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Lindemann Ulrich U a Department of Clinical Gerontology and Rehabilitation , Robert-Bosch-Hospital , Stuttgart , - - 2014
The ability to rise from a chair or bed is critical to an individual's quality of life because it determines functional independence. This study was to investigate the effect of bed height and use of hands on trunk angular velocity and trunk angles during the sit-to-stand (STS) performance. Twenty-four older ...
Wu Kunlin K Key Laboratory for the Physics and Chemistry of Nanodevices, Department of Electronics, Peking University, Beijing 100871, - - 2014
The transition voltage of vacuum-spaced and molecular junctions constructed with Ag and Pt electrodes is investigated by non-equilibrium Green's function formalism combined with density functional theory. Our calculations show that, similarly to the case of Au-vacuum-Au previously studied, the transition voltages of Ag and Pt metal-vacuum-metal junctions with atomic protrusions ...
Yang Jin-Kyoung - - 2014
We have explored a single-step approach for rapid growth of Ag nanoshells (Ag NSs) under mild conditions. Without pre-deposition of seed metals, a uniform and complete layer of Ag shells was rapidly formed on silica core particles within 2 min at 25°C via single electron transfer from octylamine to Ag(+) ...
Chang Yi-Ming YM Electronics and Optoelectronics Research Laboratories, Industrial Technology Research Institute, Hsinchu 31040, - - 2014
A simple method is demonstrated to improve the folding reliability and sheet resistance of silver nanowire (Ag NW)-based transparent conductive films (TCFs) without overcoated layers or complicated processes. As-coated Ag NW film is immersed in a silver-surrounded solution, in which the silver was reduced by Tollen's reagent. Therefore, the reduced ...
Eom Hyeonjin H Department of Mechanical Engineering, Korea Advanced Institute of Science and Technology (KAIST), 291 Daehak-ro, Yuseong-gu, Daejeon, 305-701, Republic of Korea; Department of Nano Manufacturing Technology, Korea Institute of Machinery & Materials (KIMM), 156 Gajeongbuk-ro, Yuseong-gu, Daejeon, 305-343, Republic of - - 2014
Silver nanowire (Ag NW) based transparent electrodes are inherently unstable to moist and chemically reactive environment. A remarkable stability improvement of the Ag NW network film against oxidizing and sulfurizing environment by local electrodeposition of Ni along Ag NWs is reported. The optical transmittance and electrical resistance of the Ni ...
Jankowski Maciej M Physics of Interfaces and Nanomaterials, MESA+ Research Institute, University of Twente, P.O. Box 217, 7500 AE Enschede, The - - 2014
We have investigated the interaction of oxygen with the Ag/Pt(111) surface alloy by thermal desorption spectroscopy (TDS). The surface alloy was formed during the deposition of sub-monolayer amounts of silver on Pt(111) at 800 K and subsequent cooling to 300 K. The low-temperature phase of the surface alloy is composed ...
Kelchen Megan N MN Department of Pharmaceutical Sciences and Experimental Therapeutics, University of Iowa College of Pharmacy, Iowa City, Iowa, - - 2014
The objective of this study was to optimize a reproducible impedance spectroscopy method in elderly subjects as a means to evaluate the effects of microneedles on aging skin. Human volunteers were treated with microneedles at six sites on the upper arm. Repeated impedance measurements were taken pre- and post-microneedle insertion. ...
Mitrano Denise M - - 2014
Questions about how to regulate nano-enhanced products regularly arise as researchers determine possible nanoparticle transformation(s). Focusing concern on the incorporation and subsequent release of nano-Ag in the fabrics often overshadows the fact that many "conventional silver" antimicrobials such as ionic silver, AgCl, metallic Ag and other forms will also form ...
Kwon Namyong N SKKU Advanced Institute of Nanotechnology, Sungkyunkwan University, Suwon 440-746, - - 2014
Ag mesh-indium tin oxide (ITO) hybrid transparent conductive films were fabricated and evaluated for use in film heaters. PS monolayer templates were prepared using highly mono-dispersed PS spheres (11.2 μm) obtained by a filtering process with micro-sieves. At first, three Ag meshes with different sheet resistances (20, 100, and 300 ...
