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https://www.readbyqxmd.com/read/28231011/ultrahigh-responsivity-photodetectors-from-perovskite-nanowire-arrays-for-sequentially-tunable-spectral-measurement
#1
Wei Deng, Liming Huang, Xiuzhen Xu, Xiujuan Zhang, Xiangcheng Jin, Shuit-Tong Lee, Jiansheng Jie
Compared with polycrystalline films, single-crystalline methylammonium lead halide (MAPbX3, X = halogen) perovskite nanowires (NWs) with well-defined structure possess superior optoelectronic properties for optoelectronic applications. However, most of the prepared perovskite NWs exhibit properties below expectations due to poor crystalline quality and rough surfaces. It also remains a challenge to achieve aligned growth of single-crystalline perovskite NWs for integrated device applications. Here, we report a facile fluid-guided anti-solvent vapor-assisted crystallization (FGAVC) method for large-scale fabrication of high-quality single-crystalline MAPb(I1-xBrx)3 (X = 0, 0...
February 23, 2017: Nano Letters
https://www.readbyqxmd.com/read/28230445/benchmarking-insulin-treatment-persistence-among-patients-with-type-2-diabetes-across-different-u-s-payer-segments
#2
Wenhui Wei, Jenny Jiang, Youbei Lou, Sohini Ganguli, Mark S Matusik
BACKGROUND: Treatment persistence with basal insulins is crucial to achieving sustained glycemic control, which is associated with a reduced risk of microvascular disease and other complications of type 2 diabetes (T2D). However, studies suggest that persistence with basal insulin treatment is often poor. OBJECTIVE: To measure and benchmark real-world basal insulin treatment persistence among patients with T2D across different payer segments in the United States...
March 2017: Journal of Managed Care & Specialty Pharmacy
https://www.readbyqxmd.com/read/28230340/all-inkjet-printed-metal-oxide-thin-film-transistor-array-with-good-stability-and-uniformity-using-surface-energy-patterns
#3
Yuzhi Li, Linfeng Lan, Sheng Sun, Zhenguo Lin, Peixiong Gao, Wei Song, Erlong Song, Peng Zhang, Junbiao Peng
An array of inkjet-printed metal-oxide thin-film transistors (TFTs) is demonstrated for the first time with the assistance of surface-energy patterns prepared by printing pure solvent to etch the ultrathin hydrophobic layer. The surface-energy patterns not only restrained the spreading of inks but also provided a facile way to regulate the morphology of metal oxide films without optimizing ink formulation. The fully printed InGaO TFT devices in the array exhibited excellent electron transport characteristics with a maximum mobility of 11...
February 23, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28230216/molecular-aggregation-of-naphthalimide-organic-semiconductors-assisted-by-amphiphilic-and-lipophilic-interactions-a-joint-theoretical-and-experimental-study
#4
I Arrechea-Marcos, P de Echegaray, M J Mancheño, M C Ruiz Delgado, M M Ramos, J A Quintana, J M Villalvilla, M A Díaz-García, J T López Navarrete, R Ponce Ortiz, J L Segura
Amphiphilic and lipophilic donor-acceptor naphthalimide-oligothiophene assemblies exhibiting almost identical intramolecular properties, but differing in their intermolecular interactions, have been synthesized. Here we analyze the effect of replacing the normally used lipophilic alkyl chains with hydrophilic ones in directing molecular aggregation from an antiparallel to a parallel stacking. This different molecular packing of the amphiphilic, NIP-3TAmphi, and lipophilic, NIP-3TLipo, systems is assessed by electronic spectroscopies, scanning electronic microscopy and DFT quantum-chemical calculations...
February 22, 2017: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/28230178/large-area-growth-of-multi-layer-hexagonal-boron-nitride-on-polished-cobalt-foils-by-plasma-assisted-molecular-beam-epitaxy
#5
Zhongguang Xu, Hao Tian, Alireza Khanaki, Renjing Zheng, Mohammad Suja, Jianlin Liu
Two-dimensional (2D) hexagonal boron nitride (h-BN), which has a similar honeycomb lattice structure to graphene, is promising as a dielectric material for a wide variety of potential applications based on 2D materials. Synthesis of high-quality, large-size and single-crystalline h-BN domains is of vital importance for fundamental research as well as practical applications. In this work, we report the growth of h-BN films on mechanically polished cobalt (Co) foils using plasma-assisted molecular beam epitaxy...
