Surface Nucleation in the Freezing of Gold Nanoparticles

Mendez-Villuendas, Eduardo; Bowles, Richard K.

doi:10.1103/physrevlett.98.185503

Cited by 52 publications

(32 citation statements)

References 17 publications

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“…Thus ΔG * can be reduced by reducing the interfacial tension through the control of the pH, ionic strength or concentration of the solution [56][57][58][59].…”

Section: Theorymentioning

confidence: 99%

Annealing effect on the optical and solid state properties of cupric oxide thin films deposited using the Aqueous Chemical Growth (ACG) method

Mammah¹,

Opara²,

Omubo-Pepple³

et al. 2013

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Thin films of CuO having an average thickness of 720 nm were deposited on clean glass substrates using the Aqueous Chemical Growth (ACG) method with Cu(NO 3 ) 2 and C 6 H 12 N 4 as precursors and annealed at different temperatures in order to determine the effect of annealing temperature on their optical and solid state properties. The study was carried out using Rutherford Backscattering (RBS) spectroscopy for t thickness and chemical composition, X-Ray Diffraction (XRD) for crystallographic structure and a UV-VIS spectrophotometer for spectral analysis. The results indicate that the absorbance and absorption/extinction coefficient of the films vary inversely with annealing temperature while the transmittance, reflectance, direct band gap, real/imaginary dielectric constants and refractive index vary directly with annealing temperature. The results further indicate an improvement in crystallinity as annealing temperature increases. The as-deposited and annealed ACG CuO thin films were found to be suitable for use as window layer in solar cells among other electronic and optoelectronic applications.

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“…Thus ΔG * can be reduced by reducing the interfacial tension through the control of the pH, ionic strength or concentration of the solution [56][57][58][59].…”

Section: Theorymentioning

confidence: 99%

Annealing effect on the optical and solid state properties of cupric oxide thin films deposited using the Aqueous Chemical Growth (ACG) method

Mammah¹,

Opara²,

Omubo-Pepple³

et al. 2013

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“…In Ref. [8], the material system composed by gold-nano-particles/liquid/vapor may approach |γ| = 1.102 7. In Ref.…”

Section: Theoretical and Experimental Values Of Line Tensionsmentioning

confidence: 99%

“…1(a). The extended Young's equation of the contact angle, θ, considering the line tension, λ, takes the following form [8,18,29] : where γ LV , γ SL , and γ SV are the liquid-vapor, solid-liquid, and solid-vapor interfacial energies or tensions, respectively. R SL denotes the radius of the three-phase contacting circle between the droplet cap and the solid plane.…”

Section: Summary and Analysis Of Nonlinear Adhesion Equations Of Smalmentioning

confidence: 99%

“…For instance, the wetting and dewetting properties of liquid droplets are of great importance in various processes, such as dye mixtures, polymer melts, molten resins, ink-jet printings [6] , dislocation in crystal [7] , surface nucleation of nanoparticles [8] , soft lithography techniques [9−10] , micro-or nano-fluidics in chips [11] , "self-propelled" droplets on superhydrophobic surfaces [12] , droplets rolling down from lotus leaves or hanging from a spider's net, and so on. It is known that in adhesion problems of droplets, as the scales become small enough, the three-phase line tensions, date to Gibbs [13] , may become crucial.…”

Section: Introductionmentioning

confidence: 99%

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Nonlinear effects of line tension in adhesion of small droplets

Yin

Zheng

2008

Appl. Math. Mech.-Engl. Ed.

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Three-phase line tensions may become crucial in the adhesion of micro-nano or small droplets on solid planes. In this paper we study for the first time the nonlinear effects in adhesion spanning the full range of physically possible parameters of surface tension, line tension, and droplet size. It is shown that the nonlinear adhesion solution spaces can be characterized into four regions. Within each region the adhesion behaves essentially the same. Especially, inside the characteristic regions with violent nonlinearities, the co-existence of multiple adhesion states for given materials is disclosed. Besides, two common fixed points in the solution space are revealed. These new results are consistent with numerical analysis and experimental observations reported in the literatures.

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“…If water contamination in such amounts allows microbes to grow, especially upon storage, this may lead to affecting the engine components such as filters and pumps. At low temperatures \0°C, water may freeze, affecting the quality of biodiesel negatively, just like gelling and nucleation [4,5].…”

Section: Introductionmentioning

confidence: 99%

Rapid Method for the Determination of Moisture Content in Biodiesel Using FTIR Spectroscopy

Mirghani

Kabbashi

Alam

et al. 2011

J Americ Oil Chem Soc

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A new, rapid, and direct method was developed for the determination of moisture content in biodiesel produced from various types of oils using Fourier transform infrared (FTIR) spectroscopy with an attenuated total reflectance (ATR) element. Samples of biodiesels used in this study were produced using sludge palm oil (SPO). The calibration set was prepared by spiking double‐distilled water into dried biodiesel samples in ratios (w/w) between 0 and 10% moisture. Absorbance values from the wavelength regions 3,700–3,075 and 1,700–1,500 cm−1, and the partial least square (PLS) regression method were used to derive a FTIR spectroscopic calibration model for moisture content in biodiesel samples. The coefficient of determinations (R2) for the models was computed by comparing the results obtained from FTIR spectroscopy against the values of the moisture concentrations (%) determined using the American Oil Chemists’ Society (AOCS) oven method Ca 2d‐25. Same comparison was done using International Union of Pure and Applied Chemistry (IUPAC) distillation method 2.602. R2 was 0.9793 and 0.9700 using AOCS and IUPAC methods, respectively. The standard error (SE) of calibration was 1.84. The calibration model was cross validated within the same set of samples, and the standard deviation (SD) of the difference for repeatability (SDDr) and accuracy (SDDa) of the FTIR method was determined. With its speed and ease of data manipulation, FTIR spectroscopy is a useful alternative method to other methods for rapid and routine determination of moisture content in biodiesel for quality control.

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Surface Nucleation in the Freezing of Gold Nanoparticles

Cited by 52 publications

References 17 publications

Annealing effect on the optical and solid state properties of cupric oxide thin films deposited using the Aqueous Chemical Growth (ACG) method

Annealing effect on the optical and solid state properties of cupric oxide thin films deposited using the Aqueous Chemical Growth (ACG) method

Nonlinear effects of line tension in adhesion of small droplets

Rapid Method for the Determination of Moisture Content in Biodiesel Using FTIR Spectroscopy

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