He Xuan X Institute of Chemical Materials, China Academy of Engineering Physics, Mianyang 621900, China. - - 2014
An efficient and green approach was used to fabricate novel and low-cost surface-enhanced Raman scattering (SERS) spectroscopy sensors based on 4-aminothiophenol (4-ATP) functionalized ZnO-Ag hybrid nanoflowers for the detection of explosives. Such SERS sensors exhibited high sensitivity to rhodamine 6G (R6G) at a low concentration of 10(-12) M and an ...
Cai P-F PF Department of Environmental Engineering, National Cheng Kung University, Tainan 70101, - - 2014
Drinking water shortage has become worse in recent decades. A new capacitive deionization (CDI) method for increasing water supplies through the effective desalination of seawater has been developed. Silver as nano Ag and Ag@C which was prepared by carbonization of the Ag(+)-β-cyclodextrin complex at 573K for 30min can add the ...
Azizi Seyed Naser SN Analytical Division, Faculty of Chemistry, University of Mazandaran, 47416-95447 Babolsar, Iran. Electronic address: - - 2014
Nanozeolite is one of the three dimensional nanoporous materials consisting of extremely accessible surface area and shorter diffusion pathways. In this study, NaX nanozeolite is synthesized using the hydrothermal method from natural silica source of stem sweep ash (SSA). The synthesized nanoparticles were characterized using X-ray diffraction, scanning electronic microscopy, ...
Kakuta Takayoshi - - 2014
Three-typed porphyrin derivatives with a different chain-length alkylcarboxylic acid as their peripheral anchor group have been prepared. Anodic photocurrents were observed in a simple system where the porphyrin derivatives were directly anchored on an indium tin oxide (ITO) electrode. Cathodic photocurrents and their plasmon-assisted enhancement appeared from an Ag nanoparticle ...
Hu Xiaoye - - 2014
Nano-petri-dish arrays assisted glancing angle Ag-sputtering was reported to synthesize Ag-nanoparticles (Ag-NPs) assembled bi-nanoring arrays as surface enhanced Raman scattering (SERS) substrates. By manipulating the sputtering-Ag duration, the gaps between the Ag-NPs in the bi-nanorings are tunable to acquire optimal electromagnetic field enhancement, and the ordered bi-nanoring arrays ensure excellent ...
Jiang Dan D State Key Laboratory of Supramolecular Structure and Materials and Institute of Theoretical Chemistry, Jilin University, Changchun, 130012, People's Republic of - - 2014
By constructing a limited two-dimensional (2D) area to regulate the coalescence of deposited Ag nanoparticles and to change the degree of aggregation of nanoparticles under annealing, a configuration of particles on pillar (POP) was fabricated successfully and high SERS enhancement similar to 'hot spots' was generated on the POP. With ...
Wang Xingli X State Key Laboratory for Physical Chemistry of Solid Surfaces, Collaborative Innovation Center of Chemistry for Energy Materials and Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China. - - 2014
One key challenge in making high-quality bimetallic nanocrystals is to prevent self-nucleation of individual metal components. We report in this work an effective seeded growth strategy that uses activated hydrogen atoms as the reducing agent to prepare core-shell bimetallic nanocrystals. In the developed method, Pd nanocrystals serve as the seed ...
Chang Hsiang-Yu - - 2014
Gold-tellurium nanostructures (Au-Te NSs), silver-tellurium nanostructures (Ag-Te NSs), and gold/silver-tellurium nanostructures (Au/Ag-Te NSs) have been prepared through galvanic reactions of tellurium nanotubes (Te NTs) with Au(3+), Ag(+), and both ions, respectively. Unlike use of less environmentally friendly hydrazine, fructose as a reducing agent has been used to prepare Te NTs ...
