biosensing with plasmonic nanoparticles
Báo cáo khoa học: Electrochemical biosensing with nanoparticles Arben Merkoci pot
... ¸ Electrochemical biosensing with nanoparticles B A 3+ Au eAg Au Au Ag Au MP D C Cd2+ CdS MP Zn2+ ZnS Ag Au MP CuS Ag+ Cu2+ Fig Strategies used for DNA detection by labeling with metallic NPs ... with biology and electrochemistry is going to produce major advances in FEBS Journal 274 (2007) 310–316 ª 2006 The Author Journal compilation ª 2006 FEBS 313 Electrochemical biosensing with nanoparticles ... integration of nanotechnology with biology and electrochemistry is expected to produce major advances in the field of electrochemical biosensors Recent Electrochemical biosensing with nanoparticles progress...
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Polymer assisted synthesis of aligned amorphous silicon nanowires and their core shell structures with au nanoparticles
... structure of the SiNWs wrapped Au nanoparticles The average particle size of the wrapped Au nanoparticles in the composite SiNWs is ± 1.5 nm It is noted that the Au nanoparticles are well dispersed ... lead to a large amount of carbon nanoparticles having high chemical activity The growth of SiNWs may start from the reaction of the active carbon nanoparticles with the native oxide layer on Si ... 0) and (1 1), respectively, that sequentially cleaned with deionized water, ethanol, and acetone, to allow the formation of the polymer film with the thickness of 200 nm after the removal of the...
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Silicon nanowires grown on si(1 0 0) substrates via thermal reactions with carbon nanoparticles
... interface is terminated after complete consumption of CNPs in contact with Si On the contrary, when the CNP density is high, the excess of nanoparticles reorganise into self-assembled carbon nanotubes ... analysed ex situ by SEM (Jeol 5400, resolution of nm with an accelerating voltage of 30 kV) and SPEM The SPEM measurements were carried out with the experimental station of the ESCA Microscopy ... scanning the sample with respect to the focused beam collecting simultaneously photoelectrons emitted from a selected elemental core level All experiments reported here were carried out with a photon...
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Preparation and photoluminescence of high density siox nanowires with fe3o4 nanoparticles catalyst
... (F4500, HITACHI corp.) with a resolution of 1.0 nm Results and discussion Fig 1(a) shows TEM image of Fe3O4 nanoparticles It can be seen that the monodisperse Fe3O4 nanoparticles with diameter about ... Corp.) with energy-dispersive X-ray spectroscopy (EDS) was used for morphological observation and element composition analysis of SiOx nanowires X-ray diffraction (XRD) (D/Max-2400, Rigaku Corp.) with ... structure of Fe3O4 nanoparticles Transmission electron microscopy (TEM) (Tecnai-20, PHILIPS Corp.) and high-resolution transmission electron microscopy (HRTEM) (Tecnai F20, FEI Corp.) with electron...
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Báo cáo hóa học: " Noxious gas detection using carbon nanotubes with Pd nanoparticles" ppt
... 1:3) were functionalized with carbon nanotubes (1 mg), which were added to an acetone/H2O (2:1/v:v) solution (15 ml), and ultrasonicated for 30 For synthesizing the CNT-Pd with an ethylenediaminetetraacetic ... Electrical contacts with the reduced CNT-Pd were created on evaporated nm Cr/50 nm Au electrodes For gas-sensing experiments, the reduced CNT-Pd was mounted in a small chamber with an electrical ... behaviors: the resistance decreased very slightly with exposure of CO in the vacuum, even though previous reports suggest that CO does not react with bare SWNTs [33] Carboxylic acid group and defect...
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Báo cáo hóa học: "An antibacterial coating based on a polymer/solgel hybrid matrix loaded with silver nanoparticles" pdf
... http://www.nanoscalereslett.com/content/6/1/305 with DMAB, the amount of silver nanoparticles is significantly lower When the same loading/reduction protocol was carried out with TEOS only coatings (without polyelectrolyte) ... coating with different number of loading/reduction Figure UV-VIS absorption UV-VIS absorption spectra of the coating film with different PAA concentration Figure EDX image EDX image of the coating with ... containing uniformly distributed silver nanoparticles inside the coating To our knowledge, this is the first time that TEOS/PAA hybrid matrices loaded with silver nanoparticles are fabricated In addition,...
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Báo cáo hóa học: " The molecular dynamic simulation on impact and friction characters of nanofluids with many nanoparticles system" pot
... translation velocity of nanoparticles in upper layer is 55 m/s and that of nanoparticles in lower layer is 32 m/s; the velocity of nanoparticles in lower layer is much lower than that of nanoparticles ... the nanoparticles have drastic rotation But with the compression process penetrating deeply, the rotation of nanoparticles is inhibited, and the reason might be that the interactions between nanoparticles ... agglomeration, and with the increase of pressure, the agglomeration effect of nanoparticles is different, which shows that with higher pressure, the more obvious the agglomeration effect is And the nanoparticles...
