Exploration Study of Multifunctional Metallic Nanocomposite Utilizing Single-Walled Carbon Nanotubes for Micro/Nano Devices

2005 ◽  
Vol 219 (2) ◽  
pp. 67-72 ◽  
Author(s):  
Quanfang Chen ◽  
Guang Chai ◽  
Bo Li
Keyword(s):  
Carbon Nanotubes ◽  
Energy Transport ◽  
Metallic Matrix ◽  
Building Blocks ◽  
Copper Matrix ◽  
Interfacial Bonding ◽  
Single Walled Carbon ◽  
The Matrix ◽  
Raman Scattering Spectra ◽  
Multifunctional Properties

Carbon nanotubes (CNTs) are excellent multifunctional materials in terms of mechanical robustness, thermal, and electrical conductivities. These multifunctional properties, as well as the small size of the structures, make CNTs ideal building blocks in developing nanocomposites. However, the matrix materials and the fabrication processes are critical in achieving the expected multifunctional properties of a CNT-reinforced nanocomposite. This paper has proved that electrochemical co-deposition of a metallic nanocomposite is a good approach for achieving good interfacial bonding between CNTs and a metallic matrix. Good interfacial bonding between a single-walled carbon nanotube (SWCNT) and a copper matrix has been verified by enhanced fracture toughness (increased stickiness) and a shift in the Raman scattering spectra. For the Cu/SWCNT nanocomposite, the radial breath mode (RBM) has disappeared and the tangential or G-band has shifted and widened, which is an indication of better energy transport.

Charge-Transfer Interaction in Single-Walled Carbon Nanotubes with Tetrathiafulvalene and Their Applications

2007 ◽  
Vol 7 (11) ◽  
pp. 4116-4119 ◽  
Author(s):  
Jin-Sun Kim ◽  
Kyuseok Choi ◽  
Ju-Jin Kim ◽  
Dong-Youn Noh ◽  
Sang-Kyu Park ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Charge Transfer ◽  
Photoelectron Spectroscopy ◽  
Specific Interaction ◽  
Building Blocks ◽  
Radial Breathing Mode ◽  
Industrial Applications ◽  
Binding Energies ◽  
Single Walled Carbon ◽  
Charge Transfer Interaction

We observed that single-walled carbon nanotube (SWNT) was aligned in the presence of TTF. This alignment was induced by a specific interaction between SWNT and tetrathiafulvalene (TTF), a well-known organic donor. The interaction between the two molecules can be explained by a charge-transfer, which was confirmed by X-ray photoelectron spectroscopy (XPS) and Raman spectroscopy. The binding energies of S (2P1/2) and S (2P3/2) were shifted from 163.0 eV and 164.1 eV to 163.9 eV and 165.1 eV, respectively. In Raman spectra of the SWNT-TTF, three peaks of SWNT in radial breathing mode were also upshifted by 4–5 cm−1. The charge-transfer interaction also contributed in modifying the electronic structure of SWNT and furthermore enhanced the electrical conductivity of SWNT. A more conductive thin film was fabricated using the SWNT-TTF. Four-probe measurement revealed that the surface resistance of the SWNT-TTF film was reduced to 4.359 Ω at room temperature while that of SWNT film was 6.894 Ω. These results enable carbon nanotubes to be utilized more for practically for industrial applications in fabricating peculiar nano-sized building blocks.

scholarly journals Preparation of Nickel-Copper Bilayers Coated on Single-Walled Carbon Nanotubes

2015 ◽  
Vol 2015 ◽  
pp. 1-8 ◽  
Author(s):  
Zhong Zheng ◽  
Shan Zhao ◽  
Shijie Dong ◽  
Lianjie Li ◽  
Anchun Xiao ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Electron Microscope ◽  
Single Walled Carbon Nanotubes ◽  
Copper Matrix ◽  
Copper Coating ◽  
Interfacial Bond Strength ◽  
Single Walled Carbon ◽  
Nickel Copper ◽  
Copper Matrix Composite ◽  
Walled Carbon Nanotubes

Due to oxidizability of copper coating on carbon nanotubes, the interfacial bond strength between copper coating and its matrix is weak, which leads to the reduction of the macroscopic properties of copper matrix composite. The electroless coating technics was applied to prepare nickel-copper bilayers coated on single-walled carbon nanotubes. The coated single-walled carbon nanotubes were characterized through transmission electron microscope spectroscopy, field-emission electron microscope spectroscopy, X-ray diffractometry, and thermogravimetric analysis. The results demonstrated that the nickel-copper bilayers coated on single-walled carbon nanotubes possessed higher purity of unoxidized copper fine-grains than copper monolayers.

Preparation and Properties of Carbon Nanotubes Reinforced Cu Matrix Composites for Electronic Packaging Application

2013 ◽  
Vol 275-277 ◽  
pp. 1789-1793 ◽  
Author(s):  
Long Shan Xu ◽  
Xiao Hua Chen ◽  
Xing Jun Liu
Keyword(s):  
Carbon Nanotubes ◽  
Electronic Packaging ◽  
Pure Copper ◽  
Copper Matrix ◽  
Matrix Composites ◽  
Composite Powders ◽  
Multi Walled Carbon Nanotube ◽  
The Matrix ◽  
Copper Composite ◽  
Copper Nanocomposites

Multi-walled carbon nanotube (MWCNT) reinforced copper nanocomposites were prepared using a unique spherical MWCNT-implanted copper composite powders. The MWCNTs are homogenously ‘locked’ in the composite and tightly bonded to the matrix, which makes them play excellent reinforcement role on the microhardness compared with the unreinforced pure copper. Although the thermal conductivity is not enhanced for the thermal resistance between the carbon nanotubes and the copper matrix; it is still high enough to be used as electronic packaging materials even the concentration of MWCNTS in the composite is up to 5 wt%. Furthermore, the thermal expansion of the composites decreased apparently with the addition of the carbon nanotubes.

Mechanical properties and interfacial phenomena in aluminum reinforced with carbon nanotubes manufactured by the sandwich technique

2016 ◽  
Vol 51 (11) ◽  
pp. 1619-1629 ◽  
Author(s):  
Cesar A Isaza M ◽  
JE Ledezma Sillas ◽  
JM Meza ◽  
JM Herrera Ramírez
Keyword(s):  
Electron Microscopy ◽  
Mechanical Properties ◽  
Carbon Nanotubes ◽  
Metallic Matrix ◽  
Sandwich Technique ◽  
Open Questions ◽  
The Matrix ◽  
Multi Walled Carbon Nanotubes ◽  
Matrix Reinforcement ◽  
Walled Carbon Nanotubes

Recently, a new manufacturing process for the production of metallic matrix composite materials reinforced with carbon nanotubes, known as sandwich technique has been proposed. This technique produces a material comprised of a metallic matrix and a banded structures-layers of multi-walled carbon nanotubes. However, among other issues, the matrix-reinforcement interface and the reinforcement dispersion degree are still open questions. The present study uses field emission scanning electron microscopy and high resolution transmission electron microscopy to probe that the method is capable to achieve a good dispersion of the multi-walled carbon nanotubes with no evidence of carbon nanotubes’ damage. The mechanical properties were measured by tensile and nanoindentation tests; improvements in the elastic modulus, yield and ultimate strengths were found, with respect to the unreinforced material.

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