February 23, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28229199/-coronary-artery-disease-interventional-and-operative-therapeutic-options-after-cardiac-arrest
#6
M Behnes, K Mashayekhi, M Borggrefe, I Akin
Coronary artery disease (CAD) represents a common structural cause for developing cardiac arrest in older patients, whereas in young adults cardiac arrest is more often caused by cardiomyopathies and cardiac channelopathies. A structural heart disease is known in almost 50% of patients prior to cardiac arrest. The present review outlines current interventional and operative therapeutic options for patients surviving cardiac arrest. The focus is on associations between epidemiological data on the incidence of malignant arrhythmias causing cardiac arrest depending on the presence or absence of CAD...
February 22, 2017: Herz
https://www.readbyqxmd.com/read/28227970/combining-a-hybrid-robotic-system-with-a-bain-machine-interface-for-the-rehabilitation-of-reaching-movements-a-case-study-with-a-stroke-patient
#7
F Resquin, J Ibanez, J Gonzalez-Vargas, F Brunetti, I Dimbwadyo, S Alves, L Carrasco, L Torres, Jose Luis Pons, F Resquin, J Ibañez, J Gonzalez-Vargas, F Brunetti, I Dimbwadyo, S Alves, L Carrasco, L Torres, Jose Luis Pons, S Alves, Jose Luis Pons, F Brunetti, J Gonzalez-Vargas, F Resquin, I Dimbwadyo, L Carrasco, L Torres, J Ibanez
Reaching and grasping are two of the most affected functions after stroke. Hybrid rehabilitation systems combining Functional Electrical Stimulation with Robotic devices have been proposed in the literature to improve rehabilitation outcomes. In this work, we present the combined use of a hybrid robotic system with an EEG-based Brain-Machine Interface to detect the user's movement intentions to trigger the assistance. The platform has been tested in a single session with a stroke patient. The results show how the patient could successfully interact with the BMI and command the assistance of the hybrid system with low latencies...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28227945/an-adaptive-and-robust-online-method-to-predict-gait-events
#8
Stefan O Schrade, Yvonne Bader, Michael R Tucker, Camila Shirota, Roger Gassert, Stefan O Schrade, Yvonne Bader, Michael R Tucker, Camila Shirota, Roger Gassert, Camila Shirota, Stefan O Schrade, Roger Gassert, Yvonne Bader, Michael R Tucker
Accurate timing of interventions during the gait cycle are critical for optimal efficacy of assistive devices, e.g., to reduce the metabolic cost of walking. However, timing control generally relies on methods that can neither account for changes in the stride duration over time due to different walking speeds, nor reject isolated abnormal strides, which could be caused by stumbling or obstacle avoidance for example. In order to address these issues, a method, named the Gait Phase Estimator (GPE), is proposed to predict temporal gait events and stride duration...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28227845/high-performance-wearable-two-channel-hybrid-bci-system-with-eye-closure-assist
#9
Yubing Jiang, Hyeonseok Lee, Gang Li, Wan-Young Chung, Yubing Jiang, Hyeonseok Lee, Gang Li, Wan-Young Chung, Wan-Young Chung, Gang Li, Hyeonseok Lee, Yubing Jiang
Generally, eye closure (EC) and eye opening (EO)-based alpha blocking has widely recognized advantages, such as being easy to use, requiring little user training, while motor imagery (MI) is difficult for some users to have concrete feelings. This study presents a hybrid brain-computer interface (BCI) combining MI and EC strategies - such an approach aims to overcome some disadvantages of MI-based BCI, improve the performance and universality of the BCI. The EC/EO is employed to control the machine to switch in different states including forward, stop, changing direction motions, while the MI is used to control the machine to turn left or right for 90° by imagining the hands grasp motions when the system is switched into "changing direction" state...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28227823/smartphone-based-swallowing-monitoring-and-feedback-device-for-mealtime-assistance-in-nursing-homes
#10
Naomi Kuramoto, Dushyantha Jayatilake, Kikue Hidaka, Kenji Suzuki, Naomi Kuramoto, Dushyantha Jayatilake, Kikue Hidaka, Kenji Suzuki, Kenji Suzuki, Kikue Hidaka, Dushyantha Jayatilake, Naomi Kuramoto
As many of the elderly are prone to dysphagia, preventing aspirations during mealtime assistance is a huge concern, especially for institutions operated with limited staff. Two of the main course of actions that are taken usually to prevent aspiration are the altering of bolus consistency and altering of the swallowing posture. To assist prevention of pneumonia, we have been developing a smartphone-based wearable technology that can evaluate swallowing ability in real-time. In this paper we will introduce modified version of Swallwoscope adding a posture detection system and a remote swallowing activity visualisation system to our previous work...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28227820/evaluating-respiratory-muscle-activity-using-a-wireless-sensor-platform
