scholarly journals CARBON NANOTUBES COMPOSITE MATERIALS FOR DIPOLE ANTENNAS AT TERAHERTZ RANGE

2018 ◽  
Vol 66 ◽  
pp. 11-18 ◽  
Author(s):  
Yaseen Naser Jurn ◽  
Mohamed Fareq Abdul Malek ◽  
Hasliza A. Rahim
Keyword(s):  
Carbon Nanotubes ◽  
Composite Materials ◽  
Terahertz Range ◽  
Dipole Antennas

The conductivity in Composite Materials Based on Oriented Carbon Nanotubes

2021 ◽  
Vol 76 (1) ◽  
pp. 29-35
Author(s):  
E. A. Vorobyeva ◽  
A. P. Evseev ◽  
V. L. Petrov ◽  
A. A. Shemukhin ◽  
N. G. Chechenin
Keyword(s):  
Carbon Nanotubes ◽  
Composite Materials

The influence of functionalization time of carbon nanotube on the mechanical properties of the epoxy composites

2017 ◽  
Vol 51 (12) ◽  
pp. 1693-1701 ◽  
Author(s):  
EA Zakharychev ◽  
EN Razov ◽  
Yu D Semchikov ◽  
NS Zakharycheva ◽  
MA Kabina
Keyword(s):  
Mechanical Properties ◽  
Carbon Nanotubes ◽  
Tensile Strength ◽  
Elastic Modulus ◽  
Carbon Nanotube ◽  
Composite Materials ◽  
Polymer Composites ◽  
Epoxy Composites ◽  
Multi Walled Carbon Nanotubes ◽  
Walled Carbon Nanotubes

This paper investigates the structure, length, and percentage of functional groups of multi-walled carbon nanotubes (CNT) depending on the time taken for functionalization in HNO3 and H2SO4 mixture. The carbon nanotube content and influence of functionalization time on mechanical properties of polymer composite materials based on epoxy matrix are studied. The extreme dependencies of mechanical properties of carbon nanotube functionalization time of polymer composites were established. The rise in tensile strength of obtained composites reaches 102% and elastic modulus reaches 227% as compared to that of unfilled polymer. The composites exhibited best mechanical properties by including carbon nanotube with 0.5 h functionalization time.

Mechanisms of Electrical Conductivity in Carbon Nanotubes and Graphene

2018 ◽  
pp. 2673-2684 ◽  
Author(s):  
Rafael Vargas-Bernal
Keyword(s):  
Carbon Nanotubes ◽  
Electrical Conductivity ◽  
Composite Materials ◽  
Hybrid Materials ◽  
Carbon Nanomaterials ◽  
Electronics Industry ◽  
Future Generations ◽  
Science And Engineering ◽  
The World ◽  
Technological Impact

There is enormous interest in carbon nanomaterials, due to their exceptional physical properties, from the perspective of science and engineering of materials applied to the electronics industry. Until now, significant progress has been made towards understanding the mechanisms of electrical conductivity of carbon nanotubes and graphene. However, scientists around the world even today continue studying these mechanisms, for exploiting them fully in different electronic applications with a high technological impact. This article discusses the mechanisms of electrical conductivity of both nanomaterials, analyzes the present implications, and projects its importance for future generations of electronic devices. In particular, it is important to note that different mechanisms may be identified when these nanomaterials are used individually, when they are incorporated as fillers in composite materials or hybrid materials, or even when they are doped or functionalized. Finally, other electrical variables with important role in electrical conductivity of these materials are also explored.

Mechanisms of Electrical Conductivity in Carbon Nanotubes and Graphene

2019 ◽  
pp. 101-115
Author(s):  
Rafael Vargas-Bernal
Keyword(s):  
Carbon Nanotubes ◽  
Electrical Conductivity ◽  
Composite Materials ◽  
Hybrid Materials ◽  
Carbon Nanomaterials ◽  
Electronics Industry ◽  
Future Generations ◽  
Science And Engineering ◽  
The World ◽  
Technological Impact

There is enormous interest in carbon nanomaterials due to their exceptional physical properties, from the perspective of science and engineering of materials applied to the electronics industry. Significant progress has been made towards understanding the mechanisms of electrical conductivity of carbon nanotubes and graphene. However, scientists around the world continue studying these mechanisms to exploit them fully in different electronic applications with a high technological impact. This chapter discusses the mechanisms of electrical conductivity of both nanomaterials, analyzes the present implications, and projects its importance for future generations of electronic devices. In particular, it is important to note that different mechanisms may be identified when these nanomaterials are used individually, when they are incorporated as fillers in composite materials or hybrid materials, or even when they are doped or functionalized. Finally, other electrical variables with important role in electrical conductivity of these materials are also explored.

Use of Natural Biopolymers to Create Nanocomposite Materials

2020 ◽  
Vol 299 ◽  
pp. 299-304
Author(s):  
A.O. Makarova ◽  
L.R. Bogdanova ◽  
O.S. Zueva
Keyword(s):  
Carbon Nanotubes ◽  
Composite Materials ◽  
Sodium Alginate ◽  
Freeze Drying ◽  
Nanocomposite Materials ◽  
High Porosity ◽  
Composite Hydrogels ◽  
Xerogel Films

Method of carbon nanotubes disaggregation with the help of protein material, gelatin, has been proposed which facilitate to disperse evenly nanotubes in hydrogels based on gelatin and polysaccharides (sodium alginate or κ-carrageenan). In the obtained composite hydrogels carbon nanotubes are located in the biopolymer matrix, i.e. being in biocompatible form without losing their unique properties. The removal of water from the pores of the hydrogel by means of freeze drying allowed to obtain materials having high porosity and with included carbon nanotubes. The produced hydrogels can be used to create eco-friendly composite materials for biomedical and technical purposes. Depending on the tasks the developed systems can also be used in the forms of xerogel (films), cryogel, aerogel, and even in the form of powder, containing carbon nanotubes.

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