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Paulick Peyton Elizabeth PE Department of Biomedical Engineering, University of California, Irvine, Irvine, CA, USA, - - 2014
The direct hearing device (DHD) is a new auditory prosthesis that combines conventional hearing aid and middle ear implant technologies into a single device. The DHD is located deep in the ear canal and recreates sounds with mechanical movements of the tympanic membrane. A critical component of the DHD is ...
De Groote A - - 2014
A broadband superluminescent III-V-on-silicon light-emitting diode (LED) was realized. To achieve the large bandwidth, quantum well intermixing and multiple die bonding of InP on a silicon photonic waveguide circuit were combined for the first time, to the best of our knowledge. The device consists of four sections with different bandgaps, ...
Shi Zheng - - 2014
This Letter describes a double-sided process to fabricate freestanding membrane devices on a GaN-on-silicon platform. The photoluminescence measurement is taken to characterize the optical performance. A large portion of the excited light from InGaN/GaN multiple quantum wells is trapped as waveguide modes and propagates in different directions. Experimental results show ...
Peters Jeroen P M JP Department of Otorhinolaryngology-Head and Neck Surgery, University Medical Center Utrecht, Utrecht, The Netherlands; Brain Center Rudolf Magnus , University Medical Center Utrecht, Utrecht, The - - 2014
Systematically review the literature on the clinical outcome of bone conduction devices (BCD) and contralateral routing of sound systems (CROSS) for patients with single-sided deafness (SSD). PubMed, Embase, Cochrane Library, and CINAHL databases were searched up to April 7, 2014. All studies investigating BCD and CROSS for patients with SSD ...
Lai Boya B State Key Laboratory of Optoelectronic Materials and Technology, Sun Yat-Sen University, Guangzhou, 510275, People's Republic of - - 2014
A green-light-emitting diode device was fabricated based on a p-type Sb-doped ZnO segments/Cd-alloyed ZnO/n-type ZnO film/heteronanowires array structure. The structures and chemical components of the heteronanowire sample were studied by energy dispersive spectrometer, x-ray photoelectron spectrometer, etc, from which the statuses of Cd and Sb in the sample were confirmed. ...
Mehta Jay P JP Integrated Systems Engineering, The Ohio State University, Columbus, OH, - - 2014
The physical demands on firefighting personnel were investigated when using different types of track-type stair descent devices designed for the emergency evacuation of high rise buildings as a function of staircase width and evacuation urgency. Twelve firefighters used five track-type stair descent devices during simulated urgent and non-urgent evacuations. The ...
Smit Gerwin - - 2014
Rejection rates of upper limb prostheses are high (23-45%). Amputees indicate that the highest design priority should be reduction of the mass of the prosthetic device. Despite all efforts, the mass of the new prosthetic hands is 35-73% higher than that of older hands. Furthermore current hands are thicker than ...
Tan Zhi-Kuang ZK Cavendish Laboratory, University of Cambridge, JJ Thomson Avenue, Cambridge CB3 0HE, - - 2014
Solid-state light-emitting devices based on direct-bandgap semiconductors have, over the past two decades, been utilized as energy-efficient sources of lighting. However, fabrication of these devices typically relies on expensive high-temperature and high-vacuum processes, rendering them uneconomical for use in large-area displays. Here, we report high-brightness light-emitting diodes based on solution-processed ...
Lindh E Mattias EM The Organic Photonics and Electronics Group, Department of Physics, Umeå University, Linnaeus väg 24, SE-90187, Umeå, - - 2014
A new bilayer light-emitting electrochemical cell (LEC) device, which allows well-defined patterned light emission through an easily adjustable, mask-free, and additive fabrication process, is reported. The bilayer stack comprises an inkjet-printed lattice of micrometer-sized electrolyte droplets, in a "filled" or "patterned" lattice configuration. On top of this, a thin layer ...
Tao You-Rong YR Country Key Laboratory of Mesoscopic Chemistry of MOE, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210093, - - 2014
Two new flexible visible-light photodetectors based on ZrS3 nanobelts films are fabricated on a polypropylene (PP) film and printing paper, respectively, by an adhesive-tape transfer method, and their light-induced electric properties are investigated in detail. The devices demonstrate a remarkable response to 405 to 780 nm light, a photocurrent that ...
