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Heeres Reinier - - 2014
The spatial structure of light with Orbital Angular Momentum, or "twisted light", closely resembles the shape of atomic wavefunctions. It could therefore make symmetry-forbidden transitions in quantum dots possible. However, the vanishing intensity in the center of an OAM beam usually makes this effect weak. Here we show a plasmonic ...
Kumar Raju R Centre for Nano Materials, International Advanced Research Centre for Powder Metallurgy and New Materials, Hyderabad 500005, - - 2014
Herein, we report the development of a ZnO-based visible-light-driven photocatalyst by interfacial charge transfer process for the inactivation of pathogens under visible-light illumination. Surface modification by a cocatalyst on ZnO, prepared by flame spray pyrolysis process is carried out to induce the visible-light absorption in ZnO. Optical studies showed that ...
da Fontoura Frasca Luis Carlos LC *Associate Professor, Department of Conservative Dentistry, School of Dentistry, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil. †Private Practice, Porto Alegre, Brazil. ‡Adjunct Professor, Department of Conservative Dentistry, School of Dentistry, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil. §Adjunct Professor, Department of Implant Odontology and Prosthodontics, School of Dentistry, Universidade Luterana do Brasil, Canoas, - - 2014
To compare retention forces of 3 overdenture attachment systems with metal and plastic components. Four samples of each system evaluated (Ball-Attachment [metal]; O-Ring, and ERA [plastic]) were prepared and underwent fatigue and retention force in a universal testing machine. Maximum retention force (N) was measured at 6 time points (from ...
Cheloni Giulia G Environmental Biogeochemistry and Ecotoxicology, Institute F.-A. Forel, Earth and Environmental Sciences, Faculty of Sciences, University of Geneva, 10, Route de Suisse, CH-1290 Versoix, - - 2014
The present study showed the important role of light intensity and spectral composition on Cu uptake and effects on green alga Chlamydomonas reinhardtii. High-intenisty light (HL) increased cellular Cu concentrations, but mitigated the Cu-induced decrease in chlorophyll fluorescence, oxidative stress and lipid peroxidation at high Cu concentrations, indicating that Cu ...
Amani Samreen S Department of Biochemistry, Faculty of Life Sciences, Aligarh Muslim University, Aligarh, 202002, - - 2014
Misfolding and aggregation of proteins is involved in some of the most prevalent neurodegenerative disorders. The importance of collagen stems from the fact that it is one of the dominant component used for tissue engineering and drug delivery applications and is a major component of skin, tendon, bone and other ...
Chang Pingjing P State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, PR China. zhaofy@ciac.ac.cn - - 2014
The photocatalytic activity of CdS/P25 hybrid catalysts was studied under visible-light irradiation. The CdS quantum dots sensitized P25 (CdS QDs-P25) showed extremely enhanced activity in the reduction of o-chloronitrobenzene (o-CNB) by comparing to CdS-P25 prepared by the direct deposition-precipitation method in the presence of HCOOH. The synergistic effects between CdS ...
Ho My Duyen MD School of Chemical Engineering, Sungkyunkwan University, Suwon, 440-746, South - - 2014
About 30 nm quantum-dot thin films are formed by electrospray deposition (ESD) process and quantum-dot-light-emitting-diodes (QD-LEDs) are demonstrated. Maximum brightness of 23 000 cd m(-2) and current efficiency of 5.9 cd A(-1) are achieved with the ESD process. The ESD process can be a potential solution for large area quantum ...
Echtermeyer Tim J - - 2014
Graphene's high mobility and Fermi velocity, combined with its constant light absorption in the visible to far-infrared range, make it an ideal material to fabricate high-speed and ultra-broadband photodetectors. However, the precise mechanism of photodetection is still debated. Here, we report wavelength and polarization dependent measurements of metal-graphene-metal photodetectors. This ...
Rivera Debra S DS Department of Neurophysics, Max Planck Institute for Human Cognitive and Brain Sciences, Stephanstrasse 1a, 04103, Leipzig, Germany, - - 2014
To identify a shielding material compatible with optical head-motion tracking for prospective motion correction and which minimizes radio frequency (RF) radiation losses at 7 T without sacrificing line-of-sight to an imaging target. We evaluated a polyamide mesh coated with silver. The thickness of the coating was approximated from the composition ratio ...
Wang Feng F Department of Chemistry, Waterloo Institute for Nanotechnology, University of Waterloo, Waterloo, Ontario, Canada, N2L - - 2014
Zwitterionic phosphotydylcholine lipo-somes stably adsorb a number of metal oxide nanoparticles via its phosphate group. This is different from physisorption and fusion with SiO2 . The hybrid materials can be internalized by cancer cells and TiO2 allows light controlled liposome content release.
