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Graphene-Titanium Interfaces from Molecular Dynamics Simulations.

Alexandre F Fonseca¹, Tao Liang², Difan Zhang^2,3

¹Applied Physics Department, State University of Campinas , Campinas, São Paulo 13083-970, Brazil.

ACS Applied Materials & Interfaces

|September 5, 2017

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This study explores graphene-titanium (G-Ti) nanostructures using molecular dynamics. G-Ti interfaces are found to be thermally stable and suitable for electronic nanodevices.

Area of Science:

Materials Science
Condensed Matter Physics
Nanotechnology

Background:

Understanding graphene-metal contacts is crucial for advanced graphitic electronic nanodevices.
Limited research exists on the structure and behavior of large graphene-metal nanostructures.

Purpose of the Study:

To investigate the physical and chemical properties of graphene-titanium (G-Ti) interfaces.
To explore the behavior of G-Ti structures with varying titanium coverage, on different substrates, and at various temperatures.

Main Methods:

Classical molecular dynamics simulations were employed.
Equilibrium structures and dynamics of G-Ti interfaces were analyzed.
The influence of graphene vacancies and substrate electrostatics on Ti adhesion was studied.

Keywords:

COMB3 graphene−titanium interface molecular dynamics work of adhesion

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Main Results:

Titanium film adhesion on graphene is enhanced by graphene vacancies and substrate electrostatic effects.
Graphene-titanium interfaces exhibit thermal stability across different temperatures and substrate types.
No evidence of titanium carbide formation was observed, indicating interface stability.

Conclusions:

Graphene-titanium interfaces are robust and thermally stable, making them promising for electronic nanodevices.
Graphene properties like vacancies and substrate interactions significantly influence metal adhesion.
The findings provide foundational knowledge for designing next-generation graphitic electronics.