Results 251 to 260 of about 456,016 (297)

Coarsening of non-spherical particles

Journal of Crystal Growth, 1989
Abstract In this paper we analyze the coarsening of a diffuse collection of non-spherical particles. The only restriction on the particles' shapes is that each one remains in its original “shape class”. Linearized Gibbs-Thomson boundary conditions are used, and it is assumed that the particles coarsen through a quasi-static process.
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Melting of non-spherical ultrafine particles

Zeitschrift für Physik D Atoms, Molecules and Clusters, 1991
The behaviour of lead particles, with size up to 100 nm, embedded in a SiO matrix have been investigated versus temperature by dark field electron microscopy. When the particle is not spherical, it is shown that the melting process initiates on the surface regions of the particle where curvature is maximum.
R. Kofman, P. Cheyssac, R. Garrigos, Y. Lereah, G. Deutscher   +4 more
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Direct simulations of dense suspensions of non-spherical particles

International Journal of Multiphase Flow, 2011
We describe the direct simulation of high-solids-fraction suspensions of non-spherical rigid particles that are slightly denser than the fluid. The lattice-Boltzmann method is used to solve the flow of the interstitial Newtonian fluid, and the immersed boundary method is used to enforce a no-slip boundary condition at the surface of each particle.
Orest Shardt, Jos Derksen
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Non-spherical particles for optical trap assisted nanopatterning

Nanotechnology, 2013
Optical trap assisted nanopatterning is a laser direct-write technique that uses an optically trapped microsphere as a near-field objective. The type of feature that one can create with this technique depends on several factors, one of which is the shape of the microbead.
Y-C, Tsai, R, Fardel, M M, Panczyk, E M, Furst, C B, Arnold   +4 more
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Scattering by Particles of Non-Spherical Shape

1980
The scattering of particles deviating more or less from spherical shape is discussed based on microwave scattering measurements. To point out the differences between spheres and extremely irregular particles, fluffy structures will be of primary interest in this paper.
R. H. Zerull, R. H. Giese, S. Schwill, K. Weiss   +3 more
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The compaction of aggregates of non-spherical linear viscous particles

Computer Methods in Applied Mechanics and Engineering, 2003
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Wu, Yu Ching, Thompson, Erik G., Heyliger, Paul R.   +2 more
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Fabrication and Characterization of Non-spherical Polymeric Particles

Journal of Pharmaceutical Innovation, 2020
The particle shape is a key factor influencing drug loading, drug release, cellular interaction, cell uptake, and in vivo distribution of micro- and nanoparticles. The purpose of the study was to develop a preliminary proof of concept about the fabrication of non-spherical particles from spherical nanoparticles by simple film stretching method.
Ajinkya Patil, Sathish Dyawanapelly, Prajakta Dandekar, Ratnesh Jain   +3 more
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Impact of dust particle non‐sphericity on climate simulations

Quarterly Journal of the Royal Meteorological Society, 2012
AbstractAlthough mineral aerosol (dust) particles are irregular in shape, they are treated as homogeneous spheres in climate model radiative transfer calculations. Here, we test the effect of dust particle non‐sphericity in the ECHAM5.5‐HAM2 global aerosol–climate model.
P. Räisänen, P. Haapanala, C. E. Chung, M. Kahnert, R. Makkonen, J. Tonttila, T. Nousiainen   +6 more
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The effect of particle shape on the spouting properties of non-spherical particles

Powder Technology, 1991
The spouting properties of thirteen types of particles (twelve being agricultural seeds) were measured in a 150-mm diameter cylindrical column with a 60° conical base. The particles, with sphericities varying from 0.39 to 1 (one being 0.39, others being in the range of 0.66-1.0), were investigated to determine the effect of shape factor on the minimum ...
Liu L.X., Litster J.D.
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Light Scattering by Non-Spherical Particles

2016
Nicht-sphärische Teilchen sind in der Natur sowie in verfahrenstechnischen Anwendungen sehr häufig anzutreffen. Insbesondere die Detektion von Eiskristallen während des Fluges durch Verkehrsflugzeuge ist ein Problem, dass in den vergangenen Jahren vermehrt Aufmerksamkeit erhalten hat. Während das Problem der Streuung einer ebenen elektromagnetischen
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