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nanoparticles and langmuir blodgett films

báo cáo hóa học:

báo cáo hóa học: " Structural and thermal studies of silver nanoparticles and electrical transport study of their thin films" pdf

Hóa học - Dầu khí

... collected and powdered finely, and identified as silver nanoparticles using characterization tools These silver nanoparticles have been re-dispersed in ethanol for the preparation of silver film The films ... order to clean the surface and to enhance its hydrophilicity; and then rinsed many times with deionized water and dried in air The morphology and crystal structure of silver nanoparticles powder has ... determine the intrinsic stress and dislocation density of silver nanoparticles and found to be as 0.275 GPa and 7.0 × -14 m-2 respectively Figure shows the FESEM image of silver nanoparticles It exhibits...
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Báo cáo hóa học:

Báo cáo hóa học: " Pd Nanoparticles and Thin Films for Room Temperature Hydrogen Sensor" potx

Hóa học - Dầu khí

... sulfate (0.04 mol/L) and sulfuric acid Figure b, c, and d for the nanoparticles grown at -1.0, -2.0 and -3.0 V, respectively We have discussed the variation of shapes of Pd nanoparticles in our ... controllers and record the gas concentration Results and Discussion Mechanism of electrochemical growth for the Pd nanoparticles has been studied using the voltammetry techniques and discussed ... in the band structure alteration and changing the work function on hydrogen exposure We have observed a systematic change in the work function on H2 exposure to the Pd nanoparticles and thin...
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Synthesis of large scale sic–sio2 nanowires decorated with amorphous carbon nanoparticles and raman and PL properties

Synthesis of large scale sic–sio2 nanowires decorated with amorphous carbon nanoparticles and raman and PL properties

Vật lý

... emission band and a new yellow band were observed from SiC–SiO2 core–shell nanowires decorated with carbon nanoparticles and considered to relate to the enhancement of oxygen deficiency and appearance ... observation D- and G-band were also appeared in spectrum (b) As can be seen in Fig 4, D- and G-band in spectrum (b) are different from those of spectrum (a) in position, width, and intensity ratio ... agreement with the results of XRD and TEM Two peaks centered at $1337 and $1592 cmÀ1 often called as D- and G-band, respectively confirm the existence of carbon [22–25] The D-band is known as to appear...
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preparation of wo3 nanoparticles and application to no2 sensor

preparation of wo3 nanoparticles and application to no2 sensor

Vật lý

... 3, and 10 kPa and annealed at 600 8C (b) WO3 nanoparticles deposited at kPa and annealed at 400 and 600 8C results for the sensors made of WO3 nanoparticles deposited at 1, 3, and 10 kPa and ... images of WO3 nanoparticles deposited at 1, 3, and 10 kPa, respectively, and annealed at 600 8C (d)–(f) FE-SEM images of WO3 nanoparticles deposited at kPa and annealed at 400, 600, and 800 8C, ... where Ra and Rg were the electrical resistances in air and in air including NO2, respectively Results and discussion Fig 2(a) shows XRD patterns for WO3 nanoparticles deposited at 1–10 kPa and annealed...
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Detection of breast cancer cells using targeted magnetic nanoparticles and ultra-sensitive magnetic field sensors potx

Detection of breast cancer cells using targeted magnetic nanoparticles and ultra-sensitive magnetic field sensors potx

Sức khỏe giới tính

... of SAO5 nanoparticles (a) SAO5 nanoparticles were imaged by transmission electron microscopy (inset) The diameters of approximately 1,000 nanoparticles were measured, and the mean and standard ... of Health Guide for the Care and Use of Laboratory Animals and approved by the Institutional Animal Care and Use Committee Results and discussion Characterization of nanoparticles demonstrated ... streptomycin (vol/vol), and μg/mL ciprofloxacin MCF7/Her2-18 and parental CHO cells were cultured in an incubator at 37°C with 5% CO2 and maintained at a cell concentration of between × 105 and × 10 viable...
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Nanocoating and ultra-thin films

Nanocoating and ultra-thin films

Vật lý

... Publishing Limited, 2011 28 Nanocoatings and ultra-thin films 2.1.4 Recent research related to Langmuir monolayers and Langmuir Blodgett (LB) While the Langmuir monolayer and the LB technique have been ... and ultra-thin films is both a reference and a tutorial for understanding the most common thin-films and coating techniques The book encompasses recent approaches and future trends in coating and ... from amphiphilic molecules J Y PARK and R C ADVINCULA, University of Houston, USA Abstract: Over the past several decades, the Langmuir monolayer and Langmuir Blodgett (LB) techniques have been...
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Báo cáo hóa học:

Báo cáo hóa học: " Facile method to synthesize magnetic iron oxides/TiO2 hybrid nanoparticles and their photodegradation application of methylene blue" pptx