#11
Luis Estrada, Abel Torres, Leonardo Sarlabous, Raimon Jane, Luis Estrada, Abel Torres, Leonardo Sarlabous, Raimon Jane, Raimon Jane, Luis Estrada, Leonardo Sarlabous, Abel Torres
Wireless sensors are an emerging technology that allows to assist physicians in the monitoring of patients health status. This approach can be used for the non-invasive recording of the electrical respiratory muscle activity of the diaphragm (EMGdi). In this work, we acquired the EMGdi signal of a healthy subject performing an inspiratory load test. To this end, the EMGdi activity was captured from a single channel of electromyography using a wireless platform which was compared with the EMGdi and the inspiratory mouth pressure (Pmouth) recorded with a conventional lab equipment...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28227807/ecog-data-analyses-to-inform-closed-loop-bci-experiments-for-speech-based-prosthetic-applications
#12
Tejaswy Pailla, Werner Jiang, Benjamin Dichter, Edward F Chang, Vikash Gilja, Tejaswy Pailla, Werner Jiang, Benjamin Dichter, Edward F Chang, Vikash Gilja, Vikash Gilja, Werner Jiang, Tejaswy Pailla, Benjamin Dichter, Edward F Chang
Brain Computer Interfaces (BCIs) assist individuals with motor disabilities by enabling them to control prosthetic devices with their neural activity. Performance of closed-loop BCI systems can be improved by using design strategies that leverage structured and task-relevant neural activity. We use data from high density electrocorticography (ECoG) grids implanted in three subjects to study sensory-motor activity during an instructed speech task in which the subjects vocalized three cardinal vowel phonemes...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28227735/tracking-driver-s-heart-rate-by-continuous-wave-doppler-radar
#13
Kwang Jin Lee, Chanki Park, Boreom Lee, Kwang Jin Lee, Chanki Park, Boreom Lee, Chanki Park, Kwang Jin Lee, Boreom Lee
Developing driving safety system with medical assistance devices for preventing accidents has become a major social issue in recent year. These devices have been developed using electrocardiogram (ECG) and photoplethysmogram (PPG) for measuring the heart rate (HR). However, driver should directly contact with the sensor for monitoring the HR. Recently, non-contact system based on continuous-wave Doppler radar has widely studied for monitoring HR. The periodogram by Fast Fourier Transform (FFT) was used for estimating HR...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28227718/a-home-automation-based-environmental-sound-alert-for-people-experiencing-hearing-loss
#14
Matthias Mielke, Rainer Bruck, Matthias Mielke, Rainer Bruck, Rainer Bruck, Matthias Mielke
Different assistive technologies are available for deaf people (i.e. deaf, deafened, and hard of hearing). Besides the well-known hearing aid, devices for detection of sound events that occur at home or at work (e.g. doorbell, telephone) are available. Despite the technological progress in the last years and resulting new possibilities, the basic functions and concepts of such devices have not changed. The user still needs special assistive technology that is bound to the home or work environment. In this contribution a new concept for awareness of events in buildings is presented...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28227717/audis-wear-a-smartwatch-based-assistive-device-for-ubiquitous-awareness-of-environmental-sounds
#15
Matthias Mielke, Rainer Bruck, Matthias Mielke, Rainer Bruck, Rainer Bruck, Matthias Mielke
A multitude of assistive devices is available for deaf people (i.e. deaf, deafened, and hard of hearing). Besides hearing and communication aids, devices to access environmental sounds are available commercially. But the devices have two major drawbacks: 1. they are targeted at indoor environments (e.g. home or work), and 2. only specific events are supported (e.g. the doorbell or telephone). Recent research shows that important sounds can occur in all contexts and that the interests in sounds are diverse. These drawbacks can be tackled by using modern information and communication technology that enables the development of new and improved assistive devices...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28227672/robot-assisted-microsurgical-forceps-with-haptic-feedback-for-transoral-laser-microsurgery
#16
