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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 ...
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 ...
Basch Corey H CH William Paterson University, , Wayne, New Jersey, - - 2014
Use of mobile devices has been cited as a distraction while driving, and more recently, among pedestrians crossing urban streets. In 2010, over half of New York City traffic fatalities were pedestrians. The aim of this study was to estimate the prevalence of distracted walking due to pedestrians' use of ...
Shimada Toshikazu - - 2014
We present the modeling and the experiment on the lateral integration of a vertical-cavity surface-emitting laser (VCSEL) and slow light Bragg reflector waveguide devices. The modeling shows an efficient direct-lateral coupling from a VCSEL to an integrated slow light waveguide. The calculated result shows a possibility of 13 dB chip gain ...
Ying Lei L Institute of Polymer Optoelectronic Materials and Devices, State Key Laboratory of Luminescent Materials and Devices, South China University of Technology, Guangzhou, 510640, P. R. - - 2014
White polymer light-emitting devices (WPLEDs) have become a field of immense interest in both scientific and industrial communities. They have unique advantages such as low cost, light weight, ease of device fabrication, and large area manufacturing. Applications of WPLEDs for solid-state lighting are of special interest because about 20% of ...
Chuanasa Jakkrapun J Department of Mechanical Engineering, King Mongkut's University of Technology Thonburi, Bangkok, - - 2014
Background:There are many associated devices using impedance method. However, they cannot completely suppress tremor. Other methods using active vibration control have been a challenging problem for industrial and academic researchers. Potential applications of the latter for tremor patients are still not realized.Objectives:This article presents a novel method for suppressing human ...
Jeong Intae - - 2014
Heavily-doped strained germanium (Ge) can emit light efficiently thanks to its pseudo direct band gap characteristic. This makes Ge a good candidate for on-chip monolithic light sources in silicon (Si) photonics systems. We propose fin-shaped Ge-Si heterojunction light-emitting diode (LED) with metal gates, which can enhance light emission by coupling ...
Luo Lin-Bao LB School of Electronic Science and Applied Physics and Anhui Provincial Key Laboratory of Advanced Functional Materials and Devices, Hefei University of Technology, Hefei, Anhui, 230009, P. R. - - 2014
In this work, we propose a simple strategy to improve the device performance of photodetector by modifying plasmonic nanoparticles onto the surface of semiconductors nanostructure. Both experimental analysis and theoretical simulation show that the plasmonic metal nanoparticles (AuNPs) exhibits obvious localized surface plasmon resonance (LSPR) which can trap incident light ...
Niesen Bjoern - - 2014
Light-emitting devices that utilize thin films of metal nanoclusters as quantum emitters are presented. Implementing Ag as well as Au nanoclusters, the versatility of the approach is demonstrated, and it is shown that the electroluminescence measured from these devices is tunable by the choice of nanocluster. Ultimately, it is demonstrated ...
Syms Mark J MJ Neurotology, Barrow Neurological Institute, Phoenix, Arizona, - - 2014
To obtain identical laboratory measures of 8 (surgical and nonsurgical) bone conduction devices and relate them to clinical function. Each device was measured with a single laboratory system and characterized with descriptive statistics. Laboratory. Seven surgical devices (Intenso, BP110, BP100, and Cordelle [Cochlear, Denver, Colorado]; Ponto Pro and Ponto Pro ...
Park Yong-Jai YJ BioRobotics Laboratory, Department of Mechanical Engineering, Sunmoon University, 70 Sunmoon-ro, Tangjeong-myeon, Asan, Chungnam, 336-708, - - 2014
Compliance can increase the thrust generated by the fin of a bio-inspired underwater vehicle. To improve the performance of a compliant fin, the compliance should change with the operating conditions; a fin should become stiffer as the oscillating frequency increases. This paper presents a novel variable-stiffness flapping (VaSF) mechanism that ...
Mackenzie Bonnie B From the Departments of *Emergency Medicine and †Pediatrics, Alpert Medical School of Brown University, Providence, - - 2014
Alternate light sources are devices that produce visible and invisible light at specific wavelengths to allow for enhanced visualization of fluorescent substances. These devices (which include Wood's lamp and blue light) are often used in forensics for evidence collection and can be quite useful to physicians in the medical evaluation ...
Perlmutter Sam - - 2014
Trunk torque is typically quantified in a single plane. This is not ideal since any unmeasured coupled trunk kinetics in other directions, than the intended one, could affect the accuracy and reliability of the strength measurements as well as the ability to corroborate findings with electromyographic recordings. Therefore, an isometric ...
Alipour Payam - - 2014
We demonstrate a compact, thermally reconfigurable reflection suppressor on a silicon-on-insulator (SOI) platform, without reliance on nonreciprocal mechanisms. A reflection suppression ratio of 40 dB is achieved with a footprint of 105 μm in length. The insertion loss of the device is below 0.15 dB, and its total power consumption ...
