Nanoindentation of Graphene/Phospholipid Nanocomposite: A Molecular Dynamics Study.
Vladislav V ShunaevOlga E GlukhovaPublished in: Molecules (Basel, Switzerland) (2021)
Graphene and phospholipids are widely used in biosensing and drug delivery. This paper studies the mechanical and electronic properties of a composite based on two graphene flakes and dipalmitoylphosphatidylcholine (DPPC) phospholipid molecules located between them via combination of various mathematical modeling methods. Molecular dynamics simulation showed that an adhesion between bilayer graphene and DPCC increases during nanoindentation of the composite by a carbon nanotube (CNT). Herewith, the DPPC molecule located under a nanotip takes the form of graphene and is not destroyed. By the Mulliken procedure, it was shown that the phospholipid molecules act as a "buffer" of charge between two graphene sheets and CNT. The highest values of electron transfer in the graphene/DPPC system were observed at the lower indentation point, when the deflection reached its maximum value.
Keyphrases
- carbon nanotubes
- molecular dynamics
- room temperature
- molecular dynamics simulations
- drug delivery
- walled carbon nanotubes
- fatty acid
- escherichia coli
- cystic fibrosis
- density functional theory
- cancer therapy
- minimally invasive
- reduced graphene oxide
- highly efficient
- atomic force microscopy
- solid phase extraction
- cell adhesion