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Xanthis Christos G - - 2014
MRI physics simulators have been developed in the past for optimizing imaging protocols and for training purposes. However, these simulators have only addressed motion within a limited scope. The purpose of this study was the incorporation of realistic motion, such as cardiac motion, respiratory motion and flow, within MRI simulations ...
Lee H W - - 2014
Compared with other materials, zinc oxide (ZnO) exhibits stability in air, high-electron mobility, transparency and low light sensitivity. We investigated these properties in ZnO thin-film transistors (TFTs) containing a cross-linked poly(vinyl alcohol) (C-PVA) (1:3) buffer layer stacked between the semiconductor and gate dielectric. We measured the impact of this C-PVA ...
Le Son T - - 2014
We present a newly designed polymer light-emitting diode with a bandwidth of ∼350  kHz for high-speed visible light communications. Using this new polymer light-emitting diode as a transmitter, we have achieved a record transmission speed of 10  Mb/s for a polymer light-emitting diode-based optical communication system with an orthogonal frequency division multiplexing ...
Dunlop Rebecca A RA School of Veterinary Science, University of Queensland, Gatton, Queensland 4343, - - 2014
The Lombard reflex is an increase in the subject's vocal levels in response to increased noise levels. This functions to maintain an adequate signal-to-noise ratio at the position of the receiver when noise levels vary. While it has been demonstrated in a small number of mammals and birds including some ...
Dinh Cao-Thang CT Department of Chemical Engineering and Centre de recherche sur les propriétés des interfaces et la catalyse (CERPIC), Université Laval, Quebec, G1V 0A6 - - 2014
T.-O. Do and co-workers report a three-dimensional ordered assembly of thin-shell Au/TiO2 hollow nanospheres in their Communication on page 6618 ff. These materials have a significantly enhanced photocatalytic activity compared to conventional nanopowders.
Lee Sangwook S Department of Material Science and Engineering, University of California at Berkeley, California 94709, USA. - - 2014
We report one dimensional (1-D) transparent-conducting-oxide arrays coated with light-absorbing semiconductors to simultaneously maximize light harvesting and charge collection in a photoelectrochemical (PEC) system. Tin-doped indium oxide (ITO) nanowire (NW) arrays are prepared on ITO thin-film substrates as the transparent-conducting-oxide, and TiO2 or CdSe/CdS/TiO2 thin layers were coated on the ...
Zhang Jie J Institute of Polymer Optoelectronic Materials and Devices, State Key Laboratory of Luminescent Materials and Devices, South China University of Technology, 510640, Guangzhou, P. R. China. - - 2014
A series of blue supramolecular polymers with different counterions based on host-guest interactions were developed for polymer light-emitting diodes. It was found that the counterions play important roles in the resulting materials' supramolecular interactions as well as the device performance.
Luo Yu - - 2014
High-efficiency organic light-emitting diodes (OLEDs) have generated tremendous research interest. One of the exciting possibilities of OLEDs is the use of flexible plastic substrates, which unfortunately have a dismatching refractive index compared with the conventional ITO anode and the air. To unlock the light loss on flexible plastic, we report ...
Xiangjie Zhao - - 2014
Polymer network liquid crystal (PNLC) was one of the most potential liquid crystal for submillisecond response phase modulation, which was possible to be applied in submillisecond response phase only spatial light modulator. But until now the light scattering when liquid crystal director was reoriented by external electric field limited its ...
Lee Ji-Hoon - - 2014
Conventional film patterned retarder (FPR) production requires a photo-alignment layer and a UV exposure process through a patterned wire-grid photo-mask, increasing the cost as well as limiting the resolution of FPR. We proposed a novel method for the fabrication of FPR without using the alignment layer and the photo-mask. Reactive ...
Schoenfeld Andreas A AA Department of Medical Radiation Physics, Carl von Ossietzky University, Oldenburg, Germany. Department of Radiation Therapy, Pius Hospital, Oldenburg, - - 2014
Optical experiments and theoretical considerations have been undertaken in order to understand the causes of the 'orientation effect' and the 'parabola effect', the artefacts impairing the desired light absorption measurement on radiochromic EBT3 films with flatbed scanners. EBT3 films exposed to doses up to 20.9 Gy were scanned with an ...
