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https://www.readbyqxmd.com/read/29345473/highly-sensitive-and-ultrastable-skin-sensors-for-biopressure-and-bioforce-measurements-based-on-hierarchical-microstructures
#1
Qi-Jun Sun, Jiaqing Zhuang, Shishir Venkatesh, Ye Zhou, Su-Ting Han, Wei Wu, Ka-Wai Kong, Wen-Jung Li, Xianfeng Chen, Robert K Y Li, Vellaisamy A L Roy
Piezoresistive microsensors are considered to be essential components of the future wearable electronic devices. However, the expensive cost, complex fabrication technology, poor stability, and low yield have limited their developments for practical applications. Here, we present a cost-effective, relatively simple, and high-yield fabrication approach to construct highly sensitive and ultrastable piezoresistive sensors using a bioinspired hierarchically structured graphite/polydimethylsiloxane composite as the active layer...
January 18, 2018: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/29342966/fabrication-of-a-textile-based-wearable-blood-leakage-sensor-using-screen-offset-printing
#2
Ken-Ichi Nomura, Yoshinori Horii, Shusuke Kanazawa, Yasuyuki Kusaka, Hirobumi Ushijima
We fabricate a wearable blood leakage sensor on a cotton textile by combining two newly developed techniques. First, we employ a screen-offset printing technique that avoids blurring, short circuiting between adjacent conductive patterns, and electrode fracturing to form an interdigitated electrode structure for the sensor on a textile. Furthermore, we develop a scheme to distinguish blood from other substances by utilizing the specific dielectric dispersion of blood observed in the sub-megahertz frequency range...
January 15, 2018: Sensors
https://www.readbyqxmd.com/read/29342960/a-low-cost-inkjet-printed-aptamer-based-electrochemical-biosensor-for-the-selective-detection-of-lysozyme
#3
Niazul Islam Khan, Alec G Maddaus, Edward Song
Recently, inkjet-printing has gained increased popularity in applications such as flexible electronics and disposable sensors, as well as in wearable sensors because of its multifarious advantages. This work presents a novel, low-cost immobilization technique using inkjet-printing for the development of an aptamer-based biosensor for the detection of lysozyme, an important biomarker in various disease diagnosis. The strong affinity between the carbon nanotube (CNT) and the single-stranded DNA is exploited to immobilize the aptamers onto the working electrode by printing the ink containing the dispersion of CNT-aptamer complex...
January 15, 2018: Biosensors
https://www.readbyqxmd.com/read/29342953/review-of-recent-metamaterial-microfluidic-sensors
#4
REVIEW
Ahmed Salim, Sungjoon Lim
Metamaterial elements/arrays exhibit a sensitive response to fluids yet with a small footprint, therefore, they have been an attractive choice to realize various sensing devices when integrated with microfluidic technology. Micro-channels made from inexpensive biocompatible materials avoid any contamination from environment and require only microliter-nanoliter sample for sensing. Simple design, easy fabrication process, light weight prototype, and instant measurements are advantages as compared to conventional (optical, electrochemical and biological) sensing systems...
January 15, 2018: Sensors
https://www.readbyqxmd.com/read/29341881/clinical-implications-of-technological-advances-in-screening-for-atrial-fibrillation
#5
REVIEW
Nikhil Singh, Sung Chun, David Hadley, Victor Froelicher
The incidence of atrial fibrillation (AF) continues to increase worldwide as people live longer. AF is the leading cause of stroke among patients older than 75 years and is responsible for at least 15% of all strokes. Industry has responded to this problem with a plethora of monitoring devices. These include single lead ECG adhesive sensors, implantable loop recorders, smartphone attachments and wearables. This review will concentrate on clinical studies using these technologies. There are wearables including watches and watch-like devices that will be mentioned but these have not been validated for clinical use...
