Preparation of au ag alloy nanoparticles for surface enhanced raman scattering

REALIZATION OF PLASMONIC 2d 3d NANOSTRUCTURES FOR SURFACE ENHANCED RAMAN SCATTERING DETECTION

REALIZATION OF PLASMONIC 2d  3d NANOSTRUCTURES FOR SURFACE ENHANCED RAMAN SCATTERING DETECTION
... V Summary Raman scattering is an important method to obtain the vibrational spectroscopic information of molecules by their inelastic scattering with photons Surface enhanced Raman scattering ... dimension of surface nanostructures should be explored to enhance the intensity of SERS signals By developing the SERS substrates from 2D to 3D, the aspect ratio and surface area of the nanostructures ... In order to improve the Raman signal intensity, surface enhanced Raman scattering (SERS) has been widely investigated Using plasmonic nanostructures as the sensing platform, SERS techniques can...
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Báo cáo hóa học: " Fabrication and evolution of multilayer silver nanofilms for surface-enhanced Raman scattering sensing of arsenate" pdf

Báo cáo hóa học:
... Y: Surface-enhanced Raman scattering of biological molecules on metal colloid II: effects of aggregation of gold colloid and comparison of effects of pH of glycine solutions between gold and silver ... and evolution of multilayer silver nanofilms for surface-enhanced Raman scattering sensing of arsenate Nanoscale Research Letters 2011 6:263 Submit your manuscript to a journal and benefit from: ... X: Surface-enhanced Raman scattering for arsenate detection on multilayer silver nanofilms Anal Chim Acta 2011 doi:10.1186/1556-276X-6-263 Cite this article as: Hao et al.: Fabrication and evolution...
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synthesis and optical properties of au-ag alloy nanoclusters with controlled composition, p26

synthesis and optical properties of au-ag alloy nanoclusters with controlled composition, p26
... Biosynthesis of Bimetallic Au-Ag Alloy Nanoparticles”, Small, Vol 1, pp 517-520, 2005 [25 P Raveendran, J Fu, and S L Wallen, “A simple and green method for the synthesis of Au, Ag, and Au–Ag alloy ... Figure Calculated optical absorption spectra for Au-Ag bimetallic colloidal solutions with different molar ratios of Au and Ag Conclusions Au-Ag nanoclusters of solid-solution alloy type could ... spectra of the colloidal samples (prepared with second set of metal ion solutions) with nominal molar ratio a) Au/Ag = 1/1 and b) Au/Ag = 3/1 Calculated optical absorption spectra of the colloids with...
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Báo cáo hóa học: " Preparation of Pt Ag alloy nanoisland/graphene hybrid composites and its high stability and catalytic activity in methanol electro-oxidation" potx

Báo cáo hóa học:
... and AgPt alloy as the shell We use Au@PtmAgn to represent the samples, and m and n are percentage determined by EDX.) The selfassembly technology enables loading a lot of Au NRs and Au@AgPt alloy ... and discussion Characterization of Pt Ag alloy nanoisland/graphene hybrid composites Figure shows the SEM images of graphenes, EDX spectra of graphene oxide (GO), and graphene In the course of ... producing homogeneous high- loading nanorods on the surface of graphene The procedure of preparing graphene/Au@PtAg NRs hybrids was similar to that of graphene/Au NRs hybrids except for using Au@PtAg...
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Báo cáo hóa học: " Laser-Induced, Polarization Dependent Shape Transformation of Au/Ag Nanoparticles in Glass" docx

Báo cáo hóa học:
... lines of *1.5 mm length and 150 lm lateral distance have been inscribed in the glass at a velocity of 0.5 mm/s, corresponding to, on average, 200 laser pulses hitting each spot within the lines ... lines The polarization direction of the laser was parallel to the lines (writing direction) The effect of irradiating the sample in the described way with average single pulse energy of 20 lJ ... operating at 400 kV For this purpose, planar and cross-section preparation were applied including mechanical grinding, polishing and argon ion-beam etching followed by deposition of a thin carbon...
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Surface functionalization of superparamagnetic iron oxide nanoparticles for potential cell targeting, imaging, and cancer therapy applications

