Diffusivity of adatoms on plasma-exposed surfaces determined from the ionization energy approximation and ionic polarizability
Das Arulsamy, Andrew & Ostrikov, Kostya (2009) Diffusivity of adatoms on plasma-exposed surfaces determined from the ionization energy approximation and ionic polarizability. Physics Letters A, 373(26), pp. 2267-2272.
Microscopic surface diffusivity theory based on atomic ionization energy concept is developed to explain the variations of the atomic and displacement polarizations with respect to the surface diffusion activation energy of adatoms in the process of self-assembly of quantum dots on plasma-exposed surfaces. These polarizations are derived classically, while the atomic polarization is quantized to obtain the microscopic atomic polarizability. The surface diffusivity equation is derived as a function of the ionization energy. The results of this work can be used to fine-tune the delivery rates of different adatoms onto nanostructure growth surfaces and optimize the low-temperature plasma based nanoscale synthesis processes.
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|Item Type:||Journal Article|
|Keywords:||Activation energy, Atomic and displacement polarizabilities, Ionization energy, Plasma-based nanoassembly, Quantum dots, Surface diffusion|
|Divisions:||Current > QUT Faculties and Divisions > Science & Engineering Faculty|
|Deposited On:||15 Jul 2014 02:07|
|Last Modified:||16 Jul 2014 01:01|
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