Yoon Juyoung J Department of Chemistry and Nano Science, Ewha Womans University, Seoul 120-750 (Republic of Korea). - - 2014
Light up tomorrow: A photochromic material with excellent fatigue resistance, high thermal stability, and quantitative photoswitching can be used as a linear photoswitching material to replace nonlinear optical materials for encoding optical signals. Therefore, information in one light ray can be directly transmitted to another light ray without converting back ...
Wu Fengshou F College of Chemistry and Molecular Sciences, Wuhan University, Wuhan, P. R. China. - - 2014
A new approach has been illustrated for the development of stable, efficient, and environmentally "friendly" white phosphorescent materials. Under mild conditions, a new one-dimensional coordination polymer has been prepared from benzo-18-crown-6 with CuI in the presence of KI, which is capable of emitting direct white light in the solid state.
Cryan Paul M - - 2014
Long-distance migration evolved independently in bats and unique migration behaviors are likely, but because of their cryptic lifestyles, many details remain unknown. North American hoary bats (Lasiurus cinereus cinereus) roost in trees year-round and probably migrate farther than any other bats, yet we still lack basic information about their migration ...
García-Fernández Luis L Max-Planck-Institut für Polymerforschung, Ackermannweg 10, 55128, Mainz, - - 2014
Polyurethane thin films that photopolymerize and photodegrade upon exposure to light of different wavelengths are presented. The chromic response is based on two caged monomers with the ability to be activated or photocleaved with different wavelengths under single and two-photon excitation. This material represents a dual photoresist with "positive" and ...
Chen Hsi-Chao - - 2014
The effects of different pitch and angle of gradual-triangle lenticular lens for the point-blank LED fog lamp were investigated under the standard of ECE R19. The novel LED fog lamp was assembled from a point-blank LED light source, a parabolic reflector, and a gradual-triangle lenticular lens. Light tracing analysis was ...
Luursema Jan-Maarten JM Department of Surgery, Radboud University Nijmegen Medical Centre, Nijmegen, The Netherlands; Department of Operating Rooms, Radboud University Nijmegen Medical Centre, Nijmegen, The Netherlands. Electronic address: - - 2014
Virtual reality simulators are increasingly used in laparoscopy training. Such simulators allow objective assessment of performance. However, both low-level variables and overall scores generated by the simulator can be hard to interpret. We present a method to generate intermediate performance variables and show how the resulting variables can be used ...
Brongersma Mark L ML Geballe Laboratory for Advanced Materials, Stanford University, Stanford, California 94305, - - 2014
High-performance photovoltaic cells use semiconductors to convert sunlight into clean electrical power, and transparent dielectrics or conductive oxides as antireflection coatings. A common feature of these materials is their high refractive index. Whereas high-index materials in a planar form tend to produce a strong, undesired reflection of sunlight, high-index nanostructures ...
Pyo Jaeyeon J X-ray Imaging Center, Department of Materials Science and Engineering, Pohang University of Science and Technology, Pohang, 790-784, Republic of Korea. - - 2014
Light-emitting conjugated polymer nanowires are vertically grown and remotely manipulated into a freestanding straight or curved structure in three-dimension. This approach enabled us to eliminate substrate coupling, a critical issue in nanowire photonics in the past decade. We for the first time accomplished characterization of propagation and bending losses of ...
Kim Woo-Hee - - 2014
We report confinement of ferroelectric domain-wall motion at conducting-nanofilament wall in epitaxial BiFeO3 thin film on Nb-doped SrTiO3 substrate. The BiFeO3 film exhibited well-defined ferroelectric response and unipolar resistive switching behavior. We artificially formed conducting-nanofilaments in the BiFeO3 via conducting atomic force microscope techniques. The conducting-nanofilament wall, which does not ...
