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Nucleation means the creation of new particles, i.e. the creation of a new phase and associated interface. Hence, in order to understand the nucleation process, one needs to learn a few key ideas from physical chemistry. The energy of the interface is vital to the nucleation process, which in turn controls the nucleation rate. This chapter discusses both thermodynamics and kinetics. The thermodynamics of the interface provides the magnitude of the driving force and the kinetics provides the rate of nucleation. The homogeneous nucleation theory or classical nucleation theory is very popular among the scientific and technical community. To achieve homogeneous nucleation experimentally, the critical step is to remove all possible particles from the system which may lead to heterogeneous nucleation. The chapter shows that heterogeneous nucleation has a lower free energy barrier and hence happens long before homogeneous nucleation.
Nucleation means the creation of new particles, i.e. the creation of a new phase and associated interface. Hence, in order to understand the nucleation process, one needs to learn a few key ideas from physical chemistry. The energy of the interface is vital to the nucleation process, which in turn controls the nucleation rate. This chapter discusses both thermodynamics and kinetics. The thermodynamics of the interface provides the magnitude of the driving force and the kinetics provides the rate of nucleation. The homogeneous nucleation theory or classical nucleation theory is very popular among the scientific and technical community. To achieve homogeneous nucleation experimentally, the critical step is to remove all possible particles from the system which may lead to heterogeneous nucleation. The chapter shows that heterogeneous nucleation has a lower free energy barrier and hence happens long before homogeneous nucleation.
Nucleation
Chakraborty, Jayanta (author)
2019-07-30
33 pages
Article/Chapter (Book)
Electronic Resource
English
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