Gurari Netta N Robotics, Brain and Cognitive Sciences, Istituto Italiano di Tecnologia, Via Morego, 30, Genova 16163, Italy. Electronic address: - - 2014
The emergence of commercial haptic devices offers new research opportunities to enhance our understanding of the human sensory-motor system. Yet, commercial device capabilities have limitations which need to be addressed. This paper describes the customization of a commercial force feedback device for displaying forces with a precision that exceeds the ...
D'Alonzo Marco - - 2014
Tactile feedback is essential to intuitive control and to promote the sense of self-attribution of a prosthetic limb. Recent findings showed that amputees can be tricked to experience this embodiment, when synchronous and modality-matched stimuli are delivered to biological afferent structures and to an alien rubber hand. Hence it was ...
Shao Dali D Department of Electrical, Computer, and Systems Engineering and ‡Department of Mechanical, Aerospace and Nuclear Engineering, Rensselaer Polytechnic Institute , Troy, New York 12180, United - - 2014
An ultraviolet (UV) photodetector is fabricated by sandwiching a nanocomposite active layer between charge-selective semiconducting polymers. The nanocomposite active layer composed of TiO2 nanoparticles (NPs) blended with 1,3-bis(N-carbazolyl)benzene (mCP), which acts as a "valve" controller that enables hole injection into the device upon UV illumination. The UV photodetector demonstrated a ...
Chou Chun-Hsien CH Department of Photonics and Institute of Electro-Optical Engineering, National Chiao Tung University, Hsinchu 30010, - - 2014
Over the past decade, we have witnessed rapid advances in the development of organic photovoltaic devices (OPVs). At present, the highest level of efficiency has surpassed 10%, suggesting that OPVs have great potential to become competitive with other thin-film solar technologies. Because plasmonic nanostructures are likely to further improve the ...
Cheng Li-Chung LC Department of Photonics, National Cheng Kung University, Tainan 701, - - 2014
In this study, the light diffraction of temporal focusing multiphoton excitation microscopy (TFMPEM) and the excitation patterning of nonlinear structured-illumination microscopy (NSIM) can be simultaneously and accurately implemented via a single high-resolution digital micromirror device. The lateral and axial spatial resolutions of the TFMPEM are remarkably improved through the second-order ...
Gotostos Mary Jane N MJ a Department of Chemical Engineering , University of the Philippines , Diliman , Quezon City , - - 2014
In this work, a novel photocatalyst K3[Fe(CN)6]/TiO2 synthesized via a simple sol-gel method was utilized to degrade acetaminophen (ACT) under visible light with the use of blue and green LED lights. Parameters (medium pH, initial concentration of reactant, catalyst concentration, temperature, and number of blue LED lights) affecting photocatalytic degradation ...
Chen Hui H College of Chemistry and Molecular Engineering, International Phosphorus Laboratory, Joint Research Laboratory for Functional Organophosphorus, Materials of Henan Province, Zhengzhou University, Zhengzhou 450001 (P. R. - - 2014
The discovery and molecular engineering of novel electroluminescent materials is still a challenge in optoelectronics. In this work, the development of new π-conjugated oligomers incorporating a dihydrophosphete skeleton is reported. Variation of the substitution pattern of 1,2-dihydrophosphete derivatives and chemical modification of their P atoms afford thermally stable derivatives, which are ...
Lozano G G Center for Nanophotonics, FOM Institute AMOLF. c/o Philips Research, High-Tech Campus 4, 5656 AE, Eindhoven, The - - 2014
We demonstrate an enhanced and tailor-made directional emission of light-emitting devices using nanoimprinted hexagonal arrays of aluminum nanoparticles. Fourier microscopy reveals that the luminescence of the device is not only determined by the material properties of the organic dye molecules but is also strongly influenced by the coherent scattering resulting ...
Imai Ryota R Department of Neurorehabilitation, Graduate School of Health Sciences, Kio University, Japan ; Department of Rehabilitation, Kawachi General Hospital, - - 2014
[Purpose] A number of different stimulation devices are used in basic and clinical research studies, and their frequencies of use vary. However, whether or not they are equally effective has not been investigated. The purpose of the present study was to investigate neural activity in the brain during the illusion ...
