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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 ...
Smith Adam D AD Department of Natural Resources Science, University of Rhode Island, Kingston, Rhode Island, United States of - - 2014
Atmospheric conditions fundamentally influence the timing, intensity, energetics, and geography of avian migration. While radar is typically used to infer the influence of weather on the magnitude and spatiotemporal patterns of nocturnal bird migration, monitoring the flight calls produced by many bird species during nocturnal migration represents an alternative methodology ...
Senna Irene I Faculty of Psychology, Milano-Bicocca University, Milan, Italy; Cognitive Neuroscience Department and Cognitive Interaction Technology-Center of Excellence, Bielefeld University, Bielefeld, - - 2014
Our body is made of flesh and bones. We know it, and in our daily lives all the senses constantly provide converging information about this simple, factual truth. But is this always the case? Here we report a surprising bodily illusion demonstrating that humans rapidly update their assumptions about the ...
Fujisaki Waka W Human Technology Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, - - 2014
Interest in the perception of the material of objects has been growing. While material perception is a critical ability for animals to properly regulate behavioral interactions with surrounding objects (e.g., eating), little is known about its underlying processing. Vision and audition provide useful information for material perception; using only its ...
Crupi Vincenza - - 2013
The vibrational dynamics of a new class of cross-linked polymers made up of cyclodextrins is here investigated in the microscopic range by the joint use of light and inelastic neutron scattering experiments. The effect of increasing the connectivity of the polymeric network on the vibrational dynamics of the system is ...
Zheng Huaili H Key laboratory of the Three Gorges Reservoir Region's Eco-Environment, State Ministry of Education, Chongqing University, Chongqing 400045, - - 2013
P(AM-DAC-BA) was synthesized through copolymerization of acrylamide (AM), acryloyloxyethyl trimethyl ammonium chloride (DAC), and butylacrylate (BA) under ultraviolet (UV) initiation using response surface methodology (RSM). The influences of light intensity, illumination time, and photoinitiator concentration on the intrinsic viscosity [η] of P(AM-DAC-BA) were investigated. RSM model based on the influencing ...
Kuo Yu-Ching YC Department of Special Education, University of Taipei, Taiwan; Program of Speech & Language Pathology, University of Taipei, - - 2013
This study examined the impact of spectral resolution on the processing of lexical tones and the number of frequency channels required for a cochlear implant (CI) to transmit Chinese tonal information to the brain. ERPs were recorded in an auditory oddball task. Normal-hearing participants listened to speech sounds of two ...
Koklamaz Esra - - 2013
In conventional manufacturing of potato chips, achieving an extremely low moisture content (2% by weight) in the final product necessitates prolonged exposure of potato slices to high oil temperatures. This promotes acrylamide formation and causes an exponential increase in acrylamide level toward the end of the frying process. In this ...
Johansson Lena L NPL, Middlesex, UK. Electronic address: - - 2013
In the framework of the European Metrology Research Programme (EMRP), the Joint Research Project MetroFission has a dedicated work package for the development of a portable Triple-to-Double-Coincidence-Ratio (TDCR) system dedicated to in-situ activity measurements of low-energy beta emitters arising from the operation of the next generation of nuclear power plants. ...
Schenkel Jan Hendrik - - 2013
Dual-responsive soft matter: A soft hybrid material composed of superparamagnetic nanoparticles and cyclodextrin vesicles self-assembles in microscale linear aggregates in water in response to magnetic field as well as light.
Güth Jan-Frederik - - 2013
The aim of this study was to compare the light translucency and fluorescence 5 manually and 11 CAD/CAM polymer materials to a glass-ceramic material. Light-transmission was measured using a spectrophotometer. Overall light transmission (n=40) was calculated as the integration (tc (λ) dλ [10(-5)]) of all tc values for the wavelengths ...
King Nicholas S - - 2013
The light scattering properties of hemispherical resonant nanoantennas can be used to redirect normal incidence light to propagate within a thin film or thin film-based device, such as a solar cell, for enhanced efficiency. While planar nanoantennas are typically fabricated as simple nanoparticles or nanostructures in the film plane, here ...
Scheiner Samuel M SM Division of Environmental Biology, National Science Foundation 4201 Wilson Blvd., Arlington, VA - - 2013
To understand empirical patterns of phenotypic plasticity, we need to explore the complexities of environmental heterogeneity and how it interacts with cue reliability. I consider both temporal and spatial variation separately and in combination, the timing of temporal variation relative to development, the timing of movement relative to selection, and ...
Watson Scott - - 2013
Visible light communications using a Gallium-nitride (GaN) laser diode is reported. Devices, which are cased in TO packages, show modulation bandwidths of up to 1.4 GHz. We demonstrate error-free data transmission, defined as transmission of 1×10<sup>-9</sup> bits without any errors, at 2.5  Gbit/s with a sensitivity of 11.5 dBm.
Santini Ario A Biomaterials Research, Edinburgh Dental Institute, The University of Edinburgh, - - 2013
Polymerization of Resin Based Composites (RBCs) initiated by a light curing unit activating photoinitiators. Different RBCs require different light energy levels for proper curing. Manufacturers are now producing RBCs with more than one initiator and not all of these will be properly polymerised with blue LED lights. An added problem ...
Patel Sunni R - - 2013
To assess the impact of light scatter, similar to that introduced by cataract on retinal vessel blood oxygen saturation measurements using poly-bead solutions of varying concentrations. Eight healthy, young, non-smoking individuals were enrolled for this study. All subjects underwent digital blood pressure measurements, assessment of non-contact intraocular pressure, pupil dilation ...
Kaczmarek Anna M - - 2013
This tutorial review focuses on the recent development of diverse synthetic approaches and possibilities for chemical tuning of the size, shape, and morphology, as well as properties such as luminescence, of rare earth tungstate and molybdate materials. The use of rare earth tungstate and molybdate nano- and micromaterials as single ...
Lee Ji-Woong - - 2013
Throughout human history, textiles have been integral to daily life, but their exploration in catalysis has been rare. Herein, we show a facile and permanent immobilization of organocatalysts on the textile nylon using ultraviolet light. The catalyst and the textile material require no chemical modification for the immobilization. All of ...
Hrsic Emin - - 2013
The preparation of multifunctional polymers and block copolymers by a straightforward one-pot reaction process that combines enzymatic transacylation with light-controlled polymerization is described. Functional methacrylate monomers are synthesized by enzymatic transacylation and used in situ for light-controlled polymerization, leading to multifunctional methacrylate-based polymers with well-defined microstructure.
Kowalczewski Piotr - - 2013
We study light-trapping in thin-film silicon solar cells with rough interfaces. We consider solar cells made of different materials (c-Si and μc-Si) to investigate the role of size and nature (direct/indirect) of the energy band gap in light trapping. By means of rigorous calculations we demonstrate that the Lambertian Limit ...
Oh Ji Hye - - 2013
This study introduces an efficient polarized, white phosphor-converted, light-emitting diode (pc-LED) using a remote phosphor film sandwiched between a reflective polarizer film (RPF) and a short-wavelength pass dichroic filter (SPDF). The on-axis brightness of polarized white light emission of a RPF/SPDF-sandwiched phosphor film over a blue LED, showed greater recovery ...
Teng Tun-Chien - - 2013
In this paper, we proposed a novel optical film 'Collimation Film with Equivalent Focal Reflective Aperture' (CFEFRA) that can collocate with the proper light guide plate (LGP) to provide a highly collimated planar light source (HCPLS) that not only has high intensity peak but also good uniformity. The CFEFRA has ...
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