Steiner Lisa - - 2014
The authors examine the pattern of direction errors made during the manipulation of a physical simulation of an underground coal mine bolting machine to assess the directional control-response compatibility relationships associated with the device and to compare these results to data obtained from a virtual simulation of a generic device. ...
Cnossen Arjen A Stratingh Institute for Chemistry, University of Groningen, Nijenborgh 4, 9747 AG, Groningen, The - - 2014
Over the last two decades, interest in nanotechnology has led to the design and synthesis of a toolbox of nanoscale versions of macroscopic devices and components. In molecular nanotechnology, linear motors based on rotaxanes and rotary motors based on overcrowded alkenes are particularly promising for performing work at the nanoscale. ...
Carey Stephanie L SL 1Department of Mechanical Engineering, University of South Florida, Tampa, FL, - - 2014
Background:Typical upper limb prostheses may limit sports participation; therefore, specialized terminal devices are often needed. The purpose of this study was to evaluate the ability of transradial amputees to play golf using a specialized terminal device.Case description and methods:Club head speed, X-factor, and elbow motion of two individuals with transradial ...
Yang Ya Y Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences , Beijing 100083, - - 2014
We report the first self-powered electronic skin that consists of light-emitting diode (LED) and triboelectric nanogenerator (TENG) arrays that can be utilized for spatially mapping applied instantaneous-touch events and tracking the movement location of the target object by recording the electroluminescent signals of the LEDs without external power sources. The ...
Xu Xuejun - - 2014
Microdisk integrated with a bus waveguide is fabricated on silicon-on-insulator substrate containing Ge self-assembled quantum dots as active medium. The device is demonstrated to be operated as both light-emitting diode and photodetector. At forward bias, carriers are injected into the microdisk and light emission at 1.45-1.6 μm is extracted through ...
Guo Pengfei P Key Laboratory for Micro-Nano Physics and Technology of Hunan Province and State Key Laboratory of Chemo/biosensing and Chemometrics (CBSC), Hunan University, Changsha, 410082, P.R. - - 2014
High-performance visible-light photodetectors are achieved based on single NR lateral heterostructures composed of two different semiconductor alloys epitaxially grown at the lateral direction. They reveal superior spectral response range, responsivity, Ion /Ioff ratio and external quantum efficiency relative to devices based on single composition structures.
Jeong Huisu H School of Materials Science and Engineering, Gwangju Institute of Science and Technology (GIST), Gwangju, 500-712, Republic of - - 2014
By combining nanoimprint lithography technique and two step lift-off process, a Si nanotube array is fabricated and applied as a light absorber for n-Si/PEDOT:PSS hybrid solar cells. The light is effectively trapped within the nanotubes and the device reveals a Jsc of 29.9 mA·cm(-2) and a power conversion efficiency of ...
Boulier T T Laboratoire Kastler Brossel, Université Pierre et Marie Curie, Ecole Normale Supérieure and CNRS, UPMC Case 74, 4 place Jussieu, 75252 Paris Cedex 05, - - 2014
The generation of squeezed and entangled light fields is a crucial ingredient for the implementation of quantum information protocols. In this context, semiconductor materials offer a strong potential for the implementation of on-chip devices operating at the quantum level. Here we demonstrate a novel source of continuous variable squeezed light ...
Kazim Samrana S Abengoa Research, C/Energía Solar n° 1, Campus Palmas Altas-41014, Sevilla - - 2014
It is not often that the scientific community is blessed with a material, which brings enormous hopes and receives special attention. When it does, it expands at a rapid pace and its every dimension creates curiosity. One such material is perovskite, which has triggered the development of new device architectures ...
Stoffregen Thomas A TA School of Kinesiology, Cooke Hall, University of Minnesota, Minneapolis, MN, 55455, USA, - - 2014
Drivers are less likely than passengers to experience motion sickness, an effect that is important for any theoretical account of motion sickness etiology. We asked whether different types of control would affect the incidence of motion sickness, and whether any such effects would be related to participants' control of their ...
Sinclair Jonathan J Division of Sport Exercise and Nutritional Sciences, University of Central Lancashire, Preston, Lancashire, - - 2014
In running analyses where both kinetic and kinematic information is recorded, participants are required to make foot contact with a force and/or pressure measuring transducer. Problems arise if participants modify their gait patterns to ensure contact with the device. There is currently a paucity of research investigating the influence of ...
