundreds bending cycles angle 30°, adapting dynamic environmental conditions. sensor's thermomechanical test (response stress under fluctuations) underscored adaptability over Notably, displayed excellent chemical stability, maintaining consistent performance harsh conditions like exposure corrosive gases prolonged immersion in tap water. Real-world tests practical utility, including precise measurements solid objects breath monitoring. These findings suggest promising applications healthcare, monitoring, various IoT applications.

Language: Английский

Citations

0

Trends in Flexible Sensing Technology in Smart Wearable Mechanisms–Materials–Applications DOI Creative Commons
Sen Wang, Haorui Zhai, Qiang Zhang

et al.

Nanomaterials, Journal Year: 2025, Volume and Issue: 15(4), P. 298 - 298

Published: Feb. 15, 2025

Flexible sensors are revolutionizing our lives as a key component of intelligent wearables. Their pliability, stretchability, and diverse designs enable foldable portable devices while enhancing comfort convenience. Advances in materials science have provided numerous options for creating flexible sensors. The core their application areas like electronic skin, health medical monitoring, motion human-computer interaction is selecting that optimize sensor performance weight, elasticity, comfort, flexibility. This article focuses on sensors, analyzing "sensing mechanisms-materials-applications" framework. It explores development trajectory, material characteristics, contributions various domains such interaction. concludes by summarizing current research achievements discussing future challenges opportunities. expected to continue expanding into new fields, driving the evolution smart wearables contributing society.

Language: Английский

Citations

0

Advancements in Functionalizable Metal‐Organic Frameworks for Flexible Sensing Electronics DOI Open Access
Xiaoqian Zhou, Xiaoliang Chen, Bo Yang

et al.

Advanced Functional Materials, Journal Year: 2025, Volume and Issue: unknown

Published: March 11, 2025

Abstract Flexible sensing electronics, with good lightweight and flexibility, can maintain excellent capability while fitting complex curved surfaces, having important applications in wearable devices, medical health monitoring, robotics. The rapid advancement of metal‐organic frameworks (MOFs) has created the prospect additional improvements flexible sensors. porous structure brings them a high specific surface area, meaning that when used as sensitive materials for sensors, sensitivity selectivity be achieved. Meanwhile, performance stability MOF‐based sensors further enhanced by modifying MOFs’ or compounding other materials, which is crucial manufacturing utilized working conditions. Herein, MOFs systematically reviewed. First, common series MOFs, preparation modification methods, highly conductive are introduced. application then expounded, including self‐powered mechanical sensing, gas liquid analyte multi‐target/mode sensing. It believed better response capabilities developed processes advance, expected to more widely future promote development technologies such human‐computer interaction technology.

Language: Английский

Citations

0

Recent advancements and perspectives in conductive hydrogel-based flexible all-in-one supercapacitors DOI
Hui Fang Song, Cheng Huang, B. Zheng

et al.

Journal of Power Sources, Journal Year: 2025, Volume and Issue: 641, P. 236902 - 236902

Published: April 2, 2025

Language: Английский

Citations

0

Flexible Composite Fluorescent Optical Fiber Sensor Embedded with Li2HfO3:Er3+/Yb3+ for Physiological Temperature Monitoring DOI

Qian Zhu,

Yongsheng Sun,

Yuzhen Wang

et al.

Laser & Photonics Review, Journal Year: 2025, Volume and Issue: unknown

Published: April 2, 2025

Abstract Flexible temperature sensors are crucial for monitoring physiological parameters in smart human wearable devices, however, there is a challenge to realize reproducible, sensitive, real‐time, and in‐situ sensing simultaneously. Herein, Er 3+ /Yb co‐doped Li 2 HfO 3 phosphor thermometries have been designed prepared, which demonstrate bright upconversion luminescence precise capabilities. The characteristics of thermally coupled energy states :Er , Yb explored based on the fluorescence intensity ratio technique, with maximum relative sensitivity 0.875% K −1 uncertainty 0.017 at 300 K. In addition, flexible composite fluorescent optical fiber fabricated, double‐cladding structure employed monitor body airflow heat satisfying performances. This work not only provides promising rare earth thermometry but also opens new avenue development health management.

Language: Английский

Citations

0