Zhu Zhixiang Z National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei, Anhui 230029, People's Republic of - - 2014
A novel vacuum ultraviolet (VUV) light source assembly (VUVLSA) for enhancing the ionization efficiency of photoionization mass spectrometer has been described. The VUVLSA composes of a Krypton lamp and a pair of disk electrodes with circular center cavities. The two interior surfaces that face the photoionization region were aluminum-coated. VUV ...
Lucey Siobhan M SM Department of Paediatric Dentistry, Edinburgh Dental Institute, Edinburgh, - - 2014
There is a lack of data on polymerization of resin-based materials (RBMs) used in paediatric dentistry, using dual-peak light-emitting diode (LED) light-curing units (LCUs). To evaluate the degree of conversion (DC) of RBMs cured with dual-peak or single-peak LED LCUs. Samples of Vit-l-escence (Ultradent) and Herculite XRV Ultra (Kerr) and ...
Yuan Renmin - - 2014
Water tank experiments and numerical simulations are employed to investigate the characteristics of light propagation in the convective boundary layer (CBL). The CBL, namely the mixed layer (ML), was simulated in the water tank. A laser beam was set to horizontally go through the water tank, and the image of ...
Botiz Ioan - - 2014
We show here that treatment of thin films of conjugated polymers by illumination with light leads to an increase of the intensity of their photoluminescence by up to 42%. The corresponding enhancement of absorbance was much less pronounced. We explain this significant enhancement of photoluminescence by a planarization of the ...
Oh Seung-Won - - 2014
We propose an optical compensation scheme that uses uniaxial films for perfect elimination of light leakage over the entire viewing cone in a homogeneously-aligned liquid crystal cell. Uniaxial films with different dispersion characteristics are used so that they can compensate one another to achieve achromatic optical compensation. Owing to the ...
Wang Gang G State Key Lab of Crystal Materials, Shandong University, Jinan 250100, People's Republic of China. - - 2014
CuSCN is applied, for the first time, in a photocatalytic system to form CuO/CuSCN valence state heterojunctions, which exhibited enhanced visible light driven photocatalytic activity and, surprisingly, ultraviolet light restrained activity. Proper migration of photo-generated carriers is proposed to explain the photocatalytic process.
Spitler Ryan R University of California Irvine, Beckman Laser Institute, Department of Developmental & Cell Biology, 1002 Health Sciences Road, Irvine, California - - 2014
ABSTRACT. Low-level light therapy has been shown to improve in vitro wound healing. However, well-defined parameters of different light sources for this therapy are lacking. The goal of this study was (1) to determine if the wavelengths tested are effective for in vitro wound healing and (2) to compare a ...
Akbari Hoda - - 2014
A holographic device is under development that aims to improve light collection in solar cells. The aim is to explore the potential of using photopolymer holographic optical elements (HOEs) to collect light from a moving source, such as the sun, and redirect it for concentration by a holographic lens. A ...
Hernandez-Sosa Gerardo G Light Technology Institute, Karlsruhe Institute of Technology, Engesserstr. 13, 76131, Karlsruhe, Germany; InnovationLab, Speyererstr., 4, 69115, Heidelberg, - - 2014
Light-emitting electrochemical cells (LECs) are fabricated by gravure printing. The compromise between device performance and printing quality is correlated to the ink formulation and the printing process. It is shown that the rheological properties of the ink formulations of LECs can be tailored without changing the chemical composition of the ...
Santos Alexandre M C - - 2014
A model is developed to evaluate the light collection of a diffuse light source located at the tip of an optical fibre. The model is confirmed experimentally and used to evaluate and compare the light collection efficiency of different fibre-coupled luminescence dosimeter probe designs. The model includes contributions from both ...
Butt Haider - - 2014
Devitrite is a novel material produced by heat treatment of commercial soda-lime-silica glass. It consists of fans of needle-like crystals which can extent up to several millimeters and have interspacings of up to few hundred nanometers. To date, only the material properties of devitrite have been reported and there has ...
