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Kochuveedu Saji Thomas ST Department of Chemistry and Nano Science, Global Top 5 Research Program, Division of Molecular and Life Sciences, College of Natural Sciences, Ewha Womans University, 52, Ewhayeodae-gil, Seodaemun-gu, Seoul, Korea. - - 2014
The interaction between light and matter is the fundamental aspect of many optoelectronic applications. The efficiency of such devices is mainly dictated by the light emitting properties of fluorophores. Unfortunately, the intensity of emission is adversely affected by surface defects, scattering and chemical instability. Therefore, enhancing the luminescence of fluorophores ...
Kohl Jesse - - 2014
The light outcoupling efficiency of organic light-emitting optoelectronic devices is severely limited by excitation of tightly bound surface plasmon polaritons at the metal electrodes. We present a theoretical study of an organic semiconductor-silver-SiO<sub>2</sub> waveguide and demonstrate that by simple tuning of metal film thickness and the emission regime of the ...
Grant Stephen D - - 2014
Azimuthal and radial polarization states of light are used to produce conical diffraction (CD) from a KGd(WO<sub>4</sub>)<sub>2</sub> crystal. The patterns produced in the ring plane in each case display marked differences than those seen when linearly polarized incident light is used, with the production of a splitting of the CD ...
Gu Lijun L Key Laboratory of Chemistry in Ethnic Medicinal Resources, State Ethnic Affairs Commission & Ministry of Education, Yunnan University of Nationalities, Kunming, Yunnan 650500, China. - - 2014
6-Aryl substituted phenanthridines were synthesized via a visible-light-catalyzed cyclization of 2-isocyanobiphenyls with arylsulfonyl chlorides under oxidant-free and transition-metal-free conditions. This transformation represents an efficient and attractive synthetic utilization of arylsulfonyl chlorides.
Lee Minah M Department of Materials Science and Engineering, KAIST Institute for NanoCentury, KAIST, Daejeon, 305-701, Republic of - - 2014
Core-shell plasmonic nanohybrids are synthesized through a simple, solution-based process utilizing mussel-inspired polydopamine (PDA). The multi-purpose PDA not only facilitates plasmonic metal formation, but also serves as a scaffold to incorporate photosensitizers around metal cores as well as an adhesive between nanohybrids and substrates. The resulting plasmonic assembly exhibits highly ...
Amaral Joice A T JA Department of Physiotherapy and Occupational Therapy, Faculty of Philosophy and Sciences, UNESP (Marília), SP, Brazil. - - 2014
Objectives: The effects of chronic music auditory stimulation on the cardiovascular system have been investigated in the literature. However, data regarding the acute effects of different styles of music on cardiac autonomic regulation are lacking. The literature has indicated that auditory stimulation with white noise above 50 dB induces cardiac ...
Wong Jen It - - 2014
We fabricated a single active layer quantum dots light emitting diode(QD-LED) device based on colloidal CdSe (core)/CdS (arm) tetrapods nanostructures capable of simultaneously producing room temperature electroluminesence (EL) peaks at two spectrally distinct wavelengths, namely at ~500 nm and at ~660 nm. This remarkable dual EL was found to originate ...
Pham Minh-Hao MH Department of Chemical Engineering, Centre en catalyse et chimie verte (C3V), Laval University, Quebec, G1V 0A6, Canada. - - 2014
A hollow Fe2O3-TiO2-PtOx photocatalyst for visible light H2 generation was prepared from nanosized MIL-88B consisting of coordinatively unsaturated metal centers as a hard template. This photocatalyst is composed of hybrid metal oxide-TiO2 with controllable wall thickness and two different cocatalysts that are separately located on two surface sides.
Gao Junkuo J School of Materials Science and Engineering, Nanyang Technological University, Singapore 639798, Singapore. - - 2014
Here, we report a new Ti(iv)-based porous metal-organic framework (MOF) (), which displayed strong absorption in the visible region with a bandgap of 1.72 eV. The electronic structure and bandgap were further investigated by DFT calculations. Photoelectrochemical studies indicated that is photoactive under visible light illumination (λ > 400 nm) ...
Turzhitsky Vladimir V Center for Advanced Biomedical Imaging fnd Photonics, Beth Israel Deaconess Medical Center, Harvard University, Boston, Massachusetts 02215 - - 2014
The biomedical uses for the spectroscopy of scattered light by micro and nanoscale objects can broadly be classified into two areas. The first, often called light scattering spectroscopy (LSS), deals with light scattered by dielectric particles, such as cellular and sub-cellular organelles, and is employed to measure their size or ...
Sundaram Vijay M - - 2014
Light scattering from nonspherically symmetric pure dielectric structures is examined. From the finite element full-wave analysis, it is found that teardrop-shaped scatterers can focus visible light to a ∼10  nm spot with an intensity enhancement ∼10<sup>5</sup> when the incident light is radially polarized.