Nikhil Deshpande, Manish Chauhan, Claudio Pacchierotti, Domenico Prattichizzo, Darwin G Caldwell, Leonardo S Mattos, Nikhil Deshpande, Manish Chauhan, Claudio Pacchierotti, Domenico Prattichizzo, Darwin G Caldwell, Leonardo S Mattos, Darwin G Caldwell, Leonardo S Mattos, Nikhil Deshpande, Domenico Prattichizzo, Manish Chauhan, Claudio Pacchierotti
In this paper, a novel, motorized, multi-degrees-of-freedom (DoF), microsurgical forceps tool is presented, which is based on a master-slave teleoperation architecture. The slave device is a 7-DoF manipulator with: (i) 6-DoF positioning and orientation, (ii) 1 open/close gripper DoF; and (iii) an integrated force/torque sensor for tissue grip-force measurement. The master device is a 7-DoF haptic interface which teleoperates the slave device, and provides haptic feedback in its gripper interface. The combination of the device and the surgeon interface replaces the manual, hand-held device providing easy-to-use and ergonomic tissue control, simplifying the surgical tasks...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28227644/evaluation-of-a-wrist-orthosis-on-lofstrand-crutch-assisted-gait
#17
Deen Farooq, Omid Jahanian, Brooke A Slavens, Elizabeth T Hsiao-Wecksler, Deen Farooq, Omid Jahanian, Brooke A Slavens, Elizabeth T Hsiao-Wecksler
Lofstrand, or forearm, crutches are a common assistive mobility device for those with functional impairments. However, repeated loading of the wrist and palmar region and continual hyperextension of the wrist during Lofstrand crutch usage may cause wrist strain, pain, and secondary injuries such as carpal tunnel syndrome. In order to reduce risk of injury, a novel wrist orthosis was developed with the intent of improving wrist posture and reducing/redirecting palmar loads from the carpal tunnel region to the adductor pollicis area...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28227642/building-blocks-system-for-a-prosthesis-training-of-a-child-with-congenital-amputee
#18
Tomoya Shimokakimoto, Tomoyuki Ueno, Nanao Akimichi, Kenji Suzuki, Tomoya Shimokakimoto, Tomoyuki Ueno, Nanao Akimichi, Kenji Suzuki, Kenji Suzuki, Tomoya Shimokakimoto, Tomoyuki Ueno, Nanao Akimichi
Our objective is to provide a novel habilitation experience using play to children with special needs, in particular to those with congenital defects of the upper limbs. Our concept is a device-assisted motivational training session using tangible building block devices. In order to verify the feasibility of our concept with used bioToys in a clinical training session with occupational therapists. Our participant was a one-year-old girl with congenital amputation of the right upper limb. We verified that bioToys could be used in clinical training for a prosthesis, and could assist with both playful training and quantitative therapeutic evaluation...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28227557/sudden-changes-in-walking-surface-compliance-evoke-contralateral-emg-in-a-hemiparetic-walker-a-case-study-of-inter-leg-coordination-after-neurological-injury
#19
Jeffrey Skidmore, Panagiotis Artemiadis, Jeffrey Skidmore, Panagiotis Artemiadis, Jeffrey Skidmore, Panagiotis Artemiadis
Gait impairment due to neurological disorders is a significant problem around the world. Despite the growing interest in using robotic devices for gait rehabilitation, their widespread use remains limited as there is no clear evidence that robot-assisted gait therapy is superior to traditional treadmill-based therapy. This work is a case study that focuses on investigating the existence of mechanisms of inter-leg coordination after neurological injury, and based on that, proposing novel methods for gait rehabilitation...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28227545/corticomuscular-coherence-variation-throughout-the-gait-cycle-during-overground-walking-and-ramp-ascent-a-preliminary-investigation
#20
Anna T Winslow, Justin Brantley, Fangshi Zhu, Jose L Contreras Vidal, He Huang, Anna T Winslow, Justin Brantley, Fangshi Zhu, Jose L Contreras Vidal, He Huang, Fangshi Zhu, Justin Brantley, Jose L Contreras Vidal, He Huang, Anna T Winslow
Recent designs of neural-machine interfaces (NMIs) incorporating electroencephalography (EEG) or electromyography (EMG) have been used in lower limb assistive devices. While the results of previous studies have shown promise, a NMI which takes advantage of early movement-related EEG activity preceding movement onset, as well as the improved signal-to-noise ratio of EMG, could prove to be more accurate and responsive than current NMI designs based solely on EEG or EMG. Previous studies have demonstrated that the activity of the sensorimotor cortex is coupled to the firing rate of motor units in lower limb muscles during voluntary contraction...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
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