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Sheehan K J KJ Technology Research for Independent Living (TRIL), Trinity College Dublin, Dublin, Ireland. Electronic address: - - 2014
Higher functioning older adults rarely have their balance assessed clinically and as such early decline in balance is not captured. Early identification of declining balance would facilitate earlier intervention and improved management of the ageing process. This study sought to determine if (a) a once off inertial sensor measurement and ...
Horiguchi Yoshimasa - - 2014
Gold / silver / titania trilayered nanorods have been prepared by successive deposition of silver and titania layers on gold nanorods core and their photocatalytic activities were investigated under visible light illumination (λ > 420 nm). Photocatalytic activity of the trilayered nanorods for oxidation of 2-propanol depends on both the ...
He Enjie E School of Physics and Information Technology, Shaanxi Normal University, Xi'an 710119, People's Republic of China. Department of Physical and Electronics, Anhui Science and Technology University, Bengbu 233100, People's Republic of - - 2014
A novel hybrid nanostructure, that is a Ag nanoparticle decorated LaF3:Yb(3+)/Ln(3+)@SiO2 nanosphere (Ln=Er, Tm), was constructed by a facile strategy, and characterized by XRD, TEM, FTIR, XPS and UV-vis-NIR absorption. Obvious spectral broadening and red-shift on the surface plasmon resonance were obtained by adjusting the size and configuration of Ag ...
Jang Hongje - - 2014
Galvanic replacement reaction is a useful method to prepare various hollow nanostructures. We developed fast and facile preparation of biocompatible and structurally robust hollow Au-Ag nanostructures by using dextran coated Ag nanoparticle (dAgNP). Oxidation of the surface dextran alcohols was enabled by catalytic activity of the core Au-Ag nanostructure, introducing ...
Wang Xiaoyu X State Key Laboratory for Advanced Metals and Materials, School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, P. R. - - 2014
Metal-enhanced fluorescence of conjugated polyelectrolytes (CPs) is realized using a simple, green hybrid Ag nanocomposite film. Ag nanoparticles (Ag NPs) are pre-prepared by sodium citrate reduction and incorporated into agarose by mixing to form an Ag-containing agarose film (Ag@agarose). Through variation of the amount of Ag NPs in the Ag@agarose ...
Liu Fanxin F 1] National Laboratory of Solid State Microstructures and School of Physics, Nanjing University, Nanjing 210093, PR China [2] Department of Applied Physics, Zhejiang University of Technology, Xiaoheshan, Hangzhou 310023, PR - - 2014
We have demonstrated the plasmonic characteristics of an ultrathin tetrahedral amorphous carbon (ta-C) film coated with Ag nanoparticles. The simulation result shows that, under resonant and non-resonant excitations, the strongest plasmonic electric field of 1 nm ta-C coated Ag nanoparticle is not trapped within the ta-C layer but is released to ...
Jeong Lim L Department of Advanced Organic Materials and Textile System Engineering, Chungnam National University, Daejeon 305-764, Korea. - - 2014
Ag nanoparticles (NPs) were synthesized in formic acid aqueous solutions through chemical reduction. Formic acid was used for a reducing agent of Ag precursor and solvent of gelatin. Silver acetate, silver tetrafluoroborate, silver nitrate, and silver phosphate were used as Ag precursors. Ag+ ions were reduced into Ag NPs by ...
Hsu Kai-Chih KC Department of Chemical Engineering, National Cheng Kung University, Tainan 701, - - 2014
A nanocomposite of silver nanoparticles/reduced graphene oxide (Ag/rGO) has been fabricated as a surface-enhanced Raman scattering (SERS) substrate owing to the large surface area and two-dimensional nanosheet structure of rGO. A facile and rapid microwave-assisted green route has been used for the formation of Ag nanoparticles and the reduction of ...
Vysata Oldrich O Department of Neurology, Charles University in Prague, Faculty Hospital Hradec Kralove, Czech Republic; Department of Computing and Control Engineering, Institute of Chemical Technology, Prague, Czech Republic. Electronic address: - - 2014
Coherence changes can reflect the pathophysiological processes involved in human ageing. We conducted a retrospective population study that sought to analyze the age-related changes in EEG coherence in a group of 17,722 healthy professional drivers. The EEGs were obtained using a standard 10-20 electrode configuration on the scalp. The recordings ...
