Results 31 to 40 of about 102,971 (296)

Formation of ice particles through nucleation in the mesosphere [PDF]

open access: yesAtmospheric Chemistry and Physics, 2022
Observations of polar mesospheric clouds have revealed the presence of solid ice particles in the upper mesosphere at high latitudes; however, their formation mechanism remains uncertain.
K. K. Tanaka, I. Mann, Y. Kimura
doaj   +1 more source

Heterogeneous Ice Nucleation by Graphene Nanoparticles [PDF]

open access: yesScientific Reports, 2020
AbstractNanostructure, chemical composition and size distribution of aerosols have prime important effects on their efficiency in heterogeneous ice nucleation (HIN). The ice nucleation usually requires active sites in the aerosols in order to act as ice nuclei (IN).
Joghataei, Mohammad   +3 more
openaire   +2 more sources

The QCD phase transition in the inhomogeneous Universe [PDF]

open access: yes, 2000
We investigate a new mechanism for the cosmological QCD phase transition: inhomogeneous nucleation. The primordial temperature fluctuations, measured to be $\delta T/T \sim 10^{-5}$, are larger than the tiny temperature interval, in which bubbles would ...
Ignatius, J., Schwarz, Dominik J.
core   +2 more sources

On the ice nucleation spectrum [PDF]

open access: yesAtmospheric Chemistry and Physics, 2012
This work presents a novel formulation of the ice nucleation spectrum, i.e. the function relating the ice crystal concentration to cloud formation conditions and aerosol properties.
D. Barahona
doaj   +1 more source

The Many Faces of Heterogeneous Ice Nucleation: Interplay Between Surface Morphology and Hydrophobicity [PDF]

open access: yes, 2015
What makes a material a good ice nucleating agent? Despite the importance of heterogeneous ice nucleation to a variety of fields, from cloud science to microbiology, major gaps in our understanding of this ubiquitous process still prevent us from ...
Cox, Stephen J   +3 more
core   +3 more sources

Heterogeneous formation of polar stratospheric clouds – Part 2: Nucleation of ice on synoptic scales [PDF]

open access: yesAtmospheric Chemistry and Physics, 2013
This paper provides compelling evidence for the importance of heterogeneous nucleation, likely on solid particles of meteoritic origin, and of small-scale temperature fluctuations, for the formation of ice particles in the Arctic stratosphere.
I. Engel   +7 more
doaj   +1 more source

On the transition between heterogeneous and homogeneous freezing [PDF]

open access: yesAtmospheric Chemistry and Physics, 2003
Box model simulations of an uplifting and adiabatically cooling cloud of aerosol have been performed in order to study the transition between cirrus formation dominated by homogeneous nucleation of ice to that dominated by heterogeneous nucleation. The
K. Gierens
doaj  

Manipulating Nucleation Potency of Substrates by Interfacial Segregation: An Overview

open access: yesMetals, 2022
During solidification of metallic materials, heterogeneous nucleation occurs on substrates, either endogenous or exogenous. The potency of the substrates for nucleation is mainly dependent upon the atomic arrangements on the substrate surface, which are ...
Yun Wang   +7 more
doaj   +1 more source

Heterogeneous nucleation of protein crystals on fluorinated layered silicate. [PDF]

open access: yesPLoS ONE, 2011
Here, we describe an improved system for protein crystallization based on heterogeneous nucleation using fluorinated layered silicate. In addition, we also investigated the mechanism of nucleation on the silicate surface.
Keita Ino   +12 more
doaj   +1 more source

Heterogeneous critical nucleation on a completely-wettable substrate

open access: yes, 2011
Heterogeneous nucleation of a new bulk phase on a flat substrate can be associated with the surface phase transition called wetting transition. When this bulk heterogeneous nucleation occurs on a completely-wettable flat substrate with a zero contact ...
Israelachvili J. N.   +2 more
core   +1 more source

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