keyword
MENU ▼
Read by QxMD icon Read
search

Mobile devices

keyword
https://www.readbyqxmd.com/read/28319362/tuning-the-work-function-of-printed-polymer-electrodes-by-introducing-a-fluorinated-polymer-to-enhance-the-operational-stability-in-bottom-contact-organic-field-effect-transistors
#1
Se Hyun Kim, Jiye Kim, Sooji Nam, Hwa Sung Lee, Seung Woo Lee, Jaeyoung Jang
Poly(3,4-ethylenedioxythiophene):poly(4-styrenesulfonate) (PEDOT:PSS) is a promising electrode material for organic electronic devices due to its high conductivity, good mechanical flexibility, and feasibility of easy patterning with various printing methods. The work function of PEDOT:PSS needs to be increased for efficient hole injection and the addition of a fluorine-containing material has been reported to increase the work function of PEDOT:PSS. However, it remains a challenge to print PEDOT:PSS electrodes while simultaneously tuning their work functions...
March 20, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28319145/does-aquatic-exercise-reduce-hip-and-knee-joint-loading-in-vivo-load-measurements-with-instrumented-implants
#2
Ines Kutzner, Anja Richter, Katharina Gordt, Jörn Dymke, Philipp Damm, Georg N Duda, Reiner Günzl, Georg Bergmann
Aquatic exercises are widely used for rehabilitation or preventive therapies in order to enable mobilization and muscle strengthening while minimizing joint loading of the lower limb. The load reducing effect of water due to buoyancy is a main advantage compared to exercises on land. However, also drag forces have to be considered that act opposite to the relative motion of the body segments and require higher muscle activity. Due to these opposing effects on joint loading, the load-reducing effect during aquatic exercises remains unknown...
2017: PloS One
https://www.readbyqxmd.com/read/28319029/highly-uniform-wafer-scale-synthesis-of-%C3%AE-moo-sub-3-sub-by-plasma-enhanced-chemical-vapor-deposition
#3
HyeongU Kim, Juhyun Son, Atul Kulkarni, Chisung Ahn, Ki Seok Kim, Dongjoo Shin, Geun Yeom, Taesung Kim
Molybdenum oxide (MoO<sub>3</sub>) has gained immense attention because of its high electron mobility, wide band gap, and excellent optical and catalytic properties. However, the synthesis of uniform and large-area MoO<sub>3</sub> is challenging. Here, we report the synthesis of wafer-scale α-MoO3 by plasma oxidation of Mo-deposited on Si/SiO<sub>2</sub>. Mo was oxidized by O<sub>2</sub> plasma in a plasma enhanced chemical vapor deposition (PECVD) system at 150 °C...
March 20, 2017: Nanotechnology
https://www.readbyqxmd.com/read/28317929/high-thermoelectric-power-factor-of-a-diketopyrrolopyrrole-based-low-bandgap-polymer-via-finely-tuned-doping-engineering
#4
In Hwan Jung, Cheon Taek Hong, Un-Hak Lee, Young Hun Kang, Kwang-Suk Jang, Song Yun Cho
We studied the thermoelectric properties of a diketopyrrolopyrrole-based semiconductor (PDPP3T) via a precisely tuned doping process using Iron (III) chloride. In particular, the doping states of PDPP3T film were linearly controlled depending on the dopant concentration. The outstanding Seebeck coefficient of PDPP3T assisted the excellent power factors (PFs) over 200 μW m(-1)K(-2) at the broad range of doping concentration (3-8 mM) and the maximum PF reached up to 276 μW m(-1)K(-2), which is much higher than that of poly(3-hexylthiophene), 56 μW m(-1)K(-2)...
March 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28317341/metal-doping-for-enhancing-the-photoelectrochemical-behavior-of-lafeo3-photocathodes
#5
María Isabel Díez-García, Roberto Gómez
The development of tandem devices for water photosplitting requires finding photocathodic materials based on earth-abundant elements and showing long-term stability in aqueous electrolytes. Ternary metal oxides seem to be a viable option, among which perovskites stand out. In this context, transparent and compact LaFeO3 thin film electrodes have been prepared by sol-gel, both undoped and doped with metals (M) such as magnesium or zinc. Pristine electrodes support the development of cathodic photocurrents in 0...