Lee Hyungjin H Department of Energy Systems Engineering, Daegu Gyeongbuk Institute of Science and Technology (DGIST), 50-1 Sang-Ri, Hyeonpung-Myeon, Dalseong-Gun, Daegu, 711-873, Korea. - - 2014
Highly flexible and efficient silver nanowire-based organic light-emitting diodes (OLEDs) have been successfully fabricated by employing a n-type hole injection layer (HIL). The silver nanowire-based OLEDs without light outcoupling structures exhibited excellent device characteristics such as extremely low turn-on voltage (3.6 V) and high current and power efficiencies (44.5 cd ...
Udagawa Kazuo K Research Center for Organic Electronics (ROEL), Yamagata University, 4-3-16 Jonan, Yonezawa, Yamagata, 992-8510, - - 2014
A homoleptic iridium (iii) tris(pheny-limidazolinate) complex realizes a high EQE of 30%, low turn-on voltage of 2.5 V, and small efficiency roll-off in a blue organic light-emitting device (OLED). This device also shows high power efficiency over 75 lm W(-1) and ideal light distribution pattern at 100 cd m(-2) .
De Asha Alan R AR Division of Medical Engineering, School of Engineering, University of Bradford, Bradford BD7 1DP, - - 2014
If a prosthetic foot creates resistance to forwards shank rotation as it deforms during loading, it will exert a braking effect on centre of mass progression. The present study determines whether the centre of mass braking effect exerted by an amputee's habitual rigid 'ankle' foot was reduced when they switched ...
Mayrhofer Ralf R Department of Psychology, University of Göttingen, Germany. Electronic address: - - 2014
The question how agent and patient roles are assigned to causal participants has largely been neglected in the psychological literature on force dynamics. Inspired by the linguistic theory of Dowty (1991), we propose that agency attributions are based on a prototype concept of human intervention. We predicted that the number ...
Mabrouk O S OS Neurolytical LLC, Ann Arbor, Michigan, National Institute on Drug Abuse and National Institute on Alcohol Abuse and Alcoholism, Bethesda, MD; Department of Pharmacology, National Institute on Drug Abuse and National Institute on Alcohol Abuse and Alcoholism, Bethesda, MD; Department of Chemistry, University of Michigan, Ann Arbor, Michigan, National Institute on Drug Abuse and National Institute on Alcohol Abuse and Alcoholism, Bethesda, - - 2014
Monitoring mouse behavior is a critical step in the development of modern pharmacotherapies. New METHOD: Here we describe the application of a novel method that utilizes a touch display computer (tablet) and software to detect, record, and report fine motor behaviors. A consumer-grade tablet device is placed in the bottom ...
Loranger Sébastien - - 2014
Fabry-Perot resonators or interferometers (FPI) have existed for a long time and act as light accumulators. However, their applications have been limited to the allowed resonance modes in the cavity, which are defined by the specific free-spectral range of the FPI. We show here a novel concept involving a light ...
Amako J - - 2014
We report on a light-dispersing device consisting of two transmission gratings and a waveplate. The gratings separate two orthogonal polarization components of light incident at the Bragg angle. The waveplate, which is sandwiched between the gratings, functions as a polarization converter for oblique light incidence. With these optical parts suitably ...
Muhieddine Khalid K The Centre for Organic Photonics & Electronics, School of Mathematics and Physics and School of Chemistry and Molecular Biosciences, The University of Queensland, Brisbane, Queensland, Australia, - - 2014
All solution-processed, high performance hybrid light emitting transistors (HLETs) are realized. Using a novel combination of device architecture and materials a bilayer device comprised of an inorganic and organic semiconducting layer is fabricated and the optoelectronic properties are presented.
Höfle Stefan S Light Technology Institute, Karlsruhe Institute of Technology (KIT), Engesserstrasse 13, 76131, Karlsruhe, - - 2014
Fully solution processed monochromatic and white-light emitting tandem or multi-photon polymer OLEDs with an inverted device architecture have been realized by employing WO3 /PEDOT:PSS/ZnO/PEI charge carrier generation layers. The luminance of the sub-OLEDs adds up in the stacked device indicating multi-photon emission. The white OLEDs exhibit a CRI of 75.
