keyword
MENU ▼
Read by QxMD icon Read
search

Sensors, wearables

keyword
https://www.readbyqxmd.com/read/28650141/flexible-and-foldable-fully-printed-carbon-black-conductive-nanostructures-on-paper-for-high-performance-electronic-electrochemical-and-wearable-devices
#1
Murilo Santhiago, Cátia C Côrrea, Juliana Silva Bernardes, Mariane Peres Pereira, Letícia J M Oliveira, Mathias Strauss, Carlos César Bof Bufon
In this work, we demonstrate the first example of fully-printed carbon nanomaterials on paper with unique features, aiming the fabrication of functional electronic and electrochemical devices. Bare and modified inks were prepared by combining carbon black and cellulose acetate to achieve high-performance conductive tracks with low sheet resistance. The carbon black tracks withstand extremely high folding cycles (> 20000 cycles), a new record-high with a response loss of less than 10%. The conductive tracks can also be used as 3D paper-based electrochemical cells with high heterogeneous rate constants - a feature that opens a myriad of electrochemical applications...
June 26, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28649967/structural-perturbations-on-huntingtin-n17-domain-during-its-folding-on-2d-nanomaterials
#2
Leili Zhang, Mei Feng, Ruhong Zhou, Binquan Luan
A globular protein's folded structure in its physiological environment is largely determined by its amino acid sequence. Recently, newly discovered transformer proteins as well as intrinsically disordered proteins may adopt the folding-upon-binding mechanism where their secondary structures are highly dependent on their binding partners. Due to the various applications of nanomaterials in biological sensors and potential wearable devices, it is important to discover possible conformational changes of proteins on nanomaterials...
June 26, 2017: Nanotechnology
https://www.readbyqxmd.com/read/28645093/identification-of-key-outcome-measures-when-using-the-instrumented-timed-up-and-go-and-or-posturography-for-fall-screening
#3
Renee Beach Sample, Allison L Kinney, Kurt Jackson, Wiebke Diestelkamp, Kimberly Edginton Bigelow
The Timed Up and Go (TUG) has been commonly used for fall risk assessment. The instrumented Timed Up and Go (iTUG) adds wearable sensors to capture sub-movements and may be more sensitive. Posturography assessments have also been used for determining fall risk. This study used stepwise logistic regression models to identify key outcome measures for the iTUG and posturography protocols. The effectiveness of the models containing these measures in differentiating fallers from non-fallers were then compared for each: iTUG total time duration only, iTUG, posturography, and combined iTUG and posturography assessments...
June 10, 2017: Gait & Posture
https://www.readbyqxmd.com/read/28644620/nanofibrous-smart-fabrics-from-twisted-yarns-of-electrospun-piezo-polymer
#4
Enlong Yang, Zhe Xu, Lucas Chur, Ali Behroozfar, Mahmoud Baniasadi, Salvador Moreno, Jiacheng Huang, Jules Gilligan, Majid Minary-Jolandan
Smart textiles are envisioned to make a paradigm shift in wearable technologies to directly impart functionality into the fibers rather than integrating sensors and electronics onto conformal substrates or skin in wearable devices. Among smart materials, piezoelectric fabrics have not been widely reported, yet. Piezoelectric smart fabrics can be used for mechanical energy harvesting, for thermal energy harvesting through the pyroelectric effect, for ferroelectric applications, as pressure and force sensors, for motion detection, and for ultrasonic sensing...
June 23, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28641764/are-static-and-functional-balance-abilities-related-in-individuals-with-multiple-sclerosis
#5
Massimiliano Pau, Micaela Porta, Giancarlo Coghe, Federica Corona, Giuseppina Pilloni, Lorena Lorefice, Maria Giovanna Marrosu, Eleonora Cocco
BACKGROUND: In people with Multiple Sclerosis (pwMS), balance assessment is essential in estimating the risk of falls, monitoring disease progression and verifying the effectiveness of rehabilitative treatment. Clinical tools and instrumental techniques are available for testing static and dynamic balance, but the relationship between such abilities is still not clear. Having information about this link would be important in properly planning the type and number of tests to administer...