March 20, 2017: ChemSusChem
https://www.readbyqxmd.com/read/28316242/wafer-scale-synthesis-of-high-quality-semiconducting-two-dimensional-layered-inse-with-broadband-photoresponse
#6
Zhibin Yang, Wenjing Jie, Chun-Hin Mak, Shenghuang Lin, Huihong Lin, Xianfeng Yang, Feng Yan, Shu Ping Lau, Jianhua Hao
Large-scale synthesis of two-dimensional (2D) materials is one of the significant issues for fabricating layered materials into practical devices. As one of the typical III-VI semiconductors, InSe has attracted much attention due to its outstanding electrical transport property, attractive quantum physics characteristics and dramatic photoresponse when it is reduced to atomic scale. However, scalable synthesis of single phase 2D InSe has not yet been achieved so far, greatly hindering further fundamental studies and device applications...
March 19, 2017: ACS Nano
https://www.readbyqxmd.com/read/28316089/optimal-mems-device-for-mobility-and-zeta-potential-measurements-using-dc-electrophoresis
#7
Pascal Karam, Andrei Dukhin, Sumita Pennathur
We have developed a novel microchannel geometry that allows us to perform simple DC electrophoresis to measure the electrophoretic mobility and zeta potential of analytes and particles. In standard capillary geometries, mobility measurements using DC fields are difficult to perform. Specifically, measurements in open capillaries require knowledge of the hard to measure and often dynamic wall surface potential. Although measurements in closed capillaries eliminate this requirement, the measurements must be performed at infinitesimally small regions of zero flow where the pressure driven-flow completely cancels the electroosmotic flow (Komagata Planes)...
March 18, 2017: Electrophoresis
https://www.readbyqxmd.com/read/28304413/carbon-nanotube-thin-film-transistors-fabricated-by-an-etching-based-manufacturing-compatible-process
#8
Boyuan Tian, Xuelei Liang, Jiye Xia, Han Zhang, Guodong Dong, Qi Huang, Lianmao Peng, Sishen Xie
Carbon nanotube thin film transistors (CNT-TFTs) have been regarded as strong competitors to currently commercialized TFT technologies. Though much progress has been achieved recently, CNT-TFT research is still in the stage of laboratory research. One critical challenge for commercializing CNT-TFT technology is that the commonly used device fabrication method is a lift-off based process, which is not suitable for mass production. In this paper, we report an etching based fabrication process for CNT-TFTs, which is fully manufacturing compatible...
March 17, 2017: Nanoscale
https://www.readbyqxmd.com/read/28304057/topography-preserved-microwave-plasma-etching-for-top-down-layer-engineering-in-mos2-and-other-van-der-waals-materials
#9
Abin Varghese, Chithra H Sharma, Madhu Thalakulam
A generic and universal layer engineering strategy for van der Waals (vW) materials, scalable and compatible with the current semiconductor technology, is of paramount importance in realizing all-two-dimensional logic circuits and to move beyond the silicon scaling limit. In this letter, we demonstrate a scalable and highly controllable microwave plasma based layer engineering strategy for MoS2 and other vW materials. Using this technique we etch MoS2 flakes layer-by-layer starting from an arbitrary thickness and area down to the mono- or the few-layer limit...
March 17, 2017: Nanoscale
https://www.readbyqxmd.com/read/28303924/organic-power-electronics-transistor-operation-in-the-ka-cm-2-regime
#10
Markus P Klinger, Axel Fischer, Felix Kaschura, Johannes Widmer, Bahman Kheradmand-Boroujeni, Frank Ellinger, Karl Leo
In spite of interesting features as flexibility, organic thin-film transistors have commercially lagged behind due to the low mobilities of organic semiconductors associated with hopping transport. Furthermore, organic transistors usually have much larger channel lengths than their inorganic counterparts since high-resolution structuring is not available in low-cost production schemes. Here, we present an organic permeable-base transistor (OPBT) which, despite extremely simple processing without any high-resolution structuring, achieve a performance beyond what has so far been possible using organic semiconductors...