January 13, 2018: Progress in Cardiovascular Diseases
https://www.readbyqxmd.com/read/29338959/a-new-window-into-psychosis-the-rise-digital-phenotyping-smartphone-assessment-and-mobile-monitoring
#6
John Torous, Matcheri Keshavan
This commentary piece discusses recent advances in the use of mobile technologies like smartphone and wearable sensors for schizophrenia research. By framing both the opportunities as well as challenges for the field, this piece aims to frame the both current and future research efforts.
January 12, 2018: Schizophrenia Research
https://www.readbyqxmd.com/read/29338570/a-novel-rubric-to-evaluate-wearable-cameras-for-assessment-of-interrater-reliability
#7
Amanda C Jozkowski, Echo A Presgraves, Krista L Hodges, Erica N Wirth, Nicole E Brandstetter, Molly T Thayer
Research has reported on traditional methods of assessing interrater reliability but, currently, no such standard protocol exists for selection of alternative methods of assessing interrater reliability, such as wearable video cameras. The professions of occupational therapy and occupational science take a unique ecological perspective when evaluating individuals, which focuses on the naturalistic perspective of an individual, ideally resulting in optimal performance. Given current advancements in technology, wearable, low-cost, unobtrusive, first-person view digital video cameras are readily available for use in research...
January 1, 2018: OTJR: Occupation, Participation and Health
https://www.readbyqxmd.com/read/29334198/enzyme-based-glucose-sensor-from-invasive-to-wearable-device
#8
REVIEW
Hyunjae Lee, Yongseok Joseph Hong, Seungmin Baik, Taeghwan Hyeon, Dae-Hyeong Kim
Blood glucose concentration is a key indicator of patients' health, particularly for symptoms associated with diabetes mellitus. Because of the large number of diabetic patients, many approaches for glucose measurement have been studied to enable continuous and accurate glucose level monitoring. Among them, electrochemical analysis is prominent because it is simple and quantitative. This technology has been incorporated into commercialized and research-level devices from simple test strips to wearable devices and implantable systems...
January 15, 2018: Advanced Healthcare Materials
https://www.readbyqxmd.com/read/29331656/effect-of-a-wearable-patient-sensor-on-care-delivery-for-preventing-pressure-injuries-in-acutely-ill-adults-a-pragmatic-randomized-clinical-trial-ls-hapi-study
#9
David Pickham, Nic Berte, Mike Pihulic, Andre Valdez, Barbara Mayer, Manisha Desai
IMPORTANCE: Though theoretically sound, studies have failed to demonstrate the benefit of routine repositioning of at-risk patients for the prevention of hospital acquired pressure injuries. OBJECTIVE: To assess the clinical effectiveness of a wearable patient sensor to improve care delivery and patient outcomes by increasing the total time with turning compliance and preventing pressure injuries in acutely ill patients. DESIGN: Pragmatic, investigator initiated, open label, single site, randomized clinical trial...
December 30, 2017: International Journal of Nursing Studies
https://www.readbyqxmd.com/read/29330154/novel-wearable-seismocardiography-and-machine-learning-algorithms-can-assess-clinical-status-of-heart-failure-patients
#10
Omer T Inan, Maziyar Baran Pouyan, Abdul Q Javaid, Sean Dowling, Mozziyar Etemadi, Alexis Dorier, J Alex Heller, A Ozan Bicen, Shuvo Roy, Teresa De Marco, Liviu Klein
BACKGROUND: Remote monitoring of patients with heart failure (HF) using wearable devices can allow patient-specific adjustments to treatments and thereby potentially reduce hospitalizations. We aimed to assess HF state using wearable measurements of electrical and mechanical aspects of cardiac function in the context of exercise. METHODS AND RESULTS: Patients with compensated (outpatient) and decompensated (hospitalized) HF were fitted with a wearable ECG and seismocardiogram sensing patch...
