Theoretical analysis and testing research of vibration isolation system for the scanning tunneling microscope

1993 ◽  
Author(s):  
Hong-Hai Zhang ◽  
Shang-Ping Li ◽  
Gui-Jing Sun ◽  
Hanming Shi ◽  
Ri-Yao Chen
Keyword(s):  
Theoretical Analysis ◽  
Scanning Tunneling Microscope ◽  
Vibration Isolation ◽  
Scanning Tunneling ◽  
Isolation System ◽  
Vibration Isolation System ◽  
Tunneling Microscope

The First Molecular Wheel: A Theoretical Investigation

2011 ◽  
Vol 1286 ◽  
Author(s):  
Gustavo Brunetto ◽  
Fernando Sato ◽  
Xavier Bouju ◽  
Douglas S. Galvao
Keyword(s):  
Molecular Dynamics ◽  
Theoretical Analysis ◽  
Scanning Tunneling Microscope ◽  
Copper Substrate ◽  
Spatial Separation ◽  
Rolling Process ◽  
Scanning Tunneling ◽  
Hydrocarbon Molecule ◽  
Tunneling Microscope ◽  
Molecular Dynamics Methods

ABSTRACTRecently, the first molecular nanowheel was synthesized and characterized from Scanning Tunneling Microscope (STM) experiments. It was demonstrated that a specifically designed hydrocarbon molecule (C44H24) could roll on a copper substrate along the [110] surface direction. In this work we report a preliminary theoretical analysis of the isolated molecule and of its rolling processes on different Cu surfaces. We have used ab initio and classical molecular dynamics methods. The simulations showed that the rolling mechanism is only possible for the [110] surface. In this case, the spatial separation among rows of copper atoms is enough to ‘trap’ the molecule and to create the necessary torque to roll it. Other surface orientations ([111] and [100]) are too smooth and cannot provide the necessary torque for the rolling process.

Vibration isolation analysis for a scanning tunneling microscope

1992 ◽  
Vol 63 (6) ◽  
pp. 3326-3329 ◽  
Author(s):  
A. I. Oliva ◽  
Victor Sosa ◽  
R. de Coss ◽  
Raquel Sosa ◽  
N. López Salazar ◽  
...  
Keyword(s):  
Scanning Tunneling Microscope ◽  
Vibration Isolation ◽  
Scanning Tunneling ◽  
Tunneling Microscope
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