The role of surface corrugation in direct translationally activated dissociative adsorption

1994 ◽  
Vol 101 (6) ◽  
pp. 5329-5342 ◽  
Author(s):  
Li‐Qun Xia ◽  
J. R. Engstrom
Keyword(s):  
Dissociative Adsorption ◽  
Surface Corrugation

scholarly journals The role of surface corrugation and tip oscillation in single-molecule manipulation with a non-contact atomic force microscope

2014 ◽  
Vol 5 ◽  
pp. 202-209 ◽  
Author(s):  
Christian Wagner ◽  
Norman Fournier ◽  
F Stefan Tautz ◽  
Ruslan Temirov
Keyword(s):  
Frequency Shift ◽  
Single Molecule ◽  
Oscillation Amplitude ◽  
Surface Corrugation ◽  
Atomic Force ◽  
Data Points ◽  
Atomic Surface ◽  
Tetracarboxylic Dianhydride ◽  
Single Molecule Manipulation

Scanning probe microscopy (SPM) plays an important role in the investigation of molecular adsorption. The possibility to probe the molecule–surface interaction while tuning its strength through SPM tip-induced single-molecule manipulation has particularly promising potential to yield new insights. We recently reported experiments, in which 3,4,9,10-perylene-tetracarboxylic-dianhydride (PTCDA) molecules were lifted with a qPlus-sensor and analyzed these experiments by using force-field simulations. Irrespective of the good agreement between the experiment and those simulations, systematic inconsistencies remained that we attribute to effects omitted from the initial model. Here we develop a more realistic simulation of single-molecule manipulation by non-contact AFM that includes the atomic surface corrugation, the tip elasticity, and the tip oscillation amplitude. In short, we simulate a full tip oscillation cycle at each step of the manipulation process and calculate the frequency shift by solving the equation of motion of the tip. The new model correctly reproduces previously unexplained key features of the experiment, and facilitates a better understanding of the mechanics of single-molecular junctions. Our simulations reveal that the surface corrugation adds a positive frequency shift to the measurement that generates an apparent repulsive force. Furthermore, we demonstrate that the scatter observed in the experimental data points is related to the sliding of the molecule across the surface.

Role of Steps in the Dissociative Adsorption of Water on RutileTiO2(110)

2013 ◽  
Vol 110 (14) ◽  
Author(s):  
H. H. Kristoffersen ◽  
J. Ø. Hansen ◽  
U. Martinez ◽  
Y. Y. Wei ◽  
J. Matthiesen ◽  
...  
Keyword(s):  
Dissociative Adsorption ◽  
Adsorption Of Water

Role of Rotational Motion in the Dissociative Adsorption and Associative Desorption Dynamics ofD2/Cu(111)

1997 ◽  
Vol 78 (2) ◽  
pp. 286-289 ◽  
Author(s):  
Wilson Agerico Diño ◽  
Hideaki Kasai ◽  
Okiji Ayao
Keyword(s):  
Rotational Motion ◽  
Dissociative Adsorption

N2 dissociative adsorption on Ru(0001): The role of energy loss

2001 ◽  
Vol 115 (19) ◽  
pp. 9028-9035 ◽  
Author(s):  
L. Diekhöner ◽  
H. Mortensen ◽  
A. Baurichter ◽  
E. Jensen ◽  
V. V. Petrunin ◽  
...  
Keyword(s):  
Energy Loss ◽  
Dissociative Adsorption
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