July 2017: Multiple Sclerosis and related Disorders
https://www.readbyqxmd.com/read/28640386/photoresponsive-smart-coloration-electrochromic-supercapacitor
#6
Tae Gwang Yun, Donghyuk Kim, Yong Ho Kim, Minkyu Park, Seungmin Hyun, Seung Min Han
Electrochromic devices have been widely adopted in energy saving applications by taking advantage of the electrode coloration, but it is critical to develop a new electrochromic device that can undergo smart coloration and can have a wide spectrum in transmittance in response to input light intensity while also functioning as a rechargeable energy storage system. In this study, a photoresponsive electrochromic supercapacitor based on cellulose-nanofiber/Ag-nanowire/reduced-graphene-oxide/WO3 -composite electrode that is capable of undergoing "smart" reversible coloration while simultaneously functioning as a reliable energy-storage device is developed...
June 22, 2017: Advanced Materials
https://www.readbyqxmd.com/read/28637735/development-of-the-tailored-rett-intervention-and-assessment-longitudinal-trial-database-and-the-rett-evaluation-of-symptoms-and-treatments-rest-questionnaire
#7
Paramala Santosh, Kate Lievesley, Federico Fiori, Jatinder Singh
INTRODUCTION: Rett syndrome (RTT) is a pervasive neurodevelopmental disorder that presents with deficits in brain functioning leading to language and learning regression, characteristic hand stereotypies and developmental delay. Different mutations in the gene implicated in RTT-methyl-CpG-binding protein 2 (MECP2) establishes RTT as a disorder with divergent symptomatology ranging from individuals with severe to milder phenotypes. A reliable and single multidimensional questionnaire is needed that can embrace all symptoms, and the relationships between them, and can map clinically meaningful data to symptomatology across the lifespan in patients with RTT...
June 21, 2017: BMJ Open
https://www.readbyqxmd.com/read/28636323/ultrafast-dynamic-pressure-sensors-based-on-graphene-hybrid-structure
#8
Shanbiao Liu, Xing Wu, Dongdong Zhang, Congwei Guo, Peng Wang, Weida Hu, Xinming Li, Xiaofeng Zhou, Hejun Xu, Chen Luo, Jian Zhang, Jun-Hao Chu
The development of artificial skin is drawing tremendous attention due to its potential applications in sensing a variety of physical quantities, such as tactility, vibration, and temperature. A strain sensor that can mimic and surpass the subtle pressure-sensing properties of natural skin requires rational material design and array-accessible devices. Here, we report a new and facile preparation of a graphene hybrid structure with an ultrafast dynamic pressure response. Graphene oxide nanosheets are used as a surfactant to prevent graphene restacking in aqueous solution...
June 21, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28636322/spirally-structured-conductive-composites-for-highly-stretchable-robust-conductors-and-sensors
#9
Xiaodong Wu, Yangyang Han, Xinxing Zhang, Canhui Lu
Flexible and stretchable electronics are highly desirable for next generation devices. However, stretchability and conductivity are fundamentally difficult to combine for conventional conductive composites, which restricts their widespread applications especially as stretchable electronics. Here, we innovatively develop a new class of highly stretchable and robust conductive composites via a simple and scalable structural approach. Briefly, carbon nanotubes are spray-coated onto a self-adhesive rubber film, followed by rolling up the film completely to create a spirally layered structure within the composites...
June 21, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28632058/assessment-of-model-based-image-matching-for-future-reconstruction-of-unhelmeted-sport-head-impact-kinematics
#10
Gregory J Tierney, Hamed Joodaki, Tron Krosshaug, Jason L Forman, Jeff R Crandall, Ciaran K Simms
Player-to-player contact inherent in many unhelmeted sports means that head impacts are a frequent occurrence. Model-Based Image-Matching (MBIM) provides a technique for the assessment of three-dimensional linear and rotational motion patterns from multiple camera views of a head impact event, but the accuracy is unknown for this application. The goal of this study is to assess the accuracy of the MBIM method relative to reflective marker-based motion analysis data for estimating six degree of freedom head displacements and velocities in a staged pedestrian impact scenario at 40 km/h...
