Surfactant and Hydrocarbon Aggregates on Defective Graphite Surface: Structure and Dynamics

Maria Sammalkorpi, Mikko Karttunen, Mikko Haataja

Research output: Contribution to journalArticleScientificpeer-review


We have simulated the structure and aggregation kinetics of sodium dodecyl sulfate (SDS) and dodecane (C12) on a graphite surface in the presence of point and line defects. We find that while vacancies do not affect the orientational bias of the molecules, they interfere with aggregate formation. Specifically, they disrupt the formation of extended aggregates. Line defects in the form of surface steps, on the other hand, tend to localize the aggregates in their vicinity and induce specific orientations along the step edges. We demonstrate that this orientational bias can be tuned by manipulating the terrace widths. These results suggest that extended defects could be employed to localize and orient surfactant aggregates on the basal plane of graphite, thus providing a means to create patterned aggregate domains.
Original languageEnglish
Pages (from-to)12954–12961
JournalJournal of Physical Chemistry B
Publication statusPublished - 2008
MoE publication typeA1 Journal article-refereed


Dive into the research topics of 'Surfactant and Hydrocarbon Aggregates on Defective Graphite Surface: Structure and Dynamics'. Together they form a unique fingerprint.

Cite this