nucleateˈnu kli ɪt, -ˌeɪt, ˈnyu-; -ˌeɪt
nucleate
English Definitions:
nucleated, nucleate (verb)
having a nucleus or occurring in the nucleus
"nucleated cells"
nucleate (verb)
form into a nucleus
"Some cells had nucleated"
nucleate (Noun)
Any salt of a nucleic acid.
nucleate (Verb)
To form (into) a nucleus, or to act as a nucleus
nucleate (Adjective)
Having a nucleus; nucleated
nucleate
In thermodynamics, nucleation is the first step in the formation of either a new thermodynamic phase or structure via self-assembly or self-organization within a substance or mixture. Nucleation is typically defined to be the process that determines how long an observer has to wait before the new phase or self-organized structure appears. For example, if a volume of water is cooled (at atmospheric pressure) below 0 °C, it will tend to freeze into ice, but volumes of water cooled only a few degrees below 0 °C often stay completely free of ice for long periods (supercooling). At these conditions, nucleation of ice is either slow or does not occur at all. However, at lower temperatures nucleation is fast, and ice crystals appear after little or no delay.Nucleation is a common mechanism which generates first-order phase transitions, and it is the start of the process of forming a new thermodynamic phase. In contrast, new phases at continuous phase transitions start to form immediately. Nucleation is often very sensitive to impurities in the system. These impurities may be too small to be seen by the naked eye, but still can control the rate of nucleation. Because of this, it is often important to distinguish between heterogeneous nucleation and homogeneous nucleation. Heterogeneous nucleation occurs at nucleation sites on surfaces in the system. Homogeneous nucleation occurs away from a surface.
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"nucleate." Kamus.net. STANDS4 LLC, 2024. Web. 25 Apr. 2024. <https://www.kamus.net/english/nucleate>.
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