The study on the thermal transport properties of matter under high pressure is important but is hard to fulfill in a diamond anvil cell (DAC) because the accurate measurement of the temperature gradient within the sample of DAC is very difficult. In most cases, the sample temperature can be read accurately from the thermocouples that are directly attached to the lateral edges of diamond anvils because both the sample and diamond anvils can be uniformly heated up to a given temperature. But for the thermal transport property studies in DAC, an artificial temperature distribution along the compression axis is a prerequisite. Obviously, the temperature of the top or bottom surface of the sample cannot be substituted by that of diamond anvils although diamond anvils can be considered as a good medium for heat conduction. With temperature field simulation by finite element analysis, it is found that big measurement errors can occur and are fatal to the correct analysis of thermal transport properties of materi...

中文翻译：

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通过金刚石砧座中的温度场分析准确测量温度，用于研究高压下的物质热传输

研究高压下物质的热传输特性很重要，但很难在金刚石砧座 (DAC) 中完成，因为精确测量 DAC 样品内的温度梯度非常困难。在大多数情况下，可以从直接连接到金刚石砧座侧边缘的热电偶准确读取样品温度，因为样品和金刚石砧座都可以均匀加热到给定的温度。但是对于 DAC 中的热传输特性研究，沿压缩轴的人工温度分布是先决条件。显然，尽管金刚石砧可以被认为是一种良好的导热介质，但样品顶面或底面的温度不能被金刚石砧代替。