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Updated: Jun 4, 2026

Preparation of Carbon Nanosheets at Room Temperature

Preparation of Carbon Nanosheets at Room Temperature

Published on: March 8, 2016

Depletion at solid/liquid interfaces: flowing hexadecane on functionalized surfaces.

Philipp Gutfreund¹, Max Wolff, Marco Maccarini

¹Institut für Festkörperphysik, Ruhr-Universität Bochum, 44780 Bochum, Germany. gutfreund@ill.eu

The Journal of Chemical Physics

|February 17, 2011

Summary

This summary is machine-generated.

Neutron reflectivity reveals liquid hexadecane depletion at interfaces. Shear affects bare silicon but not functionalized surfaces, indicating density depletion does not cause surface slip in this system.

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Area of Science:

Surface science
Neutron scattering
Tribology

Background:

Hexadecane exhibits surface slip on functionalized surfaces.
Interfacial properties significantly influence liquid behavior at solid-liquid interfaces.

Purpose of the Study:

Investigate liquid hexadecane behavior at solid-liquid interfaces using neutron reflectivity.
Determine the relationship between interfacial structure, shear, and surface slip.

Main Methods:

Neutron reflectivity measurements on silicon substrates (bare and octadecyl-trichlorosilane coated).
In situ shearing of hexadecane under varying temperatures.
Analysis of reflectivity profiles to probe interfacial structure.

Main Results:

Observed density depletion of hexadecane at both bare and functionalized silicon interfaces.
Shear altered the depletion layer structure on bare silicon but not on octadecyl-trichlorosilane surfaces.
Increased temperature and interfacial energy reduced slip on octadecyl-trichlorosilane surfaces.

Conclusions:

Density depletion at the interface is not the cause of surface slip for hexadecane.
Interfacial energy and temperature play a role in modulating slip, contrary to expectations.
Findings challenge previous assumptions about the origin of surface slip in hexadecane systems.