Ye Jun J Center of Super-Diamond and Advanced Films (COSDAF) and Department of Physics and Materials Sciences, City University of Hong Kong , Tat Chee Avenue, Hong Kong SAR, P. R. - - 2014
Achieving high efficiencies in simple device configurations is a long-standing and meaningful target for organic light-emitting devices (OLEDs). Herein, by utilizing an efficient blue-violet fluorophor (CzS1) that has a high triplet energy of 2.62 eV, the significance of effective confinement of the green triplets in fluorescence/phosphorescence hybrid white devices (F/P-WOLEDs) ...
Hawi Nael N Trauma Department, Hannover Medical School (MHH), Hannover, - - 2014
Motion sensing input devices could provide a practical and low-cost alternative method for repeated range of motion measurements. This study aimed to assess the reliability, accuracy and time requirements of a motion sensing input device (Microsoft Kinect) for ROM measurements comparing it with goniometer based measurements and subjective estimation. Full ...
Arahira Shin - - 2014
In this paper, we reveal that some kinds of optical nonlinearities are further enhanced when incoherent light, instead of a laser, is used as a pump light. This idea was confirmed both theoretically and experimentally in the case of sum-frequency generation (SFG) using the optical second nonlinearity. The conversion efficiency ...
Spangenberg Dirk-Mathys - - 2014
Spatial light modulators are ubiquitous tools for wavefront control and laser beam shaping but have traditionally been used with monochromatic sources due to the inherent wavelength dependence of the calibration process and subsequent phase manipulation. In this work we show that such devices can also be used to shape broadband ...
Shamaei Kamran - - 2014
In this study, we describe the mechanical design and control scheme of a quasi-passive knee exoskeleton intended to investigate the biomechanical behavior of the knee joint during interaction with externally applied impedances. As the human knee behaves much like a linear spring during the stance phase of normal walking gait, ...
Barlas Stephen - - 2014
FDA starts light-touch inspections for some imports.
Greenhalgh A A London Sport Institute, Middlesex University, United Kingdom. Electronic address: - - 2014
The examination of synchronous three dimensional (3-D) kinetics and kinematics of walking in laboratory based analyses typically requires participants/patients to make foot contact with a force or pressure measuring device. However, it has been proposed that this may lead to targeting whereby participants modify their natural gait pattern in order ...
Roudsari Anita Fadavi - - 2014
We propose a new nanowire based, junction-less phototransistor, that consists of a channel with both wide and narrow regions to ensure efficient light absorption and low dark current, respectively. While the light is absorbed in the wide region, the narrow region allows for ease of band engineering. We also find ...
Searl Jeff J Department of Hearing and Speech, University of Kansas Medical Center, Kansas City, Kansas. Electronic address: - - 2014
To elucidate capabilities and limitations of the VocaLog, a device marketed to log-calibrated dB sound pressure level (SPL). The study design varied depending on the experiment. All were prospective. Some were case series, and others were cohort studies without controls. Experiments were conducted to determine (1) whether the VocaLog logged ...
Ni Pei-Nan - - 2014
By taking semiconductors with different band-gap energies as the active layers and controlling the electron-hole recombination region through the electric field, bias-polarity dependent ultraviolet/visible switchable light-emitting devices have been realized in Au/MgO/Mg0.49Zn0.51O/MgxZn1-xO/n-ZnO structures, of which the emission bands can be switched from ultraviolet region to orange region by changing the ...
Gao Xianfeng X Department of Mechanical Engineering, University of Wisconsin Milwaukee, Wisconsin 53211, USA. - - 2014
Freestanding TiO2 nanotube array films are fabricated and first applied as electrodes in perovskite CH3NH3PbI3 sensitized solar cells. The device demonstrates improved light absorption with more than 90% of light absorbed in the whole visible range and a reduced charge recombination rate, leading to a significant improvement of the photocurrent ...