Dong Fan F Chongqing Key Laboratory of Catalysis and Functional Organic Molecules, College of Environmental and Biological Engineering, Chongqing Technology and Business University, Chongqing, 400067, China. - - 2014
Novel plasmonic 0D Ag nanocrystal decorated 3D (BiO)2CO3 hierarchical microspheres were fabricated with a one-pot hydrothermal method. The as-prepared samples were systematically characterized by X-ray diffraction, scanning electron microscopy, transmission electron microscopy, N2 adsorption-desorption isotherms, X-ray photoelectron spectroscopy, UV-vis diffuse reflectance spectroscopy, photoluminescence spectra, ns-level time-resolved fluorescence spectra, photocurrent generation ...
Swartz Ann M AM Department of Kinesiology, University of Wisconsin-Milwaukee, Milwaukee, Wisconsin, USA Center on Aging and Translational Research, University of Wisconsin-Milwaukee, Milwaukee, Wisconsin, - - 2014
The purpose of this study was to determine the responsiveness of two motion sensors to detect change in sedentary behaviour (SB) and physical activity (PA) during an occupational intervention to reduce sitting time. SB and PA were assessed using a hip-worn Actigraph GTX3 (AG) and a thigh-worn activPAL (AP) during ...
Cao Qi - - 2014
We report a facile single-step one-pot solvothermal process for tailoring the Au-Ag-S microstructures as bi-functional substrates for both surface-enhanced Raman scattering (SERS) detection and photocatalytic degradation of plasticizers diethylhexyl phthalate (DEHP) and diethylhexyl adipate (DEHA). Typically, two different microstructures, the Ag2S particles inlaid Au microflowers (Ag2S-Au MFs) and Au particles ...
Gao Xiaonan - - 2014
The synthesis of hollow Ag nanoshells (NSs) with tunable plasmon bands in the visible spectrum and their oxidative-assembly into high-surface-area, mesoporous, transparent and opaque Ag gel frameworks is reported. Thiolate-coated Ag NSs with varying size and shell thickness were prepared by fast chemical reduction of pre-formed Ag2O nanoparticles (NPs). These ...
Huang Lei - - 2014
Reduced Graphene Oxide (RGO) has proven to be effective in trace gas detection at room temperature ambient conditions. However, the slow response-recovery characteristic is a major hurdle for the RGO based gas sensors. Herein, we report a gravure-printed chemoresistor-type NO2 sensor based on sulfonated RGO (S-RGO) decorated with Ag nanoparticles ...
Chang Quanhong Q Department of Opto-electric Information Materials and Quantum Devices, School of Materials Science and Engineering, Harbin Institute of Technology, 150001 Harbin, China. - - 2014
Three-dimensional Ag nanoparticle/GNs (Ag/GNs) hybrids as highly efficient counter electrode (CE) materials for dye sensitized solar cells (DSSCs) is described, highlighting the Ag nanoparticles as zero-dimensional nanospacers inserting into GNs to lift the interspacing layer between individual GNs. It is demonstrated that, when the hybrids are used as CE materials ...
Huang Daodan D The Key Lab of Health Chemistry and Molecular Diagnosis of Suzhou, College of Chemistry, Chemical Engineering and Material Science, Soochow University, Suzhou 215123, PR - - 2014
We demonstrate the utilization of silver/gold nanocages (Ag/Au NCs) deposited onto transparent indium tin oxide (ITO) film glass as the basis of a reagentless, simple and inexpensive mercury probe. The localized surface plasmon resonance (LSPR) peak wavelength was located at ∼800nm. By utilizing the redox reaction between Hg(2+) ions and ...
Ma Jian-Ping JP College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Shandong Normal University, Jinan 250014, P. R. China. - - 2014
A Cu4L4 square-like molecular container which can be a reusable visual sensor for Ag(+) is reported. The present results can be a useful stepwise approach for the construction of the heterometallic supramolecular complexes with potential applications.
Fu Ye Y State Key Laboratory of Organic Inorganic Composites , Beijing 100029, - - 2014
Using tetraethyl orthosilicate as a main raw material, silica nanofibers (SiNFs) were prepared through the combination of a sol-gel process and an electrospinning technique followed by pyrolysis. Surface modified electrospun SiNFs developed by self-polymerization of polydopamine on the surface (SiNFs-PDA) served as templates for the electroless plating of silver nanoparticles ...
