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STM study of molecular order and defects in the layers of cycloalkanes (CH 2 ) 48 and (CH 2 ) 72 adsorbed on graphite
Author(s) -
Wawkuschewski Aleksander,
Cantow HansJoachim,
Magonov Sergei N.,
Möller Martin,
Liang Weigen,
Whangbo MyungHwan
Publication year - 1993
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.19930051107
Subject(s) - graphite , materials science , superstructure , orientation (vector space) , lamella (surface anatomy) , chemical physics , scanning tunneling microscope , adsorption , crystallography , interpretation (philosophy) , nanotechnology , molecular physics , chemistry , thermodynamics , geometry , physics , composite material , mathematics , computer science , programming language
Cycloalkanes adsorbed on graphite , unlike the normal alkanes considered in the preceding contribution, cannot undergo a tumbling motion and change their orientation with respect to the graphite surface. The orientation of the cycloalkanes as revealed by STM images is reported and lamella defects are identified. An answer is also given to the question of how many adlayers are seen by STM, which is very important in the interpretation of superstructure patterns.