January 2018: Circulation. Heart Failure
https://www.readbyqxmd.com/read/29322351/from-pacemaker-to-wearable-techniques-for-ecg-detection-systems
#11
REVIEW
Ashish Kumar, Rama Komaragiri, Manjeet Kumar
With the alarming rise in the deaths due to cardiovascular diseases (CVD), present medical research scenario places notable importance on techniques and methods to detect CVDs. As adduced by world health organization, technological proceeds in the field of cardiac function assessment have become the nucleus and heart of all leading research studies in CVDs in which electrocardiogram (ECG) analysis is the most functional and convenient tool used to test the range of heart-related irregularities. Most of the approaches present in the literature of ECG signal analysis consider noise removal, rhythm-based analysis, and heartbeat detection to improve the performance of a cardiac pacemaker...
January 11, 2018: Journal of Medical Systems
https://www.readbyqxmd.com/read/29321122/technology-assisted-behavioral-intervention-to-extend-sleep-duration-development-and-design-of-the-sleep-bunny-mobile-app
#12
Kelly Glazer Baron, Jennifer Duffecy, Kathryn Reid, Mark Begale, Lauren Caccamo
BACKGROUND: Despite the high prevalence of short sleep duration (29.2% of adults sleep <6 hours on weekdays), there are no existing theory-based behavioral interventions to extend sleep duration. The popularity of wearable sleep trackers provides an opportunity to engage users in interventions. OBJECTIVE: The objective of this study was to outline the theoretical foundation and iterative process of designing the "Sleep Bunny," a technology-assisted sleep extension intervention including a mobile phone app, wearable sleep tracker, and brief telephone coaching...
January 10, 2018: JMIR Mental Health
https://www.readbyqxmd.com/read/29320885/a-pilot-study-validating-select-research-grade-and-consumer-based-wearables-throughout-a-range-of-dynamic-exercise-intensities-in-persons-with-and-without-type-1-diabetes-a-novel-approach
#13
Loren Yavelberg, Dessi Zaharieva, Ali Cinar, Michael C Riddell, Veronica Jamnik
BACKGROUND: The increasing popularity of wearable technology necessitates the evaluation of their accuracy to differentiate physical activity (PA) intensities. These devices may play an integral role in customizing PA interventions for primary prevention and secondary management of chronic diseases. For example, in persons with type 1 diabetes (T1D), PA greatly affects glucose concentrations depending on the intensity, mode (ie, aerobic, anaerobic, mixed), and duration. This variability in glucose responses underscores the importance of implementing dependable wearable technology in emerging avenues such as artificial pancreas systems...
January 1, 2018: Journal of Diabetes Science and Technology
https://www.readbyqxmd.com/read/29320232/barriers-to-the-adoption-of-wearable-sensors-in-the-workplace-a-survey-of-occupational-safety-and-health-professionals
#14
Mark C Schall, Richard F Sesek, Lora A Cavuoto
OBJECTIVE: To gather information on the (a) types of wearable sensors, particularly personal activity monitors, currently used by occupational safety and health (OSH) professionals; (b) potential benefits of using such technologies in the workplace; and (c) perceived barriers preventing the widespread adoption of wearable sensors in industry. BACKGROUND: Wearable sensors are increasingly being promoted as a means to improve employee health and well-being, and there is mounting evidence supporting their use as exposure assessment and personal health tools...
January 1, 2018: Human Factors
https://www.readbyqxmd.com/read/29315850/inductor-free-wireless-energy-delivery-via-maxwell-s-displacement-current-from-an-electrodeless-triboelectric-nanogenerator
#15
Xia Cao, Meng Zhang, Jinrong Huang, Tao Jiang, Jingdian Zou, Ning Wang, Zhong Lin Wang
Wireless power delivery has been a dream technology for applications in medical science, security, radio frequency identification (RFID), and the internet of things, and is usually based on induction coils and/or antenna. Here, a new approach is demonstrated for wireless power delivery by using the Maxwell's displacement current generated by an electrodeless triboelectric nanogenerator (TENG) that directly harvests ambient mechanical energy. A rotary electrodeless TENG is fabricated using the contact and sliding mode with a segmented structure...