Caspall Jayme J JJ Rehabilitation Engineering and Applied Research Laboratory, Department of Mechanical Engineering, and School of Applied Physiology, Georgia Institute of Technology, Atlanta, - - 2014
When executing turning maneuvers, manual wheelchair users must overcome the rotational inertia of the wheelchair system. Differences in wheelchair rotational inertia can result in increases in torque required to maneuver, resulting in greater propulsion effort and stress on the shoulder joints. The inertias of various configurations of an ultralightweight wheelchair ...
Uddin Ashraf - - 2014
Most high-performance organic photovoltaic (OPV) devices reported in the literature have been fabricated using the bulk heterojunction (BHJ) concept. Typically, the optimum thickness of the active layer for an OPV device is around 100 nm, or possibly less; such a thin layer can lead to low absorption of light. A ...
Kaufman Joely J Department of Dermatology and Cutaneous Surgery, Miller School of Medicine, University of Miami, Miami, - - 2014
Since its introduction in 2004 by Manstein et al, fractional resurfacing has revolutionized the manner in which we treat photoaging. Fractional resurfacing delivers microscopic beams of light to the skin resulting in coagulation or vaporization of fragments of the epidermis and dermis. The wavelengths of these devices may vary, yielding ...
Ostrowski David P DP Department of Chemistry and Biochemistry and the Center for Nano and Molecular Science, at The University of Texas at Austin, Welch Hall 2.204, 105 E. 24th Street, A5300, Austin, TX, 78712-1224, - - 2014
Morphological effects on photovoltaic (PV) properties are studied through scanning photocurrent (PC) and photoluminescence (PL) microscopy of a solution processed, polymer blend PV device composed of PFB [poly(9,9'-dioctylfluorene-co-bis-N,N-(4-butylphenyl)-bis-N,N-phenyl-1,4-phenylenediamine] and F8BT [poly(9,9'-dioctylfluorene-co-benzothiadiazole]. As PFB and F8BT have unique absorbance bands, it is possible to selectively excite only F8BT (488 nm) or ...
Castan Alice - - 2014
Quantum dots are a promising new candidate for the emissive material in light-emitting devices for display applications. The fabrication of such devices by solution processing allows considerable cost reduction and is therefore very attractive for industrial manufacturers. We report all solution-processed colloidal quantum-dot light-emitting diodes (QLEDs) with an inverted structure. ...
Huo Wenjuan - - 2014
Deep Ridge InGaAsP/InP Light Emitting Transistors (LET) with ~1.5μm light emissions have been fabricated and characterized. In the deep ridge LETs, all the light emissions are from the intrinsic base area, which makes them more suitable for high speed direct modulation. A collector emitter voltage (V<sub>CE</sub>) dependent output power, which ...
Kim Kyoung-Ho - - 2014
We report the fabrication of an optimized low reflective dielectric/metal-layered electrode that provides significant electrical conductivity and light transparency in the near-infrared wavelength regime. By making the metal film thickness thick enough and choosing a proper dielectric layer with a certain thickness, we show that our suggested electrode significantly reduces ...
Kumaragamage Chathura L - - 2014
Inner ear evoked potentials are small amplitude (<1 muVpk) signals that require a low noise signal acquisition protocol for successful extraction; an existing such technique is Electrocochleography (ECOG). A novel variant of ECOG called Electrovestibulography (EVestG) is currently investigated by our group, which captures vestibular responses to a whole body ...
Li Guijie G Department of Materials Science and Engineering, Arizona State University, Tempe, AZ, 85284, - - 2014
Using a single tetradentate platinum emitter dubbed Pt7O7, efficient and stable white organic light-emitting diodes are developed. The excimer-based white devices achieve an external quantum efficiency (EQE) of 24.5%, coordinates of (0.37, 0.42) based on the Commission internationale de l'éclairage (CIE) system, and a color rendering index (CRI) of 70. ...
O'Brien Ian I a Discipline of Biomedical Sciences, School of Medical Sciences , The University of Sydney , Lidcombe , NSW , 2141 , - - 2014
ABSTRACT Orchestral musicians - an at-risk group for noise-induced hearing loss - have consistently reported great difficulty using hearing protection while performing or rehearsing, even when using earplugs specifically designed for musicians. A recent innovation in this field has been electronic earplugs that claim to deliver very high quality sound ...
Tommasino P P School of Mechanical and Aerospace Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, Singapore. Electronic address: - - 2014
Motor adaptation to novel force fields is considered as a key mechanism not only for the understanding of skills learning in healthy subjects but also for rehabilitation of neurological subjects. Several studies conducted over the last two decades used active robotic manipulanda to generate force fields capable of perturbing the ...
Kokkinakis Kostas K Department of Speech-Language-Hearing: Sciences and Disorders, University of Kansas, Lawrence, Kansas 66045 kokkinak@ku.edu, - - 2014
This paper investigates to what extent users of bilateral and bimodal fittings should expect to benefit from all three different binaural advantages found to be present in normal-hearing listeners. Head-shadow and binaural squelch are advantages occurring under spatially separated speech and noise, while summation emerges when speech and noise coincide ...