Nguyen Huu Tuan HT Department of Energy Systems Research, Ajou University , Suwon, Gyeonggi-do 443-749, Republic of - - 2014
We fabricated hybrid light emitting devices based on colloidal CdSe/ZnS core/shell quantum dots and a solution-processed NiO layer. The use of a sol-gel NiO layer as a hole injection layer (HIL) resulted in overall improvement in device operation compared to a control device with a more conventional poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) HIL. In ...
Zhang Yanfei - - 2014
Doped single-layer polymer OLEDs consisting of PVK: (TPB, C545T, Rubrene or DCJTB) were prepared. By applying high-frequency electric pulse of 0.5 micros pulse width to each device, we observed various delayed electroluminescence after withdrawing the forward bias. The order of magnitude of fitting life time ranges from hundreds of nanoseconds ...
He Li - - 2014
The helicity of circularly polarized (CP) light plays an important role in the light-matter interaction in magnetic and quantum material systems. Exploiting CP light in integrated photonic circuits could lead to on-chip integration of novel optical helicity-dependent devices for applications ranging from spintronics to quantum optics. In this Letter, we ...
Murtagh Ryan R University of South Florida, 2700 University Square Drive, Tampa, FL 33612, USA. Electronic address: - - 2014
The primary goal of motion preservation surgery in the spine is to maintain normal or near normal motion in an attempt to prevent adverse outcomes commonly seen with conventional spinal fusion, most notably the development of adjacent-level degenerative disc disease. Several different surgical approaches have been developed to preserve motion ...
Stock Armin A University of - - 2014
In the fall and winter of 1910, Max Wertheimer (1880-1943) performed his famous experiments on perceived motion, published in 1912. Besides slider experiments he mainly used a wheel tachistoscope developed by Friedrich Schumann (1863-1940) at the end of the 19th century. The Adolf-Wuerth-Center for the History of Psychology has several ...
Cheneler D - - 2014
Organic light-emitting diodes (OLEDs) are used almost exclusively for display purposes. Even when implemented as a sensing component, it is rarely in a manner that exploits the possible compliance of the OLED. Here it is shown that OLEDs can be integrated into compliant mechanical micro-devices making a new range of ...
Wu Lyndia - - 2014
Injury from blunt head impacts causes acute neurological deficits and may lead to chronic neurodegeneration. A head impact detection device can serve both as a research tool for studying head injury mechanisms and a clinical tool for real-time trauma screening. The simplest approach is an acceleration thresholding algorithm, which may ...
Balaram Ajay K AK *Department of Orthopaedic Surgery and Rehabilitation, Loyola University Medical Center, Maywood, Illinois. †Musculoskeletal Biomechanics Laboratory, Department of Veterans Affairs, Edward Hines Jr. VA Hospital, Hines, Illinois. ‡Synthes Spine, West Chester, - - 2014
Study Design. In vitro Biomechanical Study.Objective. To test the hypotheses: (1) an anchored-spacer device would decrease motion similarly to a plate-spacer construct, and (2) the anchored-spacer would achieve a similar reduction in motion when placed adjacent to a previously fused segment.Summary of Background Data. An anchored-spacer device has been shown ...
Karimov Jamshid H JH Department of Biomedical Engineering, Lerner Research Institute, Cleveland Clinic, Cleveland, OH, - - 2014
We designed a device that applies motion-activated energy (vibration) to prevent chest-tube clogging and maintain tube patency. We evaluated the efficacy of this device in vitro and in vivo. The motion-activated system (MAS) device assembly comprises a direct current motor with an eccentric mass (3.2 g, centroid radius of 4.53 ...
Pfeiffer Carl - - 2014
Metamaterial Huygens' surfaces manipulate electromagnetic wavefronts without reflection. A broadband Huygens' surface that efficiently refracts normally incident light at the telecommunication wavelength of 1.5 µm is reported. The electric and magnetic responses of the surface are independently controlled by cascading three patterned, metallic sheets with a subwavelength overall thickness of ...
Norman Sumner L - - 2014
In this paper, we show that a simple haptic device can accurately guide users through planar hand movements. The device guides the user through skin stretch feedback on the fingerpad of the user's index finger. In an angle matching test evaluating two types of stimuli, users are able to discriminate ...
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