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Báo cáo hóa học: " On the Enhanced Antibacterial Activity of Antibiotics Mixed with Gold Nanoparticles" pot
... did not differ within the limits of error from that in an NP-free medium The main result of this experiment is that curves and for bacterial cells grown with free gentamicin and with a gentamicin–NP ... stabilized with hyperbranched poly(amidoamine), containing terminal dimethylamine groups [44] It should be emphasized that in the above-cited studies [37, 40, 41], the authors used NPs functionalized with ... Antibiotic addition to an NP suspension leads to NP aggregation, readily detectable with extinction spectra and with TEM images The question now arises, can particle aggregates diffuse into agar...
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Protein and cell micropatterning and its integration with micro nanoparticles assembly
... polystyrene nanoparticles and its bioapplications Colloids and Surfaces B: Biointerfaces 46(4):255-260 Yap FL, Zhang, Y 2007 Protein and Cell Micropatterning and its Integration with Micro / Nanoparticles ... was carried out by treatment with hot piranha solution (30 % hydrogen peroxide with 98 % sulphuric acid in ratio 1:4 v/v) at 100°C for 10 The mixture should be used with extreme caution due to ... clean (30% hydrogen peroxide with 98% sulfuric acid in a ratio of 1:4 v/v) at 100 °C for 10 The wafer was then rinsed with copious amount of deionized water, dried with nitrogen stream and dehydrated...
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Effect of multi walled carbon nanotubes loaded with ag nanoparticles on the
... photoelectrochemical measurements were performed with the PCI4/300 electrochemistry station (Gamry, USA) in a conventional three-electrode cell with a quartz window, using a saturated calomel ... Gournis, V Tzitzios, L Pasquato, D.M Guldi, M Prato, Decorating carbon nanotubes with metal or semiconductor nanoparticles, J Mater Chem 17 (2007) 2679–2694 [6] M.A Correa-Duarte, L.M Liz-Marzan, ... Chen, R.J Young, J.V Macpherson, N.R Wilson, Single-walled carbon nanotube networks decorated with silver nanoparticles: a novel graded SERS substrate, J Phys Chem C 111 (2007) 16167–16173 [18] G.Q...
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Influence of Plasmonic Au Nanoparticles onthe Photoactivity of Fe2O3Electrodes forWater Splitting
... citrate-stabilized 15 nm nanoparticles (Supporting Information) Samples with Au nanoparticles were compared to Fe2O3-only samples as controls Methods and Materials Au nanoparticles were synthesized ... between the electrode with Au nanoparticles and the Fe2O3-only control The IPCE for the surface configuration revealed a larger difference between the electrode with Au nanoparticles than was ... electrode because the plasmonic response of the metal scales with volume This allows the electronic effects of the metal nanoparticles on the semiconductor to be examined without significantly...
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A Plasmonic Photocatalyst Consisting of Silver NanoparticlesEmbedded in Titanium Dioxide
... photocatalytic activity with thick TiO2 This is also a motivation for our work Our present research forms a fourth approach, namely plasmonic photocatalysis The idea of plasmonic photocatalysis ... semiconductor with a band gap of 3.26 eV,12 so near UV irradiation can excite pairs of electrons and holes Ag NPs show a very intense LSP absorption band in the near-UV region.13 This is associated with ... NPs have to be coated with a passive material, such as SiO2, to separate them from TiO2 However, as the near-field amplitude decays in a rough estimation exponentially with the distance from...
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Synthesis of large scale sic–sio2 nanowires decorated with amorphous carbon nanoparticles and raman and PL properties
... decorated with carbon nanoparticles has same origin with that reported by Ishikawa et al At the end, we briefly discuss the synthesis process of SiC–SiO2 nanowires decorated with carbon nanoparticles ... of the SiC–SiO2 nanowires decorated with carbon nanoparticles In XRD pattern, five peaks indexed with (1 1), (2 0), (2 0), (3 1), and (2 2) are consistent with the standard face-centered cubic ... SiC–SiO2 core–shell nanowires decorated with carbon nanoparticles have been synthesized using thermal decomposition of ethanol The existence of carbon nanoparticles induced strong carbon-related...
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high efficiency excitation of plasmonic waveguides with vertically integrated resonant bowtie apertures
... locally exciting nanoscale plasmonic waveguides with the use of nanoscale bowtie apertures Our approach achieves a high coupling efficiency between optical far field and plasmonic waveguide High ... coupling between far field optical source and plasmonic waveguide Figure shows a schematic of the geometry for coupling between optical far filed and plasmonic waveguide, which consists of four ... consideration of fabrication feasibility.) With the proper selection of dimensions, the field emerging in the dielectric spacer layer will efficiently couple to the plasmonic waveguide The principal advantage...
