Table 2 Absorption energy estimated on various substrates.

From: Carbon clusters on substrate surface for graphene growth- theoretical and experimental approach

Substrate

Position

Total energy

Absorption energy

Remarks

Substrate

Nano graphene

Supercell

Nano graphene

6-ring

SrTiO\(_{3}\)(001)

Sr atom

− 7321022.51

− 2397450.62

− 9719043.04

569.92

Bent

Slightly rotated

Ti atom

− 9719042.77

569.65

Bent

 

O atom

− 9719042.49

569.36

Bent

 

Al\(_{2}\)O3(001)

Al atom

− 89556972.78

− 91955383.64

949.56

  

O atom

− 91955383.64

960.25

 

Vertical standup

MgO(001)

Mg atom

− 23131793.52

− 25530067.18

823.03

Slightly bent

Vertical standup

O atom

− 25530069.13

824.99

Slightly bent

Lean on O atom

Si(001)

Si atom

− 14880041.41

− 148278044.88

552.85.

Hemisphere

Vertical standup

Interatomic

− 148278429.79

937.75

Hemisphere

Bent

Si(111)

Si atom

− 18234692.32

− 18833907.40

496.58

Distortion

Vertical standup

Interatomic

− 18834031.90

621.08

Distortion

Bent

  1. Total energy was calculated on individual substrate (E\(_{sub}\)) and 7 six membered ring (E\(_{graphene}\)), one six membered ring (E\(_{ring}\)), and combined system consisting of substrate and graphene, 7 six membered ring and six membered ring and one carbon atom. Absorption energy was estimated by subtracting of all individual materials and combined system.