Defects in alkylcyanobiphenyl molecular crystals studied by scanning tunneling microscopy
- 1 March 1991
- journal article
- research article
- Published by American Vacuum Society in Journal of Vacuum Science & Technology B: Microelectronics and Nanometer Structures
- Vol. 9 (2) , 1119-1125
- https://doi.org/10.1116/1.585229
Abstract
The ordering of alkylcyanobiphenyls liquid crystals grown on graphite and MoS2 is examined using scanning tunneling microscopy. The molecules are seen to form a rigid two-dimensional molecular lattice with properties similar to a crystalline solid. The molecular film is free of defects over distances of hundreds of nanometers. Monoatomic steps in the substrate and grain boundaries and screw dislocations in the adsorbate molecular lattice are observed. Both the ordering and the defects are successfully analyzed taking into account the registry of the molecules with the underlying substrate.This publication has 0 references indexed in Scilit: