Applying Aluminum–Vertically-Aligned Carbon Nanotube Forests Composites for Heat Dissipation

Li, Yan-Rui; Su, Chih-Chung; Chang, Shuo‐Hung

doi:10.3390/nano9050758

Cited by 9 publications

(14 citation statements)

References 31 publications

(32 reference statements)

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“…However, some studies concluded that the thermal conductivity depends on CNT directionality . Recently, several researchers have increasingly focused on vertically aligned CNT (VACNT) due to their high efficiency for heat transfer into ambient conditions . As shown in Figure , VACNT is successfully grown using plasma‐enhanced CVD (PE‐CVD) method, which commonly produces good‐quality CNT.…”

Section: Carbon Allotrope Materials In Tims Applicationmentioning

confidence: 99%

“…This method is practical for semiconductors that use silicon (Si) as substrate due to the lower operating temperature than other CVDs, which enable more than 600°C of operating temperature during growth process. Axial and horizontal thermal conductivity values can differ greatly . The irregularity of CNT orientation on the surfaces will reduce the contact efficiency and heat transfer capacity.…”

Section: Carbon Allotrope Materials In Tims Applicationmentioning

confidence: 99%

“…SEM image of VACNT using PE‐CVD SEM, scanning electron microscopy; PE‐CVD, plasma‐enhanced chemical vapor deposition; VACNT, vertically aligned carbon nanotube [Color figure can be viewed at wileyonlinelibrary.com]…”

Section: Carbon Allotrope Materials In Tims Applicationmentioning

confidence: 99%

“…The length of VACNT does not affect regular conductivity because of the anisotropy of thermal property. Therefore, VACNT of minimum length is sufficient for optimum heat dissipation and minimizing the costs of synthesis . The maximum potential of VACNT can be achieved when it can transfer heat in various directions, including the z ‐direction, due to orientation.…”

Section: Carbon Allotrope Materials In Tims Applicationmentioning

confidence: 99%

“…However, some studies concluded that the thermal conductivity depends on CNT directionality. 83,84 Recently, several researchers have increasingly focused on vertically aligned CNT (VACNT) F I G U R E 4 SEM and TEM images of two-dimensional (2D) material. A, Quantum dots; B, nanoparticles arrays; C, core-shell nanoparticles; D, hollow cubes; and E, nanospheres.…”

Section: Carbon Nanotubesmentioning

confidence: 99%

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Allotrope carbon materials in thermal interface materials and fuel cell applications: A review

2019

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Summary The performance of allotrope carbon materials has been explored because of their superior properties in energy system applications. This review provides an understanding of the current work focusing on the applications of selected carbon materials in important energy systems, focus on thermal interface materials (TIMs), and fuel cell applications. This article begins with the introduction of TIMs and fuel cell in general working principle and presents details on carbon materials. The discussion focuses on updates from the latest research work and addresses current challenges and opportunities for research toward TIMs and fuel cell applications. The optimum performance of TIMs was seen when thermal conductivity achieved at a maximum of 3000 W (m K)−1 by using vertically aligned carbon nanotubes (CNTs) and a minimum internal thermal resistance of 0.3 mm2 K W−1. Meanwhile for fuel cell, the platinum/CNTs catalyst applied proton exchange membrane fuel cell achieved high power density of 661 mW cm−2 in the presence of Nafion electrolyte membrane. This review provides insights for scientists about the use of carbon materials, especially in energy system applications.

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Section: Carbon Allotrope Materials In Tims Applicationmentioning

confidence: 99%

Section: Carbon Allotrope Materials In Tims Applicationmentioning

confidence: 99%

Section: Carbon Allotrope Materials In Tims Applicationmentioning

confidence: 99%

Section: Carbon Allotrope Materials In Tims Applicationmentioning

confidence: 99%

Section: Carbon Nanotubesmentioning

confidence: 99%

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Allotrope carbon materials in thermal interface materials and fuel cell applications: A review

2019

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Enhancement of thermal interface material properties using carbon nanotubes through simple electrophoretic deposition method

Bahru

Mohamed

2020

Int J Energy Res

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The industrial revolution development of electronic technologies has turned the electronic system into a complicated integration of high-power density and smart design. The complex integrated design has contributed to the excessive heat generation in electronic devices. Consequently, heat management devices have become crucial in prolonging the lives of devices and components and maintaining their optimal performance. Therefore, the passive heat management treatment through thermal interface materials (TIMs) in the devices is among the best options to remove heat from electronic devices. Carbon nanotubes (CNTs) with high-thermal conductivity was employed in this study for TIM development by using the simple electrophoretic deposition (EPD) method. The CNTs were synthesized and purified before TIM development. Several analyses, including transmission electron microscopy, thermogravimetric analysis, Raman spectroscopy, and Fourier-transform infrared, were conducted. Analysis results showed that only 0.03 wt% was retained and carbon content increased up to 97.84% after purification. The purified CNTs were dissolved in a suspension medium with a ratio of 0.5 mg/mL to achieve suspension stability, and a Zetasizer was used for verification. The following three operating parameters of EPD were investigated: (a) range of applied voltage (100-200 V), (b) deposition time (1-20 min), and (c) gap between electrodes (10-20 mm). On the basis of the characterization results, the optimum process condition of EPD was achieved at 175 V, 10 minutes, and 10 mm with 1.6 mg of CNT deposition and 14.14 μm of CNT thickness. The maximum thickness of deposited CNTs was 56.95 μm, producing 27.08 W/mÁK and 2.09 mm 2 /s of thermal conductivity and diffusivity, respectively. These results indicate the high potential of CNTs in facilitating efficient heat removal in TIM fabrication. K E Y W O R D Scarbon nanotubes, electrophoretic deposition, heat spreader, thermal interface materials

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A review of thermal interface material fabrication method toward enhancing heat dissipation

et al. 2020

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Summary Thermal interface materials (TIMs) are applied in electronic devices that are involved in heat generation and raising the temperature. The optimization of TIMs is important in heat dissipation to maintain the good performance of devices, low power during operation, and reduced internal damages among small components. The TIMs are inserted between two contact surfaces to enhance thermal conductivity that will reduce the increment of surface temperature in a longer time and facilitates the cooling process with a consistent power supplied to the system with minimum increment. Research on nanomaterials and hybrid materials aims to obtain maximum thermal conductivity and reduce resistance in the devices. However, the suitable fabrication method for achieving good production and performance is still debatable. Therefore, significant fabrication methods have been explored for various materials. This review provides insights into the current work focusing on the materials used in the development of TIMs by various methods. The discussion begins with the introduction of thermal management and the working principles applied in the system. Then, the methods applied for material fabrication into TIMs, including the advantages and disadvantages of the methods, are discussed. Last, the current challenges and opportunities in methods used are discussed to offer new inputs and improvement in method modification for TIMs design. The targeted thermal performance for the industrial market of TIMs for nanomaterial applications is approximately 100 W/mK and 1 × 10−6 m2/WK with lowest power of 100 W.

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Applying Aluminum–Vertically-Aligned Carbon Nanotube Forests Composites for Heat Dissipation

Cited by 9 publications

References 31 publications

Allotrope carbon materials in thermal interface materials and fuel cell applications: A review

Allotrope carbon materials in thermal interface materials and fuel cell applications: A review

Enhancement of thermal interface material properties using carbon nanotubes through simple electrophoretic deposition method

A review of thermal interface material fabrication method toward enhancing heat dissipation

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