Baker David R - - 2014
Photoactivity of native trimeric, and non-native monomeric Photosystem I (PSI) extracted from Thermosynechococcus elongatus is compared in a photoelectrochemical system. The PSI monomer is isolated by disassembling a purified PSI trimer using a freeze-thaw technique in presence of the short-chain surfactant, octylthioglucoside. Photoactive electrodes are constructed with PSI, functioning as ...
Huang Jia Jia JJ Key Laboratory for Polymeric Composite and Functional Materials of Ministry of Education, School of Chemistry and Chemical Engineering, Sun Yat-sen University, Guangzhou 510275, China. cesrmz@mail.sysu.edu.cn - - 2014
By using epoxy silane as a modifier and stabilizer, ZnO quantum dots (QDs) were synthesized by a one-step precipitation approach. The ZnO QDs acquired showed satisfactory redispersibility and exhibited strong and stable photoluminescence in both solution and dry states. When the ZnO QDs content was as high as 8 wt%, ...
Haigh Paul Anthony - - 2014
This paper presents new experimental results on a polymer light-emitting diode based visible light communications system. For the first time we demonstrate a 10 Mb/s link based on the on-off keying data format with real time equalization on a field programmable gate array. The 10 Mb/s transmission speed is available ...
Smith Matthew L ML Department of Engineering, Hope College, 27 Graves Place, Holland, MI 49423, USA. - - 2014
Light responsive materials that exhibit wirelessly actuated, multidimensional deformation are excellent candidates for programmable matter applications such as morphing structures or soft robotics. A central challenge to designing adaptive structures from these materials is the ability accurately predict three dimensional deformations. Previous modeling efforts have focused almost exclusively on pure ...
Cates Stephanie L SL Department of Chemical and Environmental Engineering, Yale University , New Haven, Connecticut 06520-8286, United - - 2014
The objective of this study was to develop visible-to-ultraviolet C (UVC) upconversion ceramic materials, which inactivate surface-borne microbes through frequency amplification of ambient visible light. Ceramics were formed by high-temperature sintering of compacted yttrium silicate powders doped with Pr(3+) and Li(+). In comparison to previously reported upconversion surface coatings, the ...
Haraldsson Matilda M Department of Biological and Environmental Sciences, University of Gothenburg, Fiskebäckskil, - - 2014
The vertical distribution and migration of plankton organisms may have a large impact on their horizontal dispersal and distribution, and consequently on trophic interactions. In this study we used video-net profiling to describe the fine scale vertical distribution of Mnemiopsis leidyi in the Kattegat and Baltic Proper. Potential diel vertical ...
Barre Arnaud A Laboratory of Movement Analysis and Measurement (LMAM), EPFL, Lausanne, - - 2014
C3D file format is widely used in the biomechanical field by companies and laboratories to store motion capture systems data. However, few software packages can visualize and modify the integrality of the data in the C3D file. Our objective was to develop an open-source and multi-platform framework to read, write, ...
Xu Ruijuan R Department of Materials Science and Engineering, and Materials Research Laboratory, University of Illinois, Urbana, Illinois 61801, - - 2014
In ferroelectrics, the effect of domain wall motion on properties has been widely studied, but non-motional or stationary contributions from the volume of material within the domain wall itself has received less attention. Here we report the measurement of stationary domain wall contributions to permittivity in PbZr0.2Ti0.8O3 films. Studies of ...
Netherton Sarah E SE Northern Illinois University, United - - 2014
Perturbed colonies of Phenganax parrini and Sarcothelia sp. exhibit migration of symbionts of Symbiodinium spp. into the stolons. Densitometry and visual inspection indicated that polyps bleached, while stolons did not. When migration was triggered by temperature, light, and confinement, colonies of Sarcothelia sp. decreased rates of oxygen formation in the ...