Xu Bingjun B Department of Chemistry and Chemical Biology, Harvard University, Cambridge, MA 02138 (USA), Fax: (+1) 617-496-8410; Present address: Department of Chemical and Biological Engineering, University of Delaware, Newark, DE 19716 - - 2014
Nanoporous gold, a dilute alloy of Ag in Au, activates molecular oxygen and promotes the oxygen-assisted catalytic coupling of methanol. Because this trace amount of Ag inherent to nanoporous gold has been proposed as the source of oxygen activation, a thin film Ag/Au alloy surface was studied as a model ...
Spence Daniel D Department of Chemistry, University of Leicester, Leicester LE1 7RH, UK. sfy1@le.ac.uk - - 2014
The formation of Ag nanoparticles by the addition of Ag atoms to helium droplets has been investigated. The resulting nanoparticles were then imaged by transmission electron microscopy after being deposited on a thin solid surface. In large helium droplets chains of Ag nanorods were observed similar to recently reported track-like ...
Harty Siobhán S Trinity College Institute of Neuroscience and School of Psychology, Trinity College Dublin, Dublin 2, Ireland, and Department of Clinical and Experimental Sciences, University of Brescia, and Istituti di Ricovero e Cura a Carattere Scientifico Centro San Giovanni di Dio Fatebenefratelli, Brescia, - - 2014
The ability to detect errors during cognitive performance is compromised in older age and in a range of clinical populations. This study was designed to assess the effects of transcranial direct current stimulation (tDCS) on error awareness in healthy older human adults. tDCS was applied over DLPFC while subjects performed ...
Kim Byoung-Joon BJ Institute for Applied Materials, Karlsruhe Institute of Technology, Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, - - 2014
The development of highly conductive metallic electrodes with long-term reliability is in great demand for real industrialization of flexible electronics, which undergo repeated mechanical deformation during service. In the case of vacuum-deposited metallic electrodes, adequate conductivity is provided, but it degrades gradually during cyclic mechanical deformation. Here, we demonstrate a ...
Wang Yulan Y Key Laboratory of Chemical Sensing & Analysis in Universities of Shandong, School of Chemistry and Chemical Engineering, University of Jinan, Jinan 250022, PR - - 2014
Determination of squamous cell carcinoma antigen (SCCA) in human serum plays an important role in diagnosis of cervical squamous cell carcinoma. In this work, Au/Ag/Au core/double shell nanoparticles (Au/Ag/Au NPs) were prepared by a simple approach and were used as novel enzyme-mimetic labels for development of a sandwich-type electrochemical immunosensor ...
Byeon Jeong Hoon - - 2014
Bimetallic nanostructures were fabricated via aerosol-assisted electroless silver deposition for catalytic CO conversion. An ambient spark discharge was employed to produce nanocatalysts, and the particles were directly deposited on a polytetrafluoroethylene substrate for initiating silver deposition to form Pd-Ag, Pt-Ag, Au-Ag bimetallic nanostructures as well as a pure Ag nanostructure. ...
Menzel Magnus - - 2014
Ag nanoparticles (NPs) in consumer's products are usually applied because of their anti-microbial properties, which are desired in fabrics for sportswear as well as cloth used for cleaning. Hazard to human health from airborne Ag NPs may occur when the NPs are inhaled. NPs are comparable in size to macromolecules, ...
Wang Zhong-Xia ZX Jiangsu Optoelectronic Functional Materials and Engineering Laboratory, School of Chemistry and Chemical Engineering, Southeast University, Nanjing 211189, China. - - 2014
This work presents the enhanced electrochemiluminescence (ECL) of a newly prepared nanosilver-carbon nanodot (Ag-C-dot) composite and its application for the sensitive detection of sulfide (S(2-)) ions. The Ag-C-dot composite was easily prepared by adding silver nitrate into C-dot colloids through an alkaline reduction. The obtained Ag-C-dots were characterized by UV-vis ...
Davis Tara M TM Department of Speech Pathology and Audiology, University of South - - 2014
Background: We recently described a research study in which age-related changes in interaural asymmetry were elicited using the N400 of the auditory event-related potentials (AERP) (Davis et al, 2013). The N400 was the primary focus due to its sensitivity to various aspects of semantic processing (Kutas and Hillyard, 1984), which ...