Nehmé Antoine - - 2014
Objectives To investigate electrically evoked compound action potentials (eCAPs) measured with the neural response imaging (NRI) 'SmartNRI' algorithm. NRI thresholds and slopes were examined according to three aspects: (1) site along the cochlea, (2) development of responses over time, and (3) influence of age/duration of deafness. Methods Thirty-four individuals implanted ...
Zhou Lei L 1] Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Institute of Functional Nano & Soft Materials (FUNSOM), and Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou 215123, China - - 2014
Organic-based optoelectronic devices, including light-emitting diodes (OLEDs) and solar cells (OSCs) hold great promise as low-cost and large-area electro-optical devices and renewable energy sources. However, further improvement in efficiency remains a daunting challenge due to limited light extraction or absorption in conventional device architectures. Here we report a universal method ...
Schwarz Christina C Laboratorio de Óptica, Instituto Universitario de Investigación en Óptica y Nanofísica, Universidad de Murcia, Murcia, - - 2014
Correction of spherical (SA) and longitudinal chromatic aberrations (LCA) significantly improves monocular visual acuity (VA). In this work, the visual effect of SA correction in polychromatic and monochromatic light on binocular visual performance is investigated. A liquid crystal based binocular adaptive optics visual analyzer capable of operating in polychromatic light ...
Chen Jing J 1] School of Electronic Science and Engineering, Southeast University, Nanjing, China, 210096 - - 2014
White quantum dot light-emitting diodes (QD-LEDs) have been a promising candidate for high-efficiency and color-saturated displays. However, it is challenging to integrate various QD emitters into one device and also to obtain efficient blue QDs. Here, we report a simply solution-processed white QD-LED using a hybrid ZnO@TiO2 as electron injection ...
Lin Yi-Chen YC Graduate Institute of Photonics and Optoelectronics, National Taiwan University, No. 1, Sec. 4, Roosevelt Rd., Taipei 106, Taiwan. - - 2014
In this paper, a new application of an electro-active-polymer for a radio frequency (RF) switch is presented. We used an ionic polymer metallic composite (IPMC) switch to change the operating frequency of an inverted-F antenna. This switch is light in weight, small in volume, and low in cost. In addition, ...
Kurzych Anna A Institute of Applied Physics, Military University of Technology, 2 Gen. Sylwestra Kaliskiego St., 00-908 Warsaw, Poland. - - 2014
We outline the development and the application in a field test of the Autonomous Fibre-Optic Rotational Seismograph (AFORS), which utilizes the Sagnac effect for a direct measurement of the seismic-origin rotations of the ground. The main advantage of AFORS is its complete insensitivity to linear motions, as well as a ...
Black Bryan J BJ Biophysics and Physiology Group, Department of Physics, The University of Texas at Arlington, Arlington, Texas, United States of - - 2014
In vivo nerve repair requires not only the ability to regenerate damaged axons, but most importantly, the ability to guide developing or regenerating axons along paths that will result in functional connections. Furthermore, basic studies in neuroscience and neuro-electronic interface design require the ability to construct in vitro neural circuitry. ...
Begg Nikolai D M ND Massachusetts Institute of Technology, Department of Mechanical Engineering, United States. Electronic address: - - 2013
Ultrasonic vibration has been proven to help scalpels and puncture devices cut and cauterize, but creates a damaged tissue zone that may not be desirable. We have found that audible frequency vibration applied to a needle not only reduces puncture force more than ultrasonic vibration; it does not cause significant ...
Li Bowei B Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, 264003, - - 2013
This paper presents a novel paper-based analytical device based on the colorimetric paper assays through its light reflectance. The device is portable, low cost (less than 20 dollars) and lightweight (only 176 g) that is available to assess the cost-effectiveness and appropriateness of the original health care or on-site detection ...
Lee Jun Chang JC Department of Biomedical Engineering, Hanyang University, Seoul, - - 2013
In order to improve speech intelligibility for hearing-impaired people in various listening situations, it is necessary to diversify the possible focusing directions of a beamformer. In a previous report, the concept of binaural beam-steering that can focus a beamformer in diagonal directions was applied to a binaural hearing aid; however, ...
Timm Jana J Institut für Psychologie, Universität Leipzig, Germany. Electronic address: - - 2013
After adaptation to a fixed temporal delay between actions and their sensory consequences, stimuli delivered during the delay are perceived to occur prior to actions. Temporal judgments are also influenced by the sensation of agency (experience of causing our own actions and their sensory consequences). Sensory consequences of voluntary actions ...
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