Pacín Manuel M 1 IFEVA, University of Buenos Aires and - - 2014
In darkness, the E3 ligase COSTITUTIVE PHOTOMORPHOGENESIS 1 (COP1) targets to degradation ELONGATED HYPOCOTYL 5 (HY5) and other proteins required for photomorphogenesis (Osterlund et al., 2000; Saijo et al., 2003; Seo et al., 2003). Light inactivates COP1, allowing photomorphogenesis to proceed (Lau and Deng, 2012). Pioneer studies have demonstrated that ...
Dohner Emma R - - 2014
We use organic cations to template the solution-state assembly of corrugated lead-halide layers in bulk crystalline materials. These layered hybrids emit radiation across the entire visible spectrum upon ultra-violet excitation. They are promising as single-source white-light phosphors for use with ultraviolet light-emitting diodes in solid-state lighting devices. The broadband emission ...
Tanimoto Hirokazu H Department of Physics, The University of Tokyo, Tokyo, Japan. Electronic address: - - 2014
For biophysical understanding of cell motility, the relationship between mechanical force and cell migration must be uncovered, but it remains elusive. Since cells migrate at small scale in dissipative circumstances, the inertia force is negligible and all forces should cancel out. This implies that one must quantify the spatial pattern ...
Sobolewska Anna A Institute of Physical and Theoretical Chemistry , Wroclaw University of Technology , Wybrzeze Wyspianskiego 27, 50-370 Wroclaw, - - 2014
Holographic grating recording in azobenzene-based polymers using a single coherent light of a specific wavelength (monophotonic recording) is the basis of the majority of the applications of this type of material. Here, we report a new approach to holographic recording that uses two light sources having different wavelengths during the ...
Liu Chao - - 2014
Classifying raw, unpainted materials--metal, plastic, ceramic, fabric, and so on--is an important yet challenging task for computer vision. Previous works measure subsets of surface spectral reflectance as features for classification. However, acquiring the full spectral reflectance is time consuming and error-prone. In this paper, we propose to use coded illumination ...
Morris Caleb C From the Department of Ophthalmology and Visual Sciences (Morris, Werner, Liu, Stallings, Floyd), John A. Moran Eye Center, University of Utah, Salt Lake City, Utah, USA; and Visão Institutos Oftalmológicos Associados (Barra), Brasília, DF, - - 2014
To evaluate light scattering and light transmittance in cadaver eye-explanted intraocular lenses (IOLs) manufactured from different materials. John A. Moran Eye Center, University of Utah, Salt Lake City, Utah, USA. Experimental study. Forty-nine pseudophakic cadaver eyes were selected according to IOL material/type and implantation duration, and the IOLs were explanted. Hydrophobic ...
Li L L LL Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, 72 Wenhua Road, Shenyang 110016, P.R. - - 2014
Incoherent twin boundaries (ITBs) are widespread and play a crucial role in unidirectional deformation behavior of materials, however, the intrinsic role of individual ITB under cyclic loading remains elusive. Here we show the fatigue cracking behavior of Cu bicrystal with an ITB as its sole interface for the first time. ...
Ha Jun Mok - - 2014
Silicon (Si) nanostructures that exhibit a significantly low reflectance in ultraviolet (UV) and visible light wavelength regions are fabricated using a hydrogen etching process. The fabricated Si nanostructures have aperiodic subwavelength structures with pyramid-like morphologies. The detailed morphologies of the nanostructures can be controlled by changing the etching condition. The ...
Bodrumlu E E Department of Endodontics, Faculty of Dentistry University of Ondokuz Mayis, Samsun, Turkey - - - 2014
Aim: Polymerization ability of light-curing devices can affect the light-cured material hardness. The purpose of the present study was to evaluate and compare the hardness of three temporary filling materials that had been light-cured by either a light emitting diode (LED) or a halogen light-curing unit. Methods: The temporary filling ...
Yu Yiling Y Department of Physics, North Carolina State University, Raleigh NC - - 2014
Understanding the maximal enhancement of solar absorption in semiconductor materials by light trapping promises the development of affordable solar cells. However, the conventional Lambertian limit is only valid for idealized material systems with weak absorption, and cannot hold for the typical semiconductor materials used in solar cells due to the ...
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