keyword
https://read.qxmd.com/read/38530048/hybrid-hydrogen-bonding-strategy-to-construct-instantaneous-self-healing-highly-elastic-ionohydrogel-for-multi-functional-electronics
#21
JOURNAL ARTICLE
Hongfei Huang, Lijie Sun, Luzhi Zhang, Yalin Zhang, Youwei Zhang, Shunan Zhao, Shijia Gu, Wei Sun, Zhengwei You
Gels show great promise for applications in wearable electronics, biomedical devices, and energy storage systems due to their exceptional stretchability and adjustable electrical conductivity. However, the challenge lies in integrating multiple functions like elasticity, instantaneous self-healing, and a wide operating temperature range into a single gel. To address this issue, a hybrid hydrogen bonding strategy to construct gel with these desirable properties is proposed. The intricate network of hybrid strong weak hydrogen bonds within the polymer matrix enables these ionohydrogel to exhibit remarkable instantaneous self-healing, stretching up to five times their original length within seconds...
March 26, 2024: Small
https://read.qxmd.com/read/38529746/ultra-thin-gaas-single-junction-solar-cells-for-self-powered-skin-compatible-electrocardiogram-sensors
#22
JOURNAL ARTICLE
Yonghyun Nam, Dongjoon Shin, Jun-Gyu Choi, Inho Lee, Sunghyun Moon, Yeojun Yun, Won-June Lee, Ikmo Park, Sungjun Park, Jaejin Lee
GaAs thin-film solar cells have high efficiency, reliability, and operational stability, making them a promising solution for self-powered skin-conformal biosensors. However, inherent device thickness limits suitability for such applications, making them uncomfortable and unreliable in flexural environments. Therefore, reducing the flexural rigidity becomes crucial for integration with skin-compatible electronic devices. Herein, this study demonstrated a novel one-step surface modification bonding methodology, allowing a streamlined transfer process of ultra-thin (2...
March 26, 2024: Small Methods
https://read.qxmd.com/read/38526672/degradable-silk-fibroin-based-piezoresistive-sensor-for-wearable-biomonitoring
#23
JOURNAL ARTICLE
Chunlin Pang, Fei Li, Xiaorao Hu, Keyu Meng, Hong Pan, Yong Xiang
Degradable wearable electronics are attracting increasing attention to weaken or eliminate the negative effect of waste e-wastes and promote the development of medical implants without secondary post-treatment. Although various degradable materials have been explored for wearable electronics, the development of degradable wearable electronics with integrated characteristics of highly sensing performances and low-cost manufacture remains challenging. Herein, we developed a facile, low-cost, and environmentally friendly approach to fabricate a biocompatible and degradable silk fibroin based wearable electronics (SFWE) for on-body monitoring...
March 25, 2024: Discov Nano
https://read.qxmd.com/read/38525617/artificial-intelligence-ai-or-augmented-intelligence-how-big-data-and-ai-are-transforming-healthcare-challenges-and-opportunities
#24
JOURNAL ARTICLE
K Moodley
The sanctity of the doctor-patient relationship is deeply embedded in tradition - the Hippocratic oath, medical ethics, professional codes of conduct, and legislation - all of which are being disrupted by big data and 'artificial' intelligence (AI). The transition from paper-based records to electronic health records, wearables, mobile health applications and mobile phone data has created new opportunities to scale up data collection. Databases of unimaginable magnitude can be harnessed to develop algorithms for AI and to refine machine learning...
December 31, 2023: South African Medical Journal
https://read.qxmd.com/read/38523657/an-underwater-vest-containing-an-antioxidant-mxene-hydrogel-for-sensitive-recognition-of-fish-locomotion
#25
JOURNAL ARTICLE
Chengxiu Yang, Jiafei Hu, Lihui Liu, Shaowei Wu, Mengchun Pan, Yan Liu, Haomiao Wang, Peisen Li, Qi Zhang, Weicheng Qiu, Huihui Luo
The perception of fish locomotion is important for understanding their adaptive behaviors and ethological characteristics. However, the main strategy used for extracting fish attitudes involves the use of a vision-based monitoring system, which is limited in its range of observation and cannot perform tracking for long times. Here, we report the use of a wearable tagging electronic device, referred to as an underwater vest, to capture the surrounding flow field disturbances triggered by swimming or momentary postural changes...
