A. Dhirani, M. A. Hines, A. Fisher
Jul 1, 1995
Citations
1
Influential Citations
52
Citations
Journal
Langmuir
Abstract
Self-assembly of decanethiol on Ag(111) is studied using ultrahigh impedance scanning tunneling microscopy. The surface frequently shows monatomic silver islands covering about 20% of the surface. Molecular domains with an average size of ∼70 A as well as the molecules themselves are also imaged. From these images, three important quantities regarding the molecular structure are determined : (1) the lattice constant is 4.61 ± 0.15 A ; (2) two sets of 6-fold lattice orientations separated by 20.7 ± 2.3° are observed ; (3) far from domain boundaries, height variations of nearest neighbors are less than 0.1 A. A model is proposed to explain how such a structure could have arisen.