Zhao Zhao Z State Key Laboratory of Luminescence and Applications, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences (CAS), Changchun, Jilin 130033, China. tanhq870@126.com - - 2014
Stable reduced TiO2 rutile nanorods with well-defined facets were prepared by a solvothermal route in the presence of Zn powder. The oxygen vacancy in the TiO2 nanorods, which can be tuned by the amount of Zn, results in a narrow band gap and visible-light photocatalytic activity.
Yu Lijuan L College of Chemistry and Molecular Science, Wuhan University, Wuhan 430072, P. R. China. typeng@whu.edu.cn - - 2014
Zinc phthalocyanine (ZnPc) derivatives with asymmetric (Zn-tri-PcNc-2) or symmetric (Zn-tetrad-Nc) structure, which possess wide spectral response in the visible/near-IR light region, are synthesized and utilized as a sensitizer of graphitic carbon nitride (g-C3N4) with 0.5 wt% Pt-loading for photocatalytic H2 production. The experimental results indicate that Zn-tri-PcNc-2 exhibits much better ...
Mahajan Namit N Theoretical Physics Division, Physical Research Laboratory, Navrangpura, Ahmedabad 380 009, - - 2014
We consider one-loop QCD corrections and renormalization group running of the neutrinoless double-βdecay amplitude focusing on the short-range part of the amplitude (without the light neutrino exchange) and find that these corrections can be sizeable. Depending on the operator under consideration, there can be moderate to large cancellations or significant ...
Gu Yinghong Y Department of Electrical and Computer Engineering, National University of Singapore, Singapore 117576, Singapore. - - 2014
Dark plasmon resonance modes are optical modes that have small scattering cross-sections and are thus difficult to excite directly by light at normal incidence. In this paper, we propose to excite quadrupolar and higher-order modes with normal incident light (in the visible regime) on a continuous plasmonic metallic surface covering ...
Kopper Bence B Department of Biomechanics, Kinesiology and Informatics, Faculty of PE and Sport Science, Semmelweis University, Budapest, Hungary. Electronic address: - - 2014
In the present study we investigated kinematical characteristics of the knee and ankle extensors to estimate the length change properties of the contractile and the passive elements in countermovement jumps (CMJ) and drop jumps (DJ) performed with small (40°) and large (80°) range of joint motion (SRM and LRM). At ...
Dhakal Rabin - - 2014
We present a novel thin and flat solar concentrator design, inspired by the structure and optical functionality of the ommatidium in the compound eye of insects. By combining a microlens with a curved light guide, rather than the conventionally employed dielectric or metallic reflectors, we could simultaneously achieve low-loss light ...
Baldwin Alex S AS School of Life and Health Sciences, Aston University, Birmingham, - - 2014
The visual system pools information from local samples to calculate textural properties. We used a novel stimulus to investigate how signals are combined to improve estimates of global orientation. Stimuli were 29 × 29 element arrays of 4 c/deg log Gabors, spaced 1° apart. A proportion of these elements had ...
Odstrčil M M Optical Research Center, University Southampton, Southampton, United - - 2014
Light reflections are one of the main and often underestimated issues of plasma emissivity reconstruction in visible light spectral range. Metallic and other specular components of tokamak generate systematic errors in the optical measurements that could lead to wrong interpretation of data. Our analysis is performed at data from the ...
Manjavacas A A 1] IQFR-CSIC, Serrano 119, 28006 Madrid, Spain - - 2014
The ability to modulate light at high speeds is of paramount importance for telecommunications, information processing and medical imaging technologies. This has stimulated intense efforts to master optoelectronic switching at visible and near-infrared frequencies, although coping with current computer speeds in integrated architectures still remains a major challenge. As a ...
Sebastian Abin A Department of Plant Sciences, University of Hyderabad, Hyderabad 500046, - - 2013
Cadmium (Cd) accumulation and related stress responses have been investigated in red, blue and white lights exposed Oryza sativa L. cv MTU 7029. Cd translocation was reduced significantly by red and blue lights. Increase in amount of organic acids, thiols, and nutrients in the roots that cause Cd rhizocomplexation was ...
Kim Heejin - - 2013
A highly efficient photoelectrochemical cell was developed using quantum dot semiconductor coupled hierarchical ZnO nanostructure for hydrogen generation. The hierarchical ZnO nanostructure consists of ZnO nanowire as a core and 2-dimensional ZnO nanosheets shelled on the ZnO nanowire surface. This multi-dimensional nanostructured photoanode was optimized with solution process conditions for ...
Game Onkar - - 2013
Organic-inorganic hybrid photo-detectors with a self-sufficient mode of operation represent a research area of great current interest. In most efficient photodetectors and optoelectronic devices compound semiconductors containing toxic elements such as Cd, As, Te, S, Se etc. are used and these are also expensive. Hence there is also a rapidly ...