February 28, 2017: Sports Biomechanics
https://www.readbyqxmd.com/read/28631474/a-flexible-dual-mode-tactile-sensor-derived-from-three-dimensional-porous-carbon-architecture
#11
Zifeng Wang, Ruijuan Jiang, Guangming Li, Yiyan Chen, Zijie Tang, Yukun Wang, Zhuoxin Liu, Hongbo Jiang, Chunyi Zhi
Detecting and monitoring varieties of human activities is one of the most essential functions and design purposes of different kinds of wearable sensors. Apart from excellent sensitivity and durability, limited by the materials, most of the sensors reported in the literatures are only capable of detecting signals based on sole mechanism. In this work, a dual-mode flexible sensor derived from high temperature pyrolysized 3D carbon sponge (C-Sponge) was proposed as peculiar sensor materials that are able to detect human activities based on fundamentally different mechanisms, either by triboelectric effect or by piezoresistive effect...
June 20, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28631139/a-systematic-review-of-wearable-patient-monitoring-systems-current-challenges-and-opportunities-for-clinical-adoption
#12
Mirza Mansoor Baig, Hamid GholamHosseini, Aasia A Moqeem, Farhaan Mirza, Maria Lindén
The aim of this review is to investigate barriers and challenges of wearable patient monitoring (WPM) solutions adopted by clinicians in acute, as well as in community, care settings. Currently, healthcare providers are coping with ever-growing healthcare challenges including an ageing population, chronic diseases, the cost of hospitalization, and the risk of medical errors. WPM systems are a potential solution for addressing some of these challenges by enabling advanced sensors, wearable technology, and secure and effective communication platforms between the clinicians and patients...
July 2017: Journal of Medical Systems
https://www.readbyqxmd.com/read/28628594/telehealth-wearable-sensors-and-the-internet-will-they-improve-stroke-outcomes-through-increased-intensity-of-therapy-motivation-and-adherence-to-rehabilitation-programs
#13
Jane H Burridge, Alan Chong W Lee, Ruth Turk, Maria Stokes, Jill Whitall, Ravi Vaidyanathan, Phil Clatworthy, Ann-Marie Hughes, Claire Meagher, Enrico Franco, Lucy Yardley
BACKGROUND AND PURPOSE: Stroke, predominantly a condition of older age, is a major cause of acquired disability in the global population and puts an increasing burden on health care resources. Clear evidence for the importance of intensity of therapy in optimizing functional outcomes is found in animal models, supported by neuroimaging and behavioral research, and strengthened by recent meta-analyses from multiple clinical trials. However, providing intensive therapy using conventional treatment paradigms is expensive and sometimes not feasible because of social and environmental factors...
July 2017: Journal of Neurologic Physical Therapy: JNPT
https://www.readbyqxmd.com/read/28627862/feasibility-and-efficacy-of-wearable-devices-for-upper-limb-rehabilitation-in-patients-with-chronic-stroke-a-randomized-controlled-pilot-study
#14
Li-Fong Lin, Yi-Jia Lin, Zi-Hao Lin, Li-Yun Chuang, Wei-Chun Hsu, Yuan-Hsiang Lin
BACKGROUND: Wearable devices based on inertial measurement units through wireless sensor networks have many applications such as real-time motion monitoring and functional outcome assessment of stroke rehabilitation. However, additional investigations are warranted to validate their clinical value, particularly in detecting the synergy patterns of movements after stroke. AIM: To explore the feasibility and efficacy of wearable devices for upper limb rehabilitation in patients with chronic stroke and to compare the intervention effects (e...
June 19, 2017: European Journal of Physical and Rehabilitation Medicine
https://www.readbyqxmd.com/read/28627224/real-time-smart-textile-based-system-to-monitor-pressure-offloading-of-diabetic-foot-ulcers
#15
Andrea Raviglione, Roberto Reif, Maurizio Macagno, Davide Vigano, Justin Schram, David Armstrong
BACKGROUND: The lifetime risk of developing a diabetic foot ulcer (DFU) is at least 25%. A DFU carries a 50% risk for infection and at least 20% of those receive some form of amputation. The most significant parameter that prevents or delays ulcer healing is high plantar pressure. To improve the patient's healing process, the DFU's plantar pressure should remain cumulatively low. Therefore, a tool that continuously measures the DFU loading, and provides real-time feedback can improve the healing outcome...