Surface functionalization of superparamagnetic iron oxide nanoparticles for potential cell targeting, imaging, and cancer therapy applications
...     SURFACE FUNCTIONALIZATION OF SUPERPARAMAGNETIC IRON OXIDE NANOPARTICLES FOR POTENTIAL CELL TARGETING, IMAGING, AND CANCER THERAPY APPLICATIONS HUANG CHAO (B.ENG., ... Objectives and Scopes The overall aim of this thesis is to develop various functional polymers as surface coatings of SPIONs for potential cell targeting, MRI, and cancer therapy applications ... nanomaterials, magnetic iron oxide nanoparticles are of intense current interest and have been successfully used for clinical applications, for example, molecular imaging Magnetic iron oxide nanoparticles...
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Semi-suspension technology for preparation of tetrabasic lead sulfate pastes for lead-acid batteries potx

Semi-suspension technology for preparation of tetrabasic lead sulfate pastes for lead-acid batteries potx
... structure of the 4BS pastes prepared using the semi-suspension technology Experimental 2.1 Method of paste preparation This paper treats the production of tetrabasic lead sulphate pastes The ... Initial capacity of batteries with positive pastes prepared by the semi-suspension technology using leady oxides with three different degrees of oxidation 3.1.3 Influence of the degree of leady oxide ... taken for XRD determination of its phase composition and SEM examination of the crystal morphology These pastes were then used for the preparation of plates and batteries (12 V/48 A h) The batteries...
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A method for 3d nano focusing of optical energy and its application to the surface enhanced raman spectroscopic study of protein 2

A method for 3d nano focusing of optical energy and its application to the surface enhanced raman spectroscopic study of protein 2
... and Christy’s previous publication (73), 117 4.4 Surface Plasmon Polariton Assisted Surface Enhanced Raman Scattering on Ultrasmooth Metal Surface The theory for an enhanced field near a metal ... distance of the center of the cavity to the surface is h The major and minor axis of the cavity are denoted ˆ as a and b respectively a y -axis is pointing perpendicularly out of the image plane ... from the surface rather than propagating away Inside the metal (i = 2) , on the other hand, k z of the SPP will v possess a negative imaginary part (see Eqn and 7), which suggests that the E2 field...
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A method for 3d nano focusing of optical energy and its application to the surface enhanced raman spectroscopic study of protein 1

A method for 3d nano focusing of optical energy and its application to the surface enhanced raman spectroscopic study of protein 1
... Theory of Enhanced Raman Scattering and its Experimental Verifications 2 .1 General Theory of Raman Scattering 13 2.2 Enhanced Raman Scattering 13 2.2 .1 Chemical Raman Enhancement 14 2.2.2 Electromagnetic ... Schematic diagram of SNOM system for phase measurements 17 0 17 1 Fig 15 A typical AFM and SNOM mappings of a 10 0-nm nano- cavity substrate with cavitysurface distance of (a and b) 10 nm, and (c and d) ... A Method for 3D Nano- focusing of Optical Energy and its Application to Surface Enhanced Raman Spectroscopic Study by Kiang Wei Kho SUBMITTED IN PARTIAL FULFILLMENT OF THE REQUIREMENTS FOR THE...
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Báo cáo hóa học: " Preparation of Ultrafine Fe–Pt Alloy and Au Nanoparticle Colloids by KrF Excimer Laser Solution Photolysis" docx

Báo cáo hóa học:
... and Au nanoparticles were prepared by KrF excimer laser solution photolysis TEM observations revealed that the Fe–Pt nanoparticles are composed of FCC A1 phase and are ultrafine with diameters of ... investigations are required to elucidate nanoparticle formation by UV laser solution photolysis of Fe and Pt complex solutions For applications of Fe–Pt nanoparticles, iron-rich concentrations ... mainly by the steric hinderance of PVP dispersant as described in the section ‘ Fe–Pt nanoparticles’’ As mentioned in the section ‘ Fe–Pt nanoparticles’’, Fe or Fe–Pt nanoparticle formation by UV laser...
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Báo cáo hóa học: " Studies on Preparation of Photosensitizer Loaded Magnetic Silica Nanoparticles and Their Anti-Tumor Effects for Targeting Photodynamic Therap" ppt

