The effective thermal conductivity of diamond and aluminum nitride layered composites was analyzed for three different types of interfaces. A sharp interface with a stepwise discontinuity, a graded interface with a linear variation and a diffused interface with a minimum or a maximum in thermal conductivity across the interface were considered. The results of the modeling analysis were used to explain the experimental results described in the literature of improved heat spreader characteristics of diamond and aluminum nitride composites.
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K. Jagannadham (1999) studied this question.
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