Maijenburg A Wouter AW MESA+ Institute for Nanotechnology, University of - - 2014
Photocatalytically active nanostructures require a large specific surface area with the presence of many catalytically active sites for the oxidation and reduction half reactions, and fast electron (hole) diffusion and charge separation. Nanowires present suitable architectures to meet these requirements. Axially segmented Ag|ZnO and radially segmented (coaxial) TiO2-Ag nanowires with ...
Tsuchiya Kaoru K Department of Nanomechanics, Tohoku University, Aoba 6-6-01, Aramaki, Aoba-ku, Sendai 980-8579, - - 2014
The melting behavior of an Ag microwire mesh induced by Joule heating was numerically investigated and compared with that of the corresponding Ag nanowire mesh with the same structure but different geometrical and physical properties of the wire itself. According to the relationship of melting current and melting voltage during ...
Kwoka Monika M Institute of Electronics, Silesian University of Technology, Gliwice 44-100, - - 2014
This is well known that the selectivity and sensitivity of tin dioxide (SnO2) thin film sensors for the detection of low concentration of volatile sulfides such as H2S in air can be improved by small amount of Ag additives. In this paper we present the results of comparative X-ray photoelectron ...
Chang Min-Hwa MH School of Advanced Materials Engineering, Kookmin University, Seoul 136-702, South - - 2014
Thin and long silver nanowires were successfully synthesized using the polyvinylpyrrolidone (PVP)-assisted polyol method in the presence of ionic liquids, tetrapropylammonium chloride and tetrapropylammonium bromide, which served as soft template salts. The first step involved the formation of Ag nanoparticles with a diameter of 40 to 50 nm through the reduction ...
Spain Rebecca I RI Neurology Service and MS Center of Excellence-West, Portland VA Medical Center, USA; Department of Neurology, Oregon Health & Science University, USA. Electronic address: - - 2013
Gait and balance deficits are a frequent complaint in MS but poorly captured by stopwatch-timed tests or rating scales. Body-worn accelerometers and gyroscopes are able to detect gait and balance abnormalities in people with MS who have normal walking speeds. Few longitudinal studies exist using this technology to study the ...
Pelliccioni G G Department of Neurology, INRCA IRCCS, Ancona, Italy, - - 2013
Somatosensory evoked potentials (SEPs) of the pudendal nerve are a well-established diagnostic tool for the evaluation of pelvic floor disorders. However, the possible influence of sex differences on response latencies has not been established yet. The aim of this study was to standardize the procedures and to evaluate possible effects ...
Puigmarti-Luis Josep - - 2013
A spatially-controlled synthesis of nanowire bundles of the functional crystalline coordination polymer (CP) Ag(I)TCNQ (tetracyanoquinodimethane) from previously fabricated and trapped monovalent silver CP (Ag(I)- Cys (cysteine)) using a room-temperature microfluidic-assisted templated growth method is demonstrated. The incorporation of microengineered pneumatic clamps in a two-layer polydimethylsiloxane-based (PDMS) microfluidic platform was used. ...
Yasukawa Tomoyuki - - 2013
A novel measurement system to determine oxygen consumption rates via respiration in migrating Zebrafish (Danio rerio) has been developed. A signal equalization system was adapted to detect oxygen in a chamber with one fish, because typical electrochemical techniques cannot measure respiration activities for migrating organisms. A closed chamber was fabricated ...
Huang Li L State Key Laboratory of Physical Chemistry of Solid Surfaces, Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005 (P.R. China), Tel: - - 2013
Large-area nanostructured Ag/Ag-tetracyanoquinodimethane (TCNQ) Schottky junctions are fabricated electrochemically on a mesoporous polyethylene terephthalate (PET) membrane-supported water/1, 2-dichloroethane (DCE) interface. When the interface is polarized, Ag(+) ions transfer across the PET membrane from the aqueous phase and are reduced to form metallic Ag on the PET membrane, which reacts further ...
