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Size and Size Distribution of Gold Nanoparticles by SAXS

Anton Paar

Size and Size Distribution of Gold Nanoparticles by SAXS

2 Nov 2015

Many materials gain their properties from the grain size of their constituting particles. Examples are the activity of catalysts and enzymes, the mechanical stability of ceramics and the thermal, electrical and optical properties of nanoparticles. Aggregate formation and imperfect redispersion may lead to an effective particle size in suspension much larger than the primary particle size. Coalescence is one of the main break-down processes in emulsions. This application note demonstrates the measurement of Gold nanoparticle dispersions by the SAXSpace system. SAXS proved to be a well-suited method for determining the size distribution of a binary mixture of two dispersions with very similar particle size.

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Modular System for Nanostructure Analysis: SAXSpace

Anton Paar

SAXSpace is a new nanostructure analyzer for small- and wide-angle X-ray scattering (SWAXS) studies of nanostructured materials. With its easy handling and push-button alignment, SAXSpace is ideally suited for routine SWAXS analysis and quality control applications. SAXS experts benefit from the spacious sample chamber and versatile sample stages, allowing for full experimental flexibility. This makes SAXSpace an ideal tool for investigating nanostructures in many different materials, including nanoparticles, biological macromolecules (Bio-SAXS), nanostructured surfaces (GI-SAXS), polymers and pharmaceuticals.

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NanotechnologyNanotechnology, or nanotech, is an engineering technique using molecular scale functional systems. Applications of nanotechnology include medicine and medical devices, electronics, air and water purification, food science and energy production.Particle CharacterizationParticle characterization instruments are used to determine particle size distribution, shape, surface area, zeta potential, density and porosity of particles and materials. Multiple tecchniques are available for determining particle size, shape and count including dynamic light scattering (DLS), laser diffraction, electrozone (Coulter technique), imaging particle analysis and single particle optical sensing. Determine the density of your material with a gas pycnometer or examine its surface area and porosity with gas adsorption analyzers and mercury porosimeters. Find the best particle characterization instruments in our peer-reviewed product directory: compare products, check customer reviews and receive pricing direct from manufacturers.Non-Destructive TechniquesNon-destructive techniques (NDT) describes a variety of analytical techniques used to evaluate the properties of a material. Common methods include ultrasonic, magnetic-particle, liquid penetrant, radiographic, remote visual inspection (RVI), and eddy-current testing. NDT is regularly used in forensic engineering, civil engineering, mechanical engineering, electrical engineering, systems engineering, aeronautical engineering, and medicine.AggregationCatalystEnzymesSAXSNanoparticlesNanoparticles are between 1-100nm in size. Nanoparticles can be used for a wide variety of applications including biomedical, catalysis and electronics.

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Size and Size Distribution of Gold Nanoparticles by SAXS