Area confined position control of molecular aggregates. (6th May 2016)

• Record Type: Journal Article
• Authors: Wang, Hong; Buller, Oleg; Wang, Wenchong; Heuer, Andreas; Zhang, Deqing; Fuchs, Harald; Chi, Lifeng
• Is Part Of: New journal of physics. Volume 18:Number 5(2016:May)
• Publication Date: 2016-05-06
• Subjects: surface diffusion -- aggregate -- nucleation -- organic molecules; Physics -- Periodicals; Physics; Periodicals; 530.05
• DOI: 10.1088/1367-2630/18/5/053006
• Languages: English
• ISSNs: 1367-2630

Abstract

Abstract: We report an experimental approach to control the position of molecular aggregates on surfaces by vacuum deposition. The control is accomplished by regulating the molecular density on the surface in a confined area. The diffusing molecules are concentrated at the centre of the confined area, producing a stable cluster when reaching the critical density for nucleation. Mechanistic aspects of that control are obtained from kinetic Monte Carlo simulations. The dimensions of the position can further be controlled by varying the beam flux and the substrate temperature.