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Báo cáo toán học: " Metal work-function-dependent barrier height of Ni contacts with metal-embedded nanoparticles to 4H-SiC" doc
... of Ni contacts with embedded nanoparticles on SiC (a) Ni/SiC contacts without NPs (Ref), (b) Ni/SiC contacts embedded with the Au-NPs (NP-1), and (c) Ni/SiC contacts embedded with the Ag-NPs ... embedded with the metal NPs to the 4H-SiC substrate Figure shows the fabricated samples with metal NPs: Ni/SiC contacts embedded with the Au-NPs (NP-1) and Ni/SiC contacts embedded with the Ag-NPs ... height of the fabricated SiC diode structures (Ni with embedded Ag-NPs) has significantly reduced by 0.11 eV and 0.18 eV with respect to the samples with Au-NPs and the reference samples, respectively...
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Báo cáo hóa học: " Highly sensitive hydrogen sensor based on graphite-InP or graphite-GaN Schottky barrier with electrophoretically deposited Pd nanoparticles Karel Zdansky" pdf
... various gas blends H2/N2 and air The measurements started with the flow of air which showed virtually no change of current in comparison with that without the Zdansky Nanoscale Research Letters 2011, ... deposition with Pd nanoparticles IEEE Electron Device Lett 2005, 26:62 Chiu SY, Huang HW, Liang KC, Huang TH, Liu KP, Tsai JH, Lour WS: High sensing response Pd/GaN hydrogen sensors with a porous-like ... of these structures Experimental Colloid solutions of Pd nanoparticles (NPs) in isooctane were prepared by reverse micelle technique with surfactant of sodium bis-(2-ethylhexyl) sulfoccinate...
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Báo cáo hóa học: " Plasmonic propagations distances for interferometric surface plasmon resonance biosensing" ppt
... 4.69 ± 0.02 μm for the 0.5 Å/s layer (with εAu = -29.1032 + 2.5736i) to 5.22 ± 0.02 μm for the Å/s (with ε Au = -31.2071 + 3.5632i), a 10% increase The film with a larger dielectric constant, despite ... backward (-) propagating SPs are coupling Thus, SP1 + can couple with SP1- at kG = 2|kSP1|/n, SP2+ with SP2- at kG = 2|kSP2|/n and SP1+/- with SP2-/+ at kG = (|kSP1| + |kSP2|)/n, where n is the diffraction ... case would consists of sputtered SiO with a 0.2 Å/s deposition rate, yielding a 55 Å surface roughness while the best case scenario, made of a PECVD SiO2 layer with a Au layer evaporated at 1.5...
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Báo cáo hóa học: " Intermatrix synthesis: easy technique permitting preparation of polymer-stabilized nanoparticles with desired composition and structure" ppt
... electrodes; INPs: inorganic nanoparticles; IMS: intermatrix synthesis; MNPs: metal NPs; NPs: NanoParticles; PSINPs: polymer-stabilized INPs; PSNPs: polymer-stabilized nanoparticles; SEM: scanning ... (converted back into the initial ionic form), undertaking consecutive cycles with another metals will result in the formation of MNPs with different structures (e.g bi-metallic core-shell, tri-metallic ... sensors modified with CuS-NPs decreases after the treatment in the buffer solution However, the decrease of sensitivity in this case is far lower than that of sensors modified with Cu0NPs after...
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báo cáo hóa học:" Stabilization of mid-sized silicon nanoparticles by functionalization with acrylic acid" pptx
... stable dispersions from small nanoparticles with sizes below nm [7], the same reaction routes not lead to stable dispersions with larger particles A surface coverage with acrylic acid molecules ... as-prepared nanoparticles (top), and acrylic acid-functionalized nanoparticles (bottom) with the appointed functional groups Figure XPS C 1s spectra of acrylic acid-functionalized nanoparticles ... particles with to nm in diameter and still showed worse functionalization efficiencies [12] These effects are attributed to changes in reaction chemistry, together with the observation that smaller nanoparticles...
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Báo cáo hóa học: "Size-Selected Ag Nanoparticles with Five-Fold Symmetry" potx
... 350 nm image of silver nanoparticles filter with 5.5 nm size selected and b profile of silver nanoparticles by AFM Fig HREM micrographs and corresponding FFT for silver nanoparticles: a 3.7 nm, ... conclusions Ag nanoparticles were synthesized by inert gas aggregation, with a high control in the size of the particles With the experimental conditions used in this work, we were able to produce nanoparticles ... consistent with what would be expected from quasispherical particles, such as icosahedra, in contrast with other particle shapes, cuboctahedra for example, that generate height profiles with pronounced...
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