scholarly journals Asymmetric Carbon Nanotube Dimers Embedded in a Dielectric Slab: New Plasmonic Resonance Behavior

2021 ◽  
Author(s):  
SUMITRA DEY ◽  
Deb Chatterjee ◽  
Edward Garboczi ◽  
Ahmed Hassan
Keyword(s):  
Carbon Nanotube ◽  
Dielectric Slab ◽  
Plasmonic Resonance ◽  
Resonance Behavior ◽  
Asymmetric Carbon

Response of asymmetric carbon nanotube network devices to sub-terahertz and terahertz radiation

2015 ◽  
Vol 118 (19) ◽  
pp. 194303 ◽  
Author(s):  
I. Gayduchenko ◽  
A. Kardakova ◽  
G. Fedorov ◽  
B. Voronov ◽  
M. Finkel ◽  
...  
Keyword(s):  
Carbon Nanotube ◽  
Terahertz Radiation ◽  
Carbon Nanotube Network ◽  
Asymmetric Carbon

Titanium Dioxide/Multi-Walled Carbon Nanotube Heterostructure Containing Single One Carbon Nanotube and Its Electromagnetic Properties

NANO ◽  
2015 ◽  
Vol 10 (07) ◽  
pp. 1550102 ◽  
Author(s):  
Xu Huang ◽  
Kun Jia ◽  
Xiaobo Liu
Keyword(s):  
Electron Microscope ◽  
Carbon Nanotube ◽  
Anatase Phase ◽  
Xrd Analysis ◽  
Electromagnetic Properties ◽  
X Ray ◽  
Broadband Absorption ◽  
Resonance Behavior ◽  
Transmission Electron ◽  
Multi Walled Carbon Nanotube

TiO 2@MWCNT heterostructure containing single one carbon nanotube has been successfully prepared via solvothermal method. X-ray diffration (XRD) analysis shows that TiO 2 nanocrystals only contain highly crystallized tetragonal anatase phase. Interestingly, scanning electron microscope (SEM) and transmission electron microscope (TEM) results show that most of the TiO 2 nanocrystals are perpendicular to the surface of multi-walled carbon nanotube (MWCNT) and only single one carbon nanotube is coated by TiO 2 crystals. The electromagnetic (EM) characteristics are investigated at 0.5–18.0 GHz range. The EM properties show that both the permittivity and the permeability present a typical resonance behavior at 11.0 GHz and 12.0 GHz, respectively. Besides, the TiO 2@MWCNT heterostructures exhibit a broadband absorption throughout the whole Ku wave bands (12.0–18.0 GHz). Interestingly, the reflection loss (RL) of the TiO 2@MWCNT heterostructures change slightly as the thickness of the heterostructures increase from 3.0 mm to 5.0 mm in the 8.0–13.0 GHz range.

Asymmetric Carbon Nanotube Dimers for Novel Sensing Applications

2021 ◽  
Vol 35 (11) ◽  
pp. 1320-1321
Author(s):  
Sumitra Dey ◽  
Ahmed Hassan
Keyword(s):  
Carbon Nanotube ◽  
Field Distribution ◽  
Electromagnetic Coupling ◽  
Nano Particles ◽  
Computational Experiments ◽  
Nano Particle ◽  
Relative Location ◽  
Sensing Applications ◽  
The Difference ◽  
Asymmetric Carbon

In this work, we study the use of asymmetric carbon nanotube (CNT) dimers for the contactless detection of foreign nano-particles. Asymmetric CNT dimers create a unique field distribution, through the electromagnetic coupling, which in turn generates two distinct resonances representing the bonding and anti-bonding modes. The presence of a foreign nano-particle (NP) in the vicinity of the CNT dimer perturbs the dimer’s field distribution and causes the bonding and anti-bonding resonances to shift by unequal amounts depending on the NP location. By studying the difference in the shift of the bonding and the anti-bonding resonances, we show that the NP relative location can be reconstructed. The computational experiments performed in this work show how asymmetric CNT dimers can be used for novel sensing applications.

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