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Thermal interface materials (TIMs), including thermal conductive adhesives (TCAs), grease, phase change materials (PCMs) and thermal pads, are widely used in thermal management for electronics system. In this work, a bimodal thermal conductive adhesive (b-TCA) composed of epoxy matrix and silver fillers were developed. The silver fillers consist of silver flakes and silver particles. The specimens...
This paper provides a comprehensive review of the recent progress of research work performed to develop new thermal interface materials. The review starts by classifying existing thermal interface materials and analyzing their advantages and disadvantages. The state of the art research is then reviewed with an emphasis on those materials based on various carbon allotropes, such as graphite, carbon...
Thermal interface materials have been widely adopted in the thermal management for electronics system. Most of the thermal interface materials are made of polymers with thermally conductive particles distributed inside to enhance the thermal conductivity. Thus it is essential to figure out the effective thermal conductivity of this composite material. In the present paper, a parameterized cubic cell...
Heat dissipation of electronic packages has become one of the limiting factors to miniaturization. The removal of the heat generated is a critical issue in electronic packaging. With the development of thermal management, thermal interface material (TIM) plays a more and more important role in electronics packaging. A new nano-TIM with nanofibers prepared by using electrospinning has been suggested...
As power density in electronic system is approaching a level that conventional cooling methods canpsilat handle, reliability of microsystems is of large concern. In this paper, novel schemes for heat dissipation on electrical components have been reviewed with a strong focus on using carbon nanotubes (CNTs) as cooling fins as a basic approach. With an extraordinary high thermal conductivity, CNT is...
Continued miniaturization in combination with increased performance of microelectronics has generated an urgent need for improved thermal management techniques in order to maintain reliability of systems and devices. Development of advanced thermal interface materials has been identified as crucial, absorbing a portion of the advancements necessary within packaging technology. In this paper we introduce...
The two-dimensional computational fluid dynamics (CFD) simulations have been done for a series of material parameters of coolants in this paper. The influences of thermal conductivity, density, specific heat and viscosity on cooling have been obtained in the case studies. The pressure drop between the inlet and outlet of the cooling device is dependent on coolant's density and viscosity. Consequently,...
The 2D CFD simulations have been carried out for a series of CNT micro-fin cooling architectures based on two dimensional fin array models in this paper. The influence of micro-fin structures, fluid speeds, heating powers and effective thermal conductivity on cooling effects have been obtained in the case studies, and the 2D fin array simulation results have been compared with our previous 1D fin...
Thermal management in electronics packaging is becoming more rigorous with the increase of IC power. A common method is to transfer heat from the heat generating devices using a heat dissipation member, for example heat sink. Thermal interface material (TIM) is applied between the heat source component and the thermally conductive member to offer a fast heat dissipation path. Nano thermal interface...
Summary form only given. One important function of microsystem packaging is to remove the heat generated by the integrated circuits (ICs). The thermal management of microsystems has now become more crucial as the power density of ICs increases dramatically. To remove the big amount of heat is a big challenge for the packaging technology. An attractive solution is to utilize new developed nanotechnologies...
Today's technology is tuned towards faster, smaller and better efficiency. This trend has resulted in tremendous heat being generated in microelectronics components and if not properly managed, it can result in failure of microelectronics components. A critical issue is the removal of this heat generated. We report here a new type of nano thermal interface material (Nano-TIM) using the electrospinning...
The 2D CFD simulations have been carried out for a series of CNT micro-fin cooling architectures in this paper. The influence of micro-fin structures, fluid speeds and heating powers on cooling effects have been obtained in the case studies, and the numerical results have been compared with our experiment data. The CFD simulations indicate that the fluid speed is the key factor of heat transfer, and...
This paper reports the results of an investigation to create a thermal interface material (TIM) with adhesive functions. Previous tests with electro-spun nano fibrous polymer materials indicate high thermal conductivity of the films, and even higher thermal conductivity and lower resistivity had subsequently been obtained by adding thermally conductive nano particles. The thickness of the TIMs produced...
Air impingement cooling, as a potential air-cooling technique, has been shown to be much efficient and enabled to complement conventional forced convective air-cooling in electronics. To provide reliable references to the computational thermal analyses based on CFD for effective air-cooling technique integrated in microsystem electronics packaging, the numerical simulation based on CFD for air impingement...
The need for faster, smaller, and more reliable and efficient products has resulted in increase of heat generated in microelectronic components. The removal of the heat generated is an important issue in electronic packaging. The present research work aims at developing a new class of nano-thermal interface material (nanoTIM) that has low thermal resistance, high thermal conductivity and mechanical...
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