January 5, 2018: Advanced Materials
https://www.readbyqxmd.com/read/29301738/second-version-of-google-glass-as-a-wearable-socio-affective-aid-positive-school-desirability-high-usability-and-theoretical-framework-in-a-sample-of-children-with-autism
#16
Ned T Sahin, Neha U Keshav, Joseph P Salisbury, Arshya Vahabzadeh
BACKGROUND: Computerized smartglasses are being developed as an assistive technology for daily activities in children and adults with autism spectrum disorder (ASD). While smartglasses may be able to help with educational and behavioral needs, their usability and acceptability in children with ASD is largely unknown. There have been reports of negative social perceptions surrounding smartglasses use in mainstream populations, a concern given that assistive technologies may already carry their own stigma...
January 4, 2018: JMIR Human Factors
https://www.readbyqxmd.com/read/29300849/analysis-of-free-living-gait-in-older-adults-with-and-without-parkinson-s-disease-and-with-and-without-a-history-of-falls-identifying-generic-and-disease-specific-characteristics
#17
Silvia Del Din, Brook Galna, Alan Godfrey, Esther Mj Bekkers, Elisa Pelosin, Freek Nieuwhof, Anat Mirelman, Jeffrey M Hausdorff, Lynn Rochester
Background: Falls are associated with gait impairments in older adults (OA) and Parkinson's disease (PD). Current approaches for evaluating falls risk are based on self-report or one-time assessment and may be suboptimal. Wearable technology allows gait to be measured continuously in free-living conditions. The aim of this study was to explore generic and specific associations in free-living gait in fallers and non-fallers with and without PD. Methods: 277 fallers (155 PD, 122 older adults (OA)) who fell twice or more in the previous 6 months and 65 non-fallers (15 PD, 50 OA) were tested...
December 30, 2017: Journals of Gerontology. Series A, Biological Sciences and Medical Sciences
https://www.readbyqxmd.com/read/29300085/energetically-autonomous-wearable-and-multifunctional-sensor
#18
Hsing-Hua Hsieh, Fang-Chi Hsu, Yang-Fang Chen
Self-powered tactile sensing is the upcoming technological orientation for developing compact, robust, and energy-saving devices in human-machine interfacing and electronic skin. Here, we report an intriguing type of sensing device composed of a Pt crack-based sensor in series with a polymer solar cell as a building block for energetically autonomous, wearable, and tactile sensor. This coplanar device enables human activity and physiological monitoring under indoor light illumination (2 mW/cm2) with acceptable and readible output signals...
January 4, 2018: ACS Sensors
https://www.readbyqxmd.com/read/29287742/investigating-real-time-monitoring-of-fatigue-indicators-of-new-zealand-forestry-workers
#19
Judy Bowen, Annika Hinze, Christopher Griffiths
The New Zealand forestry industry has one of the highest fatality and injury rates of any industrial sector in the country. Worker fatigue has been identified as one of the main contributing factors. Currently no independent and objective large data source is available that might support an analysis of this, or provide the basis for ongoing monitoring to further investigate. In order to successfully manage fatigue in the forestry workplace, we must identify suitable ways of detecting it. Industry partners are increasingly looking at monitoring solutions (particularly lightweight, wearable technology) that aim to measure worker activities and physiological metrics in order to determine if they are fatigued...
December 27, 2017: Accident; Analysis and Prevention
https://www.readbyqxmd.com/read/29284544/comprehensive-measurement-of-stroke-gait-characteristics-with-a-single-accelerometer-in-the-laboratory-and-community-a-feasibility-validity-and-reliability-study
#20
Sarah A Moore, Aodhan Hickey, Sue Lord, Silvia Del Din, Alan Godfrey, Lynn Rochester
BACKGROUND: Application of objective measurement of stroke gait with accelerometer-based wearable technology and associated algorithms is increasing, despite reports questioning the accuracy of this technique in quantifying specific stroke-related gait impairments. The aim of this study is to determine the feasibility, validity and reliability of a low-cost open-source system incorporating algorithms and a single tri-axial accelerometer-based wearable to quantify gait characteristics in the laboratory and community post-stroke...
December 29, 2017: Journal of Neuroengineering and Rehabilitation
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