Skordos Dimitrios - - 2014
We report a study that explored the mechanisms used in hypothesizing meanings for novel motion predicates (verbs and prepositions) cross-linguistically. Motion stimuli were presented to English- and Greek-speaking adults and preschoolers accompanied by (a) a novel intransitive verb, (b) a novel transitive verb, (c) a novel transitive preposition, or (d) ...
Liu Siqi S State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry and Chemical Engineering, Fuzhou University, Fuzhou, 350002, P. R. China. - - 2014
Branched hierarchical CdS/ZnO nanocomposites have been synthesized for application toward photocatalytic fine-chemical synthesis. Growing ZnO nanorods on the surface of CdS nanowires boosts the light harvesting efficiency and charge separation as well as fast charge transport and collection. A Z-scheme mechanism under artificial solar light is also proposed.
Zhang Jian J Key Laboratory of Soft Chemistry and Functional Materials, Nanjing University of Science and Technology, Ministry of Education, Nanjing 210094, China. - - 2014
CdS quantum dot/vermiculite (CdS/VMT) nanocomposites have been synthesized via a facile one-step method and characterized by X-ray diffraction, UV-vis diffuse reflection spectroscopy, X-ray photoelectron spectroscopy, and transmission electron microscopy. The photocatalytic hydrogen generation activities of these samples were evaluated using Na2S and Na2SO3 as sacrificial reagents in water under visible-light ...
Rothau Sergej - - 2014
Optical components manipulating both polarization and phase of wave fields find many applications in today's optical systems. With modern lithography methods it is possible to fabricate optical elements with nanostructured surfaces from different materials capable of generating spatially varying, locally linearly polarized-light distributions, tailored to the application in question. Since ...
Zhang W - - 2014
New demonstrations of effective interaction between light and artificially electromagnetic interface, or the metasurface, have stimulated intensive research interests on control of light to realize applications in beam steering, optical imaging and light focusing, etc. Here we reported a new type of planar metasurface of which every individual metamolecule is ...
Zhang Min - - 2014
In this letter, metal-semiconductor-metal (MSM) solar-blind photodetector was fabricated on LaAlO3 (110) substrates with Pt and Au electrodes. The substrate material was characterized by XRD and UV-visible absorption spectrum. At 10 V bias, the photodetector with Pt electrodes shows a very low dark current of 4.1 pA, which is much ...
Wang Hongyi - - 2014
We present a novel self-powered chip to detect the direction of incident light. This chip directly provides digitized output without the need of any off-chip power supply or optical or mechanical components. The chip was implemented in a standard 0.5 μm CMOS process. A microscale metal baffle was created by stacking ...
Babazadeh Amin - - 2014
In this paper we present a novel method to reliably strip the unwanted cladding light in high-power fiber lasers. Soft metals are utilized to fabricate a high-power cladding light stripper (CLS). The capability of indium (In), aluminum (Al), tin (Sn), and gold (Au) in extracting unwanted cladding light is examined. ...
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 ...
Chou Wei-Lun WL Department of Psychology, National Taiwan University Taipei, Taiwan ; Department of Psychology, Fo Guang University Yilan, - - 2014
Visual attention can be allocated to either a location or an object, named location- or object-based attention, respectively. Despite the burgeoning evidence in support of the existence of two kinds of attention, little is known about their underlying mechanisms in terms of whether they are achieved by enhancing signal strength ...
Zaman M R MR 0000-0001-9715-4652 Centre for Space Science (ANGKASA), Universiti Kebangsaan Malaysia (UKM), Bangi 43600, - - 2014
Analysis of the resonance response improvement of a planar C-band (4-8 GHz) antenna is proposed using parasitic element method. This parasitic element based method is validated for change in the active and parasitic antenna elements. A novel dual-band antenna for C-band application covering 5.7 GHz and 7.6 GHz is designed and fabricated. The ...
Chen Hongjun H Nanomaterials Centre, School of Chemical Engineering, The University of Queensland, St. Lucia, Brisbane, QLD, 4072, - - 2014
To better utilize the sunlight for efficient solar energy conversion, the research on visible-light active photocatalysts has recently attracted a lot of interest. The photosensitization of transition metal oxides is a promising approach for achieving effective visible-light photocatalysis. This review article primarily discusses the recent progress in the realm of ...
Yoon Jae Woong JW Dept. of Electrical Engineering, University of Texas at Arlington, Box 19016, Arlington, TX 76019, - - 2014
Metallic nanostructures are of immense scientific interest owing to unexpectedly strong interaction with light in deep subwavelength scales. Resonant excitations of surface and cavity plasmonic modes mediate strong light localization in nanoscale objects. Nevertheless, the role of surface plasmon-polaritons (SPP) in light transmission through a simple one-dimensional system with metallic ...
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 ...
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