Simulation of thermal dissipation in a μ-processor using carbon nanotubes based composite

Thắng, Bùi Hùng; Hong, Phan Ngoc; Trinh, Pham Van; Chuc, Nguyen Van; Tam, Ngo Thi Thanh; Khôi, Phan Hồng; Minh, Phan Ngoc

doi:10.1016/j.commatsci.2010.01.027

Cited by 10 publications

(7 citation statements)

References 12 publications

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“…It can be observed that with 2wt% CNT, the temperature increase time and saturated temperature of the microprocessor was 200s and 63°C respectively (most efficient) [13]. In contrast, the Stars thermal paste without CNT had values of 75s and 66°C respectively [14]. The same pattern was observed for the AS5 thermal paste.…”

Section: Cnt In Microprocessors and Ledsmentioning

confidence: 54%

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A Meta-study on the Thermal Properties of Carbon Nanotubes in Thermal Interface Materials

Clarkson¹,

Khan²,

Singh³

2019

PAMR

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Computer Integrated Circuit (IC) microprocessors are becoming more powerful and densely packed while cooling mechanisms are seeing an equivalent improvement to compensate. A significant limit to cooling performance is thermal transfer between die and heatsink. In this meta study we evaluate carbon nanotube (CNT) thermal interface materials (TIMs) in order to determine how to maximise thermal transfer efficiency. We gathered information from over 15 articles focused on the thermodynamic parameters of CNT TIMs from databases such as Scopus, IEEE Xplore and ScienceDirect. Articles were filtered by key words including ‘carbon nanotubes’ and ‘thermal interface materials’ to identify scientific articles relevant to our research on TIMs. From our meta study we have found that enhancing CNTs will provide the best improvement in TIMs. The parameters analysed to determine TIM performance included thermal resistance, thermal conductivity and the effect of CNT concentration on computer operation time. Through our investigation we understood that increasing the concentration of CNT from 0 to 2 wt % increases the operation time from 75 seconds at 66°C to 200s at 63°C as well as increasing the thermal conductivity by 1.82 times for the AS5 thermal paste with 2 wt % CNT. Furthermore, CNT TIM pastes with less thickness have a lower thermal resistance of 0.4 K/W. However not all these parameters have been tested with computer chips. This means that in order to increase current heat transfer efficiency limit, we must integrate these parameters into experimental models. Keywords: Thermal Interface Material; Thermal Paste; Carbon Nanotubes; Thermal Transfer Efficiency; Integrated Circuit; Heat Sink; Heat Dissipation.

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Section: Cnt In Microprocessors and Ledsmentioning

confidence: 54%

“…The same pattern was observed for the AS5 thermal paste. [13,14] Table 1 shows the effect CNT have on thermal conductivity and thermal resistance. The results clearly confirm that an increase in CNT concentration increases the thermal conductivity and decreases the heat resistance of the thermal paste.…”

Section: Cnt In Microprocessors and Ledsmentioning

confidence: 99%

A Meta-study on the Thermal Properties of Carbon Nanotubes in Thermal Interface Materials

Clarkson¹,

Khan²,

Singh³

2019

PAMR

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“…The authors also would like to thank the VAST Program for Young Scientist for the financial support (Project no. VAST.ÐLT.05/ [13][14].…”

Section: Acknowledgmentsmentioning

confidence: 99%

“…CNTs have been used as additives in liquids to increase the thermal conductivity, one of the most important issues in industry [11]. Owing to their very high thermal conductivity (2000 W/m⋅K compared to thermal conductivity of Ag 419 W/m⋅K) [12,13], CNTs become one of the most suitable nanoadditives to fabricate the nanofluid for thermal dissipation in many industrial and consumer products [14,15]. In this paper, we present the results on application of multiwalled carbon nanotube nanofluid (MWCNTs nanofluid) for 450 W LED floodlight.…”

Section: Introductionmentioning

confidence: 99%

Application of Multiwalled Carbon Nanotube Nanofluid for 450 W LED Floodlight

Thắng

Quang

Hong

et al. 2014

Journal of Nanomaterials

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Overheating of the high-power light emitting diode (LED) has a dramatic effect on the chip’s lifetime. Heat dissipation for high-power LED is becoming a major challenge for researchers and technicians. Compared with the air cooling method, the liquid cooling method has many advantages and high efficiency because of higher specific heat capacity, density, and thermal conductivity. Carbon nanotubes with remarkable thermal properties have been used as additives in liquids to increase the thermal conductivity. In this work, multiwalled carbon nanotubes nanofluid (MWCNTs nanofluid) was used to enhance heat dissipation for 450 W LED floodlight. MWCNTs nanofluid was made by dispersing the OH functionalized MWCNTs in ethylene glycol/water solution. The concentration of MWCNTs in fluid was in the range between 0.1 and 1.3 gram/liter. The experimental results showed that the saturated temperature of 450 W LED chip was 55°C when using water/ethylene glycol solution in liquid cooling system. In the case of using MWCNTs nanofluid with 1.2 gram/liter of MWCNTs’ concentration, the saturated temperature of LED chip was 50.6°C. The results have confirmed the advantages of the MWCNTs for heat dissipation systems for high-power LED floodlight and other high power electronic devices.

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“…CNTs have been used as additives in liquids, fluids, oils, … to increase the thermal conductivity, one of the most important issues in industry [12]. Owing to their very high thermal conductivity (2000 W/m K compared with thermal conductivity of Ag 419 W/m K) [13, 14], CNTs become one of the most suitable nanoadditives for fabricating the lubricating oil in order to increase the thermal conductivity of lubricating oils, enhance the efficiency of heat dissipation for the engine and improve the performance efficiency of engine [15, 16].…”

Section: Introductionmentioning

confidence: 99%

CNTs based lubricating oils for UAZ 31512 engines

Hong

Thắng

Hong

et al. 2016

Micro & Nano Letters

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The obtained results on application of the carbon nanotubes (CNTs) in lubricating oils for UAZ 31512 engine are presented. The calculation results showed that the thermal conductivity of lubricating oils increase about 10% when using lubricating oil with 0.12 vol% of CNTs concentration. The experimental results on Ulyanovskiy Avtomobilnyi Zavod 31512 (UAZ 31512) engine on pedestal at free load showed that the temperature of engine dropped about 10°C and the fuel saving was up to 10% when using lubricating oil with 0.12 vol% of CNTs concentration.

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Simulation of thermal dissipation in a μ-processor using carbon nanotubes based composite

Cited by 10 publications

References 12 publications

A Meta-study on the Thermal Properties of Carbon Nanotubes in Thermal Interface Materials

A Meta-study on the Thermal Properties of Carbon Nanotubes in Thermal Interface Materials

Application of Multiwalled Carbon Nanotube Nanofluid for 450 W LED Floodlight

CNTs based lubricating oils for UAZ 31512 engines

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