Liou Li-Min LM Sobell Department of Motor Neuroscience and Movement Disorders, University College London-Institute of Neurology, University College London, United Kingdom; Department of Neurology, Kaohsiung Municipal Hsiao-Kang Hospital, Kaohsiung Medical University, Kaohsiung, - - 2014
Although the central autonomic network (CAN) has been well researched in animal models, the CAN in humans is still unclear, especially for cardiovascular control. This study aimed to investigate which areas of the cerebral cortices are associated with the peripheral cardiac autonomic control involved in the CAN in uremic patients ...
Luo Suibin - - 2013
Nano Ag-deposited BaTiO3 (BT-Ag) hybrid particles usable as fillers for flexible polymeric composites to obtain high dielectric constant, low conductivity and low dielectric loss were developed. BT-Ag hybrid particles were synthesized via seed-mediated growing process by a redox reaction between silver nitrate and ethylene glycol. Nano Ag particles with the ...
Yakushenko Alexey - - 2013
Electrochemical techniques rely on the stability of a defined reference potential. Due to the need for miniaturization, electrochemical lab-on-a-chip platforms often employ Ag/AgCl quasi-reference electrodes for this purpose. Here, we report on electrochemical artifacts resulting from nanoparticle-electrode collisions originating from standard chlorinated silver wires.
Lee Jae Hoon - - 2013
ITO/Ag/ITO (IAI) multilayer-based transparent conductive electrodes for ultraviolet light-emitting diodes are fabricated by reactive sputtering, optimized by annealing, and characterized with respect to electrical and optical properties. Increasing the annealing temperature from 300°C to 500°C decreased the sheet resistance and increased the transmittance. This may result from an observed improvement ...
Pol Margriet C - - 2013
To study sensor monitoring (use of a sensor network placed in the home environment to observe individuals' daily functioning (activities of daily living and instrumental activities of daily living)) as a method to measure and support daily functioning for older people living independently at home. Systematic review. Participants' homes. Community-dwelling ...
Hou Chao - - 2013
Large-area Au-aggregate-assembled fractal patterns with tailored sizes and densities are achieved by sputtering Au nanoparticles on hexagonally patterned bowl-shaped-dimples on Al foil and subsequent annealing. After decorating with much smaller Ag nanoparticles, the resultant substrates exhibit an active and reproducible SERS effect.
Singh Dheeraj K DK Department of Chemistry, Soongsil University, Seoul 156-743, South - - 2013
We detected a trace amount of the mycotoxin citrinin using surface-enhanced Raman scattering (SERS) on silver nanoparticle (Ag NP) surfaces. The SERS substrate on hydrophobic Teflon films was also introduced to observe the citrinin peaks. A broad band at ∼1382cm(-1), which was ascribed to the symmetric carboxylate stretching mode, was ...
Du Jingjing - - 2013
Rapid and sensitive SERS identification and quantification of arsenic species in multiple matrices have been realized using a Fe3O4@Ag magnetic substrate. The molecular structure of arsenic on Fe3O4@Ag characterized using EXAFS spectroscopy and DFT confirms the existence of a chemical effect on SERS enhancement.
Ntasi Argyro - - 2013
Abstract Objective: To investigate the microstructure, hardness, and electrochemical behavior of four contemporary Ag-based soldering alloys used for manufacturing orthodontic appliances. Materials and Methods: The Ag-based alloys tested were Dentaurum Universal Silver Solder (DEN), Orthodontic Solders (LEO), Ortho Dental Universal Solder (NOB), and Silver Solder (ORT). Five disk-shaped specimens were ...
Chen Sy-Hann - - 2013
This study presents a substantial enhancement in electroluminescence achieved by depositing Ag nanoparticles on an ITO-coated glass substrate (Ag/ITO) for approximately 10-s to form novel window materials for use in polymer light-emitting diodes (PLEDs). The PLEDs discussed herein are single-layer devices based on a poly[9,9-dioctylfluorene-co-benzothiadiazole] (F8BT) emissive layer. In addition ...
