The role of lateral surface corrugation for the quantum dynamics of dissociative adsorption and associative desorption

1995 ◽  
Vol 102 (12) ◽  
pp. 5045-5058 ◽  
Author(s):  
Axel Gross
Keyword(s):  
Lateral Surface ◽  
Quantum Dynamics ◽  
Dissociative Adsorption ◽  
Surface Corrugation

THE NOTHING THAT REALLY IS!

2016 ◽  
Vol 12 (1) ◽  
pp. 4172-4177
Author(s):  
Abdul Malek
Keyword(s):  
Quantum Dynamics ◽  
Theoretical Physics ◽  
Historical Evolution ◽  
Proper Understanding ◽  
Physical Universe ◽  
Wave Particle Duality ◽  
Negative Effect ◽  
Materialist Interpretation

The denial of the existence of contradiction is at the root of all idealism in epistemology and the cause for alienations.  This alienation has become a hindrance for the understanding of the nature and the historical evolution mathematics itself and its role as an instrument in the enquiry of the physical universe (1). A dialectical materialist approach incorporating  the role of the contradiction of the unity of the opposites, chance and necessity etc., can provide a proper understanding of the historical evolution of mathematics and  may ameliorate  the negative effect of the alienation in modern theoretical physics and cosmology. The dialectical view also offers a more plausible materialist interpretation of the bewildering wave-particle duality in quantum dynamics (2).

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

Role of parametric noise in nonintegrable quantum dynamics

1994 ◽  
Vol 49 (4) ◽  
pp. R2509-R2512 ◽  
Author(s):  
Rainer Scharf ◽  
Bala Sundaram
Keyword(s):  
Quantum Dynamics ◽  
Parametric Noise
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