2024: Microsystems & Nanoengineering
https://read.qxmd.com/read/38522685/anti-freezing-hydrogel-regulated-by-ice-structuring-proteins-cellulose-nanofibers-system-as-flexible-sensor-for-winter-sports
#26
JOURNAL ARTICLE
Xing Gao, Jie Wu, Yutong Wang, Yanan Wang, Ying Zhang, Tat Thang Nguyen, Minghui Guo
Conductive hydrogels are widely used as sensors in wearable devices. However, hydrogels cannot endure harsh low-temperature environments. Herein, a new regulatory system based on natural ice-structuring proteins (ISPs) and cellulose nanofibers (CNFs) is introduced into hydrogel network consisting of chemically crosslinked network of copolymerized acrylamide and 2-acrylamide-2-methylpropanesulfonic acid, and physically crosslinked polyvinyl alcohol chains, affording an anti-freezing hydrogel with high conductivity (2...
March 22, 2024: International Journal of Biological Macromolecules
https://read.qxmd.com/read/38521784/programming-mechanics-in-knitted-materials-stitch-by-stitch
#27
JOURNAL ARTICLE
Krishma Singal, Michael S Dimitriyev, Sarah E Gonzalez, A Patrick Cachine, Sam Quinn, Elisabetta A Matsumoto
Knitting turns yarn, a 1D material, into a 2D fabric that is flexible, durable, and can be patterned to adopt a wide range of 3D geometries. Like other mechanical metamaterials, the elasticity of knitted fabrics is an emergent property of the local stitch topology and pattern that cannot solely be attributed to the yarn itself. Thus, knitting can be viewed as an additive manufacturing technique that allows for stitch-by-stitch programming of elastic properties and has applications in many fields ranging from soft robotics and wearable electronics to engineered tissue and architected materials...
March 23, 2024: Nature Communications
https://read.qxmd.com/read/38520984/advancements-in-optical-fiber-based-wearable-sensors-for-smart-health-monitoring
#28
REVIEW
Rajan Jha, Pratik Mishra, Santosh Kumar
Healthcare system is undergoing a significant transformation from a traditional hospital-centered to an individual-centered one, as a result of escalating chronic diseases, ageing populations, and ever-increasing healthcare costs,. Wearable sensors have become widely used in health monitoring systems since the COVID-19 pandemic. They enable continuous measurement of important health indicators like body temperature, wrist pulse, respiration rate, and non-invasive bio fluids like saliva and perspiration. Over the last few decades, the development has mostly concentrated on electrochemical and electrical wearable sensors...
March 18, 2024: Biosensors & Bioelectronics
https://read.qxmd.com/read/38520381/digital-neuropsychology-beyond-computerized-cognitive-assessment-applications-of-novel-digital-technologies
#29
JOURNAL ARTICLE
Che Harris, Yingfei Tang, Eliana Birnbaum, Christine Cherian, Dinesh Mendhe, Michelle H Chen
Compared with other health disciplines, there is a stagnation in technological innovation in the field of clinical neuropsychology. Traditional paper-and-pencil tests have a number of shortcomings, such as low-frequency data collection and limitations in ecological validity. While computerized cognitive assessment may help overcome some of these issues, current computerized paradigms do not address the majority of these limitations. In this paper, we review recent literature on the applications of novel digital health approaches, including ecological momentary assessment, smartphone-based assessment and sensors, wearable devices, passive driving sensors, smart homes, voice biomarkers, and electronic health record mining, in neurological populations...
March 22, 2024: Archives of Clinical Neuropsychology: the Official Journal of the National Academy of Neuropsychologists
https://read.qxmd.com/read/38517349/perovskite-nanocrystals-induced-core-shell-inorganic-organic-nanofibers-for-efficient-energy-harvesting-and-self-powered-monitoring
#30
JOURNAL ARTICLE
Chuanwei Zhi, Shuai Zhang, Hanbai Wu, Yang Ming, Shuo Shi, Weng-Fu Io, Shuo Meng, Yifan Si, Bin Fei, Jianhua Hao, Jinlian Hu
The emerging field of wearable electronics requires power sources that are flexible, lightweight, high-capacity, durable, and comfortable for daily use, which enables extensive use in electronic skins, self-powered sensing, and physiological health monitoring. In this work, we developed the core-shell and biocompatible Cs2 InCl5 (H2 O)@PVDF-HFP nanofibers (CIC@HFP NFs) by one-step electrospinning assisted self-assembly method for triboelectric nanogenerators (TENGs). By adopting lead-free Cs2 InCl5 (H2 O) as an inducer, CIC@HFP NFs exhibited β-phase-enhanced and self-aligned nanocrystals within the uniaxial direction...