Li Shi-Kuo - - 2013
In this study, we report a facile bio-inspired method for large-scale preparation of highly dispersed Ag nanoparticles (NPs) on the surface of flexible reduced graphene oxide (rGO) paper with using dopamine (DA) both as a reductant and a surface modifier. Through the self-polymerization of dopamine, free-standing GO paper can be ...
Zhang M C - - 2013
We fabricated and tested periodic metal (Ag)-dielectric (SiO<sub>2</sub> or TiO<sub>2</sub>) multilayers with transparency bands in the visible range. For samples with Ag-TiO<sub>2</sub> interfaces, the optical properties exhibited relatively poor predictability, likely due to oxidation of the Ag layers. Ag/SiO<sub>2</sub>-based multilayers were found to be more predictable and stable, but the ...
Kim Kwang-Seok - - 2013
Direct printing such as inkjet, gravure, and screen printing is an attractive approach for achieving low-cost circuitry in the printed circuit board industry. One of the challenges for direct printing technology, however, is the poor resistance to electrochemical migration (ECM), especially for silver (Ag) which has been widely used in ...
Chen Chong - - 2013
An improvement in the power conversion efficiency (PCE) of the inverted organic solar cell (ITO/nc-TiO2/P3HT:PCBM/PEDOT:PSS/Ag) is realized by depositing CdS quantum dots (QDs) on a nanocrystalline TiO2 (nc-TiO2) film as a light absorption material and an electron-selective material. The CdS QDs were deposited via a chemical bath deposition (CBD) method. ...
He Yizhuo - - 2013
Using a unique oblique angle co-deposition technique, well aligned arrays of Ag nanoparticle embedded TiO2 composite nanorods have been fabricated with different concentrations of Ag. The structural, optical and photocatalytic properties of the composite nanostructures are investigated using a variety of experimental techniques and compared with those of pure TiO2 ...
Sivashanmugan Kundan - - 2013
A well-ordered Au-nanorod array with a controlled tip ring diameter (Au_NRsd) was fabricated using the focused ion beam method. Au_NRsd was then coupled with Ag nanoparticles (Ag NPs) to bridge the gaps among Au nanorods. The effect of surface-enhanced Raman scattering (SERS) on Au_NRsd and Ag NPs/Au_NRsd was particularly verified ...
Anggraini Sri Ayu - - 2013
A significant enhancement in hydrogen (H2) sensitivity as well as selectivity after aging for more than 40 days has been observed for a mixed-potential type sensor using ZnO(+ 84 wt.% Ta2O5) as a sensing electrode (SE) and yttria-stabilized zirconia (YSZ) as a solid electrolyte. The effect of aging process in ...
Lee Hiang Kwee - - 2013
An analytical platform suitable for trace detection using a small volume of analyte is pertinent to the field of toxin detection and criminology. Plasmonic nanostructures provide surface-enhanced Raman scattering (SERS) that can potentially achieve trace toxins and/or molecules detection. However, the detection of highly diluted, small volume samples remains a ...
Fu Lijun - - 2013
Free-standing coaxially structured Ag/carbon hybrid electrodes were prepared as potential anodes for micro-Li-ion batteries, which show excellent electrochemical performance, being essentially due to the beneficial effect of the unique structure, i.e. the Ag-core enhances the flexibility and electrochemical kinetics, while the carbon shell buffers volumetric change during cycling.
Uhm Soo-Hyuk - - 2013
To reduce the incidence of postsurgical bacterial infection that may cause implantation failure at the implant-bone interface, surface treatment of titanium implants with antibiotic materials such as silver (Ag) has been proposed. The purpose of this work was to create TiO2 nanotubes using plasma electrolytic oxidation (PEO), followed by formation ...
Zhang Qi - - 2013
We demonstrate the creation of Ag-based bimetallic platonic Janus nanostructures by confining galvanic replacement reaction at a nanoscale interface on highly symmetrical nanostructures such as Ag nanocubes and nanooctahedra using reactive microcontact printing (μCP). The extent of galvanic replacement reaction can be controlled kinetically to derive Janus nanostructures with Au ...
