Traceable size determination of nanoparticles, a comparison among European metrology institutes

Meli, Felix; Klein, Tobias; Buhr, E.; Frase, C. G.; Gleber, Gudrun; Krumrey, Michael; Duta, Alexandru; Duta, Steluta; Korpelainen, Virpi; Bellotti, Roberto; Picotto, Gian Bartolo; Boyd, Robert; Cuenat, Alexandre

doi:10.1088/0957-0233/23/12/125005

Cited by 92 publications

(94 citation statements)

References 34 publications

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“…For reference gold nanoparticles below 100 nm systematic deviations between the three sizing methods AFM, SMPS and TSEM were observed (see Figure 3). Similar deviations have been reported in the literature [6,7] and could not be resolved in the frame of the project. The JRP-Consortium therefore released the following recommendation on how to calibrate DMAs:…”

Section: Si-traceable Electric Mobility Diametersupporting

confidence: 75%

Measuring soot particles from automotive exhaust emissions

Andres

Lüönd

Schlatter

et al. 2014

EPJ Web of Conferences

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Abstract. The European Metrology Research Programme participating countries and the European Union jointly fund a three year project to address the need of the automotive industry for a metrological sound base for exhaust measurements. The collaborative work on particle emissions involves five European National Metrology Institutes, the Tampere University of Technology, the Joint Research Centre for Energy and Transport and the Leibniz Institute for Tropospheric Research. On one hand, a particle number and size standard for soot particles is aimed for. Eventually this will allow the partners to provide accurate and comparable calibrations of measurement instruments for the type approval of Euro 5b and Euro 6 vehicles. Calibration aerosols of combustion particles, silver and graphite proof partially suitable. Yet, a consensus choice together with instrument manufactures is pending as the aerosol choice considerably affects the number concentration measurement. Furthermore, the consortium issued consistent requirements for novel measuring instruments foreseen to replace today's opacimeters in regulatory periodic emission controls of soot and compared them with European legislative requirements. Four partners are conducting a metrological validation of prototype measurement instruments. The novel instruments base on light scattering, electrical, ionisation chamber and diffusion charging sensors and will be tested at low and high particle concentrations. Results shall allow manufacturers to further improve their instruments to comply with legal requirements.

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Section: Si-traceable Electric Mobility Diametersupporting

confidence: 75%

Measuring soot particles from automotive exhaust emissions

Andres

Lüönd

Schlatter

et al. 2014

EPJ Web of Conferences

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“…The size distribution of nanoparticle production batches is regarded as the key determinant in understanding their properties (e.g. optical, electrical and catalytic) [7] and the ability to measure this with high accuracy and precision using electron [8,9] and scanning probe [10]microscopies is now well established. However, other factors will also strongly affect their behaviour.…”

Section: Introductionmentioning

confidence: 99%

Double oxide shell layer formed on a metal nanoparticle as revealed by aberration corrected (scanning) transmission electron microscopy

Boyd¹,

Pilch²,

Garbrecht³

et al. 2014

Mater. Res. Express

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Abstract. Determination of the extent of oxidation in batches of metal nanoparticle is essential to predict the behaviour of the material. Using aberration corrected transmission electron microscopy (TEM) it was possible to detect the formation of an oxide shell, of thickness 3nm, on the surface of copper nanoparticles. Further analysis shows that this shell actually consists of two layers, both of which were polycrystalline in nature with domains in the size range of 1-2 nm, and having a thickness of 1.5 nm each. Energy dispersive X-ray spectroscopy confirms that the layers arise due to the formation of oxides, but it was not possible to determine their exact nature. Analysis of the intensity variation within images obtained via probe corrected scanning TEM combined with a high angle annular dark field detector indicates that the shell consists of an inner layer of cuprous oxide (Cu 2 O) and an outer layer of cupric oxide (CuO). This work was complemented by conventional TEM which provided size distribution and revealed that the majority of particles have a core consisting of a single crystal of copper. This demonstrates the ability of TEM to determine the extent of oxidation of nanoparticles and its potential to be applied to a wide range of homogenous and heterogeneous nanoparticles.

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“…of particle size, Duke 3100A ed by INRIM for their diameter n exercise [8] were employed. 97 ± 3 nm, a size distribution of dard deviation of 4.6%.…”

Section: Als and Methodsmentioning

confidence: 99%

Preliminary measurements of elasticity properties of lung tumor living cells for cancer detection

Demichelis

Divieto

Mortati

et al. 2015

2015 IEEE International Symposium on Medical Measurements and Applications (MeMeA) Proceedings

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Abstract-Lipids and lipoproteins concen plasma are directly correlated to the risk of diseases. Enumeration of certain classes of lip size, e.g. mean and modal diameter, wants t alternative of the traditionally used metho density. Traceable size measurement of cer were performed by AFM, obtaining resolution size measurement of spheres organized in line accuracy of the mean diameter measur measurement allowed to design the size distrib VLDL lipotroteins were imaged to perform measurement. A preliminary list of main unc given.

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Traceable size determination of nanoparticles, a comparison among European metrology institutes

Cited by 92 publications

References 34 publications

Measuring soot particles from automotive exhaust emissions

Measuring soot particles from automotive exhaust emissions

Double oxide shell layer formed on a metal nanoparticle as revealed by aberration corrected (scanning) transmission electron microscopy

Preliminary measurements of elasticity properties of lung tumor living cells for cancer detection

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