Wang Hongyi - - 2013
We present an on-chip optical sensor capable of detecting the direction of incident light. No off-chip optical or mechanical components or modifications-for example, baffles, slit structures, mirrors, etc.-are needed. The sensor was implemented in a standard 0.5 μm complementary metal-oxide semiconductor process. A pair of on-chip photodiodes separated by a metal ...
Choi Chang-Hoon - - 2013
The enhanced light output power of a InGaN/AlGaN-based light-emitting diodes (LEDs) using three different types of highly reflective Sn-doped indium oxide (ITO)/Al-based p-type reflectors, namely, ITO/Al, Cu-doped indium oxide (CIO)/s-ITO(sputtered)/Al, and Ag nano-dots(n-Ag)/CIO/s-ITO/Al, is presented. The ITO/Al-based reflectors exhibit lower reflectance (76 - 84% at 365 nm) than Al only ...
Kawawaki Tokuhisa - - 2013
For improvement of the conversion efficiency of solar cells, it is important to make effective use of near-infrared light, which accounts for about 40% of sunlight energy. Although solar cells based on quantum dots (QDs) such as PbS have been studied for the use of near-infrared light, their photoabsorption is ...
Kania Michał - - 2013
Inaccurate electrode placement and differences in inter-individual human anatomies can lead to misinterpretation of ECG examination. The aim of the study was to investigate the effect of precordial electrodes displacement on morphology of the ECG signal in a group of 60 patients with diagnosed cardiac disease. Shapes of ECG signals ...
Tang Shikui - - 2013
To assess the dosimetric impact caused by the interplay between intrafraction prostate motion and the intermittent delivery of proton pencil beam scanning (PBS). A cohort of 10 prostate patients was treated with PBS using a bilateral single-field uniform dose (SFUD) modality. Bilateral intensity-modulated proton therapy (IMPT) plans were generated for ...
Hakko Manabu - - 2013
Background scattered light should normally be reduced in industrial fabrication processes; however, we demonstrated that background scattered light from an optical element contains significant structural information about the element. This was revealed by quite good agreement between the measured scattering intensity distribution of a sample and a computer simulation of ...
Gill James - - 2013
Computational aeroacoustic methods are applied to the modeling of noise due to interactions between gusts and the leading edge of real symmetric airfoils. Single frequency harmonic gusts are interacted with various airfoil geometries at zero angle of attack. The effects of airfoil thickness and leading edge radius on noise are ...
Azzam R M A - - 2013
The complex Fresnel reflection coefficients r<sub>p</sub> and r<sub>s</sub> of p- and s-polarized light and their ratio ρ=r<sub>p</sub>/r<sub>s</sub> at the pseudo-Brewster angle (PBA) ϕ<sub>pB</sub> of a dielectric-conductor interface are evaluated for all possible values of the complex relative dielectric function ε=|ε|exp(-jθ)=ε<sub>r</sub>-jε<sub>i</sub>, ε<sub>i</sub>>0 that share the same ϕ<sub>pB</sub>. Complex-plane trajectories of r<sub>p</sub>, ...
Hwang Jisoo - - 2013
To investigate the effects of rods and cones in mesopic visual sensitivity, we perform spectral sensitivity experiments by varying viewing fields and adaptation levels. We obtain mesopic spectral sensitivities for 2° and 10° centrally viewing fields and a (10°-20°) peripherally viewing field at adaptation luminance levels of 0.04  cd/m<sup>2</sup>, 0.4  cd/m<sup>2</sup>, and ...
Grzelczak Marek - - 2013
"The possibility of using colloidal silver and gold as condensors for electron storage in artificial photosynthesis has prompted the recent renewed interest in these areas." This statement by Fendler and co-workers in 1983 is even more relevant in today's science and technology. In this tutorial review we summarize research regarding ...
Kong Duk-Jo - - 2013
In this study, we produce InGaN/GaN microcolumn LED (MC-LED) arrays having nonpolar metal sidewall contacts using a top-down method, where the metal contacts only with the sidewall of the columnar LEDs with an open top for transparency. The trapezoidal profile of the as-etched columns was altered to a rectangular profile ...
de Boer-Maggard Tara R - - 2013
Surge protector: A two-component peroxynitrite-generating platform has been engineered to release peroxynitrite (PN) in situ under the control of light. The system, which is constructed by layering sol-gel matrices containing xanthine oxidase (bottom layer) and a metal nitrosyl (top layer), allows studies of PN chemistry at varying fluxes of its ...
