22-30 July 2021
North-West University
Africa/Johannesburg timezone
More Information Coming Soon

Heat Transfer Improvement of a Thermal Interface Material for Heat Sink Applications Using Carbon Nanomaterials

27 Jul 2021, 11:30
Potchefstroom Campus (North-West University)

Potchefstroom Campus

North-West University

Oral Presentation Track F - Applied Physics Applied Physics


Othmane Mouane Edward Nkadimeng (University of the Witwatersrand)


A functional material of carbon nano-composite is investigated to be utilised as a Thermal Interface Material (TIM) in the Low Voltage Power Supply (LVPS) bricks as part of the upgrade of the large Hardron Collider (LHC) accelerator at CERN. The TIM is a composite in a pasty form, based on carbon nanomaterials (CNMs) and Silicone heat transfer compound. The goal behind the implementation of the carbon nano-material in the TIM was to increase the thermal transfer from the electronics to the heat sink by the intermediary of the aluminium oxide (Al2O3) posts. The temperature of the thermal posts was aquisite by the means of an automated test stand built in house and monitored hourly with a Labview interface. The composite of CNMs and silicone compound were dissolved in acetone, then annealed at high temperatures in atmospheric air in order to achieve a homogeneous mixture. The CNMs investigated in this research work are Carbon Nanotubes (CNTs) and Carbon Nanospheres (CNSs) which were synthesised by Chemical Vapor Deposition. Also, the study included the investigation of the weighting of the CNMs in the nano-composite.

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Primary author

Othmane Mouane


Edward Nkadimeng (University of the Witwatersrand) Roger van Rensburg (Wits) ELIAS SIDERAS-HADDAD (University of the Witwatersrand) Bruce Mellado (University of the Witwatersrand)

Presentation Materials

Peer reviewing