Hóa học - Dầu khí

... NPs and the conduction band (or valence band) of TiO2 [64] Iron oxide NPs can increase energy spacing of the conduction band in TiO2 and finally lead to the quantization of energy levels and ... the FT-2 and FT-3 in solid and solution state At the presence of magnet (take from the MSS) Figure UV-vis absorbance spectrum and bandgap energy UV-vis absorbance spectrum (a) and bandgap energy ... Table Standard binding energy values Samplesa Fe 2p3/2 O 1s Si 2p N 1s Ti 2p3/2 399.5 Naked Fe3O4 nanoparticles 710.9 531.5 APTES-coated Fe3O4 nanoparticles 710.5 531.5 102.5 Hybrid nanoparticles...
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Báo cáo hóa học:

Báo cáo hóa học: " Core shell hybrids based on noble metal nanoparticles and conjugated polymers: synthesis and characterization" ppt

Hóa học - Dầu khí

... been recorded and it was found that as the time progresses the absorption bands for Au and Ag narrowed and shifted continuously to the shorter wavelength regions Purification of the nanoparticles ... defined and stable polymeric shell Figure a: UV-Vis absorption spectra of samples Au@P (DMPAHCl) and Ag@P(DMPAHCl) and b: Ag, Au and Pt core shell in water suspensions image (yellow, pink and grey, ... contributions IV, IF and MVR carried out the synthesis and characterizations and drafted the manuscript, CC light scattering characterizations, CB and GP carried out XPS studies All authors read and approved...
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Báo cáo hóa học:

Báo cáo hóa học: " Nanofluid bioconvection in water-based suspensions containing nanoparticles and oxytactic microorganisms: oscillatory instability" potx

Hóa học - Dầu khí

... Equations 1, 2, 6, 8, 10, and 14 are imposed as follows It is assumed that the temperature and the volumetric fraction of the nanoparticles are constant on the boundaries and the flux of microorganisms ... 8.0 × 105, and Rn = 2.3 × 103 The values of Ra and Rb can be controlled by changing the temperature difference between the plates and the microorganism concentration, respectively, and Rn depends ... some toxic compounds to inhibit the flagella movement and thus suppress bioconvection Also, preventing nanoparticles from agglomerating and aggregating remains a significant challenge One of...
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Báo cáo hóa học:

Báo cáo hóa học: " Silver Nanoparticles and Graphitic Carbon Through Thermal Decomposition of a Silver/Acetylenedicarboxylic Salt" ppt

Hóa học - Dầu khí

... antisymmetric and symmetric vibration modes of the carboxylate anion appear and are located at 1,551 and 1,342 cm-1, respectively The difference between the frequencies of these two bands is 209 ... at half maximum of the strongest peak and k is the X Ray ˚ wavelength (k = 1.5418 A), and it is roughly estimated to be about 30 nm and 20 nm for the Ag/pyr and Ag/sol sample, respectively, revealing ... presence of two broad bands without any pronounced peak, centered in 2h = 11° and 2h = 32° may be assigned to the glass support holder and the silver salt, respectively Since the band is significantly...
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Báo cáo hóa học:

Báo cáo hóa học: " Synergistic Effect of Functionalized Nickel Nanoparticles and Quercetin on Inhibition of the SMMC-7721 Cells Proliferation" potx

Hóa học - Dầu khí

... quercetin solution and cells exposed to Ni nanoparticles cocultured for h and e 50 lmol/L of quercetin solution and cells exposed to Ni nanoparticles incubated for h Here, C stands for SMMC-7721 ... lg/mL of Ni nanoparticles, and d SMMC-7721 cells treated with 50 lg/mL of Ni nanoparticles Bar 10 lm Fig AFM images for cell uptake of Ni nanoparticles a SMMC-7721 cell without Ni nanoparticles ... absence and presence of Ni nanoparticles The cellular fluorescence in the Ni nanoparticlestreated system (Fig 4b) is much higher than that with free of Ni nanoparticles (Fig 4a) Hence, these Ni nanoparticles...
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Báo cáo hóa học:

Báo cáo hóa học: " Gold Nanoparticles and Microwave Irradiation Inhibit Beta-Amyloid Amyloidogenesis" pot

Hóa học - Dầu khí

... introduced, and inside each vial a magnetic stirrer was introduced and the samples stirred for homogeneity Samples and controls were irradiated for 10 and 30 and then were centrifuged at 16,000g for and ... nM and 30 of irradiation (Figs and 3) Figure shows TEM micrographs of the sample Ab PIAA/AuNP-CLPFFD complex and controls before and after irradiation for 30 and further incubation (right), and ... temperature for 48 h, and the fibril formation was determined by ThT test and by TEM Incubation of Irradiated Samples and Controls for Fibril Formation The irradiated samples and controls and non-irradiated...
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Báo cáo hóa học:

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 khoa học

... mother liquor and (b) PHPP-SMNPs Fig UV spectra of (a) PHPP, (b) PHPP mixed with SMNPs, (c) PHPP dissolved in HCl and ethanol, (d) SMNPs dissolved in HCl and ethanol, and (e) SMNPs and PHPP dissolved ... morphology (Fig 1a) and the characteristic peaks (Fig 1b), which was compatible with the values of standard pattern In addition to the dispersed and well-separated features, the formed Fe3O4 nanoparticles ... image (a) and XRD pattern (b) of Fe3O4 nanoparticles 123 404 Nanoscale Res Lett (2009) 4:400–408 Fig Scheme depicting the synthesis and purification of (PHPP-Fe3O4/OA)/SiO2 Fig TEM image (a) and XRD...
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SURFACES Of NANOPARTICLES AND POROUS MATERIALS ppt

