Regensburg 2016 – scientific programme

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CPP: Fachverband Chemische Physik und Polymerphysik

CPP 41: Crystallization, Nucleation, Self Assembly II (joint session CPP/DY, organized by CPP)

CPP 41.7: Talk

Wednesday, March 9, 2016, 18:00–18:15, H42

Area confined nucleation and position control by vapor deposition — •Oleg Buller¹, Hong Wang², Wenchong Wang², Lifeng Chi², and Andreas Heuer¹ — ¹Institut für Physikalische Chemie, WWU, Münster — ²Physikalisches Institut and Center for Nanotechnology, WWU, Münster

Experimentally it is possible that after vapor deposition of organic molecules on surfaces, prepatterned with a regular gold grid, in basically each cell a single nucleus is formed (defects less than 2%) exactly in the center of each grid. This enormous nucleation and position control can be reproduced for different organic molecules. Via combination of kinetic Monte Carlo simulations and analytical calculations a theoretical explanation for this high quality is provided. In this way it is possible to understand, e.g. that the size of the grid and the external flux simultaneously have to be varied in order to stay in the regime of perfect nucleation and position control. A direct comparison between the experimental and theoretical results is presented.