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The resonance tunneling process in the scanning tunneling microscope with carbon nanotube as a tip
Other Title(s)
عملية النفق الرنيني في المجهر النفقي الماسح مع أنبوب كاربون نانوي كرأس مجس
Joint Authors
Bandar, Ala Khalid
al-Mukh, Janan Majid
Source
Journal of Basrah Researches : Sciences
Issue
Vol. 44, Issue 1A (31 Mar. 2018), pp.76-95, 20 p.
Publisher
University of Basrah College of Education for Pure Sciences
Publication Date
2018-03-31
Country of Publication
Iraq
No. of Pages
20
Main Subjects
Topics
Abstract EN
In our work we present an integrated calculation model to investigate the possibility of using carbon nanotubes as a tip for the scanning tunneling microscope.
Our model takes into consideration the electronic properties of the substrate and tip that fabricated by using carbon nanomaterials .
since we calculated the hybridization function and the quantum shift(as well as the assistant function) due to coupling between the molecule and the tip and the substrate .
This calculation are utilized to calculate the local density of states on the molecule .
We firstly studied the effect of all the properties of the carbon nanotube tip , since different carbon nanotubes chiral and achiral , metallic and semiconductor with different diameters are considered .
Also , we calculated the transport properties for the used system (substrate - molecule – carbon nanotube tip) , these calculations can be considered as an additional step to enhance our results .
We conclude that the carbon nanotube tip is not suitable for investigation in the most cases ,since that depends on the molecule effective energy level position with respect to the Van Hove (V.H) singularities in the electronic density of states of the carbon nanotube .
And as the normal distance between the tip and the molecule is one of the most important experimental parameters that enhance the process of investigation , the effect of the tip distance on the process of investigation is studied for the carbon nanotube (12,0) .
According to our calculations , it's concluded that it is possible to get the exact density of states by controlling the distance which is a function of the molecule effective energy level position
American Psychological Association (APA)
Bandar, Ala Khalid& al-Mukh, Janan Majid. 2018. The resonance tunneling process in the scanning tunneling microscope with carbon nanotube as a tip. Journal of Basrah Researches : Sciences،Vol. 44, no. 1A, pp.76-95.
https://search.emarefa.net/detail/BIM-903004
Modern Language Association (MLA)
Bandar, Ala Khalid& al-Mukh, Janan Majid. The resonance tunneling process in the scanning tunneling microscope with carbon nanotube as a tip. Journal of Basrah Researches : Sciences Vol. 44, no. 1A (2018), pp.76-95.
https://search.emarefa.net/detail/BIM-903004
American Medical Association (AMA)
Bandar, Ala Khalid& al-Mukh, Janan Majid. The resonance tunneling process in the scanning tunneling microscope with carbon nanotube as a tip. Journal of Basrah Researches : Sciences. 2018. Vol. 44, no. 1A, pp.76-95.
https://search.emarefa.net/detail/BIM-903004
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references : p. 93-94
Record ID
BIM-903004