keyword
https://read.qxmd.com/read/38536948/control-etched-ti-3-c-2-t-x-mxene-nanosheets-for-a-low-voltage-operating-flexible-memristor-for-efficient-neuromorphic-computation
#1
JOURNAL ARTICLE
Jeny Gosai, Mansi Patel, Lingli Liu, Aziz Lokhandwala, Parth Thakkar, Mun Yin Chee, Muskan Jain, Wen Siang Lew, Nitin Chaudhari, Ankur Solanki
Hardware neural networks with mechanical flexibility are promising next-generation computing systems for smart wearable electronics. Overcoming the challenge of developing a fully synaptic plastic network, we demonstrate a low-operating-voltage PET/ITO/p-MXene/Ag flexible memristor device by controlling the etching of aluminum metal ions in Ti3 C2 T x MXene. The presence of a small fraction of Al ions in partially etched MXene (p-Ti3 C2 T x ) significantly suppresses the operating voltage to 1 V compared to 7 V from fully Al etched MXene (f-Ti3 C2 T x )-based devices...
March 27, 2024: ACS Applied Materials & Interfaces
https://read.qxmd.com/read/38536070/conductive-peptide-based-mxene-hydrogel-as-a-piezoresistive-sensor
#2
JOURNAL ARTICLE
Dana Cohen-Gerassi, Or Messer, Gal Finkelstein-Zuta, Moran Aviv, Bar Favelukis, Yosi Shacham-Diamand, Maxim Sokol, Lihi Adler-Abramovich
Wearable pressure sensors have become increasingly popular for personal healthcare and motion detection applications due to recent advances in materials science and functional nanomaterials. In this study, we present a novel composite hydrogel as a sensitive piezoresistive sensor that can be utilized for various biomedical applications, such as wearable skin patches and integrated artificial skin that can measure pulse and blood pressure, as well as monitor sound as a self-powered microphone. The hydrogel is composed of self-assembled short peptides containing aromatic, positively- or negatively charged amino acids combined with 2D Ti3 C2 Tz MXene nanosheets...
March 27, 2024: Advanced Healthcare Materials
https://read.qxmd.com/read/38535705/liquid-metal-enabled-epidermal-interfaces
#3
REVIEW
Ting Fang, Yuping Sun, Desheng Kong
Soft materials are crucial for epidermal interfaces in biomedical devices due to their capability to conform to the body compared to rigid inorganic materials. Gels, liquids, and polymers have been extensively explored, but they lack sufficient electrical and thermal conductivity required for many application settings. Gallium-based alloys are molten metals at room temperature with exceptional electrical and thermal conductivity. These liquid metals and their composites can be directly applied onto the skin as interface materials...
March 27, 2024: ACS Applied Bio Materials
https://read.qxmd.com/read/38535638/three-dimensional-vanadium-and-nitrogen-dual-doped-ti-3-c-2-film-with-ultra-high-specific-capacitance-and-high-volumetric-energy-density-for-zinc-ion-hybrid-capacitors
#4
JOURNAL ARTICLE
Xinhui Jin, Siliang Yue, Jiangcheng Zhang, Liang Qian, Xiaohui Guo
Zinc-ion hybrid capacitors (ZICs) can achieve high energy and power density, ultralong cycle life, and a wide operating voltage window, and they are widely used in wearable devices, portable electronics devices, and other energy storage fields. The design of advanced ZICs with high specific capacity and energy density remains a challenge. In this work, a novel kind of V, N dual-doped Ti3 C2 film with a three-dimensional (3D) porous structure (3D V-, N-Ti3 C2 ) based on Zn-ion pre-intercalation can be fabricated via a simple synthetic process...
March 8, 2024: Nanomaterials
https://read.qxmd.com/read/38534225/an-accelerometer-based-wearable-patch-for-robust-respiratory-rate-and-wheeze-detection-using-deep-learning
#5
JOURNAL ARTICLE
Brian Sang, Haoran Wen, Gregory Junek, Wendy Neveu, Lorenzo Di Francesco, Farrokh Ayazi
Wheezing is a critical indicator of various respiratory conditions, including asthma and chronic obstructive pulmonary disease (COPD). Current diagnosis relies on subjective lung auscultation by physicians. Enabling this capability via a low-profile, objective wearable device for remote patient monitoring (RPM) could offer pre-emptive, accurate respiratory data to patients. With this goal as our aim, we used a low-profile accelerometer-based wearable system that utilizes deep learning to objectively detect wheezing along with respiration rate using a single sensor...