SURFACES Of NANOPARTICLES AND POROUS MATERIALS ppt

Cao đẳng - Đại học

... Revised and Expanded, edited by Christian Gloxhuber and Klaus Kunstler 44 Organized Solutions: Surfactants in Science and Technology, edited by Stig Friberg and Bjom Lindman 45 Defoaming: Theory and ... Measurements, and Applications, Second Edition, Revised and Expanded, edited by Hiroyuki and Kunio 77 Polymer-Surfactant Systems, edited by Jan T Kwak 78 Surfaces of Nanoparticles and Porous Materials, ... (1988) 11 and Unger, J Chhromatogr (1984) S P Emmett, and Teller, Am (1938) 13 P Barrett, Joyner, and P P Am (1951) 14 and De Boer, Catal (1965) and K Unger, Chromatogr (1984) 16 Brunauer, S and Teller,...
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báo cáo khoa học:

báo cáo khoa học: "A signal amplification assay for HSV type 1 viral DNA detection using nanoparticles and direct acoustic profiling" ppsx

Báo cáo khoa học

... compared using both NA and NA modified gold nanoparticles, and the effect of particle size on amplification efficiency was investigated by use of 15 nm, 40 nm and 60 nm gold nanoparticles The highest ... The Z-factor provides an easy and useful measure for assay quality and has been a widely accepted standard Z-factor reflects both the assay signal dynamic range and the data variation associated ... measurements; where a Z-factor between 0.5 and 1.0 is an excellent assay; between and 0.5 is marginal, and less than means that the signal from the positive and negative controls overlap, indicating...
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báo cáo khoa học:

báo cáo khoa học: " Manufacture of IRDye800CW-coupled Fe3O4 nanoparticles and their applications in cell labeling and in vivo imaging" ppt

Báo cáo khoa học

... nanoparticles The supernatant and nanoparticles were collected separately, and the nanoparticles were resuspended in deionized water The supernatants and the resuspended nanoparticles were detected ... label nanoparticles and study their biodistribution, clearance and biocompatibility for in vivo biomedical applications In a recent study, silica nanoparticles were labeled with DY776 and applied ... Biotechnology and Biomaterials, BME, Southeast University, Nanjing 210096, China Authors’ contributions YH, YL, ZC and NG synthesized nanoparticles; YL, YH and JW performed the cell labeling and the...
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báo cáo khoa học:

báo cáo khoa học: "Optimized labeling of bone marrow mesenchymal cells with superparamagnetic iron oxide nanoparticles and in vivo visualization by magnetic resonance imaging" ppsx

Báo cáo khoa học

... design, collection and assembly of data, performed the statistical analysis, interpretation and drafted the manuscript ALMT, HMPN and JAP assisted with collection and assembly of data and performed ... weekly and evaluated after 1, 7, 14 and 21 days of culture (B) The number of MSCs labeled after and 21 days of culture without trypsinization (C) Mitomycin-pretreated cells labeled with Feridex and ... analyzing liver pathology The nanoparticles are phagocytosed and accumulate in endosomes of Kupffer cells and reticuloendothelial cells [26] The particles are biodegradable and incorporated into hemoglobin...
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Báo cáo khoa hoc:

Báo cáo khoa hoc:" Rapid and specific influenza virus detection by functionalized magnetic nanoparticles and mass spectrometry" pdf

Báo cáo khoa học

... HA0 and are thus easily activated by trypsin and other proteases for systemic infection [1, 2] At present, four drugs are approved for influenza prophylaxis and treatment [3–5]: amantadine and ... gel electrophoresis (SDS-PAGE) and peptide mass sequencing using liquid chromatography–tandem mass spectrometry (LC–MS/MS) Results and Discussion • Preparation and characterization of ethyleneglycol-protected ... HA1 and HA2 After treatment with β-mercaptoethanol, an electrophoresis band occurring at ~45−50 kDa was attributable to the glycosylated HA1 protein (Fig 5A, lanes and 3) [25, 43–45] The band...
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Phương pháp tạo màng calcium alginate and calcium pectinate films

Phương pháp tạo màng calcium alginate and calcium pectinate films

Tổng hợp

... circumstances: thin films become very brittle, brittle and cracked films lead to ineffective barriers, and thin films are hard to cast uniformly The thin films created were uniform and reproducible ... alginate and calcium pectinate films The films were cut into 5cm X 5cm squares and ten micrometer measurements were performed and recorded An average micron thickness, standard deviation and relative ... alginate films and 19 to 20 (+/- 1) calcium pectinate films The to 6% relative standard deviation was considered acceptable for the present work The calcium alginate and calcium pectinate films...
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