scholarly journals Variations in the work function of doped single- and few-layer graphene assessed by Kelvin probe force microscopy and density functional theory

2011 ◽  
Vol 83 (23) ◽  
Author(s):  
D. Ziegler ◽  
P. Gava ◽  
J. Güttinger ◽  
F. Molitor ◽  
L. Wirtz ◽  
...  
Keyword(s):  
Density Functional Theory ◽  
Work Function ◽  
Density Functional ◽  
Kelvin Probe Force Microscopy ◽  
Kelvin Probe ◽  
Functional Theory ◽  
Force Microscopy ◽  
Layer Graphene ◽  
Few Layer Graphene

scholarly journals Work function of few layer graphene covered nickel thin films measured with Kelvin probe force microscopy

2016 ◽  
Vol 108 (4) ◽  
pp. 041602 ◽  
Author(s):  
B. Eren ◽  
U. Gysin ◽  
L. Marot ◽  
Th. Glatzel ◽  
R. Steiner ◽  
...  
Keyword(s):  
Thin Films ◽  
Work Function ◽  
Kelvin Probe Force Microscopy ◽  
Kelvin Probe ◽  
Force Microscopy ◽  
Nickel Thin Films ◽  
Layer Graphene ◽  
Few Layer Graphene

scholarly journals Structurally Driven Environmental Degradation of Friction in MoS2 Films

2021 ◽  
Vol 69 (3) ◽  
Author(s):  
John F. Curry ◽  
Taisuke Ohta ◽  
Frank W. DelRio ◽  
Philip Mantos ◽  
Morgan R. Jones ◽  
...  
Keyword(s):  
Work Function ◽  
Density Functional ◽  
Surface Film ◽  
Kelvin Probe ◽  
Photoelectron Emission ◽  
Friction Behavior ◽  
Functional Theory ◽  
Contact Conditions ◽  
Force Microscopy ◽  
Dynamics Simulations

AbstractWe report an investigation of the friction mechanisms of MoS2 thin films under changing environments and contact conditions using a variety of computational and experimental techniques. Molecular dynamics simulations were used to study the effects of water and molecular oxygen on friction and bonding of MoS2 lamellae during initial sliding. Characterization via photoelectron emission microscopy (PEEM) and Kelvin probe force microscopy (KPFM) were used to determine work function changes in shear modified material within the top few nanometers of MoS2 wear scars. The work function was shown to change with contact conditions and environment, and shown by density functional theory (DFT) calculations and literature reports to be correlated with lamellae size and thickness of the basally oriented surface layer. Results from nanoscale simulations and macroscale experiments suggest that the evolution of the friction behavior of MoS2 is linked primarily to the formation or inhibition of a basally oriented, molecularly thin surface film with long-range order.

scholarly journals Work function difference of naphthyl end-capped oligothiophene in different crystal alignments studied by Kelvin probe force microscopy

2020 ◽  
pp. 106060
Author(s):  
Mads Nibe Larsen ◽  
Mads Svanborg Peters ◽  
Rodrigo Lemos-Silva ◽  
Demetrio A. Da Silva Filho ◽  
Bjarke Jørgensen ◽  
...  
Keyword(s):  
Work Function ◽  
Kelvin Probe Force Microscopy ◽  
Kelvin Probe ◽  
Force Microscopy ◽  
Work Function Difference ◽  
Function Difference
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