Yang Shang-Hua - - 2013
We report the design, fabrication, and experimental characterization of high-aspect-ratio metallic gratings integrated with nanoscale semiconductor structures, which enable efficient light-matter interaction at the nanoscale over interaction lengths as long as two times of the effective optical wavelength. The efficient light-matter interaction at the nanoscale is enabled by excitation of ...
Ciaccafava Alexandre - - 2013
We report the effect of UV-Vis light on the membrane-bound [Ni-Fe] hydrogenase from Aquifex aeolicus under turnover conditions. Using electrochemistry, we show a potential dependent light sensitivity and propose that a light-induced structural change of the [Ni-Fe] active site is related to an enhanced reactivation of the hydrogenase under illumination ...
Lee Jung Ryun - - 2013
Cervical dystonia (CD) produces involuntary neck muscle contractions that result in abnormal and often asymmetrical postures of the head and neck. Basal ganglia oscillatory activity in the 3-12 Hz band correlating with involuntary muscle activity suggests a role in the pathophysiology of primary dystonia. Despite the asymmetrical postures seen with ...
Sbierski B - - 2013
We examine theoretically the intersubband transitions induced by laser beams of light with orbital angular momentum (twisted light) in semiconductor quantum wells at normal incidence. These transitions become possible in the absence of gratings thanks to the fact that collimated laser beams present a component of the light's electric field ...
d'Enterria David - - 2013
Elastic light-by-light scattering (γγ→γγ) is open to study at the Large Hadron Collider thanks to the large quasireal photon fluxes available in electromagnetic interactions of protons (p) and lead (Pb) ions. The γγ→γγ cross sections for diphoton masses m_{γγ}>5  GeV amount to 12 fb, 26 pb, and 35 nb in p-p, p-Pb, and Pb-Pb ...
Buckley John G - - 2013
In this paper we use multivariate statistical techniques to gain insights into how adaptive gait involving obstacle crossing is regulated in lower-limb amputees compared to able-bodied controls, with the aim of identifying underlying characteristics that differ between the two groups and consequently highlighting gait deficits in the amputees. Eight unilateral ...
Hovis Jeffery K - - 2013
Scratches and other surface abrasions on protective eyewear can shorten their life cycle by scattering light from the image, which will compromise visual performance. Although scratch and abrasion resistance testing is well developed, there is little information available regarding visual acuity through lenses scratched in an actual work environment. We ...
Kochuveedu Saji Thomas - - 2013
Metal oxide semiconductors hold great promise for applications in energy conversion and storage, environmental remediation, optoelectronics, memory, light emission and other areas, but critical factors such as the high rate of charge-carrier recombination and limited light absorption have restricted more practical and viable applications. The remarkable ability of plasmonic noble ...
Guo Huizhang - - 2013
In pondering of new promising transparent conductors to replace the cost rising tin-doped indium oxide (ITO), metal nanowires have been widely concerned. Herein, we demonstrate an approach for successful synthesis of long and fine Cu nanowires (NWs) through a novel catalytic scheme involving nickel ions. Such Cu NWs in high ...
Chen Sanyuan - - 2013
Objective. Although various kinds of optrodes are designed to deliver light and sense electrophysiological responses, few have a tightly closed optical delivering site or electrical recording site. The large space between them often blurs the stimulation location and light intensity threshold. Approach. Based on an optical fiber, we develop an ...
Liu Haitao - - 2013
Under light illumination, metallic gratings present unexpected and fascinating phenomena, which are due to the complex charge patterns generated on the grating surfaces. The moving electrons are due to the launching of surface plasmon polaritons (SPPs), but only in part. We derive analytical expressions quantifying the plasmonic character of the ...
Suksaranjit P - - 2013
A variation in pacemaker stimulus amplitude can represent pacemaker system dysfunction from generator malfunction, lead insulation defect, lead fracture, or artefact of digital signal processing of the electrocardiography recorder. Pacemaker lead perforation into the pericardial space typically results in loss of capture which was not demonstrated in our patient. In ...
Roque Adriano L - - 2013
There are no data in the literature with regard to the acute effects of different styles of music on the geometric indices of heart rate variability. In this study, we evaluated the acute effects of relaxant baroque and excitatory heavy metal music on the geometric indices of heart rate variability ...
Ji Xiangdong - - 2013
I show that the parton physics related to correlations of quarks and gluons on the light cone can be studied through the matrix elements of frame-dependent, equal-time correlators in the large momentum limit. This observation allows practical calculations of parton properties on a Euclidean lattice. As an example, I demonstrate ...
Gunjakar Jayavant L - - 2013
Unusually high photocatalytic activity of visible light-induced O2 generation can be achieved by electrostatically-derived self-assembly between exfoliated Zn-Cr-LDH 2D nanosheets and POM 0D nanoclusters (W7O24(6-) and V10O28(6-)) acting as an electron acceptor. This self-assembly can provide a high flexibility in the control of the chemical composition and pore structure of ...
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