February 1, 2017: Journal of Diabetes Science and Technology
https://www.readbyqxmd.com/read/28627217/using-plantar-electrical-stimulation-to-improve-postural-balance-and-plantar-sensation-among-patients-with-diabetic-peripheral-neuropathy
#16
Bijan Najafi, Talal K Talal, Gurtej Singh Grewal, Robert Menzies, David G Armstrong, Lawrence A Lavery
OBJECTIVE: People with diabetic peripheral neuropathy (DPN) often exhibit deteriorations in motor-performance mainly due to lack of plantar-sensation. The study explored effectiveness of plantar electrical-stimulation therapy to enhance motor-performance among people with DPN. DESIGN AND METHODS: Using a double-blinded model, 28 volunteers with DPN (age: 57.8 ± 10.2 years) were recruited and randomized to either intervention (IG: n = 17) or control (CG: n = 11) group...
February 1, 2017: Journal of Diabetes Science and Technology
https://www.readbyqxmd.com/read/28622664/mechanical-imaging-of-soft-tissues-with-a-highly-compliant-tactile-sensing-array
#17
Bin Li, Ye Shi, Adam K Fontecchio, Yon Visell
The mechanical imaging of lumps in tissues via surface measurements can permit the noninvasive detection of disease-related differences in body tissues. In routine clinical palpation, physicians frequently make decisions based on mechanical properties that they infer from tactile information felt via touch, but these examinations currently yield little quantitative information. This has motivated the development of electronic methods for mechanical imaging. However, conventional tactile sensors are rigid, unable to conform to curved geometries, and are not adaptable to the shape of all body parts, limiting their applicability in biomedical sensing applications...
June 13, 2017: IEEE Transactions on Bio-medical Engineering
https://www.readbyqxmd.com/read/28621709/an-unobtrusive-fall-detection-and-alerting-system-based-on-kalman-filter-and-bayes-network-classifier
#18
Jian He, Shuang Bai, Xiaoyi Wang
Falls are one of the main health risks among the elderly. A fall detection system based on inertial sensors can automatically detect fall event and alert a caregiver for immediate assistance, so as to reduce injuries causing by falls. Nevertheless, most inertial sensor-based fall detection technologies have focused on the accuracy of detection while neglecting quantization noise caused by inertial sensor. In this paper, an activity model based on tri-axial acceleration and gyroscope is proposed, and the difference between activities of daily living (ADLs) and falls is analyzed...
June 16, 2017: Sensors
https://www.readbyqxmd.com/read/28621041/extraordinarily-stretchable-all-carbon-collaborative-nanoarchitectures-for-epidermal-sensors
#19
Yichen Cai, Jie Shen, Ziyang Dai, Xiaoxian Zang, Qiuchun Dong, Guofeng Guan, Lain-Jong Li, Wei Huang, Xiaochen Dong
Multifunctional microelectronic components featuring large stretchability, high sensitivity, high signal-to-noise ratio (SNR), and broad sensing range have attracted a huge surge of interest with the fast developing epidermal electronic systems. Here, the epidermal sensors based on all-carbon collaborative percolation network are demonstrated, which consist 3D graphene foam and carbon nanotubes (CNTs) obtained by two-step chemical vapor deposition processes. The nanoscaled CNT networks largely enhance the stretchability and SNR of the 3D microarchitectural graphene foams, endowing the strain sensor with a gauge factor as high as 35, a wide reliable sensing range up to 85%, and excellent cyclic stability (>5000 cycles)...
June 16, 2017: Advanced Materials
https://www.readbyqxmd.com/read/28615137/stress-measurement-in-surgeons-and-residents-using-a-smart-patch
#20
Mariska Weenk, Alexander P B Alken, Lucien J L P G Engelen, Sebastian J H Bredie, Tom H van de Belt, Harry van Goor
BACKGROUND: Stress may negatively affect surgeons' performance during surgical procedures, jeopardizing patient safety. For measuring stress, complex methods are used that cannot record stress real time. This study reports stress measurements in surgeons and residents using a novel patch sensor to identify activities and risk factors of stress. METHODS: In this explorative study, surgeons and residents wore the HealthPatch™ during all daily activities for 2-3 days...
June 6, 2017: American Journal of Surgery
keyword
keyword
57704
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"