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Open AccessJournal ArticleDOI

Thermal conductivity of carbon nanotube networks: a review

Bogumiła Kumanek, +1 more
- 01 May 2019 - 
- Vol. 54, Iss: 10, pp 7397-7427
TLDR
In this paper, a review article concentrates on analyzing the articles on thermal conductivity of CNT networks and summarizes the results obtained using those techniques, such as the 3-ω method, bolometric, steady-state method and their variations, hot-disk method, laser flash analysis, thermoreflectance method and Raman spectroscopy.
Abstract
Depending on their structure and order (individual, films, bundled, buckypapers, etc.), carbon nanotubes (CNTs) demonstrate different values of thermal conductivity, from the level of thermal insulation with the thermal conductivity of 0.1 W/mK to such high values as 6600 W/mK. This review article concentrates on analyzing the articles on thermal conductivity of CNT networks. It describes various measurement methods, such as the 3-ω method, bolometric, steady-state method and their variations, hot-disk method, laser flash analysis, thermoreflectance method and Raman spectroscopy, and summarizes the results obtained using those techniques. The article provides the main factors affecting the value of thermal conductivity, such as CNT density, number of defects in their structure, CNT ordering within arrays, direction of measurement in relation to their length, temperature of measurement and type of CNTs. The practical methods of using CNT networks and the potential directions of future research in that scope were also described.

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An updated review on the properties, fabrication and application of hybrid-nanofluids along with their environmental effects

TL;DR: Hybrid-nanofluids as mentioned in this paper is a new fluid produced by dispersing two dissimilar types of nano-particles into the base fluid, which can be used to improve heat transfer performance.
Journal ArticleDOI

State-of-the-art methods for overcoming temperature polarization in membrane distillation process: A review

TL;DR: In this paper, the authors summarize recent advances made in temperature polarization mitigation for membrane distillation systems and assess their influence on distillation efficiency, including a brief description of the TP phenomenon and its observed effects on MD and describe advanced MD processes from the aspects of low or negligible TP, high distillate flux, and improved energy efficiency.
Journal ArticleDOI

Carbon Nanotube Reinforced Strong Carbon Matrix Composites

TL;DR: This review serves as a rundown of recent advances in CNT/C composites and will be a valuable resource to aid future developments in this field.
Journal ArticleDOI

Simultaneous enhancement of electrical conductivity and seebeck coefficient in organic thermoelectric SWNT/PEDOT:PSS nanocomposites

TL;DR: In this paper, the authors demonstrate that incorporating CNT in a conducting polymer PEDOT:PSS could facilitate the formation of stable and effective conductive channels, which provides an effective approach to optimize the TE parameters with simultaneously enhanced electrical conductivity and Seebeck coefficient against the initial organic TE materials.
References
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Journal ArticleDOI

Helical microtubules of graphitic carbon

Sumio Iijima
- 01 Nov 1991 - 
TL;DR: Iijima et al. as mentioned in this paper reported the preparation of a new type of finite carbon structure consisting of needle-like tubes, which were produced using an arc-discharge evaporation method similar to that used for fullerene synthesis.
Journal ArticleDOI

Efficient planar heterojunction perovskite solar cells by vapour deposition

TL;DR: It is shown that perovskite absorbers can function at the highest efficiencies in simplified device architectures, without the need for complex nanostructures.
Journal ArticleDOI

Thermal properties of graphene and nanostructured carbon materials

TL;DR: The thermal properties of carbon materials are reviewed, focusing on recent results for graphene, carbon nanotubes and nanostructured carbon materials with different degrees of disorder, with special attention given to the unusual size dependence of heat conduction in two-dimensional crystals.
Journal ArticleDOI

Thermal Properties of Graphene, Carbon Nanotubes and Nanostructured Carbon Materials

TL;DR: In this paper, the authors review thermal and thermoelectric properties of carbon materials focusing on recent results for graphene, carbon nanotubes and nanostructured carbon materials with different degrees of disorder.
Journal ArticleDOI

Flash Method of Determining Thermal Diffusivity, Heat Capacity, and Thermal Conductivity

TL;DR: In this paper, a high-intensity short-duration light pulse is absorbed in the front surface of a thermally insulated specimen, and the resulting temperature history of the rear surface is measured by a thermocouple and recorded with an oscilloscope and camera.
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