February 22, 2024: Biosensors
https://read.qxmd.com/read/38533691/an-overview-and-future-perspectives-of-rechargeable-flexible-zn-air-batteries
#6
JOURNAL ARTICLE
Linming Bai, Dan Wang, Wenlong Wang, Wei Yan
Environmental friendliness and low-cost zinc-air batteries for flexible rechargeable applications have great potential in the field of flexible electronics and smart wearables owing to high energy density and long service life. However, the current technology of flexible rechargeable zinc-air batteries to meet the commercialization needs still facing enormous challenges due to the poor adaptability of each flexible component of the zinc-air batteries. This review focused on the latest progress over the past 5 years in designing and fabricating flexible self-standing air electrodes, flexible electrolytes and zinc electrodes of flexible Zn-air batteries, meanwhile the basic working principle of each component of flexible rechargeable zinc-air batteries and battery structures optimization are also described...
March 27, 2024: ChemSusChem
https://read.qxmd.com/read/38531867/quantifying-the-interfacial-triboelectricity-in-inorganic-organic-composite-mechanoluminescent-materials
#7
JOURNAL ARTICLE
Xin Pan, Yixi Zhuang, Wei He, Cunjian Lin, Lefu Mei, Changjian Chen, Hao Xue, Zhigang Sun, Chunfeng Wang, Dengfeng Peng, Yanqing Zheng, Caofeng Pan, Lixin Wang, Rong-Jun Xie
Mechanoluminescence (ML) sensing technologies open up new opportunities for intelligent sensors, self-powered displays and wearable devices. However, the emission efficiency of ML materials reported so far still fails to meet the growing application requirements due to the insufficiently understood mechano-to-photon conversion mechanism. Herein, we propose to quantify the ability of different phases to gain or lose electrons under friction (defined as triboelectric series), and reveal that the inorganic-organic interfacial triboelectricity is a key factor in determining the ML in inorganic-organic composites...
March 26, 2024: Nature Communications
https://read.qxmd.com/read/38531789/dental-artificial-intelligence-systems-a-review-of-various-data-types
#8
JOURNAL ARTICLE
Ruoyan Zhang, Haiwen Chen, Yanning Ma, Zuolin Jin
With the rapid development of dental artificial intelligence systems (DAIS), a new field known as "Data Dentistry", proposed by Schwendicke in 2021, has successfully bridged the gap between medicine and engineering. This literature review introduces advanced techniques in data collection, outlines the current state of DAIS in data processing, and anticipates the future of DAIS by emphasizing the importance of more extensive and enhanced datasets. The key findings include: Versatility of imaging data: Various types of imaging data, such as X-ray, cone beam computed tomography (CBCT), facial photos, and face and oral scans, can be transformed into datasets used by artificial intelligence systems...
March 2024: Discovery Medicine
https://read.qxmd.com/read/38531277/chirality-enhanced-2d-conductive-polymer-for-flexible-electronics-and-chiral-sensing-applications
#9
JOURNAL ARTICLE
Xiaoyan Li, Xiuxiu Yin, Zimo Wang, Junjie Ba, Junpeng Li, Yizhan Wang
Chiral two-dimensional (2D) conductive polymers, encompassing chiral, 2D, flexible, and conductive properties, constitute a novel class of material that remains largely unexplored. The infusion of chirality into 2D conductive polymers taps into the unique characteristics associated with chirality, presenting opportunities to enhance or tailor the electronic, optical, and structural properties of materials for specific technological applications. In this study, we synthesized a chiral 2D PEDOT:PMo11 V nanofilm through interfacial polymerization, effectively integrating a chiral monolayer, conductive polymer, and inorganic cluster...
March 21, 2024: Journal of Colloid and Interface Science
https://read.qxmd.com/read/38530251/enhancing-electron-ion-transport-in-sno-2-quantum-dots-decorated-polyaniline-graphene-hybrid-fibers-for-wearable-supercapacitors-with-high-energy-density
#10
JOURNAL ARTICLE
Xiaoyu Jia, Yuan Du, Fanyu Xie, Hongwei Li, Mei Zhang
Fiber-based supercapacitors are the potential power sources in the field of wearable electronics and energy storage textiles due to their unique advantages of electrochemical properties and mechanical flexibility, but achieving high energy density and practical energy supply still presents some challenges. In this study, we reported an approach of microfluidic assisted wet-spinning to fabricate SnO2 quantum dots encapsulated polyaniline/graphene hybrid fibers (SnO2 QDs@PGF) by incorporating uniformly polyaniline into graphene fibers and covalently bridging SnO2 quantum dots...
March 26, 2024: ACS Applied Materials & Interfaces
https://read.qxmd.com/read/38530048/hybrid-hydrogen-bonding-strategy-to-construct-instantaneous-self-healing-highly-elastic-ionohydrogel-for-multi-functional-electronics
#11
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
#12
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
#13
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
#14
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
#15
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
#16
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
#17
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
#18
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
#19
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
#20
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
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