Leem Juyoung J Department of Mechanical Engineering, KAIST, Yuseong-Gu, 291 Daehak-ro, Daejeon 305-701, Korea. - - 2014
We present a microfluidic patterning system for fabricating nanostructured Ag thin films via a polyol method. The fabricated Ag thin films can be used immediately in a real-time SERS sensing system. The Ag thin films are formed on the inner surfaces of a microfluidic channel so that a Ag-patterned Si ...
Huang Linhong L Fujian Key Lab of Medical Instrument & Pharmaceutical Technology, Yishan Campus, Fuzhou University, Fuzhou, Fujian 350002, China; Institute of Research for Functional Materials, Fuzhou University, Yishan Campus, Fuzhou University, Fuzhou, Fujian 350002, China; College of Chemistry and Chemical Engineering, Qishan Campus, Fuzhou University, Fuzhou, Fujian 350108, - - 2014
Hexagonal Ag nanoplates (NPs) were synthesized by polyvinylpyrrolidone (PVP) and trisodium citrate (TSC) which selectively absorbed to Ag (100) and Ag (111) surfaces, then were anchored to graphene (GN) to form novel Ag NPs/GN composite. The thickness of Ag NPs is ~4nm and the length is 18-66nm. Transmission electron microscopy ...
Ma Sichao S Department of Chemistry, University of Illinois at Urbana-Champaign, 505 South Mathews Avenue, Urbana, IL 61801 (USA); International Institute for Carbon Neutral Energy Research (WPI-I2CNER), Kyushu University, Fukuoka - - 2014
Although significant research efforts have focused on the exploration of catalysts for the electrochemical reduction of CO2 , considerably fewer reports have described how support materials for these catalysts affect their performance, which includes their ability to reduce the overpotential, and/or to increase the catalyst utilization and selectivity. Here Ag ...
Luo Jiwen J Key Laboratory of Theoretical Chemistry of Environment, Ministry of Education, School of Chemistry and Environment, South China Normal University, Guangzhou 510006, People's Republic of China. State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510640, People's Republic of - - 2014
Silver nanoparticles (Ag NPs) were synthesized rapidly in one pot via the Tollens reaction, in which quaternized chitosan (QCS) and rectorite (REC) acted as the reducing and stabilizing agent, while other chemical reducing and stabilizing agents and the surfactant were not included. X-ray diffraction, scanning electron microscopy and transmission electron ...
Liu Zhen Z State Key Laboratory for Mechanical Behavior of Materials, School of Science, Xi'an Jiaotong University, Shann Xi, 710049, P. R. - - 2014
A hierarchical nanoparticle strategy to simultaneously gain super Raman signal amplification, high uniformity, and reproducibility is presented. Using hollow Au-Ag alloy nanourchins, an ultrahigh sensitivity, e.g., down to 1 fM concentrations for DEHP molecule is obtained. A small standard deviation of <10% is achieved by simply dropping and evaporating sub-100 ...
Zhou Qitao Q Key Laboratory of Materials Physics, and Anhui Key Laboratory of Nanomaterials and Nanostructures, Institute of Solid State Physics, Chinese Academy of Sciences, Hefei 230031, China. - - 2014
NiO-nanoflakes (NiO-NFs) grafted Ni-nanorod (Ni-NR) arrays stuck out of the porous anodic aluminum oxide (AAO) template are achieved by a combinatorial process of AAO-confined electrodeposition of Ni-NRs, selectively etching part of the AAO template to expose the Ni-NRs, wet-etching the exposed Ni-NRs in ammonia to obtain Ni(OH)2-NFs grafted onto the ...
Hwang Tai-Wei - - 2014
The effect of electrochemical potential on the behavior of electrochemically deposited Au-Ag-Au bimetallic atomic scale junctions (ASJs) is addressed here. A common strategy for ASJ production, begins with overgrown nanojunctions and uses electromigration to back-thin the junction. Here, these steps are carried out with the entire junction under electrochemical potential ...
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 ...
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