March 17, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28303437/molecular-dynamics-simulations-of-the-first-charge-of-a-li-ion-si-anode-nanobattery
#11
Diego E Galvez-Aranda, Victor Ponce, Jorge M Seminario
Rechargeable lithium-ion batteries are the most popular devices for energy storage but still a lot of research needs to be done to improve their cycling and storage capacity. Silicon has been proposed as an anode material because of its large theoretical capacity of ∼3600 mAh/g. Therefore, focus is needed on the lithiation process of silicon anodes where it is known that the anode increases its volume more than 300%, producing cracking and other damages. We performed molecular dynamics atomistic simulations to study the swelling, alloying, and amorphization of a silicon nanocrystal anode in a full nanobattery model during the first charging cycle...
April 2017: Journal of Molecular Modeling
https://www.readbyqxmd.com/read/28302916/advances-in-heart-failure-a-review-of-biomarkers-emerging-pharmacological-therapies-durable-mechanical-support-and-telemonitoring
#12
REVIEW
Yasbanoo Moayedi, Heather J Ross
The purpose of this review is to provide an overview of diagnosis, prognosis and management of heart failure (HF) with reduced ejection fraction (HFrEF). Specifically, this review is divided into three sections. The first section will address biomarkers. The discovery of biomarkers has allowed further understanding of the pathophysiology of HF and provides insight into potential therapeutic targets. This review will focus on novel applications of natriuretic peptides (NPs) in clinical trials. Next, emerging biomarkers of HF, such as ST2, galectin-3 and copeptin, will be discussed...
April 1, 2017: Clinical Science (1979-)
https://www.readbyqxmd.com/read/28302547/feasibility-of-using-mobile-ecg-recording-technology-to-detect-atrial-fibrillation-in-low-resource-settings
#13
Grahame F Evans, Arianna Shirk, Peter Muturi, Elsayed Z Soliman
BACKGROUND: Screening for atrial fibrillation (AF), a major risk factor for stroke that is on the rise in Africa, is becoming increasingly critical. OBJECTIVES: This study sought to examine the feasibility of using mobile electrocardiogram (ECG) recording technology to detect AF. METHODS: In this prospective observational study, we used the Kardia Mobile ECG Recorder (AliveCor, Mountain View, California) to screen 50 African adults (66% women; mean age 54...
March 13, 2017: Global Heart
https://www.readbyqxmd.com/read/28302050/implementation-of-clinical-research-trials-using-web-based-and-mobile-devices-challenges-and-solutions
#14
EDITORIAL
Roy Eagleson, Luis Altamirano-Diaz, Alex McInnis, Eva Welisch, Stefanie De Jesus, Harry Prapavessis, Meghan Rombeek, Jamie A Seabrook, Teresa Park, Kambiz Norozi
BACKGROUND: With the increasing implementation of web-based, mobile health interventions in clinical trials, it is crucial for researchers to address the security and privacy concerns of patient information according to high ethical standards. The full process of meeting these standards is often made more complicated due to the use of internet-based technology and smartphones for treatment, telecommunication, and data collection; however, this process is not well-documented in the literature...
March 17, 2017: BMC Medical Research Methodology
https://www.readbyqxmd.com/read/28301760/metal-free-motifs-for-solar-fuel-applications
#15
Stefan Ilic, Marija R Zoric, Usha Pandey Kadel, Yunjing Huang, Ksenija D Glusac
Metal-free motifs, such as graphitic carbon nitride, conjugated polymers, and doped nanostructures, are emerging as a new class of Earth-abundant materials for solar fuel devices. Although these metal-free structures show great potential, detailed mechanistic understanding of their performance remains limited. Here, we review important experimental and theoretical findings relevant to the role of metal-free motifs as either photoelectrodes or electrocatalysts. First, the light-harvesting characteristics of metal-free photoelectrodes (band energetics, exciton binding energies, charge carrier mobilities and lifetimes) are discussed and contrasted with those in traditional inorganic semiconductors (such as Si)...