Liu Dongqing - - 2013
We developed an analog memristor based on the thickening/thinning of Ag nanofilaments in amorphous La1-xSrxMnO3 (a-LSMO) thin films. The Ag/a-LSMO/Pt memristor exhibited excellent pinched hysteresis loops under high excitation frequency, and the areas enclosed by the pinched hysteresis loops shrank with increasing excitation frequency, which is the characteristic typical of ...
Kim Jin-Hwan - - 2013
The effects of gas atmosphere and sputter time for depositing silver (Ag) on the structural, optical and electrical properties of ZnO/Ag/ZnO transparent conducting oxide (TCO) films have been investigated with sputtering Ag target in Ar or N2. It was found that the properties of the Ag and ZnO/Ag/ZnO films are ...
Oh Munsik - - 2013
The authors report high-efficiency GaN-based light-emitting diodes (LEDs) fabricated with identical Ag contact formed on both n- and p-layers. Ag contacts thermally annealed at optimized conditions yielded low specific contact resistances of 4.5 × 10<sup>-4</sup> and 9.4 × 10<sup>-4</sup> Ωcm<sup>2</sup>, and high optical reflectivity (at 450 nm) of 88.1 and ...
Celebioglu Asli - - 2014
One-step synthesis of size-tunable silver nanoparticles (Ag-NP) incorporated into electrospun nanofibers was achieved. Initially, in situ reduction of silver salt (AgNO3) to Ag-NP was carried out in aqueous solution of polyvinyl alcohol (PVA). Here, PVA was used as reducing agent and stabilizing polymer as well as electrospinning polymeric matrix for ...
Krampe Jean - - 2013
Dance-based therapy has the potential to slow the progression of functional limitations in older adults. The purpose of this study was to explore the feasibility of measuring the impact of dance-based therapy on the nighttime restfulness patterns of older adults in an aging-in-place facility using passive bed sensors. A secondary ...
Soares Marina - - 2013
Hearing screening programs in schools are particularly important for children because they can enable early detection of hearing problems and early intervention. However, there has been little research on this topic. The MB11BERAphone(®) is a novel, accurate and efficient Automated Auditory Brainstem Response device for hearing screening in infants. The ...
Kim Jong-Woong - - 2013
Recently, advances in nano-materials research have opened the door for various transparent conductive materials, which include CNTs, graphene, Ag and Cu nanowires, and printable metal grids. Among them, Ag nanowires are particularly interesting to synthesize because bulk Ag exhibits the highest electrical conductivity among all metals. We tried to synthesize ...
de Faria Andreia Fonseca - - 2013
This work reports on the preparation, characterization and antibacterial activity of a nanocomposite formed from graphene oxide (GO) sheets decorated with silver nanoparticles (GO-Ag). The GO-Ag nanocomposite was prepared in the presence of AgNO3 and sodium citrate. The physicochemical characterization was performed by UV-vis spectroscopy, X-ray diffraction (XRD), thermogravimetric analysis ...
Kim Kwan - - 2013
The physicochemical properties of metallic substrates are affected by the environment in different ways. It is generally difficult to determine these effects because the molecules in the environment interact weakly with metallic substrates. In this work, we demonstrate that even the effect of volatile organic compounds (VOCs) can be identified ...
Khatua Snehadrinarayan - - 2013
A bis-heteroleptic Ru(II) complex (1) is presented that acts as a single molecular dual analyte sensor and quantifies Hg(2+) and Ag(+) by luminescence at two different wavelengths. The sensor has stronger binding to Hg(2+) than to its likely competitor Ag(+) allowing quantification of Hg(2+) in a sample with Ag(+) without ...
Peláez R J - - 2013
Pairs of samples containing Ag nanoparticles (NPs) of different dimensions have been produced under the same conditions but on different substrates, namely standard glass slides and a thin layer of amorphous aluminum oxide (a-Al2O3) on-glass. Upon storage in ambient conditions (air and room temperature) the color of samples changed and ...
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