Báo cáo hóa học:
... effector of PDT Therefore, photosensitizer loaded silica nanoparticles are different from conventional delivery systems which need releasing of the loaded drug [9] Previous investigations of fluorescent -magnetic ... fluorescent -magnetic nanoparticles mainly focused on the MRI imaging and fluorescence imaging for diagnosis; however, there are few studies on the multifunctional magnetic targeting drug delivery system for ... high-energy magnetic fields In vitro and in vivo study of the epirubicin -magnetic fluid indicated biosafety and complete tumor response [10, 11], demonstrating the potential of magnetic targeting...
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Báo cáo hóa học: "Nanocrystal and surface alloy properties of bimetallic Gold-Platinum nanoparticles" pdf

Báo cáo hóa học:
... correlation of the Au-atop and Pt-atop CO bands on the surface of the alloy nanoparticles of a wide range of bimetallic composition with the electronic effect as a result of the d-band shift of Pt ... detection of redox waves corresponding to Au and Pt for AuPt alloy nanoparticles of different bimetallic composition on electrode surfaces demonstrated the presence of the bimetallic surface composition ... Scheme Distribution of Pt (grey) in Au atoms (orange) on the surfaces of an idealized bimetallic nanocrystal CO band by a Pt-atop site surrounded by Au atoms in the bimetallic alloy surface than that...
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báo cáo khoa học: "Cationic nanoparticles for delivery of amphotericin B: preparation, characterization and activity in vitro" potx

báo cáo khoa học:
... outstanding anti-infective properties [18] Both amphotericin B and miconazole self-assemble and solubilize at hydrophobic sites of DODAB or DHP bilayer fragments in water solution exhibiting in ... fungus viability For final coverage with polylysines (PL) of increasing molecular weight at mg/mL PL, there was an increase in the final zeta-potential modulus and a larger loss of viability (Table ... CMC/PDDA (C) and DODAB/ AmB/CMC/PDDA (D) interacted for h before dilution and plating on agar of 0.1 mL of the diluted mixture (1:1000 dilution) 1:10 either in IGP or in Milli-Q water yielding × 106...
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Surface modification of ferromagnetic nanoparticles for separation of toxic heavy metals and environmental applications

Surface modification of ferromagnetic nanoparticles for separation of toxic heavy metals and environmental applications
... SURFACE MODIFICATION OF FERROMAGNETIC NANOPARTICLES FOR SEPARATION OF TOXIC HEAVY METALS AND ENVIRONMENTAL APPLICATIONS ZAYED BIN ZAKIR SHAWON B.Sc (Chemical ... cost of separation of detrimental pollutants like heavy metals Recently, scientists have focused on the development of the nanomaterials as adsorbents for the separations of biomolecules, heavy metals, ... to remove toxic heavy metals from wastewater Ferromagnetic nanoparticles are superparamagnetic and offer very fascinating physical and chemical properties The adsorption capability of these nanoadsorbents...
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Surface modification of NaYF4 yb,er upconversion nanoparticles for bio application

Surface modification of NaYF4 yb,er upconversion nanoparticles for bio application
... Synthesis and characterization of NaYF4: Yb,Er UC nanoparticles and surface modification of UC nanoparticles by undoped NaYF4 shell coating (Chapter 3) Surface modification of UC nanoparticles by amino ... and NaYF4: Yb,Er nanoparticles in hexane 38 Figure 3.6 Energy level diagram of NaYF4: Yb,Er nanoparticles (versus vacuum) 38 Figure 3.7 XRD powder pattern of the NaYF4: Yb,Er / NaYF4 (core/shell) nanoparticles ... HRTEM image (inset) of the NaYF4: Yb,Er / NaYF4 (core/shell) nanoparticles 40 Figure 3.9 UC luminescence spectra of NaYF4: Yb,Er and NaYF4: Yb,Er / NaYF4 (core/shell) nanoparticles under...
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