March 22, 2024: ACS Nano
https://read.qxmd.com/read/38517155/developing-air-stable-n-type-swcnt-based-composites-with-high-thermoelectric-and-robust-mechanical-properties-for-wearable-electronics
#31
JOURNAL ARTICLE
Jiye Xiao, Zhen Zhang, Jun Long, Fuwei Liu, Shichao Wang, Chunmei Gao, Lei Wang
Flexible organic thermoelectric generators are gaining prominence in wearable electronics, leveraging body heat as an energy source. Their advancement is hindered by the scarcity of air-stable n-type organic materials with robust mechanical properties. This study introduces two new polymers (HDCN4 and HDCN8), created through polycondensation of paraformaldehyde and diamine-terminated poly(ethylene glycol) (PEGDA) with molecular weights of 4000 and 8000 g/mol into single-walled carbon nanotubes (SWCNTs). The resulting HDCN4/SWCNT and HDCN8/SWCNT composites show impressive power factors of 225...
March 22, 2024: ACS Applied Materials & Interfaces
https://read.qxmd.com/read/38516937/adaptive-nanotube-networks-enabling-omnidirectionally-deformable-electro-driven-liquid-crystal-elastomers-towards-artificial-muscles
#32
JOURNAL ARTICLE
Jiao Wang, Hao Zhou, Yangyang Fan, Wenhao Hou, Tonghui Zhao, Zhiming Hu, Enzheng Shi, Jiu-An Lv
Artificial muscles that can convert electrical energy into mechanical energy promise broad scientific and technological applications. However, existing electro-driven artificial muscles have been plagued with problems that hinder their practical applications: large electro-mechanical attenuation during deformation, high-driving voltages, small actuation strain, and low power density. Here, we design and create novel electro-thermal-driven artificial muscles rationally composited by hierarchically structured carbon nanotube (HS-CNT) networks and liquid crystal elastomers (LCEs), which possess adaptive sandwiched nanotube networks with angulated-scissor-like microstructures, thus effectively addressing above problems...
March 22, 2024: Materials Horizons
https://read.qxmd.com/read/38513895/unzipped-carbon-nanotubes-assisted-3d-printable-functionalized-chitosan-hydrogels-for-strain-sensing-applications
#33
JOURNAL ARTICLE
Dinesh K Patel, So-Yeon Won, Tejal V Patil, Sayan Deb Dutta, Ki-Taek Lim, Sung Soo Han
Developing multifunctional hydrogels for wearable strain sensors has received significant attention due to their diverse applications, including human motion detection, personalized healthcare, soft robotics, and human-machine interfaces. However, integrating the required characteristics into one component remains challenging. To overcome these limitations, we synthesized multifunctional hydrogels using carboxymethyl chitosan (CMCS) and unzipped carbon nanotubes (f-CNTs) as strain sensor via a one-pot strategy...
March 19, 2024: International Journal of Biological Macromolecules
https://read.qxmd.com/read/38513050/biocompatible-metal-free-perovskite-membranes-for-wearable-x-ray-detectors
#34
JOURNAL ARTICLE
Xinmei Liu, Qingyue Cui, Haojin Li, Shumei Wang, Qi Zhang, Wenliang Huang, Chou Liu, Weilun Cai, Telun Li, Zhou Yang, Chuang Ma, Lixia Ren, Shengzhong Frank Liu, Kui Zhao
Halide perovskites are emerging as promising materials for X-ray detection owing to their compatibility with flexible fabrication, cost-effective solution processing, and exceptional carrier transport behaviors. However, the challenge of removing lead from high-performing perovskites, crucial for wearable electronics, while retaining their superior performance, persists. Here, we present for the first time a highly sensitive and robust flexible X-ray detector utilizing a biocompatible, metal-free perovskite, MDABCO-NH4 I3 (MDABCO = methyl- N '-diazabicyclo[2...
March 21, 2024: ACS Applied Materials & Interfaces
https://read.qxmd.com/read/38512736/novel-wearable-device-for-mindful-sensorimotor-training-integrating-motor-decoding-and-somatosensory-stimulation-for-neurorehabilitation
#35
JOURNAL ARTICLE
Mirka Buist, Shahrzad Damercheli, Jan Zbinden, Minh Tat Nhat Truong, Enzo Mastinu, Max Ortiz-Catalan
Sensorimotor impairment is a prevalent condition requiring effective rehabilitation strategies. This study introduces a novel wearable device for Mindful Sensorimotor Training (MiSMT) designed for sensory and motor rehabilitation. Our MiSMT device combines motor training using myoelectric pattern recognition along sensory training using two tactile displays. This device offers a comprehensive solution, integrating electromyography and haptic feedback, lacking in existing devices. The device features eight electromyography channels, a rechargeable battery, and wireless Bluetooth or Wi-Fi connectivity for seamless communication with a computer or mobile device...
