Thermal and Electronic Properties of Macroscopic Multi-Walled Carbon Nanotubes Blocks

Castellino, Micaela; Tortello, Mauro; Bianco, Stefano; Musso, Simone; Giorcelli, Mauro; Pavese, Matteo; Gonnelli, Renato; Tagliaferro, Alberto

doi:10.1166/jnn.2010.1973

Cited by 13 publications

(4 citation statements)

References 30 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Since we have dealt with, in principle, highly non conductive matrices, we have decided not to use the inline "Four Point Probes (FPP) technique" (Smith, 1958), which is typically used for highly conductive materials, where the contact resistance between sample and connection wires could play an important role, leading to a wrong estimate of the real material resistance (Chiolerio et al, 2007). In order to perform I-V measurements a setup already tested was chosen and used for the estimate of CNTs bundles resistivity at room temperature (Castellino et al, 2010). In this case it was adjusted to fit our samples' dimensions.…”

Section: Electrical Characterizationmentioning

confidence: 99%

Electrical Properties of CNT-Based Polymeric Matrix Nanocomposites

Chiolerio¹,

Castellino²,

Jagdale³

et al. 2011

Carbon Nanotubes - Polymer Nanocomposites

View full text Add to dashboard Cite

Section: Electrical Characterizationmentioning

confidence: 99%

Electrical Properties of CNT-Based Polymeric Matrix Nanocomposites

Chiolerio¹,

Castellino²,

Jagdale³

et al. 2011

Carbon Nanotubes - Polymer Nanocomposites

View full text Add to dashboard Cite

“…Since the report on carbon nanotubes (CNTs) by Iijima 1 a lot of efforts were devoted to explore and exploit their structural, 2 electrical, 3 4 mechanical, 5 6 optical, 7 8 thermal, 9 magnetic, 10 11 chemical and biological 12 properties. The use of carbon nanotubes as fillers in polymer composite can enhance their properties for instance by increasing mechanical strength 13 14 and electrical conductivity.…”

Section: Introductionmentioning

confidence: 99%

Optical Absorption Cross Section of Individual Multi-Walled Carbon Nanotubes in the Visible Region

Shahzad¹,

Shahzad²,

Tagliaferro³

2016

j nanosci nanotechnol

View full text Add to dashboard Cite

The aim of the present work is to determine the optical absorption cross section for visible radiation of various types of multiwall carbon nanotubes (MWCNTs) having different dimensions through macroscopic optical measurements. This is achieved by dispersing MWCNTs in polydimethylsiloxane (PDMS) and preparing composite films. Different percentages (0.0% to 1.5%) of each MWCNTs type were mixed into the PDMS matrix using high speed mechanical stirring (~1000 rpm) and ultrasonication (~37 kHz) to reach optimal dispersion. By using doctor blading technique, 100 µm thick uniform films were produced on glass. They were then thermally cured and detached from the glass to get flexible and self-standing films. Field-Emission Scanning Electron Microscope (FESEM) analysis of cryo-fractured composite samples was used to check the dispersion of MWCNTs in PDMS, while Raman spectroscopy and FTIR were employed to rule out possible structural changes of the polymer in the composite that would have altered its optical properties. Total and specular reflection and transmission spectra were measured for all films. The absorption coefficient, which represents the fractional absorption per unit length and is proportional to the concentration of absorbing sites (i.e., MWCNTs at photon energies upon which PDMS is non-absorbing), was extracted. For each MWCNTs type, the absorption cross section of an individual MWCNT was obtained from the slope of absorption coefficient versus MWCNTs number density curve. It was found to be related with MWCNT volume. This method can be applied to all other nanoparticles as far as they can be dispersed in a host transparent matrix.

show abstract

“…[1][2][3][4][5] Many applications of CNTs including biosensor, drug delivery system and novel biomaterials have been reported. 6 Moreover, the formation of CNT/metal nanoparticle hybrid materials is being considered as vital building blocks for heterogeneous catalysis for nanoelectronics and molecular biosensing applications.…”

Section: Introductionmentioning

confidence: 99%

Fabrication of Gold Nanoparticle/Multi Walled Carbon Nanotube Hybrids by <I>In Situ</I> Reaction in Water Using Poly(acryloyl <I>β</I>-alanine)

Khaleque¹,

Tran²,

Hong³

et al. 2012

j. nanosci. nanotech.

View full text Add to dashboard Cite

Fabrication of a hybrid consists of gold nanoparticles and multi walled carbon nanotubes (MWCNTs) with the help of poly (amino acid) was investigated. Poly(acryloyl beta-alanine) was synthesized by precipitation polymerization in tetrahydrofuran. The polymers were used to form hybrids with MWCNTs in aqueous media. Subsequently, the polymer functionalized MWCNTs were fabricated by in situ formed gold nanoparticles. The fabrication by gold nanoparticles was confirmed by transmission electron microscopic analyses. The fabrication was attempted with different concentrations of lithium auric chloride solutions in the range of 0.1-1.2 mM in water. The lower concentration of the gold precursor solution resulted in the formation and attachment of gold nanoparticles without aggregation while the higher concentration above 1.0 mM led to the aggregation of gold nanoparticles. The gold nanoparticles were observed only on the surface of MWCNTs and none was in the bulk aqueous phase.

show abstract

Thermal and Electronic Properties of Macroscopic Multi-Walled Carbon Nanotubes Blocks

Cited by 13 publications

References 30 publications

Electrical Properties of CNT-Based Polymeric Matrix Nanocomposites

Electrical Properties of CNT-Based Polymeric Matrix Nanocomposites

Optical Absorption Cross Section of Individual Multi-Walled Carbon Nanotubes in the Visible Region

Fabrication of Gold Nanoparticle/Multi Walled Carbon Nanotube Hybrids by <I>In Situ</I> Reaction in Water Using Poly(acryloyl <I>β</I>-alanine)

Contact Info

Product

Resources

About