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Understanding the Kinetics and Nanoscale Morphology of Electron‐Beam‐Induced Deposition via a Three‐Dimensional Monte Carlo Simulation: The Effects of the Precursor Molecule and the Deposited Material
Author(s) -
Smith Daryl A.,
Fowlkes Jason D.,
Rack Philip D.
Publication year - 2008
Publication title -
small
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.785
H-Index - 236
eISSN - 1613-6829
pISSN - 1613-6810
DOI - 10.1002/smll.200701133
Subject(s) - nanopillar , materials science , monte carlo method , electron , tungsten , deposition (geology) , kinetic monte carlo , cathode ray , silicon , molecular physics , morphology (biology) , secondary electrons , chemical physics , nanotechnology , nanostructure , chemistry , optoelectronics , physics , metallurgy , paleontology , statistics , mathematics , genetics , quantum mechanics , sediment , biology
Abstract The electron‐beam‐induced deposition of silicon oxide from tetraethyorthosilicate and tungsten from tungsten hexafluoride is simulated via a Monte Carlo simulation. Pseudo one‐dimensional nanopillars are grown using comparable electron‐beam parameters and a comparison of the vertical and lateral growth rate and the pillar morphology is correlated to the precursor and deposited material parameters. The primary and secondary electrons (type I) are found to dominate the vertical growth rate and the lateral growth rate is dominated by forward and secondary electrons (type II). The resolution and morphology of the nanopillars are affected by the effective electron interaction volume and the resultant surface coverage of the precursor species in the effective electron interaction region. Finally, the simulated results are compared to previously reported experimental results.