March 21, 2024: IEEE Transactions on Neural Systems and Rehabilitation Engineering
https://read.qxmd.com/read/38511281/patterned-growth-of-agbis-2-nanostructures-on-arbitrary-substrates-for-broadband-and-eco-friendly-optoelectronic-sensing
#36
JOURNAL ARTICLE
Yu Miao, Zhuoran Wang, Zhongming Wei, Guozhen Shen
The patterning of functional nanomaterials shows a promising path in the advanced fabrication of electronic and optoelectronic devices. Current micropatterning strategies are indispensable for post-etching/liftoff processes that contaminate/damage functional materials. Herein, we developed an innovative, low-temperature, post-liftoff-free, seed-confined fabricating strategy that can tackle this issue, thus achieving designated patterns of flower-shaped AgBiS2 nanostructures at either micro- or macro-scale on arbitrary substrates that are either rigid or flexible...
March 21, 2024: Nanoscale
https://read.qxmd.com/read/38507488/distributed-sensing-along-fibers-for-smart-clothing
#37
JOURNAL ARTICLE
Brett C Hannigan, Tyler J Cuthbert, Chakaveh Ahmadizadeh, Carlo Menon
Textile sensors transform our everyday clothing into a means to track movement and biosignals in a completely unobtrusive way. One major hindrance to the adoption of "smart" clothing is the difficulty encountered with connections and space when scaling up the number of sensors. There is a lack of research addressing a key limitation in wearable electronics: Connections between rigid and textile elements are often unreliable, and they require interfacing sensors in a way incompatible with textile mass production methods...
March 22, 2024: Science Advances
https://read.qxmd.com/read/38506556/3d-printing-self-healing-and-self-adhesive-elastomers-for-wearable-electronics-in-amphibious-environments
#38
JOURNAL ARTICLE
Jialiang Lai, Xiaorong Wang, Qifan Zhao, Chun Zhang, Tao Gong, Lirong He, Zhanhua Wang, Hesheng Xia
To meet the demands of challenging usage scenarios, there is an increasing need for flexible electronic skins that can operate properly not only in terrestrial environments but also extend to complex aquatic conditions. In this study, we develop an elastomer by incorporating dynamic urea bonds and hydrogen bonds into the polydimethylsiloxane backbone, which exhibits excellent autonomous self-healing and reversible adhesive performance in both dry and wet environments. A multifunctional flexible sensor with excellent sensing stability, amphibious self-healing capacity, and amphibious self-adhesive performance is fabricated through solvent-free 3D printing...
March 20, 2024: ACS Applied Materials & Interfaces
https://read.qxmd.com/read/38506548/carbon-nanofibrous-aerogels-derived-from-electrospun-polyimide-for-multifunctional-piezoresistive-sensors
#39
JOURNAL ARTICLE
Jun Lin, Jianwei Li, Yutong Song, Wei Chu, Wen Li, Fei Liu, Xinhai He, Qiangli Zhao, Hang Zhao
The fabrication of carbon aerogels with ultralow density, high electrical conductivity, and ultraelasticity still remains substantial challenges. This study utilizes electrospun polyimide aerogel as the source to fabricate flexible carbon nanofibrous aerogel (PI-CNA) capable of multifunctional applications. The lightweight PI-CNA based piezoresistive sensor shows a wide linear range (0-217 kPa), rapid response/recovery time, and fatigue resistance (12,000 cycles). More importantly, the superior pressure sensing enables the PI-CNA for all-range healthcare sensing, including pulse monitoring, physiological activity detection, speech recognition, and gait recognition...
March 20, 2024: ACS Applied Materials & Interfaces
https://read.qxmd.com/read/38506104/comparison-of-novel-telemonitoring-system-using-the-single-lead-electrocardiogram-patch-with-conventional-telemetry-system
#40
JOURNAL ARTICLE
Soonil Kwon, Eue-Keun Choi, So-Ryoung Lee, Seil Oh, Hee-Seok Song, Young-Shin Lee, Sang-Jin Han, Hong Euy Lim
BACKGROUND AND OBJECTIVES: Although a single-lead electrocardiogram (ECG) patch may provide advantages for detecting arrhythmias in outpatient settings owing to user convenience, its comparative effectiveness for real-time telemonitoring in inpatient settings remains unclear. We aimed to compare a novel telemonitoring system using a single-lead ECG patch with a conventional telemonitoring system in an inpatient setting. METHODS: This was a single-center, prospective cohort study...
March 2024: Korean Circulation Journal
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