March 15, 2017: Annual Review of Physical Chemistry
https://www.readbyqxmd.com/read/28301728/coupling-front-end-separations-ion-mobility-spectrometry-and-mass-spectrometry-for-enhanced-multidimensional-biological-and-environmental-analyses
#16
Xueyun Zheng, Roza Wojcik, Xing Zhang, Yehia M Ibrahim, Kristin E Burnum-Johnson, Daniel J Orton, Matthew E Monroe, Ronald J Moore, Richard D Smith, Erin S Baker
Ion mobility spectrometry (IMS) is a widely used analytical technique for rapid molecular separations in the gas phase. Though IMS alone is useful, its coupling with mass spectrometry (MS) and front-end separations is extremely beneficial for increasing measurement sensitivity, peak capacity of complex mixtures, and the scope of molecular information available from biological and environmental sample analyses. In fact, multiple disease screening and environmental evaluations have illustrated that the IMS-based multidimensional separations extract information that cannot be acquired with each technique individually...
February 23, 2017: Annual Review of Analytical Chemistry
https://www.readbyqxmd.com/read/28301331/electrical-and-photovoltaic-properties-of-residue-free-mos2-thin-films-by-liquid-exfoliation-method
#17
Seung Kyo Lee, Dongil Chu, Da Ye Song, Sang Woo Pak, Eun Kyu Kim
Molybdenum disulphide (MoS2) film fabricated by a liquid exfoliation method has a large potential on various applications because of its various advantages in mass production and low temperature process. In this study, residue-free MoS2 thin films were formed during the liquid exfoliation process and their electrical properties were characterized with interdigitated electrode. Then, MoS2 film thickness could be controlled by centrifuge condition in the range of 20~40 nm, and its carrier concentration and mobility were measured about 7...
March 16, 2017: Nanotechnology
https://www.readbyqxmd.com/read/28301318/antihypernociceptive-and-antioxidant-effects-of-petersianthus-macrocarpus-stem-bark-extracts-in-rats-with-complete-freund-s-adjuvant-induced-persistent-inflammatory-pain
#18
Francis Desire Tatsinkou Bomba, Bibiane Aimée Wandji, Christian Kuete Fofié, Albert Kamanyi, Télesphore Benoit Nguelefack
Background Petersianthus macrocarpus (P. Beauv.) Liben (Lecythidaceae) is a plant used in Cameroonian folk medicine to cure ailments such as inflammation and pain. Previous work showed that aqueous (AEPM) and methanol (MEPM) extracts from the stem bark of P. macrocarpus possess acute analgesic activities. The present study evaluates whether the same extracts could inhibit persistent hyperalgesia induced by complete Freund's adjuvant (CFA) in rats. Methods Inflammatory pain was induced by intraplantar injection of CFA into the left hind paw of Wistar rats...
March 15, 2017: Journal of Complementary & Integrative Medicine
https://www.readbyqxmd.com/read/28300955/prototype-app-for-voice-therapy-a-peer-review
#19
Paula Lavaissiéri, Paulo Eduardo Damasceno Melo
Purpose: Voice speech therapy promotes changes in patients' voice-related habits and rehabilitation. Speech-language therapists use a host of materials ranging from pictures to electronic resources and computer tools as aids in this process. Mobile technology is attractive, interactive and a nearly constant feature in the daily routine of a large part of the population and has a growing application in healthcare. To develop a prototype application for voice therapy, submit it to peer assessment, and to improve the initial prototype based on these assessments...
March 9, 2017: CoDAS
https://www.readbyqxmd.com/read/28300133/observation-of-anomalous-hall-effect-in-a-non-magnetic-two-dimensional-electron-system
#20
D Maryenko, A S Mishchenko, M S Bahramy, A Ernst, J Falson, Y Kozuka, A Tsukazaki, N Nagaosa, M Kawasaki
Anomalous Hall effect, a manifestation of Hall effect occurring in systems without time-reversal symmetry, has been mostly observed in ferromagnetically ordered materials. However, its realization in high-mobility two-dimensional electron system remains elusive, as the incorporation of magnetic moments deteriorates the device performance compared to non-doped structure. Here we observe systematic emergence of anomalous Hall effect in various MgZnO/ZnO heterostructures that exhibit quantum Hall effect. At low temperatures, our nominally non-magnetic heterostructures display an anomalous Hall effect response similar to that of a clean ferromagnetic metal, while keeping a large anomalous Hall effect angle θAHE≈20°...
March 16, 2017: Nature Communications
keyword
keyword
11523
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"